Merge branch 'master' into feature/ledc-channel-selection

Author: P-R-O-C-H-Y

Diff for: cores/esp32/USBCDC.cpp

@@ -79,7 +79,7 @@ void tud_cdc_tx_complete_cb(uint8_t itf){
 
 static void ARDUINO_ISR_ATTR cdc0_write_char(char c){
     if(devices[0] != NULL){
-        devices[0]->write(c);
+        tud_cdc_n_write_char(0, c);
     }
 }
 

Diff for: cores/esp32/WString.cpp

@@ -677,7 +677,10 @@ int String::lastIndexOf(char ch, unsigned int fromIndex) const {
     wbuffer()[fromIndex + 1] = tempchar;
     if(temp == NULL)
         return -1;
-    return temp - buffer();
+    const int rv = temp - buffer();
+    if(rv >= len())
+        return -1;
+    return rv;
 }
 
 int String::lastIndexOf(const String &s2) const {

Diff for: libraries/ESP32/examples/Serial/RS485_Echo_Demo/RS485_Echo_Demo.ino

@@ -0,0 +1,48 @@
+/*
+  This Sketch demonstrates how to use the Hardware Serial peripheral to communicate over an RS485 bus. 
+
+  Data received on the primary serial port is relayed to the bus acting as an RS485 interface and vice versa.
+
+  UART to RS485 translation hardware (e.g., MAX485, MAX33046E, ADM483) is assumed to be configured in half-duplex
+  mode with collision detection as described in
+  https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/uart.html#circuit-a-collision-detection-circuit
+
+  To use the script open the Arduino serial monitor (or alternative serial monitor on the Arduino port). Then,
+  using an RS485 tranciver, connect another serial monitor to the RS485 port. Entering data on one terminal
+  should be displayed on the other terminal.
+*/
+#include "hal/uart_types.h"
+
+#define RS485_RX_PIN 16
+#define RS485_TX_PIN 5
+#define RS485_RTS_PIN 4
+
+#define RS485 Serial1
+
+void setup() {
+  Serial.begin(115200);
+  while(!Serial) { delay(10); }
+
+  RS485.begin(9600, SERIAL_8N1, RS485_RX_PIN, RS485_TX_PIN);
+  while(!RS485) { delay(10); }
+  if(!RS485.setPins(-1, -1, -1, RS485_RTS_PIN)){
+    Serial.print("Failed to set RS485 pins");
+  }
+
+  // Certain versions of Arduino core don't define MODE_RS485_HALF_DUPLEX and so fail to compile.
+  // By using UART_MODE_RS485_HALF_DUPLEX defined in hal/uart_types.h we work around this problem.
+  // If using a newer IDF and Arduino core you can ommit including hal/uart_types.h and use MODE_RS485_HALF_DUPLEX
+  // defined in esp32-hal-uart.h (included during other build steps) instead.
+  if(!RS485.setMode(UART_MODE_RS485_HALF_DUPLEX)) {
+   Serial.print("Failed to set RS485 mode");
+  }
+}
+
+void loop() {
+  if (RS485.available()) {
+    Serial.write(RS485.read());
+  }
+  if (Serial.available()) {
+    RS485.write(Serial.read());
+  }
+}

Diff for: libraries/WiFi/src/WiFiSTA.cpp

@@ -373,7 +373,6 @@ bool WiFiSTAClass::disconnect(bool wifioff, bool eraseap)
     wifi_sta_config(&conf);
 
     if(WiFi.getMode() & WIFI_MODE_STA){
-        _useStaticIp = false;
         if(eraseap){
             if(esp_wifi_set_config((wifi_interface_t)ESP_IF_WIFI_STA, &conf)){
                 log_e("clear config failed!");

Diff for: libraries/WiFi/src/WiFiServer.h

@@ -45,7 +45,7 @@ class WiFiServer : public Server {
       log_v("WiFiServer::WiFiServer(addr=%s, port=%d, ...)", addr.toString().c_str(), port);
     }
     ~WiFiServer(){ end();}
-    WiFiClient available() __attribute__((deprecated("Renamed to accept().")));
+    WiFiClient available();
     WiFiClient accept();
     void begin(uint16_t port=0);
     void begin(uint16_t port, int reuse_enable);

Diff for: variants/adafruit_camera_esp32s3/bootloader-tinyuf2.bin

@@ -24,18 +24,18 @@ static const uint8_t LED_BUILTIN = PIN_NEOPIXEL+SOC_GPIO_PIN_COUNT;
 #define RGB_BRIGHTNESS 64
 
 
-//static const uint8_t TFT_BACKLIGHT = 41;
+static const uint8_t TFT_BACKLIGHT = 45;
 static const uint8_t TFT_DC        = 40;
 static const uint8_t TFT_CS        = 39;
 static const uint8_t TFT_RESET     = 38;
 static const uint8_t TFT_RST       = 38;
 
 static const uint8_t SD_CS          = 48;
 static const uint8_t SD_CHIP_SELECT = 48;
-static const uint8_t SPEAKER        = 41;
+static const uint8_t SPEAKER        = 46;
 
-static const uint8_t SDA = 33;
-static const uint8_t SCL = 34;
+static const uint8_t SCL = 33;
+static const uint8_t SDA = 34;
 
 static const uint8_t SS    = 48;
 static const uint8_t MOSI  = 35;
@@ -55,19 +55,16 @@ static const uint8_t DAC2 = 18;
 
 #define AWEXP_SPKR_SD 0
 #define AWEXP_BUTTON_SEL 1
-#define AWEXP_BACKLIGHT 2
-#define AWEXP_CAM_PWDN 7
 #define AWEXP_SD_DET 8
 #define AWEXP_SD_PWR 9
-#define AWEXP_CAM_RST 10
 #define AWEXP_BUTTON_OK 11
 #define AWEXP_BUTTON_RIGHT 12
 #define AWEXP_BUTTON_UP 13
 #define AWEXP_BUTTON_LEFT 14
 #define AWEXP_BUTTON_DOWN 15
 
-#define PWDN_GPIO_NUM     -1 // connected through expander
-#define RESET_GPIO_NUM    -1 // connected through expander
+#define RESET_GPIO_NUM    47
+#define PWDN_GPIO_NUM     21
 #define XCLK_GPIO_NUM      8
 #define SIOD_GPIO_NUM     SDA
 #define SIOC_GPIO_NUM     SCL

Diff for: variants/adafruit_camera_esp32s3/pins_arduino.h

@@ -31,6 +31,15 @@ extern "C" {
 // Initialize variant/board, called before setup()
 void initVariant(void)
 {
-
+  pinMode(TFT_BACKLIGHT, OUTPUT);
+  digitalWrite(TFT_BACKLIGHT, LOW);
+  pinMode(SD_CS, OUTPUT);
+  digitalWrite(SD_CS, HIGH);
+  pinMode(TFT_CS, OUTPUT);
+  digitalWrite(TFT_CS, HIGH);
+  pinMode(TFT_RESET, OUTPUT);
+  digitalWrite(TFT_RESET, LOW);
+  delay(1);
+  digitalWrite(TFT_RESET, HIGH);
 }
 }

Diff for: variants/adafruit_camera_esp32s3/tinyuf2.bin

@@ -14,7 +14,7 @@
 #define BUILTIN_LED  LED_BUILTIN // backward compatibility
 
 // Neopixel
-#define PIN_NEOPIXEL    45
+#define PIN_NEOPIXEL    46
 // RGB_BUILTIN and RGB_BRIGHTNESS can be used in new Arduino API neopixelWrite() and digitalWrite() for blinking
 #define RGB_BUILTIN (PIN_NEOPIXEL+SOC_GPIO_PIN_COUNT)
 #define RGB_BRIGHTNESS 64

Diff for: variants/adafruit_camera_esp32s3/variant.cpp

@@ -30,7 +30,8 @@ extern "C" {
 
 // Initialize variant/board, called before setup()
 void initVariant(void) {
-  // default SD_CS to input pullup
+  // default SD_CS to input pullup (we cannot have built in pullup since its
+  // a strapping pin!)
   pinMode(SS, INPUT_PULLUP);
 }