49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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#include "esp_log.h"
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#include "user_board.h"
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#include "app_lib_bat_impl.h"
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#define BATTERY_CAP 3000.0
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#define MAH_LSB 0.0850 // Shunt 50mR
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#define PRESCALER_M LTC2941_PRE_128
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const static char *TAG = "TASK_BAT";
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TaskHandle_t xTaskBatteryExampleHandle = NULL;
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void vTasBatteryExample(void *pvParameters) {
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app_lib_bat_impl_t impl = {
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.i2c_num = BOARD_SYSTEM_I2C_NUM
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};
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ltc2941_t battery_fg = {
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.user_data = &impl,
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.cb = {
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.read_register_cb = (ltc2941_ret_t (*)(void *, uint8_t, uint8_t *))app_lib_bat_read_register,
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.write_register_cb = (ltc2941_ret_t (*)(void *, uint8_t, uint8_t))app_lib_bat_write_register
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},
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.config = {
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.alert_level = LTC2941_ALERT_3_0V,
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.alert_mode = LTC2941_ALERT_DISABLED,
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.prescaler = PRESCALER_M
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}
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};
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ltc2941_init(&battery_fg);
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for(;;) {
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uint16_t fg_data = 0x00;
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ltc2941_read_charge(&battery_fg, &fg_data);
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float mah = fg_data * MAH_LSB;
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float percentage = fg_data * MAH_LSB * 100.0 / BATTERY_CAP;
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ESP_LOGI(TAG, "Capacity: %04.2fmAh, Charge: %03.2f%%", mah, percentage);
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vTaskDelay(pdMS_TO_TICKS(30000));
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}
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} |