fix(ledc): Allow setting AnalogWrite freq and res before ledc init

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

cores/esp32/esp32-hal-ledc.c

@@ -784,17 +784,23 @@ void analogWrite(uint8_t pin, int value) {
 }
 
 void analogWriteFrequency(uint8_t pin, uint32_t freq) {
-  if (ledcChangeFrequency(pin, freq, analog_resolution) == 0) {
-    log_e("analogWrite frequency cant be set due to selected resolution! Try to adjust resolution first");
-    return;
+  ledc_channel_handle_t *bus = (ledc_channel_handle_t *)perimanGetPinBus(pin, ESP32_BUS_TYPE_LEDC);
+  if (bus != NULL) { // if pin is attached to LEDC change frequency. otherwise update the global frequency
+    if (ledcChangeFrequency(pin, freq, analog_resolution) == 0) {
+      log_e("analogWrite frequency cant be set due to selected resolution! Try to adjust resolution first");
+      return;
+    }
   }
   analog_frequency = freq;
 }
 
 void analogWriteResolution(uint8_t pin, uint8_t resolution) {
-  if (ledcChangeFrequency(pin, analog_frequency, resolution) == 0) {
-    log_e("analogWrite resolution cant be set due to selected frequency! Try to adjust frequency first");
-    return;
+  ledc_channel_handle_t *bus = (ledc_channel_handle_t *)perimanGetPinBus(pin, ESP32_BUS_TYPE_LEDC);
+  if (bus != NULL) { // if pin is attached to LEDC change resolution. otherwise update the global resolution
+    if (ledcChangeFrequency(pin, analog_frequency, resolution) == 0) {
+      log_e("analogWrite resolution cant be set due to selected frequency! Try to adjust frequency first");
+      return;
+    }
   }
   analog_resolution = resolution;
 }