#ifndef __POWER_MANAGER_H__
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#define __POWER_MANAGER_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_log.h>
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#include <esp_timer.h>
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class PowerManager {
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private:
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// 电池电量区间-分压电阻为2个100k
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static constexpr struct {
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uint16_t adc;
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uint8_t level;
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} BATTERY_LEVELS[] = {{2150, 0}, {2450, 100}};
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static constexpr size_t BATTERY_LEVELS_COUNT = 2;
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static constexpr size_t ADC_VALUES_COUNT = 10;
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esp_timer_handle_t timer_handle_ = nullptr;
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gpio_num_t charging_pin_;
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adc_unit_t adc_unit_;
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adc_channel_t adc_channel_;
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uint16_t adc_values_[ADC_VALUES_COUNT];
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size_t adc_values_index_ = 0;
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size_t adc_values_count_ = 0;
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uint8_t battery_level_ = 100;
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bool is_charging_ = false;
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adc_oneshot_unit_handle_t adc_handle_;
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void CheckBatteryStatus() {
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is_charging_ = gpio_get_level(charging_pin_) == 0;
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ReadBatteryAdcData();
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}
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void ReadBatteryAdcData() {
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int adc_value;
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ESP_ERROR_CHECK(adc_oneshot_read(adc_handle_, adc_channel_, &adc_value));
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adc_values_[adc_values_index_] = adc_value;
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adc_values_index_ = (adc_values_index_ + 1) % ADC_VALUES_COUNT;
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if (adc_values_count_ < ADC_VALUES_COUNT) {
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adc_values_count_++;
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}
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uint32_t average_adc = 0;
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for (size_t i = 0; i < adc_values_count_; i++) {
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average_adc += adc_values_[i];
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}
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average_adc /= adc_values_count_;
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CalculateBatteryLevel(average_adc);
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// ESP_LOGI("PowerManager", "ADC值: %d 平均值: %ld 电量: %u%%", adc_value, average_adc,
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// battery_level_);
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}
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void CalculateBatteryLevel(uint32_t average_adc) {
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if (average_adc <= BATTERY_LEVELS[0].adc) {
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battery_level_ = 0;
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} else if (average_adc >= BATTERY_LEVELS[BATTERY_LEVELS_COUNT - 1].adc) {
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battery_level_ = 100;
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} else {
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float ratio = static_cast<float>(average_adc - BATTERY_LEVELS[0].adc) /
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(BATTERY_LEVELS[1].adc - BATTERY_LEVELS[0].adc);
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battery_level_ = ratio * 100;
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}
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}
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public:
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PowerManager(gpio_num_t charging_pin, adc_unit_t adc_unit = ADC_UNIT_2,
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adc_channel_t adc_channel = ADC_CHANNEL_3)
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: charging_pin_(charging_pin), adc_unit_(adc_unit), adc_channel_(adc_channel) {
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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_ENABLE;
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gpio_config(&io_conf);
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esp_timer_create_args_t timer_args = {
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.callback =
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[](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)); // 1秒
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InitializeAdc();
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}
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void InitializeAdc() {
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adc_oneshot_unit_init_cfg_t init_config = {
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.unit_id = adc_unit_,
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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_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_, &chan_config));
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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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if (adc_handle_) {
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adc_oneshot_del_unit(adc_handle_);
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}
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}
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bool IsCharging() { return is_charging_; }
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uint8_t GetBatteryLevel() { return battery_level_; }
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};
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#endif // __POWER_MANAGER_H__
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