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Code Issues Releases Wiki Activity

Fix rp2040 pwm to use pico-sdk, not mbed (#4059)

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This commit is contained in:
Jesse Hills
2022-11-22 12:19:52 +13:00
committed by GitHub
parent 2b032e8606
commit 621771e1ee
2 changed files with 24 additions and 10 deletions
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26
esphome/components/rp2040_pwm/rp2040_pwm.cpp
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@@ -6,7 +6,9 @@
#include "esphome/core/log.h"
#include "esphome/core/macros.h"
#include <PinNames.h>
#include <hardware/clocks.h>
#include <hardware/gpio.h>
#include <hardware/pwm.h>
namespace esphome {
namespace rp2040_pwm {
@@ -15,10 +17,17 @@ static const char *const TAG = "rp2040_pwm";
void RP2040PWM::setup() {
ESP_LOGCONFIG(TAG, "Setting up RP2040 PWM Output...");
this->pin_->setup();
this->pwm_ = new mbed::PwmOut((PinName) this->pin_->get_pin());
this->turn_off();
this->setup_pwm_();
}
void RP2040PWM::setup_pwm_() {
pwm_config config = pwm_get_default_config();
pwm_config_set_clkdiv(&config, clock_get_hz(clk_sys) / (255.0f * this->frequency_));
pwm_config_set_wrap(&config, 254);
pwm_init(pwm_gpio_to_slice_num(this->pin_->get_pin()), &config, true);
}
void RP2040PWM::dump_config() {
ESP_LOGCONFIG(TAG, "RP2040 PWM:");
LOG_PIN(" Pin: ", this->pin_);
@@ -33,10 +42,13 @@ void HOT RP2040PWM::write_state(float state) {
state = 1.0f - state;
}
auto total_time_us = static_cast<uint32_t>(roundf(1e6f / this->frequency_));
if (frequency_changed_) {
this->setup_pwm_();
frequency_changed_ = false;
}
this->pwm_->period_us(total_time_us);
this->pwm_->write(state);
gpio_set_function(this->pin_->get_pin(), GPIO_FUNC_PWM);
pwm_set_gpio_level(this->pin_->get_pin(), state * 255.0f);
}
} // namespace rp2040_pwm