forked from espressif/arduino-esp32
Initial Commit
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@ -25,6 +25,11 @@
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#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
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#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
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#include "esp32/rom/ets_sys.h"
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#define LAST_CHAN (15)
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/ets_sys.h"
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#define LAST_CHAN (7)
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#define LEDC_DIV_NUM_HSTIMER0_V LEDC_CLK_DIV_LSTIMER0_V
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#else
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#error Target CONFIG_IDF_TARGET is not supported
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#endif
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@ -119,9 +124,13 @@ static void _ledcSetupTimer(uint8_t chan, uint32_t div_num, uint8_t bit_num, boo
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LEDC_TIMER(group, timer).conf.clock_divider = div_num;//18 bit (10.8) This register is used to configure parameter for divider in timer the least significant eight bits represent the decimal part.
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LEDC_TIMER(group, timer).conf.duty_resolution = bit_num;//5 bit This register controls the range of the counter in timer. the counter range is [0 2**bit_num] the max bit width for counter is 20.
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LEDC_TIMER(group, timer).conf.tick_sel = apb_clk;//apb clock
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#if CONFIG_IDF_TARGET_ESP32
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if(group) {
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#endif
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LEDC_TIMER(group, timer).conf.low_speed_update = 1;//This bit is only useful for low speed timer channels, reserved for high speed timers
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#if CONFIG_IDF_TARGET_ESP32
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}
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#endif
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LEDC_TIMER(group, timer).conf.pause = 0;
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LEDC_TIMER(group, timer).conf.rst = 1;//This bit is used to reset timer the counter will be 0 after reset.
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LEDC_TIMER(group, timer).conf.rst = 0;
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@ -186,17 +195,21 @@ static void _ledcSetupChannel(uint8_t chan, uint8_t idle_level)
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LEDC_CHAN(group, channel).duty.duty = 0;
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LEDC_CHAN(group, channel).conf0.sig_out_en = 0;//This is the output enable control bit for channel
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LEDC_CHAN(group, channel).conf1.duty_start = 0;//When duty_num duty_cycle and duty_scale has been configured. these register won't take effect until set duty_start. this bit is automatically cleared by hardware.
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#if CONFIG_IDF_TARGET_ESP32
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if(group) {
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#endif
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LEDC_CHAN(group, channel).conf0.low_speed_update = 1;
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#if CONFIG_IDF_TARGET_ESP32
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} else {
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LEDC_CHAN(group, channel).conf0.clk_en = 0;
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}
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#endif
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LEDC_MUTEX_UNLOCK();
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}
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double ledcSetup(uint8_t chan, double freq, uint8_t bit_num)
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{
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if(chan > 15) {
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if(chan > LAST_CHAN) {
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return 0;
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}
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double res_freq = _ledcSetupTimerFreq(chan, freq, bit_num);
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@ -206,7 +219,7 @@ double ledcSetup(uint8_t chan, double freq, uint8_t bit_num)
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void ledcWrite(uint8_t chan, uint32_t duty)
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{
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if(chan > 15) {
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if(chan > LAST_CHAN) {
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return;
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}
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uint8_t group=(chan/8), channel=(chan%8);
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@ -215,26 +228,34 @@ void ledcWrite(uint8_t chan, uint32_t duty)
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if(duty) {
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LEDC_CHAN(group, channel).conf0.sig_out_en = 1;//This is the output enable control bit for channel
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LEDC_CHAN(group, channel).conf1.duty_start = 1;//When duty_num duty_cycle and duty_scale has been configured. these register won't take effect until set duty_start. this bit is automatically cleared by hardware.
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#if CONFIG_IDF_TARGET_ESP32
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if(group) {
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#endif
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LEDC_CHAN(group, channel).conf0.low_speed_update = 1;
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#if CONFIG_IDF_TARGET_ESP32
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} else {
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LEDC_CHAN(group, channel).conf0.clk_en = 1;
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}
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#endif
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} else {
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LEDC_CHAN(group, channel).conf0.sig_out_en = 0;//This is the output enable control bit for channel
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LEDC_CHAN(group, channel).conf1.duty_start = 0;//When duty_num duty_cycle and duty_scale has been configured. these register won't take effect until set duty_start. this bit is automatically cleared by hardware.
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#if CONFIG_IDF_TARGET_ESP32
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if(group) {
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#endif
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LEDC_CHAN(group, channel).conf0.low_speed_update = 1;
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#if CONFIG_IDF_TARGET_ESP32
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} else {
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LEDC_CHAN(group, channel).conf0.clk_en = 0;
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}
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#endif
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}
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LEDC_MUTEX_UNLOCK();
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}
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uint32_t ledcRead(uint8_t chan)
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{
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if(chan > 15) {
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if(chan > LAST_CHAN) {
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return 0;
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}
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return LEDC.channel_group[chan/8].channel[chan%8].duty.duty >> 4;
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@ -250,7 +271,7 @@ double ledcReadFreq(uint8_t chan)
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double ledcWriteTone(uint8_t chan, double freq)
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{
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if(chan > 15) {
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if(chan > LAST_CHAN) {
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return 0;
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}
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if(!freq) {
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@ -277,11 +298,15 @@ double ledcWriteNote(uint8_t chan, note_t note, uint8_t octave){
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void ledcAttachPin(uint8_t pin, uint8_t chan)
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{
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if(chan > 15) {
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if(chan > LAST_CHAN) {
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return;
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}
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pinMode(pin, OUTPUT);
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#if CONFIG_IDF_TARGET_ESP32S2
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pinMatrixOutAttach(pin, LEDC_LS_SIG_OUT0_IDX + chan, false, false);
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#else
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pinMatrixOutAttach(pin, ((chan/8)?LEDC_LS_SIG_OUT0_IDX:LEDC_HS_SIG_OUT0_IDX) + (chan%8), false, false);
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#endif
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}
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void ledcDetachPin(uint8_t pin)
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