Home-IoT/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2024-12-22 13:34:54 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

PWM Output on RP2040 for high frequencies (#5204)

Browse source
This commit is contained in:
Maciej Sokołowski 2023-08-07 01:41:44 +02:00 committed by GitHub
parent dfffa67c0f
commit 0ae3fcb0b7
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
esphome/components/rp2040_pwm/rp2040_pwm.cpp
View file

@ -27,8 +27,12 @@ void RP2040PWM::setup_pwm_() {
uint32_t clock = clock_get_hz(clk_sys);
float divider = ceil(clock / (4096 * this->frequency_)) / 16.0f;
if (divider < 1.0f) {
divider = 1.0f;
}
uint16_t wrap = clock / divider / this->frequency_ - 1;
this->wrap_ = wrap;
ESP_LOGD(TAG, "divider=%.5f, wrap=%d, clock=%d", divider, wrap, clock);
pwm_config_set_clkdiv(&config, divider);
pwm_config_set_wrap(&config, wrap);