#include "stm32f0xx_hal.h"
#include "adc.h"
#include "gpio.h"

ADC_HandleTypeDef hadc;

// Initialize ADC
void adc_init(void)
{
    __ADC1_CLK_ENABLE();

    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.Pin = VBATT_SENSE_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(VBATT_SENSE_GPIO_Port, &GPIO_InitStruct);

    ADC_ChannelConfTypeDef sConfig;
    hadc.Instance = ADC1;
    hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC;
    hadc.Init.Resolution = ADC_RESOLUTION12b;
    hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
    hadc.Init.EOCSelection = EOC_SINGLE_CONV;
    hadc.Init.LowPowerAutoWait = DISABLE;
    hadc.Init.LowPowerAutoPowerOff = DISABLE;
    hadc.Init.ContinuousConvMode = DISABLE;
    hadc.Init.DiscontinuousConvMode = DISABLE;
    hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
    hadc.Init.DMAContinuousRequests = DISABLE;
    hadc.Init.Overrun = OVR_DATA_PRESERVED;
    HAL_ADC_Init(&hadc);

    sConfig.Channel = ADC_CHANNEL_6;
    sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
    sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
    HAL_ADC_ConfigChannel(&hadc, &sConfig);

}