#pragma once
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#include <vector>
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#include <functional>
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#include <esp_timer.h>
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#include <driver/gpio.h>
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#include <esp_adc/adc_oneshot.h>
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#include <esp_adc/adc_cali.h>
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#include <esp_adc/adc_cali_scheme.h>
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class PowerManager {
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private:
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esp_timer_handle_t timer_handle_;
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std::function<void(bool)> on_charging_status_changed_;
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std::function<void(bool)> on_low_battery_status_changed_;
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gpio_num_t charging_pin_ = GPIO_NUM_NC;
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std::vector<uint16_t> adc_values_;
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uint32_t battery_level_ = 0;
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bool is_charging_ = false;
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bool is_low_battery_ = false;
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int ticks_ = 0;
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const int kBatteryAdcInterval = 60;
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const int kBatteryAdcDataCount = 3;
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const int kLowBatteryLevel = 20;
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adc_oneshot_unit_handle_t adc_handle_;
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bool adc_handle_owned_ = false; // 标记ADC句柄是否由本类创建
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adc_cali_handle_t adc_cali_handle_ = nullptr; // ADC校准句柄
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void CheckBatteryStatus() {
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// Get charging status
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bool new_charging_status = gpio_get_level(charging_pin_) == 1;
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if (new_charging_status != is_charging_) {
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is_charging_ = new_charging_status;
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if (on_charging_status_changed_) {
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on_charging_status_changed_(is_charging_);
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}
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ReadBatteryAdcData();
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return;
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}
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// 如果电池电量数据不足，则读取电池电量数据
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if (adc_values_.size() < kBatteryAdcDataCount) {
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ReadBatteryAdcData();
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return;
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}
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// 如果电池电量数据充足，则每 kBatteryAdcInterval 个 tick 读取一次电池电量数据
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ticks_++;
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if (ticks_ % kBatteryAdcInterval == 0) {
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ReadBatteryAdcData();
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}
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}
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void ReadBatteryAdcData() {
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int adc_raw = 0;
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int voltage_mv = 0; // ADC校准后的电压（mV）
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// 多次采样取平均，提高稳定性
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uint32_t adc_sum = 0;
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const int sample_count = 10;
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for (int i = 0; i < sample_count; i++) {
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int temp_raw = 0;
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ESP_ERROR_CHECK(adc_oneshot_read(adc_handle_, ADC_CHANNEL_5, &temp_raw));
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adc_sum += temp_raw;
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vTaskDelay(pdMS_TO_TICKS(10)); // 每次采样间隔10ms
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}
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adc_raw = adc_sum / sample_count;
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// 使用ADC校准获取准确电压
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if (adc_cali_handle_) {
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ESP_ERROR_CHECK(adc_cali_raw_to_voltage(adc_cali_handle_, adc_raw, &voltage_mv));
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} else {
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// 如果没有校准，使用线性计算
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voltage_mv = (int)(adc_raw * 3300.0f / 4095.0f);
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}
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// 根据分压比计算实际电池电压
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// 电路分压比: R21/(R20+R21) = 100K/300K = 1/3
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// 实际电池电压 = ADC测量电压 × 3
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int battery_voltage_mv = voltage_mv * 3;
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// 将电压值添加到队列中用于平滑
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adc_values_.push_back(battery_voltage_mv);
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if (adc_values_.size() > kBatteryAdcDataCount) {
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adc_values_.erase(adc_values_.begin());
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}
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uint32_t average_voltage = 0;
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for (auto value : adc_values_) {
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average_voltage += value;
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}
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average_voltage /= adc_values_.size();
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// 定义电池电量区间（基于实际电池电压，单位mV）
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const struct {
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uint16_t voltage_mv; // 电池电压（mV）
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uint8_t level; // 电量百分比
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} levels[] = {
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{3500, 0}, // 3.5V
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{3640, 20}, // 3.64V
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{3760, 40}, // 3.76V
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{3880, 60}, // 3.88V
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{4000, 80}, // 4.0V
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{4200, 100} // 4.2V
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};
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// 低于最低值时
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if (average_voltage < levels[0].voltage_mv) {
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battery_level_ = 0;
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}
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// 高于最高值时
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else if (average_voltage >= levels[5].voltage_mv) {
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battery_level_ = 100;
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} else {
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// 线性插值计算中间值
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for (int i = 0; i < 5; i++) {
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if (average_voltage >= levels[i].voltage_mv && average_voltage < levels[i+1].voltage_mv) {
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float ratio = static_cast<float>(average_voltage - levels[i].voltage_mv) /
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(levels[i+1].voltage_mv - levels[i].voltage_mv);
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battery_level_ = levels[i].level + ratio * (levels[i+1].level - levels[i].level);
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break;
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}
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}
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}
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// Check low battery status
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if (adc_values_.size() >= kBatteryAdcDataCount) {
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bool new_low_battery_status = battery_level_ <= kLowBatteryLevel;
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if (new_low_battery_status != is_low_battery_) {
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is_low_battery_ = new_low_battery_status;
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if (on_low_battery_status_changed_) {
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on_low_battery_status_changed_(is_low_battery_);
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}
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}
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}
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ESP_LOGI("PowerManager", "ADC raw: %d, ADC voltage: %dmV, Battery: %ldmV (%.2fV), level: %ld%%",
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adc_raw, voltage_mv, average_voltage, average_voltage/1000.0f, battery_level_);
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}
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public:
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// 构造函数：使用外部ADC句柄（用于复用已存在的ADC）
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PowerManager(gpio_num_t pin, adc_oneshot_unit_handle_t* external_adc_handle = nullptr)
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: charging_pin_(pin), adc_handle_owned_(false) {
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if(charging_pin_ != GPIO_NUM_NC){
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// 初始化充电引脚
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gpio_config_t io_conf = {};
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io_conf.intr_type = GPIO_INTR_DISABLE;
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.pin_bit_mask = (1ULL << charging_pin_);
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io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
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io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
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gpio_config(&io_conf);
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}
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// 创建电池电量检查定时器
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esp_timer_create_args_t timer_args = {
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.callback = [](void* arg) {
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PowerManager* self = static_cast<PowerManager*>(arg);
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self->CheckBatteryStatus();
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},
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.arg = this,
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.dispatch_method = ESP_TIMER_TASK,
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.name = "battery_check_timer",
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.skip_unhandled_events = true,
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};
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ESP_ERROR_CHECK(esp_timer_create(&timer_args, &timer_handle_));
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ESP_ERROR_CHECK(esp_timer_start_periodic(timer_handle_, 1000000));
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// 初始化或复用 ADC
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if (external_adc_handle != nullptr && *external_adc_handle != nullptr) {
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// 复用外部ADC句柄
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adc_handle_ = *external_adc_handle;
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adc_handle_owned_ = false;
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} else {
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// 创建新的ADC句柄
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adc_oneshot_unit_init_cfg_t init_config = {
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.unit_id = ADC_UNIT_1, // GPIO6 对应 ADC1
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.ulp_mode = ADC_ULP_MODE_DISABLE,
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};
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ESP_ERROR_CHECK(adc_oneshot_new_unit(&init_config, &adc_handle_));
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adc_handle_owned_ = true;
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}
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// 配置ADC通道
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adc_oneshot_chan_cfg_t chan_config = {
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.atten = ADC_ATTEN_DB_12,
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.bitwidth = ADC_BITWIDTH_12,
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};
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ESP_ERROR_CHECK(adc_oneshot_config_channel(adc_handle_, ADC_CHANNEL_5, &chan_config)); // GPIO6 = ADC1_CHANNEL_5
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// 初始化ADC校准
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adc_cali_curve_fitting_config_t cali_config = {
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.unit_id = ADC_UNIT_1,
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.chan = ADC_CHANNEL_5,
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.atten = ADC_ATTEN_DB_12,
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.bitwidth = ADC_BITWIDTH_12,
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};
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esp_err_t ret = adc_cali_create_scheme_curve_fitting(&cali_config, &adc_cali_handle_);
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if (ret == ESP_OK) {
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ESP_LOGI("PowerManager", "ADC calibration initialized successfully");
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} else {
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ESP_LOGW("PowerManager", "ADC calibration failed, using linear calculation");
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adc_cali_handle_ = nullptr;
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}
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}
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~PowerManager() {
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if (timer_handle_) {
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esp_timer_stop(timer_handle_);
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esp_timer_delete(timer_handle_);
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}
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// 删除ADC校准句柄
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if (adc_cali_handle_) {
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adc_cali_delete_scheme_curve_fitting(adc_cali_handle_);
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}
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// 只有当ADC句柄是本类创建的时候才删除
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if (adc_handle_ && adc_handle_owned_) {
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adc_oneshot_del_unit(adc_handle_);
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}
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}
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bool IsCharging() {
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// 如果电量已经满了，则不再显示充电中
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if (battery_level_ == 100) {
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return false;
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}
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return is_charging_;
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}
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bool IsDischarging() {
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// 没有区分充电和放电，所以直接返回相反状态
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return !is_charging_;
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}
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uint8_t GetBatteryLevel() {
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return battery_level_;
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}
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void OnLowBatteryStatusChanged(std::function<void(bool)> callback) {
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on_low_battery_status_changed_ = callback;
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}
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void OnChargingStatusChanged(std::function<void(bool)> callback) {
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on_charging_status_changed_ = callback;
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}
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};
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