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Code Issues Releases Activity

[PWM] multipin state tracking

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This commit is contained in:
chromoxdor
2026-03-02 19:51:22 +01:00
parent 1b1f4b213a
commit ff99b728f7
1 changed files with 19 additions and 13 deletions
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src/src/Helpers/Hardware_PWM.cpp
+19 -13
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@@ -168,31 +168,37 @@ void detachLedChannel(int pin) { ledcDetach(pin); }
uint32_t analogWriteESP32(int pin, int value, uint32_t frequency)
{
static int lastPin = -1;
static int8_t ledChannel = -1;
static int8_t ledChannel[GPIO_NUM_MAX];
static bool initialized = false;
if (value == 0) {
if (!initialized) {
for (int i = 0; i < GPIO_NUM_MAX; ++i) {
ledChannel[i] = -1;
}
initialized = true;
}
if ((value == 0)) {
detachLedChannel(pin);
lastPin = -1;
return 0;
ledChannel[pin] = -1;
}
// find existing channel if this pin has been used before
uint8_t resolution = 10;
value = adapt_ledc_frequency_resolution_duty(frequency, resolution, value);
// Only update frequency & attach channel if pin/freq changed
if ((lastPin != pin) || (ledcReadFreq(pin) != frequency)) {
value = adapt_ledc_frequency_resolution_duty(frequency, resolution, value);
ledChannel = attachLedChannel(pin, frequency, resolution);
lastPin = pin;
if (ledChannel[pin] == -1) {
ledChannel[pin] = attachLedChannel(pin, frequency, resolution);
}
if (ledChannel != -1) {
if (ledChannel[pin] != -1) {
# if ESP_IDF_VERSION_MAJOR < 5
ledcWrite(ledChannel, value);
return ledChannelFreq[ledChannel];
ledcWrite(ledChannel[pin], value);
return ledChannelFreq[ledChannel[pin]];
# else // if ESP_IDF_VERSION_MAJOR < 5
ledcWrite(pin, value);
ledcWrite(pin, value);
return ledcReadFreq(pin);
# endif // if ESP_IDF_VERSION_MAJOR < 5
}