OBD_BleBox/BleCanBoxCode/STM32F103RCT6/HARDWARE/ADC/hal_adc.c

#include "hal_adc.h"

#include "sys_log.h"
#include "sys_timer.h"

#include "delay.h"

#include "board.h"

#define GET_ADC_CNT  3

ADC_HandleTypeDef ADC1_Handler;     //ADC���

//��ʼ��ADC
//ch: ADC_channels
//ͨ��ֵ 0~16ȡֵ��ΧΪ��ADC_CHANNEL_0~ADC_CHANNEL_16
void HAL_AdcInit(void)
{
    RCC_PeriphCLKInitTypeDef ADC_CLKInit;
    ADC_CLKInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;       //ADC����ʱ��
    ADC_CLKInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;          //��Ƶ����6ʱ��Ϊ72M/6=12MHz
    HAL_RCCEx_PeriphCLKConfig(&ADC_CLKInit);                    //����ADCʱ��
    ADC1_Handler.Instance = ADC1;
    ADC1_Handler.Init.DataAlign = ADC_DATAALIGN_RIGHT;           //�Ҷ���
    ADC1_Handler.Init.ScanConvMode = DISABLE;                    //��ɨ��ģʽ
    ADC1_Handler.Init.ContinuousConvMode = DISABLE;              //�ر�����ת��
    ADC1_Handler.Init.NbrOfConversion = 1;                       //1��ת���ڹ��������� Ҳ����ֻת����������1
    ADC1_Handler.Init.DiscontinuousConvMode = DISABLE;           //��ֹ����������ģʽ
    ADC1_Handler.Init.NbrOfDiscConversion = 0;                   //����������ͨ����Ϊ0
    ADC1_Handler.Init.ExternalTrigConv = ADC_SOFTWARE_START;     //��������
    HAL_ADC_Init(&ADC1_Handler);                                 //��ʼ��
    HAL_ADCEx_Calibration_Start(&ADC1_Handler);                  //У׼ADC
}

//ADC�ײ��������������ã�ʱ��ʹ��
//�˺����ᱻHAL_ADC_Init()����
//hadc:ADC���
void HAL_ADC_MspInit(ADC_HandleTypeDef *hadc)
{
    GPIO_InitTypeDef GPIO_Initure;
    __HAL_RCC_ADC1_CLK_ENABLE();            //ʹ��ADC1ʱ��
    __HAL_RCC_GPIOA_CLK_ENABLE();           //����GPIOAʱ��
    GPIO_Initure.Pin = ADC_PIN;          //PA1
    GPIO_Initure.Mode = GPIO_MODE_ANALOG;   //ģ��
    GPIO_Initure.Pull = GPIO_NOPULL;        //����������
    HAL_GPIO_Init(ADC_GPIO, &GPIO_Initure);
}
/*
ͨ����  ����  ͨ����  ����  
ͨ��0  PA0   ͨ��8   PB0
ͨ��1  PA1   ͨ��9   PB1
ͨ��2  PA2   ͨ��10  PC0
ͨ��3  PA3   ͨ��11  PC1
ͨ��4  PA4   ͨ��12  PC2
ͨ��5  PA5   ͨ��13  PC3
ͨ��6  PA6   ͨ��14  PC4
ͨ��7  PA7   ͨ��15  PC5
*/
//���ADCֵ
//ch: ͨ��ֵ 0~16��ȡֵ��ΧΪ��ADC_CHANNEL_0~ADC_CHANNEL_16
//����ֵ:ת�����
static uint16_t Get_Adc(uint32_t ch)
{
    ADC_ChannelConfTypeDef ADC1_ChanConf;
    ADC1_ChanConf.Channel = ch;                                 //ͨ��
    ADC1_ChanConf.Rank = 1;                                     //��1����������1
    ADC1_ChanConf.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;    //����ʱ��
    HAL_ADC_ConfigChannel(&ADC1_Handler, &ADC1_ChanConf);       //ͨ������
    HAL_ADC_Start(&ADC1_Handler);                               //����ADC
    HAL_ADC_PollForConversion(&ADC1_Handler, 10);               //��ѯת��
    return (uint16_t)HAL_ADC_GetValue(&ADC1_Handler);                //�������һ��ADC1�������ת�����
}

//��ȡָ��ͨ����ת��ֵ��ȡtimes��,Ȼ��ƽ��
uint16_t HAL_AdcGetVal(void)
{
    u32 temp_val = 0;
    u8 t;

    for (t = 0; t < GET_ADC_CNT; t++)
    {
        temp_val += Get_Adc(ADC_CHANNEL_1);
        delay_ms(3);
    }
    return temp_val / GET_ADC_CNT;
}

void get_adv_val_timer_callback(void)
{
    int mv;
    uint16_t val = HAL_AdcGetVal();

    mv = val*(3.3/4096)*1000;

    DLOG_I("adv_val:%d,mv:%d",val,mv);
}


void HAL_AdcGetValTimerInit(void)
{
    HAL_TimerRegister(get_adv_val_timer_callback, 1000);
}