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Code Issues Releases Activity

[PWM] using ledcRead()

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This commit is contained in:
chromoxdor
2026-03-03 10:25:58 +01:00
parent c9b16d9d6f
commit f441e95080
1 changed files with 13 additions and 24 deletions
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src/src/Helpers/Hardware_PWM.cpp
+13 -24
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@@ -158,8 +158,12 @@ int8_t attachLedChannel(int pin, uint32_t frequency, uint8_t resolution)
if (frequency == 0) {
frequency = ESPEASY_PWM_DEFAULT_FREQUENCY;
}
ledcDetach(pin); // See: https://github.com/espressif/arduino-esp32/issues/9212
return ledcAttach(pin, frequency, resolution) ? 0 : -1;
if (ledcRead(pin) == 0) {
ledcDetach(pin); // See: https://github.com/espressif/arduino-esp32/issues/9212
return ledcAttach(pin, frequency, resolution) ? 0 : -1;
}
else { return 0; }
}
void detachLedChannel(int pin) { ledcDetach(pin); }
@@ -168,38 +172,23 @@ void detachLedChannel(int pin) { ledcDetach(pin); }
uint32_t analogWriteESP32(int pin, int value, uint32_t frequency)
{
static int8_t ledChannel[GPIO_NUM_MAX];
static bool initialized = false;
if (!initialized) {
for (int i = 0; i < GPIO_NUM_MAX; ++i) {
ledChannel[i] = -1;
}
initialized = true;
}
if ((value == 0)) {
if (value == 0) {
detachLedChannel(pin);
ledChannel[pin] = -1;
return 0;
}
// find existing channel if this pin has been used before
uint8_t resolution = 10;
value = adapt_ledc_frequency_resolution_duty(frequency, resolution, value);
int8_t ledChannel = attachLedChannel(pin, frequency, resolution);
// Only update frequency & attach channel if pin/freq changed
if (ledChannel[pin] == -1) {
ledChannel[pin] = attachLedChannel(pin, frequency, resolution);
}
if (ledChannel[pin] != -1) {
if (ledChannel != -1) {
# if ESP_IDF_VERSION_MAJOR < 5
ledcWrite(ledChannel[pin], value);
return ledChannelFreq[ledChannel[pin]];
ledcWrite(ledChannel, value);
return ledChannelFreq[ledChannel];
# else // if ESP_IDF_VERSION_MAJOR < 5
ledcWrite(pin, value);
ledcWrite(pin, value);
return ledcReadFreq(pin);
# endif // if ESP_IDF_VERSION_MAJOR < 5
}