Add Backlight and PowerSaveTimer

2025-03-05 09:37:13 +08:00
parent 3609aaa412
commit cead024698
61 changed files with 1331 additions and 3840 deletions
--- a/main/boards/common/backlight.cc
+++ b/main/boards/common/backlight.cc
@@ -0,0 +1,113 @@
+#include "backlight.h"
+#include "settings.h"
+
+#include <esp_log.h>
+#include <driver/ledc.h>
+
+#define TAG "Backlight"
+
+
+Backlight::Backlight() {
+    // 创建背光渐变定时器
+    const esp_timer_create_args_t timer_args = {
+        .callback = [](void* arg) {
+            auto self = static_cast<Backlight*>(arg);
+            self->OnTransitionTimer();
+        },
+        .arg = this,
+        .dispatch_method = ESP_TIMER_TASK,
+        .name = "backlight_timer",
+        .skip_unhandled_events = true,
+    };
+    ESP_ERROR_CHECK(esp_timer_create(&timer_args, &transition_timer_));
+}
+
+Backlight::~Backlight() {
+    if (transition_timer_ != nullptr) {
+        esp_timer_stop(transition_timer_);
+        esp_timer_delete(transition_timer_);
+    }
+}
+
+void Backlight::RestoreBrightness() {
+    // Load brightness from settings
+    Settings settings("display");
+    SetBrightness(settings.GetInt("brightness", 75));
+}
+
+void Backlight::SetBrightness(uint8_t brightness, bool permanent) {
+    if (brightness > 100) {
+        brightness = 100;
+    }
+
+    if (brightness_ == brightness) {
+        return;
+    }
+
+    if (permanent) {
+        Settings settings("display", true);
+        settings.SetInt("brightness", brightness);
+    }
+
+    target_brightness_ = brightness;
+    step_ = (target_brightness_ > brightness_) ? 1 : -1;
+
+    if (transition_timer_ != nullptr) {
+        // 启动定时器，每 5ms 更新一次
+        esp_timer_start_periodic(transition_timer_, 5 * 1000);
+    }
+    ESP_LOGI(TAG, "Set brightness to %d", brightness);
+}
+
+void Backlight::OnTransitionTimer() {
+    if (brightness_ == target_brightness_) {
+        esp_timer_stop(transition_timer_);
+        return;
+    }
+
+    brightness_ += step_;
+    SetBrightnessImpl(brightness_);
+
+    if (brightness_ == target_brightness_) {
+        esp_timer_stop(transition_timer_);
+    }
+}
+
+PwmBacklight::PwmBacklight(gpio_num_t pin, bool output_invert) : 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 = 20000, //背光pwm频率需要高一点，防止电感啸叫
+        .clk_cfg = LEDC_AUTO_CLK,
+        .deconfigure = false
+    };
+    ESP_ERROR_CHECK(ledc_timer_config(&backlight_timer));
+
+    // Setup LEDC peripheral for PWM backlight control
+    const ledc_channel_config_t backlight_channel = {
+        .gpio_num = pin,
+        .speed_mode = LEDC_LOW_SPEED_MODE,
+        .channel = LEDC_CHANNEL_0,
+        .intr_type = LEDC_INTR_DISABLE,
+        .timer_sel = LEDC_TIMER_0,
+        .duty = 0,
+        .hpoint = 0,
+        .flags = {
+            .output_invert = output_invert,
+        }
+    };
+    ESP_ERROR_CHECK(ledc_channel_config(&backlight_channel));
+}
+
+PwmBacklight::~PwmBacklight() {
+    ledc_stop(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, 0);
+}
+
+void PwmBacklight::SetBrightnessImpl(uint8_t brightness) {
+    // LEDC resolution set to 10bits, thus: 100% = 1023
+    uint32_t duty_cycle = (1023 * brightness) / 100;
+    ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, duty_cycle);
+    ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0);
+}
+