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Fix ledc can't find bit_depth (#786)

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Fixes https://github.com/esphome/issues/issues/759
This commit is contained in:
Otto Winter 2019-10-21 22:55:27 +02:00
parent eca3685ea0
commit 31aa3c55ca
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GPG key ID: DB66C0BE6013F97E
1 changed files with 3 additions and 3 deletions
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6
esphome/components/ledc/ledc_output.cpp
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@ -42,8 +42,8 @@ float ledc_min_frequency_for_bit_depth(uint8_t bit_depth) {
} }
optional<uint8_t> ledc_bit_depth_for_frequency(float frequency) { optional<uint8_t> ledc_bit_depth_for_frequency(float frequency) {
for (int i = 20; i >= 1; i--) { for (int i = 20; i >= 1; i--) {
const float min_frequency = ledc_min_frequency_for_bit_depth(frequency); const float min_frequency = ledc_min_frequency_for_bit_depth(i);
const float max_frequency = ledc_max_frequency_for_bit_depth(frequency); const float max_frequency = ledc_max_frequency_for_bit_depth(i);
if (min_frequency <= frequency && frequency <= max_frequency) if (min_frequency <= frequency && frequency <= max_frequency)
return i; return i;
} }
@ -56,7 +56,7 @@ void LEDCOutput::apply_frequency(float frequency) {
ESP_LOGW(TAG, "Frequency %f can't be achieved with any bit depth", frequency); ESP_LOGW(TAG, "Frequency %f can't be achieved with any bit depth", frequency);
this->status_set_warning(); this->status_set_warning();
} }
this->bit_depth_ = *bit_depth_opt; this->bit_depth_ = bit_depth_opt.value_or(8);
this->frequency_ = frequency; this->frequency_ = frequency;
ledcSetup(this->channel_, frequency, this->bit_depth_); ledcSetup(this->channel_, frequency, this->bit_depth_);
// re-apply duty // re-apply duty