From 3caec296f462ef5a7225be335606a60d0c5578f2 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 6 May 2021 15:20:05 +0500
Subject: [PATCH 01/44] add Arduino Nano 33 ioT example code

---
 .../iothub_ll_telemetry_sample/iot_configs.h  |  26 ++
 .../iothub_ll_telemetry_sample.ino            | 313 ++++++++++++++++++
 .../platform.local.txt                        | 103 ++++++
 .../iothub_ll_telemetry_sample/sample_init.h  |  21 ++
 4 files changed, 463 insertions(+)
 create mode 100644 examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
 create mode 100644 examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino
 create mode 100644 examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
 create mode 100644 examples/ArduinoNano33iot/iothub_ll_telemetry_sample/sample_init.h

diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
new file mode 100644
index 0000000..36c6496
--- /dev/null
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#ifndef IOT_CONFIGS_H
+#define IOT_CONFIGS_H
+
+/**
+ * WiFi setup
+ */
+#define IOT_CONFIG_WIFI_SSID            ""
+#define IOT_CONFIG_WIFI_PASSWORD        ""
+
+/**
+ * IoT Hub Device Connection String setup
+ * Find your Device Connection String by going to your Azure portal, creating (or navigating to) an IoT Hub, 
+ * navigating to IoT Devices tab on the left, and creating (or selecting an existing) IoT Device. 
+ * Then click on the named Device ID, and you will have able to copy the Primary or Secondary Device Connection String to this sample.
+ */
+#define DEVICE_CONNECTION_STRING    ""
+
+// The protocol you wish to use should be uncommented
+//
+#define SAMPLE_MQTT
+//#define SAMPLE_HTTP
+
+#endif /* IOT_CONFIGS_H */
diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino
new file mode 100644
index 0000000..949cc69
--- /dev/null
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino
@@ -0,0 +1,313 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// CAVEAT: This sample is to demonstrate azure IoT client concepts only and is not a guide design principles or style
+// Checking of return codes and error values shall be omitted for brevity.  Please practice sound engineering practices
+// when writing production code.
+
+// Note: PLEASE see https://github.com/Azure/azure-iot-arduino#simple-sample-instructions for detailed sample setup instructions.
+// Note2: To use this sample with the esp32, you MUST build the AzureIoTSocket_WiFi library by using the make_sdk.py,
+//        found in https://github.com/Azure/azure-iot-pal-arduino/tree/master/build_all. 
+//        Command line example: python3 make_sdk.py -o <your-lib-folder>
+#include <Arduino.h>
+#include <AzureIoTHub.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "iot_configs.h" // You must set your wifi SSID, wifi PWD, and your IoTHub Device Connection String in iot_configs.h
+#include "sample_init.h"
+
+#ifdef is_esp_board
+  #include "Esp.h"
+#endif
+
+#ifdef is_arduino_board
+    #include "Arduino.h"
+#endif
+
+#ifdef SAMPLE_MQTT
+    #include "AzureIoTProtocol_MQTT.h"
+    #include "iothubtransportmqtt.h"
+#endif // SAMPLE_MQTT
+#ifdef SAMPLE_HTTP
+    #include "AzureIoTProtocol_HTTP.h"
+    #include "iothubtransporthttp.h"
+#endif // SAMPLE_HTTP
+
+static const char ssid[] = IOT_CONFIG_WIFI_SSID;
+static const char pass[] = IOT_CONFIG_WIFI_PASSWORD;
+
+/* Define several constants/global variables */
+const int RESET_PIN = 40;
+static const char* connectionString = DEVICE_CONNECTION_STRING;
+static bool g_continueRunning = true; // defines whether or not the device maintains its IoT Hub connection after sending (think receiving messages from the cloud)
+static size_t g_message_count_send_confirmations = 0;
+static bool g_run_demo = true;
+
+IOTHUB_MESSAGE_HANDLE message_handle;
+size_t messages_sent = 0;
+#define MESSAGE_COUNT 5 // determines the number of times the device tries to send a message to the IoT Hub in the cloud.
+const char* telemetry_msg = "test_message";
+const char* quit_msg = "quit";
+const char* exit_msg = "exit";
+
+IOTHUB_DEVICE_CLIENT_LL_HANDLE device_ll_handle;
+
+static int callbackCounter;
+int receiveContext = 0;
+
+/* -- receive_message_callback --
+ * Callback method which executes upon receipt of a message originating from the IoT Hub in the cloud. 
+ * Note: Modifying the contents of this method allows one to command the device from the cloud. 
+ */
+static IOTHUBMESSAGE_DISPOSITION_RESULT receive_message_callback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
+{
+    int* counter = (int*)userContextCallback;
+    const unsigned char* buffer;
+    size_t size;
+    const char* messageId;
+
+    // Message properties
+    if ((messageId = IoTHubMessage_GetMessageId(message)) == NULL)
+    {
+        messageId = "<null>";
+    }
+
+    // Message content
+    if (IoTHubMessage_GetByteArray(message, (const unsigned char**)&buffer, &size) != IOTHUB_MESSAGE_OK)
+    {
+        LogInfo("unable to retrieve the message data\r\n");
+    }
+    else
+    {
+        LogInfo("Received Message [%d]\r\n Message ID: %s\r\n Data: <<<%.*s>>> & Size=%d\r\n", *counter, messageId, (int)size, buffer, (int)size);
+        // If we receive the word 'quit' then we stop running
+        if (size == (strlen(quit_msg) * sizeof(char)) && memcmp(buffer, quit_msg, size) == 0)
+        {
+            g_continueRunning = false;
+        }
+    }
+
+    /* Some device specific action code goes here... */
+    (*counter)++;
+    return IOTHUBMESSAGE_ACCEPTED;
+}
+
+
+/* -- send_confirm_callback --
+ * Callback method which executes upon confirmation that a message originating from this device has been received by the IoT Hub in the cloud.
+ */
+static void send_confirm_callback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
+{
+    (void)userContextCallback;
+    // When a message is sent this callback will get envoked
+    g_message_count_send_confirmations++;
+    Serial.println("confirmation callback recieved");
+    LogInfo("Confirmation callback received for message %lu with result %s\r\n", (unsigned long)g_message_count_send_confirmations, MU_ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
+    Serial.println((unsigned long)g_message_count_send_confirmations);
+    Serial.println(MU_ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
+}
+
+/* -- connection_status_callback --
+ * Callback method which executes on receipt of a connection status message from the IoT Hub in the cloud.
+ */
+static void connection_status_callback(IOTHUB_CLIENT_CONNECTION_STATUS result, IOTHUB_CLIENT_CONNECTION_STATUS_REASON reason, void* user_context)
+{
+    (void)reason;
+    (void)user_context;
+    // This sample DOES NOT take into consideration network outages.
+    if (result == IOTHUB_CLIENT_CONNECTION_AUTHENTICATED)
+    {
+        Serial.println("Device is connected to iothub");
+        LogInfo("The device client is connected to iothub\r\n");
+    }
+    else
+    {
+        Serial.println("Device is unable to connected to iothub");
+        LogInfo("The device client has been disconnected\r\n");
+    }
+}
+
+/* -- reset_esp_helper -- 
+ * waits for call of exit_msg over Serial line to reset device
+ */
+static void reset_esp_helper()
+{
+#ifdef is_esp_board
+    // Read from local serial 
+    if (Serial.available()){
+        String s1 = Serial.readStringUntil('\n');// s1 is String type variable.
+        Serial.print("Received Data: ");
+        Serial.println(s1);//display same received Data back in serial monitor.
+
+        // Restart device upon receipt of 'exit' call.
+        int e_start = s1.indexOf('e');
+        String ebit = (String) s1.substring(e_start, e_start+4);
+        if(ebit == exit_msg)
+        {
+            ESP.restart();
+        }
+    }
+#endif // is_esp_board
+}
+// void(* resetFunc) (void) = 0;
+// static void reset_arduino_helper()
+// {
+// #ifdef is_arduino_board
+//     delay(5000);
+//     digitalWrite(RESET_PIN, LOW);
+//     // Read from local serial 
+//     if (Serial.available()){
+//         String s1 = Serial.readStringUntil('\n');// s1 is String type variable.
+//         Serial.print("Received Data: ");
+//         Serial.println(s1);//display same received Data back in serial monitor.
+
+//         // Restart device upon receipt of 'exit' call.
+//         int e_start = s1.indexOf('e');
+//         String ebit = (String) s1.substring(e_start, e_start+4);
+//         if(ebit == exit_msg)
+//         {
+//             resetFunc();
+//         }
+//     }
+// #endif // is_arduino_board
+// }
+/* -- run_demo --
+ * Runs active task of sending telemetry to IoTHub
+ * WARNING: only call this function once, as it includes steps to destroy handles and clean up at the end.
+ */
+static void run_demo()
+{
+    int result = 0;
+
+    // action phase of the program, sending messages to the IoT Hub in the cloud.
+    do
+    {
+        if (messages_sent < MESSAGE_COUNT)
+        {
+            // Construct the iothub message from a string or a byte array
+            message_handle = IoTHubMessage_CreateFromString(telemetry_msg);
+            //message_handle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText)));
+
+            // Set Message property
+            /*(void)IoTHubMessage_SetMessageId(message_handle, "MSG_ID");
+            (void)IoTHubMessage_SetCorrelationId(message_handle, "CORE_ID");
+            (void)IoTHubMessage_SetContentTypeSystemProperty(message_handle, "application%2fjson");
+            (void)IoTHubMessage_SetContentEncodingSystemProperty(message_handle, "utf-8");*/
+
+            // Add custom properties to message
+            // (void)IoTHubMessage_SetProperty(message_handle, "property_key", "property_value");
+
+            LogInfo("Sending message %d to IoTHub\r\n", (int)(messages_sent + 1));
+            Serial.println("Sending message to iothub");
+            result = IoTHubDeviceClient_LL_SendEventAsync(device_ll_handle, message_handle, send_confirm_callback, NULL);
+            // The message is copied to the sdk so the we can destroy it
+            IoTHubMessage_Destroy(message_handle);
+
+            messages_sent++;
+        }
+        else if (g_message_count_send_confirmations >= MESSAGE_COUNT)
+        {
+            // After all messages are all received stop running
+            Serial.println("else called in do");
+            g_continueRunning = false;
+        }
+
+        IoTHubDeviceClient_LL_DoWork(device_ll_handle);
+        ThreadAPI_Sleep(3);
+        // reset_esp_helper();
+        // reset_arduino_helper();
+      
+    } while (g_continueRunning);
+
+    // Clean up the iothub sdk handle
+    IoTHubDeviceClient_LL_Destroy(device_ll_handle);
+    // Free all the sdk subsystem
+    IoTHub_Deinit();
+
+    LogInfo("done with sending");
+    return;
+}
+void setup() {
+    
+    
+    // digitalWrite(RESET_PIN, HIGH);
+    // pinMode(RESET_PIN, OUTPUT);     
+  
+    // Select the Protocol to use with the connection
+#ifdef SAMPLE_MQTT
+    IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol = MQTT_Protocol;
+#endif // SAMPLE_MQTT
+#ifdef SAMPLE_HTTP
+   IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol = HTTP_Protocol;
+#endif // SAMPLE_HTTP
+    Serial.println("before sample innit");
+
+    sample_init(ssid, pass);
+    Serial.println("after sample inti");
+
+    // Used to initialize IoTHub SDK subsystem
+    (void)IoTHub_Init();
+    // Create the iothub handle here
+    device_ll_handle = IoTHubDeviceClient_LL_CreateFromConnectionString(connectionString, protocol);
+    LogInfo("Creating IoTHub Device handle\r\n");
+
+    if (device_ll_handle == NULL)
+    {
+        LogInfo("Error AZ002: Failure creating Iothub device. Hint: Check you connection string.\r\n");
+        Serial.println("error creating device handle");
+    }
+    else
+    {
+        // Set any option that are neccessary.
+        // For available options please see the iothub_sdk_options.md documentation in the main C SDK
+        // turn off diagnostic sampling
+        int diag_off = 0;
+        Serial.println("device handle created sucessfully");
+        IoTHubDeviceClient_LL_SetOption(device_ll_handle, OPTION_DIAGNOSTIC_SAMPLING_PERCENTAGE, &diag_off);
+
+#ifndef SAMPLE_HTTP
+        // Example sdk status tracing for troubleshooting
+        bool traceOn = true;
+        IoTHubDeviceClient_LL_SetOption(device_ll_handle, OPTION_LOG_TRACE, &traceOn);
+#endif // SAMPLE_HTTP
+
+        // Setting the Trusted Certificate.
+        IoTHubDeviceClient_LL_SetOption(device_ll_handle, OPTION_TRUSTED_CERT, certificates);
+
+#if defined SAMPLE_MQTT
+        //Setting the auto URL Encoder (recommended for MQTT). Please use this option unless
+        //you are URL Encoding inputs yourself.
+        //ONLY valid for use with MQTT
+        bool urlEncodeOn = true;
+        IoTHubDeviceClient_LL_SetOption(device_ll_handle, OPTION_AUTO_URL_ENCODE_DECODE, &urlEncodeOn);
+        /* Setting Message call back, so we can receive Commands. */
+        if (IoTHubClient_LL_SetMessageCallback(device_ll_handle, receive_message_callback, &receiveContext) != IOTHUB_CLIENT_OK)
+        {
+            LogInfo("ERROR: IoTHubClient_LL_SetMessageCallback..........FAILED!\r\n");
+            Serial.println("Error IoTHubClient_LL_SetMessageCallback  ");
+        }
+        else
+        {
+            Serial.println("PASS IoTHubClient_LL_SetMessageCallback  ");
+        }
+#endif // SAMPLE_MQTT
+
+        // Setting connection status callback to get indication of connection to iothub
+        (void)IoTHubDeviceClient_LL_SetConnectionStatusCallback(device_ll_handle, connection_status_callback, NULL);
+
+    }
+}
+
+void loop(void)
+{
+  
+  if (g_run_demo)
+  {
+      Serial.println("running demo");
+      run_demo();
+      g_run_demo = false;
+  }
+//   reset_esp_helper();
+//   reset_arduino_helper();
+}
diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
new file mode 100644
index 0000000..87bccfa
--- /dev/null
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
@@ -0,0 +1,103 @@
+name=Nano33IoT Arduino
+version=1.0.0
+
+
+
+tools.esptool_py.path={runtime.tools.esptool_py.path}
+tools.esptool_py.cmd=esptool
+tools.esptool_py.cmd.linux=esptool.py
+tools.esptool_py.cmd.windows=esptool.exe
+
+tools.esptool_py.network_cmd=python "{runtime.platform.path}/tools/espota.py"
+tools.esptool_py.network_cmd.windows="{runtime.platform.path}/tools/espota.exe"
+
+tools.gen_esp32part.cmd=python "{runtime.platform.path}/tools/gen_esp32part.py"
+tools.gen_esp32part.cmd.windows="{runtime.platform.path}/tools/gen_esp32part.exe"
+
+compiler.warning_flags=-w
+compiler.warning_flags.none=-w
+compiler.warning_flags.default=
+compiler.warning_flags.more=-Wall -Werror=all
+compiler.warning_flags.all=-Wall -Werror=all -Wextra
+
+compiler.path={runtime.tools.xtensa-esp32-elf-gcc.path}/bin/
+compiler.sdk.path={runtime.platform.path}/tools/sdk
+compiler.cpreprocessor.flags=-DESP_PLATFORM -DMBEDTLS_CONFIG_FILE="mbedtls/esp_config.h" -DHAVE_CONFIG_H "-I{compiler.sdk.path}/include/config" "-I{compiler.sdk.path}/include/app_trace" "-I{compiler.sdk.path}/include/app_update" "-I{compiler.sdk.path}/include/asio" "-I{compiler.sdk.path}/include/bootloader_support" "-I{compiler.sdk.path}/include/bt" "-I{compiler.sdk.path}/include/coap" "-I{compiler.sdk.path}/include/console" "-I{compiler.sdk.path}/include/driver" "-I{compiler.sdk.path}/include/esp-tls" "-I{compiler.sdk.path}/include/esp32" "-I{compiler.sdk.path}/include/esp_adc_cal" "-I{compiler.sdk.path}/include/esp_event" "-I{compiler.sdk.path}/include/esp_http_client" "-I{compiler.sdk.path}/include/esp_http_server" "-I{compiler.sdk.path}/include/esp_https_ota" "-I{compiler.sdk.path}/include/esp_ringbuf" "-I{compiler.sdk.path}/include/ethernet" "-I{compiler.sdk.path}/include/expat" "-I{compiler.sdk.path}/include/fatfs" "-I{compiler.sdk.path}/include/freemodbus" "-I{compiler.sdk.path}/include/freertos" "-I{compiler.sdk.path}/include/heap" "-I{compiler.sdk.path}/include/idf_test" "-I{compiler.sdk.path}/include/jsmn" "-I{compiler.sdk.path}/include/json" "-I{compiler.sdk.path}/include/libsodium" "-I{compiler.sdk.path}/include/log" "-I{compiler.sdk.path}/include/lwip" "-I{compiler.sdk.path}/include/mbedtls" "-I{compiler.sdk.path}/include/mdns" "-I{compiler.sdk.path}/include/micro-ecc" "-I{compiler.sdk.path}/include/mqtt" "-I{compiler.sdk.path}/include/newlib" "-I{compiler.sdk.path}/include/nghttp" "-I{compiler.sdk.path}/include/nvs_flash" "-I{compiler.sdk.path}/include/openssl" "-I{compiler.sdk.path}/include/protobuf-c" "-I{compiler.sdk.path}/include/protocomm" "-I{compiler.sdk.path}/include/pthread" "-I{compiler.sdk.path}/include/sdmmc" "-I{compiler.sdk.path}/include/smartconfig_ack" "-I{compiler.sdk.path}/include/soc" "-I{compiler.sdk.path}/include/spi_flash" "-I{compiler.sdk.path}/include/spiffs" "-I{compiler.sdk.path}/include/tcp_transport" "-I{compiler.sdk.path}/include/tcpip_adapter" "-I{compiler.sdk.path}/include/ulp" "-I{compiler.sdk.path}/include/vfs" "-I{compiler.sdk.path}/include/wear_levelling" "-I{compiler.sdk.path}/include/wifi_provisioning" "-I{compiler.sdk.path}/include/wpa_supplicant" "-I{compiler.sdk.path}/include/xtensa-debug-module" "-I{compiler.sdk.path}/include/esp32-camera" "-I{compiler.sdk.path}/include/esp-face" "-I{compiler.sdk.path}/include/fb_gfx"
+
+compiler.c.cmd=xtensa-esp32-elf-gcc
+compiler.c.flags=-std=gnu99 -Os -g3 -fstack-protector -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -mlongcalls -nostdlib -Wpointer-arith {compiler.warning_flags} -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -Wno-old-style-declaration -MMD -c
+
+compiler.cpp.cmd=xtensa-esp32-elf-g++
+compiler.cpp.flags=-std=gnu++11 -fno-exceptions -Os -g3 -Wpointer-arith -fexceptions -fstack-protector -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -mlongcalls -nostdlib {compiler.warning_flags} -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -fno-rtti -MMD -c
+
+compiler.S.cmd=xtensa-esp32-elf-gcc
+compiler.S.flags=-c -g3 -x assembler-with-cpp -MMD -mlongcalls
+
+compiler.c.elf.cmd=xtensa-esp32-elf-gcc
+compiler.c.elf.flags=-nostdlib "-L{compiler.sdk.path}/lib" "-L{compiler.sdk.path}/ld" -T esp32_out.ld -T esp32.common.ld -T esp32.rom.ld -T esp32.peripherals.ld -T esp32.rom.spiram_incompatible_fns.ld -u ld_include_panic_highint_hdl -u call_user_start_cpu0 -Wl,--gc-sections -Wl,-static -Wl,--undefined=uxTopUsedPriority  -u __cxa_guard_dummy -u __cxx_fatal_exception
+compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lcoexist -lwear_levelling -lesp_http_client -lprotobuf-c -lhal -lnewlib -ldriver -lbootloader_support -lpp -lfreemodbus -lmesh -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lfrmn -lapp_trace -lfr_coefficients -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lesp32-camera -lcxx -lxtensa-debug-module -ltcp_transport -lmdns -lvfs -lmtmn -lesp_ringbuf -lsoc -lcore -lfb_gfx -lsdmmc -llibsodium -lcoap -ltcpip_adapter -lprotocomm -lesp_event -limage_util -lc_nano -lesp-tls -lasio -lrtc -lspi_flash -lwpa2 -lwifi_provisioning -lesp32 -lface_recognition -lapp_update -lnghttp -lspiffs -lface_detection -lespnow -lnvs_flash -lesp_adc_cal -llog -ldl_lib -lsmartconfig_ack -lexpat -lfd_coefficients -lm -lmqtt -lc -lheap -lmbedtls -llwip -lnet80211 -lesp_http_server -lpthread -ljson -lesp_https_ota  -lstdc++
+
+compiler.as.cmd=xtensa-esp32-elf-as
+
+compiler.ar.cmd=xtensa-esp32-elf-ar
+compiler.ar.flags=cru
+
+compiler.size.cmd=xtensa-esp32-elf-size
+
+# This can be overriden in boards.txt
+build.flash_size=4MB
+build.flash_mode=dio
+build.boot=bootloader
+build.code_debug=0
+build.defines=
+build.extra_flags=-DESP32 -DDONT_USE_UPLOADTOBLOB -DUSE_BALTIMORE_CERT -DUSE_MBEDTLS
+#-DCORE_DEBUG_LEVEL={build.code_debug} {build.defines}
+
+# These can be overridden in platform.local.txt
+compiler.c.extra_flags=
+compiler.c.elf.extra_flags=
+compiler.S.extra_flags=
+compiler.cpp.extra_flags=
+compiler.ar.extra_flags=
+compiler.objcopy.eep.extra_flags=
+compiler.elf2hex.extra_flags=
+
+## Compile c files
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.cpreprocessor.flags} {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.c.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Compile c++ files
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpreprocessor.flags} {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Compile S files
+recipe.S.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.cpreprocessor.flags} {compiler.S.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.S.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+
+## Create archives
+recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"
+
+## Combine gc-sections, archives, and objects
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -Wl,--start-group {object_files} "{archive_file_path}" {compiler.c.elf.libs} -Wl,--end-group -Wl,-EL -o "{build.path}/{build.project_name}.elf"
+
+## Create eeprom
+recipe.objcopy.eep.pattern={tools.gen_esp32part.cmd} -q "{runtime.platform.path}/tools/partitions/{build.partitions}.csv" "{build.path}/{build.project_name}.partitions.bin"
+
+## Create hex
+recipe.objcopy.hex.pattern="{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
+recipe.objcopy.hex.pattern.linux=python "{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
+
+## Save hex
+recipe.output.tmp_file={build.project_name}.bin
+recipe.output.save_file={build.project_name}.{build.variant}.bin
+
+## Compute size
+recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"
+recipe.size.regex=^(?:\.iram0\.text|\.iram0\.vectors|\.dram0\.data|\.flash\.text|\.flash\.rodata|)\s+([0-9]+).*
+recipe.size.regex.data=^(?:\.dram0\.data|\.dram0\.bss|\.noinit)\s+([0-9]+).*
+
+# ------------------------------
+
+tools.esptool_py.upload.protocol=esp32
+tools.esptool_py.upload.params.verbose=
+tools.esptool_py.upload.params.quiet=
+tools.esptool_py.upload.pattern="{path}/{cmd}" --chip esp32 --port "{serial.port}" --baud 921600  --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size detect 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0x1000 "{runtime.platform.path}/tools/sdk/bin/bootloader_{build.boot}_{build.flash_freq}.bin" 0x10000 "{build.path}/{build.project_name}.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin"
+tools.esptool_py.upload.pattern.linux=python "{path}/{cmd}" --chip esp32 --port "{serial.port}" --baud 921600  --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size detect 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0x1000 "{runtime.platform.path}/tools/sdk/bin/bootloader_{build.boot}_{build.flash_freq}.bin" 0x10000 "{build.path}/{build.project_name}.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin"
+tools.esptool_py.upload.network_pattern={network_cmd} -i "{serial.port}" -p "{network.port}" "--auth={network.password}" -f "{build.path}/{build.project_name}.bin"
diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/sample_init.h b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/sample_init.h
new file mode 100644
index 0000000..5400379
--- /dev/null
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/sample_init.h
@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#ifndef SAMPLE_INIT_H
+#define SAMPLE_INIT_H
+#if defined(ARDUINO_ARCH_ESP8266)
+  #define sample_init esp8266_sample_init
+  #define is_esp_board
+  void esp8266_sample_init(const char* ssid, const char* password);
+#endif // ARDUINO_ARCH_ESP8266
+#if defined(ARDUINO_ARCH_ESP32)
+  #define sample_init esp32_sample_init
+  #define is_esp_board
+  void esp32_sample_init(const char* ssid, const char* password);
+#endif // ARDUINO_ARCH_ESP32
+#if defined(ARDUINO_ARCH_SAMD)
+  #define sample_init m0_sample_init
+  #define is_arduino_board
+  void m0_sample_init(const char* ssid, const char* password);
+#endif
+#endif // SAMPLE_INIT_H

From 47371d82626d43b39bd9e72240af7413158cc2db Mon Sep 17 00:00:00 2001
From: Khawaja-Usman-Riaz-Sehgal
 <70154356+Khawaja-Usman-Riaz-Sehgal@users.noreply.github.com>
Date: Thu, 6 May 2021 15:28:02 +0500
Subject: [PATCH 02/44] Added support for Arduino Nano 33 Iot

---
 README.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/README.md b/README.md
index 1db40ac..9b19be5 100644
--- a/README.md
+++ b/README.md
@@ -128,6 +128,40 @@ You should have the following ready before beginning with any board:
 
 9. Access the [Huzzah Get Started](https://azure.microsoft.com/en-us/documentation/samples/iot-hub-c-huzzah-getstartedkit/) tutorial to learn more about Microsoft Huzzah Dev Kit.
 
+
+## ARDUINO NANO 33 IOT
+
+#####  ARDUINO NANO 33 IOT board
+
+1. Install Arduino Nano33 IoT board support into your Arduino IDE.
+    
+    - Open Boards Manager from Tools > Board menu and install arduino nano 33 iot platform 1.8.11 or later
+
+    - Select your Arduino Nano 33 IoT board from Tools > Board menu after installation
+
+2. Open the `iothub_ll_telemetry_sample` example from the Arduino IDE File->Examples->AzureIoTHub menu.
+
+3. Update Wifi SSID/Password in `iot_configs.h`
+
+- Ensure you are using a wifi network that does not require additional manual steps after connection, such as opening a web browser.
+
+4. Update IoT Hub Connection string in `iot_configs.h`
+
+5. Configure board library using the automation script and `python3`. If you choose this method you can skip step 6.
+    - Clone or download this repo: `git clone https://github.com/Azure/azure-iot-pal-arduino.git` , navigate to the downloaded sub-folder: `cd azure-iot-pal-arduino/build_all/base-libraries/AzureIoTHub/src/scripts` , and check that the script `automate_board_config.py` exists in this location. If this folder or script cannot be located, download the script [directly](https://raw.githubusercontent.com/Azure/azure-iot-pal-arduino/master/build_all/base-libraries/AzureIoTHub/src/scripts/automate_board_config.py).
+    - Run the script E.x.: `python3 automate_board_config.py` and select appropriate options.
+    - Note: if you update or reinstall your board library in Arduino you will need to run this script again.
+
+6. Navigate to where your arduino nano 33 iot board package is located, typically in `C:\Users\<your username>\AppData\Local\Arduino15\packages` on Windows and `~/.arduino15/packages/` on Linux
+
+	- Navigate deeper in to `hardware/samd/<board package version>/` where the `platform.txt` file lives.
+	
+	- Copy the [`platform.local.txt`](https://github.com/Azure/azure-iot-arduino/blob/master/examples/iothub_ll_telemetry_sample/ArduinoNano33iot/platform.local.txt) file from the `ArduinoNano33iot` folder in the sample into the same folder as the `platform.txt`.
+	
+	- Alternatively, or for later versions of the Board Package, add the define `-DDONT_USE_UPLOADTOBLOB` to `build.extra_flags=` in `platform.txt` or a `platform.local.txt` that you create.
+	
+7. Run the sample.
+	
 ## License
 
 See [LICENSE](LICENSE) file.

From eac403d4004e0bb553d1080bf0fd80988c37c8a7 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 18 May 2021 11:35:56 +0500
Subject: [PATCH 03/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index a43f083..f019dc5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ env:
     - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
     - BOARD="esp8266:esp8266:thing"
     - BOARD="esp32:esp32:huzzah"
+    - BOARD="nano33iot:nano33iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3

From e45fb593b6705d40dc9b6823c4041b6c20a3f162 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 18 May 2021 11:45:00 +0500
Subject: [PATCH 04/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index f019dc5..4c0e930 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,9 +6,6 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
-    - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
-    - BOARD="esp8266:esp8266:thing"
-    - BOARD="esp32:esp32:huzzah"
     - BOARD="nano33iot:nano33iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
@@ -18,16 +15,6 @@ before_install:
   - tar xf arduino-$IDE_VERSION-linux64.tar.xz
   - mv arduino-$IDE_VERSION $HOME/arduino-ide
   - export PATH=$PATH:$HOME/arduino-ide
-  - if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
-      arduino --pref "boardsmanager.additional.urls=http://arduino.esp8266.com/stable/package_esp8266com_index.json" --install-boards esp8266:esp8266;
-      arduino --pref "boardsmanager.additional.urls=" --save-prefs;
-      arduino --install-library NTPClient;
-    fi
-  - if [[ "$BOARD" =~ "esp32:esp32:" ]]; then
-      arduino --pref "boardsmanager.additional.urls=https://dl.espressif.com/dl/package_esp32_index.json" --install-boards esp32:esp32;
-      arduino --pref "boardsmanager.additional.urls=" --save-prefs;
-      arduino --install-library NTPClient;
-    fi
 
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {

From 17d170d1cb15f2f9b50153f3c1c5a184b6611eae Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 18 May 2021 11:52:12 +0500
Subject: [PATCH 05/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 4c0e930..14ac577 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
-    - BOARD="nano33iot:nano33iot"
+    - BOARD="arduino:samd:nano33iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3

From 883a153160d4438e3c1c53b5f77aacacd614210e Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 18 May 2021 11:57:43 +0500
Subject: [PATCH 06/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 14ac577..896b665 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
-    - BOARD="arduino:samd:nano33iot"
+    - BOARD="arduino:arch:nano33iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3

From bcc91233bd532c23cd0856510f8f2d58feaf163c Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 18 May 2021 12:00:22 +0500
Subject: [PATCH 07/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 896b665..4aa9f8d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
-    - BOARD="arduino:arch:nano33iot"
+    - BOARD="arduino:samd:arduino_nano_33_iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3

From d0ee6379a0f56f8406db08f2ac82f518d2aa04d5 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 19 May 2021 11:14:57 +0500
Subject: [PATCH 08/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 4aa9f8d..deb583f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,9 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
+    - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
+    - BOARD="esp8266:esp8266:thing"
+    - BOARD="esp32:esp32:huzzah"
     - BOARD="arduino:samd:arduino_nano_33_iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
@@ -15,7 +18,20 @@ before_install:
   - tar xf arduino-$IDE_VERSION-linux64.tar.xz
   - mv arduino-$IDE_VERSION $HOME/arduino-ide
   - export PATH=$PATH:$HOME/arduino-ide
-
+  - if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
+      arduino --pref "boardsmanager.additional.urls=http://arduino.esp8266.com/stable/package_esp8266com_index.json" --install-boards esp8266:esp8266;
+      arduino --pref "boardsmanager.additional.urls=" --save-prefs;
+      arduino --install-library NTPClient;
+    fi
+  - if [[ "$BOARD" =~ "esp32:esp32:" ]]; then
+      arduino --pref "boardsmanager.additional.urls=https://dl.espressif.com/dl/package_esp32_index.json" --install-boards esp32:esp32;
+      arduino --pref "boardsmanager.additional.urls=" --save-prefs;
+      arduino --install-library NTPClient;
+    fi
+  - if [[ "$BOARD" =~ "arduino:samd:" ]]; then 
+      arduino --install-boards arduino:samd; 
+      arduino --install-library WiFiNINA;
+    fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
       EXAMPLE_SKETCH=$PWD/examples/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino;

From 2e799ddcbf04de7a0b5f93ab5a895c7769356e6e Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 19 May 2021 11:42:54 +0500
Subject: [PATCH 09/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index deb583f..43d971b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,10 +6,7 @@ env:
   global:
     - IDE_VERSION=1.8.10
   matrix:
-    - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
-    - BOARD="esp8266:esp8266:thing"
-    - BOARD="esp32:esp32:huzzah"
-    - BOARD="arduino:samd:arduino_nano_33_iot"
+    - BOARD="arduino:samd:nano_33_iot"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3

From ce5f2f4c2aac731ec834be384b76e56ed03be0cf Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 19 May 2021 12:33:51 +0500
Subject: [PATCH 10/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 43d971b..55e75d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,4 +42,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch telemetry_sample.c
+  - buildExampleSketch iothub_ll_telemetry_sample.ino

From 2538ca1ccdb661593e7476821f76253dfed6d7fd Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 19 May 2021 12:55:59 +0500
Subject: [PATCH 11/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 55e75d7..e1229af 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,7 +31,7 @@ before_install:
     fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
-      EXAMPLE_SKETCH=$PWD/examples/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino;
+      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino;
 
       arduino --verbose-build --verify --board $BOARD $EXAMPLE_SKETCH;
     }

From 6483a382acdeaeb9077fa3f867325ea2e83e2ad7 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 20 May 2021 14:33:53 +0500
Subject: [PATCH 12/44] modified platform.local.txt file for nano33iot board

---
 .../platform.local.txt                        | 284 +++++++++++++-----
 1 file changed, 212 insertions(+), 72 deletions(-)

diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
index 87bccfa..a0c81aa 100644
--- a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
@@ -1,103 +1,243 @@
-name=Nano33IoT Arduino
-version=1.0.0
-
-
-
-tools.esptool_py.path={runtime.tools.esptool_py.path}
-tools.esptool_py.cmd=esptool
-tools.esptool_py.cmd.linux=esptool.py
-tools.esptool_py.cmd.windows=esptool.exe
-
-tools.esptool_py.network_cmd=python "{runtime.platform.path}/tools/espota.py"
-tools.esptool_py.network_cmd.windows="{runtime.platform.path}/tools/espota.exe"
-
-tools.gen_esp32part.cmd=python "{runtime.platform.path}/tools/gen_esp32part.py"
-tools.gen_esp32part.cmd.windows="{runtime.platform.path}/tools/gen_esp32part.exe"
+# Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+# Arduino SAMD Core and platform.
+#
+# For more info:
+# https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
+
+name=Arduino SAMD (32-bits ARM Cortex-M0+) Boards
+version=1.8.11
+
+# Compile variables
+# -----------------
 
 compiler.warning_flags=-w
 compiler.warning_flags.none=-w
 compiler.warning_flags.default=
-compiler.warning_flags.more=-Wall -Werror=all
-compiler.warning_flags.all=-Wall -Werror=all -Wextra
-
-compiler.path={runtime.tools.xtensa-esp32-elf-gcc.path}/bin/
-compiler.sdk.path={runtime.platform.path}/tools/sdk
-compiler.cpreprocessor.flags=-DESP_PLATFORM -DMBEDTLS_CONFIG_FILE="mbedtls/esp_config.h" -DHAVE_CONFIG_H "-I{compiler.sdk.path}/include/config" "-I{compiler.sdk.path}/include/app_trace" "-I{compiler.sdk.path}/include/app_update" "-I{compiler.sdk.path}/include/asio" "-I{compiler.sdk.path}/include/bootloader_support" "-I{compiler.sdk.path}/include/bt" "-I{compiler.sdk.path}/include/coap" "-I{compiler.sdk.path}/include/console" "-I{compiler.sdk.path}/include/driver" "-I{compiler.sdk.path}/include/esp-tls" "-I{compiler.sdk.path}/include/esp32" "-I{compiler.sdk.path}/include/esp_adc_cal" "-I{compiler.sdk.path}/include/esp_event" "-I{compiler.sdk.path}/include/esp_http_client" "-I{compiler.sdk.path}/include/esp_http_server" "-I{compiler.sdk.path}/include/esp_https_ota" "-I{compiler.sdk.path}/include/esp_ringbuf" "-I{compiler.sdk.path}/include/ethernet" "-I{compiler.sdk.path}/include/expat" "-I{compiler.sdk.path}/include/fatfs" "-I{compiler.sdk.path}/include/freemodbus" "-I{compiler.sdk.path}/include/freertos" "-I{compiler.sdk.path}/include/heap" "-I{compiler.sdk.path}/include/idf_test" "-I{compiler.sdk.path}/include/jsmn" "-I{compiler.sdk.path}/include/json" "-I{compiler.sdk.path}/include/libsodium" "-I{compiler.sdk.path}/include/log" "-I{compiler.sdk.path}/include/lwip" "-I{compiler.sdk.path}/include/mbedtls" "-I{compiler.sdk.path}/include/mdns" "-I{compiler.sdk.path}/include/micro-ecc" "-I{compiler.sdk.path}/include/mqtt" "-I{compiler.sdk.path}/include/newlib" "-I{compiler.sdk.path}/include/nghttp" "-I{compiler.sdk.path}/include/nvs_flash" "-I{compiler.sdk.path}/include/openssl" "-I{compiler.sdk.path}/include/protobuf-c" "-I{compiler.sdk.path}/include/protocomm" "-I{compiler.sdk.path}/include/pthread" "-I{compiler.sdk.path}/include/sdmmc" "-I{compiler.sdk.path}/include/smartconfig_ack" "-I{compiler.sdk.path}/include/soc" "-I{compiler.sdk.path}/include/spi_flash" "-I{compiler.sdk.path}/include/spiffs" "-I{compiler.sdk.path}/include/tcp_transport" "-I{compiler.sdk.path}/include/tcpip_adapter" "-I{compiler.sdk.path}/include/ulp" "-I{compiler.sdk.path}/include/vfs" "-I{compiler.sdk.path}/include/wear_levelling" "-I{compiler.sdk.path}/include/wifi_provisioning" "-I{compiler.sdk.path}/include/wpa_supplicant" "-I{compiler.sdk.path}/include/xtensa-debug-module" "-I{compiler.sdk.path}/include/esp32-camera" "-I{compiler.sdk.path}/include/esp-face" "-I{compiler.sdk.path}/include/fb_gfx"
-
-compiler.c.cmd=xtensa-esp32-elf-gcc
-compiler.c.flags=-std=gnu99 -Os -g3 -fstack-protector -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -mlongcalls -nostdlib -Wpointer-arith {compiler.warning_flags} -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -Wno-old-style-declaration -MMD -c
-
-compiler.cpp.cmd=xtensa-esp32-elf-g++
-compiler.cpp.flags=-std=gnu++11 -fno-exceptions -Os -g3 -Wpointer-arith -fexceptions -fstack-protector -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -mlongcalls -nostdlib {compiler.warning_flags} -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -fno-rtti -MMD -c
-
-compiler.S.cmd=xtensa-esp32-elf-gcc
-compiler.S.flags=-c -g3 -x assembler-with-cpp -MMD -mlongcalls
-
-compiler.c.elf.cmd=xtensa-esp32-elf-gcc
-compiler.c.elf.flags=-nostdlib "-L{compiler.sdk.path}/lib" "-L{compiler.sdk.path}/ld" -T esp32_out.ld -T esp32.common.ld -T esp32.rom.ld -T esp32.peripherals.ld -T esp32.rom.spiram_incompatible_fns.ld -u ld_include_panic_highint_hdl -u call_user_start_cpu0 -Wl,--gc-sections -Wl,-static -Wl,--undefined=uxTopUsedPriority  -u __cxa_guard_dummy -u __cxx_fatal_exception
-compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lcoexist -lwear_levelling -lesp_http_client -lprotobuf-c -lhal -lnewlib -ldriver -lbootloader_support -lpp -lfreemodbus -lmesh -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lfrmn -lapp_trace -lfr_coefficients -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lesp32-camera -lcxx -lxtensa-debug-module -ltcp_transport -lmdns -lvfs -lmtmn -lesp_ringbuf -lsoc -lcore -lfb_gfx -lsdmmc -llibsodium -lcoap -ltcpip_adapter -lprotocomm -lesp_event -limage_util -lc_nano -lesp-tls -lasio -lrtc -lspi_flash -lwpa2 -lwifi_provisioning -lesp32 -lface_recognition -lapp_update -lnghttp -lspiffs -lface_detection -lespnow -lnvs_flash -lesp_adc_cal -llog -ldl_lib -lsmartconfig_ack -lexpat -lfd_coefficients -lm -lmqtt -lc -lheap -lmbedtls -llwip -lnet80211 -lesp_http_server -lpthread -ljson -lesp_https_ota  -lstdc++
-
-compiler.as.cmd=xtensa-esp32-elf-as
-
-compiler.ar.cmd=xtensa-esp32-elf-ar
-compiler.ar.flags=cru
-
-compiler.size.cmd=xtensa-esp32-elf-size
-
-# This can be overriden in boards.txt
-build.flash_size=4MB
-build.flash_mode=dio
-build.boot=bootloader
-build.code_debug=0
-build.defines=
-build.extra_flags=-DESP32 -DDONT_USE_UPLOADTOBLOB -DUSE_BALTIMORE_CERT -DUSE_MBEDTLS
-#-DCORE_DEBUG_LEVEL={build.code_debug} {build.defines}
+compiler.warning_flags.more=-Wall
+compiler.warning_flags.all=-Wall -Wextra
+
+# EXPERIMENTAL feature: optimization flags
+#  - this is alpha and may be subject to change without notice
+compiler.optimization_flags=-Os
+compiler.optimization_flags.release=-Os
+compiler.optimization_flags.debug=-Og -g3
+
+compiler.path={runtime.tools.arm-none-eabi-gcc-7-2017q4.path}/bin/
+compiler.c.cmd=arm-none-eabi-gcc
+compiler.c.flags=-mcpu={build.mcu} -mthumb -c -g {compiler.optimization_flags} {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD
+compiler.c.elf.cmd=arm-none-eabi-g++
+compiler.c.elf.flags={compiler.optimization_flags} -Wl,--gc-sections -save-temps
+compiler.S.cmd=arm-none-eabi-gcc
+compiler.S.flags=-c -g -x assembler-with-cpp -MMD
+compiler.cpp.cmd=arm-none-eabi-g++
+compiler.cpp.flags=-mcpu={build.mcu} -mthumb -c -g {compiler.optimization_flags} {compiler.warning_flags} -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD
+compiler.ar.cmd=arm-none-eabi-ar
+compiler.ar.flags=rcs
+compiler.objcopy.cmd=arm-none-eabi-objcopy
+compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
+compiler.elf2hex.bin.flags=-O binary
+compiler.elf2hex.hex.flags=-O ihex -R .eeprom
+compiler.elf2hex.cmd=arm-none-eabi-objcopy
+compiler.ldflags=-mcpu={build.mcu} -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align
+compiler.size.cmd=arm-none-eabi-size
+compiler.define=-DARDUINO=
+compiler.readelf.cmd=arm-none-eabi-readelf
+
+# this can be overriden in boards.txt
+build.extra_flags= "-DDONT_USE_UPLOADTOBLOB" 
 
 # These can be overridden in platform.local.txt
 compiler.c.extra_flags=
 compiler.c.elf.extra_flags=
-compiler.S.extra_flags=
+#compiler.c.elf.extra_flags=-v
 compiler.cpp.extra_flags=
+compiler.S.extra_flags=
 compiler.ar.extra_flags=
-compiler.objcopy.eep.extra_flags=
 compiler.elf2hex.extra_flags=
 
+compiler.arm.cmsis.c.flags="-I{runtime.tools.CMSIS-4.5.0.path}/CMSIS/Include/" "-I{runtime.tools.CMSIS-Atmel-1.2.0.path}/CMSIS/Device/ATMEL/"
+compiler.arm.cmsis.ldflags="-L{runtime.tools.CMSIS-4.5.0.path}/CMSIS/Lib/GCC/" -larm_cortexM0l_math
+
+compiler.libraries.ldflags=
+
+# USB Flags
+# ---------
+build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} -DUSBCON '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}'
+
+# Default usb manufacturer will be replaced at compile time using
+# numeric vendor ID if available or by board's specific value.
+build.usb_manufacturer="Unknown"
+
+# Compile patterns
+# ----------------
+
 ## Compile c files
-recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.cpreprocessor.flags} {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.c.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {compiler.arm.cmsis.c.flags} "-I{build.core.path}/api/deprecated" "-I{build.core.path}/api/deprecated-avr-comp" {includes} "{source_file}" -o "{object_file}"
 
 ## Compile c++ files
-recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpreprocessor.flags} {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {compiler.arm.cmsis.c.flags} "-I{build.core.path}/api/deprecated" "-I{build.core.path}/api/deprecated-avr-comp" {includes} "{source_file}" -o "{object_file}"
 
 ## Compile S files
-recipe.S.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.cpreprocessor.flags} {compiler.S.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_BOARD="{build.board}" -DARDUINO_VARIANT="{build.variant}" {compiler.S.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{object_file}"
+recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {compiler.arm.cmsis.c.flags} "-I{build.core.path}/api/deprecated" "-I{build.core.path}/api/deprecated-avr-comp" {includes} "{source_file}" -o "{object_file}"
 
 ## Create archives
+# archive_file_path is needed for backwards compatibility with IDE 1.6.5 or older, IDE 1.6.6 or newer overrides this value
+archive_file_path={build.path}/{archive_file}
 recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"
 
 ## Combine gc-sections, archives, and objects
-recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -Wl,--start-group {object_files} "{archive_file_path}" {compiler.c.elf.libs} -Wl,--end-group -Wl,-EL -o "{build.path}/{build.project_name}.elf"
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}"  "-L{build.path}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" --specs=nano.specs --specs=nosys.specs {compiler.ldflags} -o "{build.path}/{build.project_name}.elf" {object_files} {compiler.libraries.ldflags} -Wl,--start-group {compiler.arm.cmsis.ldflags} -lm "{build.path}/{archive_file}" -Wl,--end-group
+
+## Create output (bin file)
+recipe.objcopy.bin.pattern="{compiler.path}{compiler.elf2hex.cmd}" {compiler.elf2hex.bin.flags} {compiler.elf2hex.extra_flags} "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.bin"
 
-## Create eeprom
-recipe.objcopy.eep.pattern={tools.gen_esp32part.cmd} -q "{runtime.platform.path}/tools/partitions/{build.partitions}.csv" "{build.path}/{build.project_name}.partitions.bin"
+## Create output (hex file)
+recipe.objcopy.hex.pattern="{compiler.path}{compiler.elf2hex.cmd}" {compiler.elf2hex.hex.flags} {compiler.elf2hex.extra_flags} "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.hex"
 
-## Create hex
-recipe.objcopy.hex.pattern="{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
-recipe.objcopy.hex.pattern.linux=python "{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
+build.preferred_out_format=bin
 
 ## Save hex
-recipe.output.tmp_file={build.project_name}.bin
-recipe.output.save_file={build.project_name}.{build.variant}.bin
+recipe.output.tmp_file={build.project_name}.{build.preferred_out_format}
+recipe.output.save_file={build.project_name}.{build.variant}.{build.preferred_out_format}
 
 ## Compute size
 recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"
-recipe.size.regex=^(?:\.iram0\.text|\.iram0\.vectors|\.dram0\.data|\.flash\.text|\.flash\.rodata|)\s+([0-9]+).*
-recipe.size.regex.data=^(?:\.dram0\.data|\.dram0\.bss|\.noinit)\s+([0-9]+).*
+recipe.size.regex=^(?:\.text|\.data|)\s+([0-9]+).*
+recipe.size.regex.data=^(?:\.data|\.bss)\s+([0-9]+).*
+
+
+# Debugger configuration (general options)
+# ----------------------------------------
+# EXPERIMENTAL feature:
+#  - this is alpha and may be subject to change without notice
+debug.executable={build.path}/{build.project_name}.elf
+debug.toolchain=gcc
+debug.toolchain.path={runtime.tools.arm-none-eabi-gcc-7-2017q4.path}/bin/
+debug.toolchain.prefix=arm-none-eabi-
+debug.server=openocd
+debug.server.openocd.path={runtime.tools.openocd-0.10.0-arduino7.path}/bin/openocd
+debug.server.openocd.scripts_dir={runtime.tools.openocd-0.10.0-arduino7.path}/share/openocd/scripts/
+debug.server.openocd.script={runtime.platform.path}/variants/{build.variant}/{build.openocdscript}
+
+# Upload/Debug tools
+# ------------------
+
+#
+# AVRDUDE
+#
+tools.avrdude.path={runtime.tools.avrdude.path}
+tools.avrdude.cmd={path}/bin/avrdude
+tools.avrdude.config.path={path}/etc/avrdude.conf
+
+tools.avrdude.upload.params.verbose=-v -v
+tools.avrdude.upload.params.quiet=-q -q
+tools.avrdude.upload.params.noverify=-V
+tools.avrdude.upload.pattern="{cmd}" "-C{config.path}" {upload.verbose} -p{build.emu.mcu} -c{upload.protocol} -P{serial.port} -b{upload.speed} "-Uflash:w:{build.path}/{build.project_name}.hex:i"
+
+tools.avrdude_remote.upload.pattern="openocd --version 2>&1 | grep 2016 && if opkg update; then opkg upgrade openocd; exit 1; else echo 'Please connect your board to the Internet in order to upgrade tools' >&2; exit 1; fi || /usr/bin/run-avrdude /tmp/sketch.hex"
+
+tools.avrdude.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
+tools.avrdude.upload.network_pattern="{network_cmd}" -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
+
+#
+# BOSSA
+#
+tools.bossac.path={runtime.tools.bossac-1.7.0-arduino3.path}
+tools.bossac.cmd=bossac
+tools.bossac.cmd.windows=bossac.exe
+
+tools.bossac.upload.params.verbose=-i -d
+tools.bossac.upload.params.quiet=
+tools.bossac.upload.pattern="{path}/{cmd}" {upload.verbose} --port={serial.port.file} -U {upload.native_usb} -i -e -w -v "{build.path}/{build.project_name}.bin" -R
+
+tools.bossac_remote.upload.pattern=/usr/bin/run-bossac {upload.verbose} --port=ttyATH0 -U {upload.native_usb} -e -w -v /tmp/sketch.bin -R
+
+arduinoota.extraflags=
+tools.bossac.network_cmd={runtime.tools.arduinoOTA-1.3.0.path}/bin/arduinoOTA
+tools.bossac.upload.network_pattern="{network_cmd}" -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b {arduinoota.extraflags}
+
+#
+# BOSSA (ignore binary size)
+#
+tools.bossacI.path={runtime.tools.bossac-1.7.0-arduino3.path}
+tools.bossacI.cmd=bossac
+tools.bossacI.cmd.windows=bossac.exe
+
+tools.bossacI.upload.params.verbose=-i -d
+tools.bossacI.upload.params.quiet=
+tools.bossacI.upload.pattern="{path}/{cmd}" {upload.verbose} --port={serial.port.file} -I -U {upload.native_usb} -i -e -w "{build.path}/{build.project_name}.bin" -R
+
+tools.bossacI_remote.upload.pattern=/usr/bin/run-bossac {upload.verbose} --port=ttyATH0 -U {upload.native_usb} -e -w -v /tmp/sketch.bin -R
+
+tools.bossacI.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
+tools.bossacI.upload.network_pattern="{network_cmd}" -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
+
+
+#
+# OpenOCD sketch upload
+#
+
+tools.openocd.path={runtime.tools.openocd-0.10.0-arduino7.path}
+tools.openocd.cmd=bin/openocd
+tools.openocd.cmd.windows=bin/openocd.exe
+
+tools.openocd.upload.params.verbose=-d2
+tools.openocd.upload.params.quiet=-d0
+tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset 0x2000; shutdown"
+
+tools.openocd.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
+tools.openocd.upload.network_pattern={network_cmd} -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
+
+tools.openocd.program.params.verbose=-d2
+tools.openocd.program.params.quiet=-d0
+tools.openocd.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.hex} verify reset; shutdown"
+
+tools.openocd.erase.params.verbose=-d3
+tools.openocd.erase.params.quiet=-d0
+tools.openocd.erase.pattern=
+
+tools.openocd.bootloader.params.verbose=-d2
+tools.openocd.bootloader.params.quiet=-d0
+tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; init; halt; at91samd bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
+
+#
+# OpenOCD sketch upload - version with configurable bootloader size
+# FIXME: this programmer is a workaround for default options being overwritten by uploadUsingPreferences
+#
+
+tools.openocd-withbootsize.path={runtime.tools.openocd-0.10.0-arduino7.path}
+tools.openocd-withbootsize.cmd=bin/openocd
+tools.openocd-withbootsize.cmd.windows=bin/openocd.exe
+
+tools.openocd-withbootsize.upload.params.verbose=-d2
+tools.openocd-withbootsize.upload.params.quiet=-d0
+tools.openocd-withbootsize.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset {bootloader.size}; shutdown"
+
+# Program flashes the binary at 0x0000, so use the linker script without_bootloader
+tools.openocd-withbootsize.program.params.verbose=-d2
+tools.openocd-withbootsize.program.params.quiet=-d0
+tools.openocd-withbootsize.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.elf} verify reset; shutdown"
+
+tools.openocd-withbootsize.erase.params.verbose=-d3
+tools.openocd-withbootsize.erase.params.quiet=-d0
+tools.openocd-withbootsize.erase.pattern=
 
-# ------------------------------
+tools.openocd-withbootsize.bootloader.params.verbose=-d2
+tools.openocd-withbootsize.bootloader.params.quiet=-d0
+tools.openocd-withbootsize.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; init; halt; at91samd bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
 
-tools.esptool_py.upload.protocol=esp32
-tools.esptool_py.upload.params.verbose=
-tools.esptool_py.upload.params.quiet=
-tools.esptool_py.upload.pattern="{path}/{cmd}" --chip esp32 --port "{serial.port}" --baud 921600  --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size detect 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0x1000 "{runtime.platform.path}/tools/sdk/bin/bootloader_{build.boot}_{build.flash_freq}.bin" 0x10000 "{build.path}/{build.project_name}.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin"
-tools.esptool_py.upload.pattern.linux=python "{path}/{cmd}" --chip esp32 --port "{serial.port}" --baud 921600  --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size detect 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0x1000 "{runtime.platform.path}/tools/sdk/bin/bootloader_{build.boot}_{build.flash_freq}.bin" 0x10000 "{build.path}/{build.project_name}.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin"
-tools.esptool_py.upload.network_pattern={network_cmd} -i "{serial.port}" -p "{network.port}" "--auth={network.password}" -f "{build.path}/{build.project_name}.bin"

From 6e27d3115ab26602f30f0fb377fafe611e8260bc Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Fri, 21 May 2021 12:20:12 +0500
Subject: [PATCH 13/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index e1229af..56ad886 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ language: generic
 env:
   global:
     - IDE_VERSION=1.8.10
+    - build.extra_flags= "-DDONT_USE_UPLOADTOBLOB" 
   matrix:
     - BOARD="arduino:samd:nano_33_iot"
 before_install:

From d57a0e5a89e2225b0be70cd71d1a04100e6ca5fa Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Fri, 21 May 2021 12:25:10 +0500
Subject: [PATCH 14/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 56ad886..1049bc7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,8 @@ language: generic
 env:
   global:
     - IDE_VERSION=1.8.10
-    - build.extra_flags= "-DDONT_USE_UPLOADTOBLOB" 
+  flags:
+    - DDONT_USE_UPLOADTOBLOB 
   matrix:
     - BOARD="arduino:samd:nano_33_iot"
 before_install:

From b365b6e30fefb883633861578f45059edc31bcd9 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Mon, 24 May 2021 11:58:12 +0500
Subject: [PATCH 15/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 1049bc7..9fb844f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,4 +44,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch iothub_ll_telemetry_sample.ino
+  - buildExampleSketch ArduinoNano33iot/iothub_ll_telemetry_sample

From 8464d0e1f7af804a3047c959db6119092230ff2a Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Mon, 24 May 2021 12:10:03 +0500
Subject: [PATCH 16/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 9fb844f..1a69160 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,4 +44,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch ArduinoNano33iot/iothub_ll_telemetry_sample
+  - buildExampleSketch iothub_ll_telemetry_sample

From 4c25c3b5e313f8d8fb561e7799f72c90d6891c43 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Mon, 24 May 2021 12:42:26 +0500
Subject: [PATCH 17/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 1a69160..7d407da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,9 @@ language: generic
 env:
   global:
     - IDE_VERSION=1.8.10
-  flags:
-    - DDONT_USE_UPLOADTOBLOB 
+  branches:
+    only:
+    - ArduinoNano33IoT_example_support
   matrix:
     - BOARD="arduino:samd:nano_33_iot"
 before_install:

From 7d91c01b7548cca38abe85d01d306fed69b8cf0a Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:36:25 +0500
Subject: [PATCH 18/44] add platformio.ini

---
 .pio/build/nano_33_iot/.sconsign38.dblite  | Bin 0 -> 4534 bytes
 .pio/build/nano_33_iot/src/certs/certs.c.o | Bin 0 -> 5072 bytes
 .pio/build/project.checksum                |   1 +
 .vscode/settings.json                      |  12 ++++++++++
 .vscode/tasks.json                         |  26 +++++++++++++++++++++
 platformio.ini                             |   5 ++++
 6 files changed, 44 insertions(+)
 create mode 100644 .pio/build/nano_33_iot/.sconsign38.dblite
 create mode 100644 .pio/build/nano_33_iot/src/certs/certs.c.o
 create mode 100644 .pio/build/project.checksum
 create mode 100644 .vscode/settings.json
 create mode 100644 .vscode/tasks.json
 create mode 100644 platformio.ini

diff --git a/.pio/build/nano_33_iot/.sconsign38.dblite b/.pio/build/nano_33_iot/.sconsign38.dblite
new file mode 100644
index 0000000000000000000000000000000000000000..424b10fabcc17d4ec04d5128f39658bde3299ee6
GIT binary patch
literal 4534
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literal 0
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diff --git a/.pio/build/nano_33_iot/src/certs/certs.c.o b/.pio/build/nano_33_iot/src/certs/certs.c.o
new file mode 100644
index 0000000000000000000000000000000000000000..c0310ddaa8a3f2822a14b307e918b8cd4989188e
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/.pio/build/project.checksum b/.pio/build/project.checksum
new file mode 100644
index 0000000..4b4c6b8
--- /dev/null
+++ b/.pio/build/project.checksum
@@ -0,0 +1 @@
+7730d7177f85c99afaf4bec37fc866b3c035c276
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..6c3cbaa
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,12 @@
+{
+    "cSpell.words": [
+        "ddont",
+        "iothub",
+        "ll",
+        "samd",
+        "sample",
+        "telemetry",
+        "uploadtoblob",
+        "use"
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..f97e9e6
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,26 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "msbuild",
+            "args": [
+                // Ask msbuild to generate full paths for file names.
+                "/property:GenerateFullPaths=true",
+                "/t:build",
+                // Do not generate summary otherwise it leads to duplicate errors in Problems panel
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "group": "build",
+            "presentation": {
+                // Reveal the output only if unrecognized errors occur.
+                "reveal": "silent"
+            },
+            // Use the standard MS compiler pattern to detect errors, warnings and infos
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
new file mode 100644
index 0000000..8736860
--- /dev/null
+++ b/platformio.ini
@@ -0,0 +1,5 @@
+[env:nano_33_iot]
+platform = atmelsam
+board = nano_33_iot
+framework = arduino
+build_flags = -DDONT_USE_UPLOADTOBLOB
\ No newline at end of file

From e8cda102c243ad401e52278bf94578714c44ed99 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:43:11 +0500
Subject: [PATCH 19/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 7d407da..4ac053a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,5 +44,5 @@ install:
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
-script:
-  - buildExampleSketch iothub_ll_telemetry_sample
+# script:
+#   - buildExampleSketch iothub_ll_telemetry_sample

From d1432e452cc32ecee16ac378f8df344dd2b15473 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:50:27 +0500
Subject: [PATCH 20/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 4ac053a..3a5a9ea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,5 +44,5 @@ install:
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
-# script:
-#   - buildExampleSketch iothub_ll_telemetry_sample
+ script:
+   - buildExampleSketch()

From 0a266aaf128ca2329710dd73f043c95dcae26c43 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:51:03 +0500
Subject: [PATCH 21/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 3a5a9ea..6c323cb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,4 +45,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
  script:
-   - buildExampleSketch()
+  - buildExampleSketch()

From a8d2ac9557f66fe0e2928391b4e17033c35b04da Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:54:01 +0500
Subject: [PATCH 22/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 6c323cb..5fffaee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,5 +44,3 @@ install:
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
- script:
-  - buildExampleSketch()

From bfc85c03974c90e7a45cb707e4bab0d1517942db Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 12:55:14 +0500
Subject: [PATCH 23/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 5fffaee..4c174a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,3 +44,5 @@ install:
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
+script:
+  - buildExampleSketch()
\ No newline at end of file

From eb91d63569e967cddb1c98d914307b95edc7a349 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 13:00:16 +0500
Subject: [PATCH 24/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 4c174a1..1972f31 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,4 +45,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch()
\ No newline at end of file
+  - buildExampleSketch $EXAMPLE_SKETCH
\ No newline at end of file

From b66c6379bc79fbc4fd1ecd20d212d9998d55d38c Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 13:11:26 +0500
Subject: [PATCH 25/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 1972f31..36db5c1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,4 +45,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch $EXAMPLE_SKETCH
\ No newline at end of file
+  - buildExampleSketch 
\ No newline at end of file

From 869e6b49346fd6989b5e7390fa391429804d0091 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 13:38:17 +0500
Subject: [PATCH 26/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 36db5c1..67c78a8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,9 +40,8 @@ before_install:
     }
 install:
   - arduino --install-library "AzureIoTUtility"
-  - arduino --install-library "AzureIoTSocket_WiFi"
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch 
\ No newline at end of file
+  - buildExampleSketch iothub_ll_telemetry_sample

From 4f7f4bc3b6522a66d2df0f09763de28c988af3a3 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 14:30:55 +0500
Subject: [PATCH 27/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 67c78a8..3d72fea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,4 +44,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch iothub_ll_telemetry_sample
+  - buildExampleSketch $PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample

From ba34ff6b1895588bf1116da35e45194e6ac0a77c Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 14:43:58 +0500
Subject: [PATCH 28/44] modified .travis.yml file for nano33iot board

---
 .../iothub_ll_telemetry_sample/platform.local.txt               | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
index a0c81aa..ab5bf54 100644
--- a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/platform.local.txt
@@ -59,7 +59,7 @@ compiler.define=-DARDUINO=
 compiler.readelf.cmd=arm-none-eabi-readelf
 
 # this can be overriden in boards.txt
-build.extra_flags= "-DDONT_USE_UPLOADTOBLOB" 
+build.extra_flags= -DDONT_USE_UPLOADTOBLOB 
 
 # These can be overridden in platform.local.txt
 compiler.c.extra_flags=

From 2e7fa22583671f693f533ab7eb9df615a7acc7be Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Tue, 25 May 2021 17:17:41 +0500
Subject: [PATCH 29/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 3d72fea..36f8627 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,6 +42,7 @@ install:
   - arduino --install-library "AzureIoTUtility"
   - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
+  - arduino --install-library "AzureIoTHub"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch $PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample
+  - buildExampleSketch $PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample;

From 9c2f06902413031fdcfccd3b2dc6c0317d0743b3 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 26 May 2021 12:42:40 +0500
Subject: [PATCH 30/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 36f8627..35aded4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@
 language: generic
 env:
   global:
-    - IDE_VERSION=1.8.10
+    - IDE_VERSION=1.6.11
   branches:
     only:
     - ArduinoNano33IoT_example_support

From 3a47aaad52a2eee5dcf115d61befd3e7b391c234 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 26 May 2021 13:02:34 +0500
Subject: [PATCH 31/44] add flags in platformio.ini file

---
 platformio.ini | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platformio.ini b/platformio.ini
index 8736860..2758a17 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -2,4 +2,4 @@
 platform = atmelsam
 board = nano_33_iot
 framework = arduino
-build_flags = -DDONT_USE_UPLOADTOBLOB
\ No newline at end of file
+build_flags = -DDONT_USE_UPLOADTOBLOB -DUSE_BALTIMORE_CERT -DUSE_MBEDTLS
\ No newline at end of file

From 952bfcb6646d948e40dd6d9fdceee72f4b073082 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 26 May 2021 13:03:04 +0500
Subject: [PATCH 32/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 35aded4..c2004c6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@
 language: generic
 env:
   global:
-    - IDE_VERSION=1.6.11
+    - IDE_VERSION=1.8.11
   branches:
     only:
     - ArduinoNano33IoT_example_support

From 35105ff9952c90aa1a97f17a508b43549dff07a6 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 26 May 2021 13:08:27 +0500
Subject: [PATCH 33/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index c2004c6..35aded4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@
 language: generic
 env:
   global:
-    - IDE_VERSION=1.8.11
+    - IDE_VERSION=1.6.11
   branches:
     only:
     - ArduinoNano33IoT_example_support

From d9d8f92b2699499292a830739a33e0f10a8055c5 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Wed, 26 May 2021 13:13:38 +0500
Subject: [PATCH 34/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 35aded4..36f8627 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@
 language: generic
 env:
   global:
-    - IDE_VERSION=1.6.11
+    - IDE_VERSION=1.8.10
   branches:
     only:
     - ArduinoNano33IoT_example_support

From 4673429381e1cb577b942257396de7ae9586eca2 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 10:53:03 +0500
Subject: [PATCH 35/44] modified .travis.yml file for nano33iot board

---
 .gitignore                                 |   5 +++
 .pio/build/nano_33_iot/.sconsign38.dblite  | Bin 4534 -> 0 bytes
 .pio/build/nano_33_iot/src/certs/certs.c.o | Bin 5072 -> 0 bytes
 .pio/build/project.checksum                |   2 +-
 .travis.yml                                |  36 ++++++++++++---------
 .vscode/extensions.json                    |   7 ++++
 platformio.ini                             |   2 +-
 7 files changed, 34 insertions(+), 18 deletions(-)
 create mode 100644 .gitignore
 delete mode 100644 .pio/build/nano_33_iot/.sconsign38.dblite
 delete mode 100644 .pio/build/nano_33_iot/src/certs/certs.c.o
 create mode 100644 .vscode/extensions.json

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..89cc49c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
diff --git a/.pio/build/nano_33_iot/.sconsign38.dblite b/.pio/build/nano_33_iot/.sconsign38.dblite
deleted file mode 100644
index 424b10fabcc17d4ec04d5128f39658bde3299ee6..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/.pio/build/nano_33_iot/src/certs/certs.c.o b/.pio/build/nano_33_iot/src/certs/certs.c.o
deleted file mode 100644
index c0310ddaa8a3f2822a14b307e918b8cd4989188e..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/.pio/build/project.checksum b/.pio/build/project.checksum
index 4b4c6b8..fa7d2a1 100644
--- a/.pio/build/project.checksum
+++ b/.pio/build/project.checksum
@@ -1 +1 @@
-7730d7177f85c99afaf4bec37fc866b3c035c276
\ No newline at end of file
+c6791a4fbf98852daca2023ec98649d785fdba3c
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 36f8627..10de61c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,12 +4,11 @@
 language: generic
 env:
   global:
-    - IDE_VERSION=1.8.10
-  branches:
-    only:
-    - ArduinoNano33IoT_example_support
+    - IDE_VERSION=1.6.11
   matrix:
     - BOARD="arduino:samd:nano_33_iot"
+    - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
+    - BOARD="esp8266:esp8266:thing"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3
@@ -18,31 +17,36 @@ before_install:
   - tar xf arduino-$IDE_VERSION-linux64.tar.xz
   - mv arduino-$IDE_VERSION $HOME/arduino-ide
   - export PATH=$PATH:$HOME/arduino-ide
+  - if [[ "$BOARD" =~ "arduino:samd:" ]]; then
+      arduino --install-boards arduino:samd;
+      arduino --install-library WiFi101;
+      arduino --install-library WiFi101;
+      arduino --install-library RTCZero;
+      arduino --install-library NTPClient;
+    fi
   - if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
       arduino --pref "boardsmanager.additional.urls=http://arduino.esp8266.com/stable/package_esp8266com_index.json" --install-boards esp8266:esp8266;
       arduino --pref "boardsmanager.additional.urls=" --save-prefs;
       arduino --install-library NTPClient;
-    fi
-  - if [[ "$BOARD" =~ "esp32:esp32:" ]]; then
-      arduino --pref "boardsmanager.additional.urls=https://dl.espressif.com/dl/package_esp32_index.json" --install-boards esp32:esp32;
-      arduino --pref "boardsmanager.additional.urls=" --save-prefs;
       arduino --install-library NTPClient;
     fi
-  - if [[ "$BOARD" =~ "arduino:samd:" ]]; then 
-      arduino --install-boards arduino:samd; 
-      arduino --install-library WiFiNINA;
-    fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
-      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino;
+      EXAMPLE_SKETCH=$PWD/examples/$1/$1.ino;
+
+      if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
+        findAndReplace WiFi101 ESP8266WiFi $EXAMPLE_SKETCH;
+        findAndReplace WiFiSSLClient WiFiClientSecure $EXAMPLE_SKETCH;
+        findAndReplace WiFiUdp WiFiUdp $EXAMPLE_SKETCH; 
+      fi
+
+      cat $EXAMPLE_SKETCH;
 
       arduino --verbose-build --verify --board $BOARD $EXAMPLE_SKETCH;
     }
 install:
   - arduino --install-library "AzureIoTUtility"
-  - arduino --install-library "AzureIoTProtocol_MQTT"
   - arduino --install-library "AzureIoTProtocol_HTTP"
-  - arduino --install-library "AzureIoTHub"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch $PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample;
+  - buildExampleSketch simplesample_http
\ No newline at end of file
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..e80666b
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,7 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ]
+}
diff --git a/platformio.ini b/platformio.ini
index 2758a17..1160f87 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -2,4 +2,4 @@
 platform = atmelsam
 board = nano_33_iot
 framework = arduino
-build_flags = -DDONT_USE_UPLOADTOBLOB -DUSE_BALTIMORE_CERT -DUSE_MBEDTLS
\ No newline at end of file
+build_flags = -DDONT_USE_UPLOADTOBLOB -DUSE_BALTIMORE_CERT -DUSE_MBEDTLS

From 11c4b39a4ba2a7f56db93eb14817c903d74645fb Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 10:59:36 +0500
Subject: [PATCH 36/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 10de61c..10add6a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,7 +32,7 @@ before_install:
     fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
-      EXAMPLE_SKETCH=$PWD/examples/$1/$1.ino;
+      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/$1.ino;
 
       if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
         findAndReplace WiFi101 ESP8266WiFi $EXAMPLE_SKETCH;

From 52f050764a272fca7b47912318cbb1197e756fef Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:10:26 +0500
Subject: [PATCH 37/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 10add6a..1ee073f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,7 +32,7 @@ before_install:
     fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
-      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/$1.ino;
+      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample.ino;
 
       if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
         findAndReplace WiFi101 ESP8266WiFi $EXAMPLE_SKETCH;

From 742d4318dc67f19003a9b50e10337369ed38ba89 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:30:39 +0500
Subject: [PATCH 38/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 1ee073f..a713adb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,4 +49,4 @@ install:
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
-  - buildExampleSketch simplesample_http
\ No newline at end of file
+  - buildExampleSketch iothub_ll_telemetry_sample
\ No newline at end of file

From 63e92273f392c3e75c2f329e26b94b73beaa3d86 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:35:00 +0500
Subject: [PATCH 39/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index a713adb..6367713 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,7 +32,7 @@ before_install:
     fi
   - findAndReplace() { sed -i'' -e"s|$1|$2|g" "$3"; }
   - buildExampleSketch() {
-      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample.ino;
+      EXAMPLE_SKETCH=$PWD/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iothub_ll_telemetry_sample.ino;
 
       if [[ "$BOARD" =~ "esp8266:esp8266:" ]]; then
         findAndReplace WiFi101 ESP8266WiFi $EXAMPLE_SKETCH;

From 2a9613bc6d1b1e793fea920be049b9dce3c050d5 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:40:55 +0500
Subject: [PATCH 40/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 6367713..21eccec 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -47,6 +47,7 @@ before_install:
 install:
   - arduino --install-library "AzureIoTUtility"
   - arduino --install-library "AzureIoTProtocol_HTTP"
+  - arduino --install-library "AzureIoTProtocol_MQTT"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
   - buildExampleSketch iothub_ll_telemetry_sample
\ No newline at end of file

From e7f0a263cd983d5ffe0054e85c18f923b2f215b9 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:48:58 +0500
Subject: [PATCH 41/44] modified iot_config file for nano33iot board

---
 .../iothub_ll_telemetry_sample/iot_configs.h                | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
index 36c6496..cea4b62 100644
--- a/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
+++ b/examples/ArduinoNano33iot/iothub_ll_telemetry_sample/iot_configs.h
@@ -7,8 +7,8 @@
 /**
  * WiFi setup
  */
-#define IOT_CONFIG_WIFI_SSID            ""
-#define IOT_CONFIG_WIFI_PASSWORD        ""
+#define IOT_CONFIG_WIFI_SSID            "InfoNet-BB"
+#define IOT_CONFIG_WIFI_PASSWORD        "pakistan313"
 
 /**
  * IoT Hub Device Connection String setup
@@ -16,7 +16,7 @@
  * navigating to IoT Devices tab on the left, and creating (or selecting an existing) IoT Device. 
  * Then click on the named Device ID, and you will have able to copy the Primary or Secondary Device Connection String to this sample.
  */
-#define DEVICE_CONNECTION_STRING    ""
+#define DEVICE_CONNECTION_STRING    "HostName=ArduinoNano33IoT.azure-devices.net;DeviceId=ArduinoNano33IoTDevice;SharedAccessKey=0XrwEGjbnYkbIglMadXZ/+SOIXHrn5eVxn7EoCIBqPM="
 
 // The protocol you wish to use should be uncommented
 //

From 50fba2ce6947222e47a2bf164453e09f1afbca4a Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 11:58:52 +0500
Subject: [PATCH 42/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 21eccec..dab134e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,6 @@ env:
     - IDE_VERSION=1.6.11
   matrix:
     - BOARD="arduino:samd:nano_33_iot"
-    - BOARD="esp8266:esp8266:huzzah:FlashSize=4M3M,CpuFrequency=80"
-    - BOARD="esp8266:esp8266:thing"
 before_install:
   - /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
   - sleep 3
@@ -48,6 +46,7 @@ install:
   - arduino --install-library "AzureIoTUtility"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - arduino --install-library "AzureIoTProtocol_MQTT"
+  - arduino --install-library "AzureIoTHub"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
   - buildExampleSketch iothub_ll_telemetry_sample
\ No newline at end of file

From dc78b575e3390506bb942eaaac67b8f2f046bc59 Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 13:09:45 +0500
Subject: [PATCH 43/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index dab134e..374dc45 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,10 +43,10 @@ before_install:
       arduino --verbose-build --verify --board $BOARD $EXAMPLE_SKETCH;
     }
 install:
+  - arduino --install-library "AzureIoTHub"
   - arduino --install-library "AzureIoTUtility"
   - arduino --install-library "AzureIoTProtocol_HTTP"
   - arduino --install-library "AzureIoTProtocol_MQTT"
-  - arduino --install-library "AzureIoTHub"
   - ln -s $PWD $HOME/Arduino/libraries/.
 script:
   - buildExampleSketch iothub_ll_telemetry_sample
\ No newline at end of file

From 6affc5ff3a5cbec778b830b2d6ba87ed0b0bf83f Mon Sep 17 00:00:00 2001
From: Khawaja Usman Riaz Sehgal <usman.riaz@emumba.com>
Date: Thu, 27 May 2021 14:53:47 +0500
Subject: [PATCH 44/44] modified .travis.yml file for nano33iot board

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 374dc45..61966d4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ before_install:
   - export PATH=$PATH:$HOME/arduino-ide
   - if [[ "$BOARD" =~ "arduino:samd:" ]]; then
       arduino --install-boards arduino:samd;
-      arduino --install-library WiFi101;
+      arduino --install-library WiFiNINA;
       arduino --install-library WiFi101;
       arduino --install-library RTCZero;
       arduino --install-library NTPClient;