222 lines
7.3 KiB
C++
222 lines
7.3 KiB
C++
#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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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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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_value;
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ESP_ERROR_CHECK(adc_oneshot_read(adc_handle_, ADC_CHANNEL_3, &adc_value));
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// 将 ADC 值添加到队列中
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adc_values_.push_back(adc_value);
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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_adc = 0;
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for (auto value : adc_values_) {
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average_adc += value;
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}
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average_adc /= adc_values_.size();
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/*
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电量 (%) 电压 (V) 分压后电压 (V)
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0% 3.1 1.033
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20% 3.34 1.113
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40% 3.58 1.193
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60% 3.82 1.273
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80% 4.06 1.353
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100% 4.2 1.400
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电量 (%) 分压后电压 (V) ADC值（理论） 实际范围（±5%误差）
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0% 1.033 1284 1220~1348
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20% 1.113 1384 1315~1453
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40% 1.193 1483 1409~1557
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60% 1.273 1583 1504~1662
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80% 1.353 1682 1598~1766
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100% 1.400 1745 1658~1832
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-------------------------------------------------------
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电量 (%) 电压 (V) 分压后电压 (V)
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0% 3.1 1.033
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20% 3.28 1.093
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40% 3.46 1.153
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60% 3.64 1.213
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80% 3.82 1.273
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100% 4.1 1.367
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0% 1.033 1284 1220~1348
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20% 1.093 1358 1290~1426
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40% 1.153 1431 1360~1502
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60% 1.213 1505 1430~1580
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80% 1.273 1583 1504~1662
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100% 1.367 1700 1615~1785
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*/
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// 定义电池电量区间
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const struct {
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uint16_t adc;
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uint8_t level;
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} levels[] = {
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{ 1284 , 0},
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{ 1358 , 20},
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{ 1431 , 40},
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{ 1505 , 60},
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{ 1583 , 80},
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{ 1700 , 100}
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};
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// 低于最低值时
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if (average_adc < levels[0].adc) {
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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_adc >= levels[5].adc) {
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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_adc >= levels[i].adc && average_adc < levels[i+1].adc) {
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float ratio = static_cast<float>(average_adc - levels[i].adc) / (levels[i+1].adc - levels[i].adc);
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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 value: %d average: %ld level: %ld", adc_value, average_adc, battery_level_);
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}
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public:
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PowerManager(gpio_num_t pin) : charging_pin_(pin) {
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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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// 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 ADC
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adc_oneshot_unit_init_cfg_t init_config = {
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.unit_id = ADC_UNIT_1,
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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_3, &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() {
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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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