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Fix atoms3 backlight control (#959)

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This commit is contained in:
Forairaaaaa
2025-07-22 17:55:33 +08:00
committed by GitHub
parent eb0bba2c89
commit 721b58f8c7
3 changed files with 4 additions and 4 deletions
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2
main/boards/atoms3-echo-base/atoms3_echo_base.cc
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@@ -229,7 +229,7 @@ public:
}
virtual Backlight* GetBacklight() override {
static PwmBacklight backlight(DISPLAY_BACKLIGHT_PIN, DISPLAY_BACKLIGHT_OUTPUT_INVERT);
static PwmBacklight backlight(DISPLAY_BACKLIGHT_PIN, DISPLAY_BACKLIGHT_OUTPUT_INVERT, 256);
return &backlight;
}
};

4
main/boards/common/backlight.cc
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@@ -81,12 +81,12 @@ void Backlight::OnTransitionTimer() {
}
}
PwmBacklight::PwmBacklight(gpio_num_t pin, bool output_invert) : Backlight() {
PwmBacklight::PwmBacklight(gpio_num_t pin, bool output_invert, uint32_t freq_hz) : Backlight() {
const ledc_timer_config_t backlight_timer = {
.speed_mode = LEDC_LOW_SPEED_MODE,
.duty_resolution = LEDC_TIMER_10_BIT,
.timer_num = LEDC_TIMER_0,
.freq_hz = 25000, //背光pwm频率需要高一点，防止电感啸叫
.freq_hz = freq_hz, //背光pwm频率需要高一点，防止电感啸叫
.clk_cfg = LEDC_AUTO_CLK,
.deconfigure = false
};

2
main/boards/common/backlight.h
View File

@@ -29,7 +29,7 @@ protected:
class PwmBacklight : public Backlight {
public:
PwmBacklight(gpio_num_t pin, bool output_invert = false);
PwmBacklight(gpio_num_t pin, bool output_invert = false, uint32_t freq_hz = 25000);
~PwmBacklight();
void SetBrightnessImpl(uint8_t brightness) override;