#include "adc.h"
#include "main.h"
#include "network.h"
#include "led.h"
#include <string.h>
#include <stdio.h>

ADC_HandleTypeDef hadc1;

void adcInit(void)
{
    ADC_ChannelConfTypeDef sConfig = {0};
    hadc1.Instance = ADC1;
    hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
    hadc1.Init.ContinuousConvMode = DISABLE;
    hadc1.Init.DiscontinuousConvMode = DISABLE;
    hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc1.Init.NbrOfConversion = 1;
    if (HAL_ADC_Init(&hadc1) != HAL_OK) Error_Handler();

    sConfig.Channel = ADC_CHANNEL_0;
    sConfig.Rank = ADC_REGULAR_RANK_1;
    sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) Error_Handler();
}

uint16_t getAdc(void)
{
    uint16_t adc_value = 0;
    HAL_ADC_Start(&hadc1);
    if (HAL_ADC_PollForConversion(&hadc1, 10) == HAL_OK) {
        adc_value = HAL_ADC_GetValue(&hadc1);
    }
    HAL_ADC_Stop(&hadc1);
    return adc_value;
}

void update_batter(void)
{
    static _Bool powoff = 0;
    float batter_valtage;
    uint16_t adc_value;
    adc_value = getAdc();
    batter_valtage = adc_value * (3.3 / 4096.0);
    batter_valtage = batter_valtage * 11.0;
    batter_valtage += 0.6;
    batter_valtage = 100 * (batter_valtage - 10.8) / (12.6 - 10.8);
    if (batter_valtage < 10 && powoff == 0) {
        log_info("> Low battery: %d%%", (int)batter_valtage);
        powoff = 1;
        NET_publish_power(0);
    }
    /* LED1: 低电量时常亮 */
    if (powoff) LED1_ON; else LED1_OFF;
}