Changed type of LEDC frequency from double to uint32_t (espressif#6570)

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

cores/esp32/esp32-hal-ledc.c

@@ -54,7 +54,7 @@
 
 uint8_t channels_resolution[LEDC_CHANNELS] = {0};
 
-double ledcSetup(uint8_t chan, double freq, uint8_t bit_num)
+uint32_t ledcSetup(uint8_t chan, uint32_t freq, uint8_t bit_num)
 {
  if(chan >= LEDC_CHANNELS || bit_num > LEDC_MAX_BIT_WIDTH){
  log_e("No more LEDC channels available! (maximum %u) or bit width too big (maximum %u)", LEDC_CHANNELS, LEDC_MAX_BIT_WIDTH);
@@ -106,7 +106,7 @@ uint32_t ledcRead(uint8_t chan)
  return ledc_get_duty(group,channel);
 }
 
-double ledcReadFreq(uint8_t chan)
+uint32_t ledcReadFreq(uint8_t chan)
 {
  if(!ledcRead(chan)){
  return 0;
@@ -115,7 +115,7 @@ double ledcReadFreq(uint8_t chan)
  return ledc_get_freq(group,timer);
 }
 
-double ledcWriteTone(uint8_t chan, double freq)
+uint32_t ledcWriteTone(uint8_t chan, uint32_t freq)
 {
  if(chan >= LEDC_CHANNELS){
  return 0;
@@ -142,12 +142,12 @@ double ledcWriteTone(uint8_t chan, double freq)
  }
  channels_resolution[chan] = 10;
 
- double res_freq = ledc_get_freq(group,timer);
+ uint32_t res_freq = ledc_get_freq(group,timer);
  ledcWrite(chan, 0x1FF);
  return res_freq;
 }
 
-double ledcWriteNote(uint8_t chan, note_t note, uint8_t octave){
+uint32_t ledcWriteNote(uint8_t chan, note_t note, uint8_t octave){
  const uint16_t noteFrequencyBase[12] = {
  // C C# D Eb E F F# G G# A Bb B
  4186, 4435, 4699, 4978, 5274, 5588, 5920, 6272, 6645, 7040, 7459, 7902
@@ -156,7 +156,7 @@ double ledcWriteNote(uint8_t chan, note_t note, uint8_t octave){
  if(octave > 8 || note >= NOTE_MAX){
  return 0;
  }
- double noteFreq = (double)noteFrequencyBase[note] / (double)(1 << (8-octave));
+ uint32_t noteFreq = (uint32_t)noteFrequencyBase[note] / (uint32_t)(1 << (8-octave));
  return ledcWriteTone(chan, noteFreq);
 }
 
@@ -184,7 +184,7 @@ void ledcDetachPin(uint8_t pin)
  pinMatrixOutDetach(pin, false, false);
 }
 
-double ledcChangeFrequency(uint8_t chan, double freq, uint8_t bit_num)
+uint32_t ledcChangeFrequency(uint8_t chan, uint32_t freq, uint8_t bit_num)
 {
  if(chan >= LEDC_CHANNELS || bit_num > LEDC_MAX_BIT_WIDTH){
  log_e("LEDC channel not available! (maximum %u) or bit width too big (maximum %u)", LEDC_CHANNELS, LEDC_MAX_BIT_WIDTH);

cores/esp32/esp32-hal-ledc.h

@@ -27,15 +27,15 @@ typedef enum {
 } note_t;
 
 //channel 0-15 resolution 1-16bits freq limits depend on resolution
-double  ledcSetup(uint8_t channel, double freq, uint8_t resolution_bits);
+uint32_t ledcSetup(uint8_t channel, uint32_t freq, uint8_t resolution_bits);
 void ledcWrite(uint8_t channel, uint32_t duty);
-double  ledcWriteTone(uint8_t channel, double freq);
-double  ledcWriteNote(uint8_t channel, note_t note, uint8_t octave);
+uint32_t ledcWriteTone(uint8_t channel, uint32_t freq);
+uint32_t ledcWriteNote(uint8_t channel, note_t note, uint8_t octave);
 uint32_t ledcRead(uint8_t channel);
-double  ledcReadFreq(uint8_t channel);
+uint32_t ledcReadFreq(uint8_t channel);
 void ledcAttachPin(uint8_t pin, uint8_t channel);
 void ledcDetachPin(uint8_t pin);
-double  ledcChangeFrequency(uint8_t channel, double freq, uint8_t resolution_bits);
+uint32_t ledcChangeFrequency(uint8_t channel, uint32_t freq, uint8_t resolution_bits);
 
 
 #ifdef __cplusplus