Initial Esp32c3 Support (#5060)

libraries/ESP32/examples/AnalogOut/ledcWrite_RGB/ledcWrite_RGB.ino

@@ -9,9 +9,9 @@
  */
  
 // Set up the rgb led names
-uint8_t ledR = A4;
-uint8_t ledG = A5;
-uint8_t ledB = A18; 
+uint8_t ledR = 2;
+uint8_t ledG = 4;
+uint8_t ledB = 5; 
 
 uint8_t ledArray[3] = {1, 2, 3}; // three led channels
 

libraries/ESP32/examples/ResetReason/ResetReason.ino

@@ -17,6 +17,8 @@
 #include "esp32/rom/rtc.h"
 #elif CONFIG_IDF_TARGET_ESP32S2
 #include "esp32s2/rom/rtc.h"
+#elif CONFIG_IDF_TARGET_ESP32C3
+#include "esp32c3/rom/rtc.h"
 #else 
 #error Target CONFIG_IDF_TARGET is not supported
 #endif

libraries/SD/src/sd_diskio.cpp

@@ -124,6 +124,8 @@ bool sdSelectCard(uint8_t pdrv)
     bool s = sdWait(pdrv, 300);
     if (!s) {
         log_e("Select Failed");
+        digitalWrite(card->ssPin, HIGH);
+        return false;
     }
     return true;
 }

libraries/SD_MMC/src/SD_MMC.cpp

@@ -13,7 +13,7 @@
 // limitations under the License.
 
 #include "SD_MMC.h"
-#ifndef CONFIG_IDF_TARGET_ESP32S2 //SDMMC does not work on ESP32S2
+#if !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32C3) //SDMMC does not work on ESP32S2
 #include "vfs_api.h"
 
 extern "C" {

libraries/SPI/src/SPI.cpp

@@ -55,6 +55,11 @@ void SPIClass::begin(int8_t sck, int8_t miso, int8_t mosi, int8_t ss)
         _miso = (_spi_num == FSPI) ? MISO : -1;
         _mosi = (_spi_num == FSPI) ? MOSI : -1;
         _ss = (_spi_num == FSPI) ? SS : -1;
+#elif CONFIG_IDF_TARGET_ESP32C3
+        _sck = SCK;
+        _miso = MISO;
+        _mosi = MOSI;
+        _ss = SS;
 #else
         _sck = (_spi_num == VSPI) ? SCK : 14;
         _miso = (_spi_num == VSPI) ? MISO : 12;

libraries/WiFi/src/WiFiClient.cpp

@@ -321,7 +321,7 @@ int WiFiClient::setOption(int option, int *value)
 
 int WiFiClient::getOption(int option, int *value)
 {
-    size_t size = sizeof(int);
+	socklen_t size = sizeof(int);
     int res = getsockopt(fd(), IPPROTO_TCP, option, (char *)value, &size);
     if(res < 0) {
         log_e("fail on fd %d, errno: %d, \"%s\"", fd(), errno, strerror(errno));

libraries/WiFiProv/src/WiFiProv.cpp

@@ -41,7 +41,7 @@
 
 bool wifiLowLevelInit(bool persistent);
 
-#if CONFIG_IDF_TARGET_ESP32
+#if CONFIG_BLUEDROID_ENABLED
 static const uint8_t custom_service_uuid[16] = {  0xb4, 0xdf, 0x5a, 0x1c, 0x3f, 0x6b, 0xf4, 0xbf,
                                                   0xea, 0x4a, 0x82, 0x03, 0x04, 0x90, 0x1a, 0x02, };
 #endif