iot增加屏幕背光亮度调节 (#150)

2025-02-14 00:21:46 +08:00
parent b889355d8d
commit 9b8db4a551
13 changed files with 59 additions and 4 deletions
--- a/main/display/lcd_display.cc
+++ b/main/display/lcd_display.cc
@@ -132,7 +132,7 @@ void LcdDisplay::InitializeBacklight(gpio_num_t backlight_pin) {
        .speed_mode = LEDC_LOW_SPEED_MODE,
        .duty_resolution = LEDC_TIMER_10_BIT,
        .timer_num = LEDC_TIMER_0,
-        .freq_hz = 5000,
+        .freq_hz = 20000,//背光pwm频率需要高一点，防止电感啸叫
        .clk_cfg = LEDC_AUTO_CLK,
        .deconfigure = false
    };