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Proposal for example unification #16

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Apr 18, 2016
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Proposal for example unification #16

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c35cbeb
Have a single set of examples, introduce AzureIoTHubClient class, use…
sandeepmistry Apr 13, 2016
43c3183
Move Serial.setDebugOutput to example sketch (with comment)
sandeepmistry Apr 14, 2016
b52ef5a
Update samples to use internal ESP NTP mechanism (configTime)
obsoleted Apr 15, 2016
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0 examples/samd/README.md → examples/README.md
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225 changes: 125 additions & 100 deletions ...es/samd/command_center/command_center.ino → examples/command_center/command_center.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -4,101 +4,63 @@
// This example code shows how to use an Adafruit Feather M0 module and Microsoft Azure for IoT
// applications.

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <time.h>
#include <sys/time.h>
#include <SPI.h>
#ifdef ARDUINO_SAMD_FEATHER_M0
// change the next three lines to use on non-Adafruit WINC1500 based boards/shields
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What do you think about leaving in/combining the #ifdef logic? That way the sample can work as is for all known boards without having to manually edit the includes?

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Using C macros is something we should avoid. It's not "Arduino" style. The Arduino Style Guide for Writing Libraries is a good read, most of the Arduino user base is not familiar with them.

Also, once arduino-libraries/WiFi101#57 is resolved by something like arduino-libraries/WiFi101#58 we can simplify these quite a bit.

#include <Adafruit_WINC1500.h>
#include <Adafruit_WINC1500Client.h>
#include <Adafruit_WINC1500MDNS.h>
#include <Adafruit_WINC1500Server.h>
#include <Adafruit_WINC1500SSLClient.h>
#include <Adafruit_WINC1500Udp.h>
#elif defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000)
#include <WiFi101.h>
#endif
#include <Adafruit_Sensor.h>

// for WiFi101
//#include <WiFi101.h>
//#include <WiFiSSLClient.h>
//#include <WiFiUdp.h>

// for ESP8266
//#include <ESP8266WiFi.h>
//#include <WiFiClientSecure.h>
//#include <WiFiUdp.h>

#include <Adafruit_BME280.h>
#include "rem_ctrl_http.h"
#include "NTPClient.h"
#include <NTPClient.h>
#include <AzureIoTHub.h>

#include "rem_ctrl_http.h"

#ifdef ARDUINO_SAMD_FEATHER_M0
// for the Adafruit WINC1500 we need to create our own WiFi instance
// Define the WINC1500 board connections below.
#define WINC_CS 8
#define WINC_IRQ 7
#define WINC_RST 4
#define WINC_EN 2

#define WINC_EN 2 // or, tie EN to VCC
// Setup the WINC1500 connection with the pins above and the default hardware SPI.
Adafruit_WINC1500 WiFi(WINC_CS, WINC_IRQ, WINC_RST);
#endif


static const char ssid[] = "[Your WiFi network SSID or name]";
static const char pass[] = "[Your WiFi network WPA password or WEP key]";
static const char* connectionString = "[Device Connection String]";

// The connection string is the one which begins with HostName=... and contains the DeviceId
// and SharedAccessKey for this particular Thing on the Internet.
static const char* connectionString = "[Device Connection String]";

int status = WL_IDLE_STATUS;
// change the next line to use on non-Adafruit WINC1500 based boards/shields
Adafruit_WINC1500SSLClient sslClient; // for Adafruit WINC150
//WiFiSSLClient sslClient; // for WiFi101
//WiFiClientSecure sslClient; // for ESP8266

AzureIoTHubClient iotHubClient(sslClient);

#define SEALEVELPRESSURE_HPA (1013.25)
const int Bme280_cs_pin__i = 5;
bool Bme_init_result = false;
Adafruit_BME280 bme(Bme280_cs_pin__i);
void initTime();


void setup() {
// The Feather M0 loses it's COMn connection with every reset.
// This 10 s delay allows you to reselect the COM port and open the serial monitor window.
delay(10000);

Serial.begin(9600);
Serial.println("Azure_remote_monitoring Sketch.");
#ifdef WINC_EN
pinMode(WINC_EN, OUTPUT);
digitalWrite(WINC_EN, HIGH);
#endif
initSerial();

Serial.println("Checking for the presence of the BME280 temp/humid/press module.");
Bme_init_result = bme.begin();
if (Bme_init_result)
{
Serial.println("Found and initialized BME280 module.");
}
else
{
Serial.println("Warning! BME280 module not found.");
}

Serial.println("Checking for the presence of the WiFi module.");
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("Warning! WiFi shield not found.");
}
else
{
Serial.println("WiFi module found.");
}
Serial.println("Azure_remote_monitoring Sketch.");

Serial.println("Attempting to connect to Wifi network.");
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);

if (status != WL_CONNECTED) {
// wait 10 seconds for connection:
delay(10000);
}
}
Serial.println("Connected to wifi");
initWifi();
initTime();
initBME();

if (rem_ctrl_set_connection_string(connectionString)) {
Serial.print("Connection string successfully set to \"");
Expand All @@ -115,7 +77,7 @@ void setup() {
Serial.println("Unable to initialize the Azure connection. Halting.");
}

initTime();
iotHubClient.begin();
}

///////////////////////////////////////////////////////////////////////////////////////////////////
Expand All @@ -141,7 +103,7 @@ void loop() {

Sensor_read_next_ms__u32 = Curr_time_ms__u32 + Sensor_read_period_ms__u32;
}

if (IS_TASK_TIME(Curr_time_ms__u32, Azure_io_update_next_ms__u32)) {
rem_ctrl_http_run();

Expand All @@ -150,38 +112,101 @@ void loop() {
}

///////////////////////////////////////////////////////////////////////////////////////////////////
void initSerial() {
//Initialize serial and wait for port to open:
// For SAMD boards (e.g. MKR1000, Adafruit WINC1500 based)
Serial.begin(9600);

// Uncomment the next two lines For ESP8266 boards (and comment out the line above)
// Serial.begin(115200);
// Serial.setDebugOutput(true);

while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
}

void initWifi() {
// for the Adafruit WINC1500 we need to enable the chip
pinMode(WINC_EN, OUTPUT);
digitalWrite(WINC_EN, HIGH);

// check for the presence of the shield :
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}

// attempt to connect to Wifi network:
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);

// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
while (WiFi.begin(ssid, pass) != WL_CONNECTED) {
// unsuccessful, retry in 4 seconds
Serial.print("failed ... ");
delay(4000);
Serial.print("retrying ... ");
}

Serial.println("Connected to wifi");
}

void initTime() {
#ifdef ARDUINO_SAMD_FEATHER_M0
Adafruit_WINC1500UDP _udp;
#elif defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_SAMD_MKR1000)
WiFiUDP _udp;
#endif

time_t epochTime = (time_t)-1;

NTPClient ntpClient;
ntpClient.begin();

while (true) {
epochTime = ntpClient.getEpochTime("0.pool.ntp.org");

if (epochTime == (time_t)-1) {
Serial.println("Fetching NTP epoch time failed! Waiting 5 seconds to retry.");
delay(5000);
} else {
Serial.print("Fetched NTP epoch time is: ");
Serial.println(epochTime);
break;
}
}

ntpClient.end();

struct timeval tv;
tv.tv_sec = epochTime;
tv.tv_usec = 0;

settimeofday(&tv, NULL);
// change the next line to use on non-WINC1500 based boards/shields
Adafruit_WINC1500UDP ntpUdp; // for Adafruit WINC1500
// WiFiUDP ntpUdp; // for WiFi101
// for ESP8266 boards see comment below
NTPClient ntpClient(ntpUdp);

ntpClient.begin();

while (!ntpClient.update()) {
Serial.println("Fetching NTP epoch time failed! Waiting 5 seconds to retry.");
delay(5000);
}

ntpClient.end();

unsigned long epochTime = ntpClient.getEpochTime();

Serial.print("Fetched NTP epoch time is: ");
Serial.println(epochTime);

iotHubClient.setEpochTime(epochTime);

// For ESP8266 boards comment out the above portion of the function and un-comment
// the remainder below.

// time_t epochTime;

// configTime(0, 0, "pool.ntp.org", "time.nist.gov");

// while (true) {
// epochTime = time(NULL);

// if (epochTime == 0) {
// Serial.println("Fetching NTP epoch time failed! Waiting 2 seconds to retry.");
// delay(2000);
// } else {
// Serial.print("Fetched NTP epoch time is: ");
// Serial.println(epochTime);
// break;
// }
// }
}

void initBME() {
Serial.println("Checking for the presence of the BME280 temp/humid/press module.");
Bme_init_result = bme.begin();
if (Bme_init_result)
{
Serial.println("Found and initialized BME280 module.");
}
else
{
Serial.println("Warning! BME280 module not found.");
}
}

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