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;
 }