Merge pull request #169 from brentru/fix-for-esp32-backwards-compat

Add backwards compatibility with ESP32 BSP's stable release

examples/adafruitio_09_analog_out/adafruitio_09_analog_out.ino

@@ -30,7 +30,14 @@ void setup() {
 
   // set up led pin as an analog output
   #if defined(ARDUINO_ARCH_ESP32)
-    ledcAttach(LED_PIN, 12000, 8); // 12 kHz PWM, 8-bit resolution
+    #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 1, 1)
+      // New ESP32 LEDC API
+      ledcAttach(LED_PIN, 12000, 8); // 12 kHz PWM, 8-bit resolution
+    #else
+      // Legacy ESP32 LEDC API
+      ledcAttachPin(LED_PIN, 1);
+      ledcSetup(1, 1200, 8);
+    #endif
   #else
     pinMode(LED_PIN, OUTPUT);
   #endif

examples/adafruitio_13_rgb/adafruitio_13_rgb.ino

@@ -39,9 +39,20 @@ void setup() {
 
 
   #if defined(ARDUINO_ARCH_ESP32) // ESP32 pinMode
-    ledcAttach(RED_PIN, 12000, 8); // 12 kHz PWM, 8-bit resolution
-    ledcAttach(GREEN_PIN, 12000, 8);
-    ledcAttach(BLUE_PIN, 12000, 8);
+    #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 1, 1)
+      // New ESP32 LEDC API
+      ledcAttach(RED_PIN, 12000, 8); // 12 kHz PWM, 8-bit resolution
+      ledcAttach(GREEN_PIN, 12000, 8);
+      ledcAttach(BLUE_PIN, 12000, 8);
+    #else
+     // Legacy ESP32 LEDC API
+      ledcAttachPin(RED_PIN, 1);
+      ledcAttachPin(GREEN_PIN, 2);
+      ledcAttachPin(BLUE_PIN, 3);
+      ledcSetup(1, 12000, 8);
+      ledcSetup(2, 12000, 8);
+      ledcSetup(3, 12000, 8);
+    #endif
   #else
     pinMode(RED_PIN, OUTPUT);
     pinMode(GREEN_PIN, OUTPUT);

library.properties

@@ -1,5 +1,5 @@
 name=Adafruit IO Arduino
-version=4.2.8
+version=4.2.9
 author=Adafruit
 maintainer=Adafruit <[email protected]>
 sentence=Arduino library to access Adafruit IO.