EEPW论坛

//******************************************************************************

//name: SystemClock_Config

//introduce: 系统时钟配置

//parameter: none

//return: none

//changetime: 2019.05.21

//******************************************************************************

void SystemClock_Config(void)

{

RCC_ClkInitTypeDef RCC_ClkInitStruct;

RCC_PeriphCLKInitTypeDef PeriphClkInit;

RCC_OscInitTypeDef RCC_OscInitStruct;

__PWR_CLK_ENABLE();

__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSE;

RCC_OscInitStruct.HSEState = RCC_HSE_ON;

RCC_OscInitStruct.HSIState = RCC_HSI_ON; //ADC的时钟源

RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_8;

RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_2;

HAL_RCC_OscConfig(&RCC_OscInitStruct);

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;

RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;

PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;

HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

__SYSCFG_CLK_ENABLE();

}

#include "main.h"

ADC_HandleTypeDef hadc;

GPIO_InitTypeDef GPIO_InitStruct;

ADC_ChannelConfTypeDef sConfig;

//******************************************************************************

//name: ADC_Init

//introduce: ADC初始化

//parameter: none

//return: none

//changetime: 2019.05.21

//******************************************************************************

void ADC_Init(void)

{

uint32_t Calibration=0;

__HAL_RCC_ADC1_CLK_ENABLE();

__HAL_RCC_GPIOB_CLK_ENABLE();

GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3;

GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;

GPIO_InitStruct.Pull = GPIO_NOPULL;

HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

hadc.Instance = ADC1;

hadc.Init.OversamplingMode = DISABLE;

hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2;

hadc.Init.Resolution = ADC_RESOLUTION_12B;

hadc.Init.SamplingTime = ADC_SAMPLETIME_79CYCLES_5;

hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;

hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;

hadc.Init.ContinuousConvMode = DISABLE;

hadc.Init.DiscontinuousConvMode = DISABLE;

hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;

hadc.Init.DMAContinuousRequests = DISABLE;

hadc.Init.EOCSelection = ADC_EOC_SEQ_CONV;

hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;

hadc.Init.LowPowerAutoWait = DISABLE;

hadc.Init.LowPowerFrequencyMode = DISABLE;

hadc.Init.LowPowerAutoPowerOff = DISABLE;

HAL_ADC_Init(&hadc) ;

//启动ADC校验功能

HAL_ADCEx_Calibration_Start(&hadc,ADC_SINGLE_ENDED);

//获取校验值

Calibration = HAL_ADC_GetValue(&hadc);

// 清除之前通道

sConfig.Channel = ADC_CHANNEL_1|ADC_CHANNEL_2|ADC_CHANNEL_3;

sConfig.Rank = ADC_RANK_NONE; // 清除通道属性

HAL_ADC_ConfigChannel(&hadc, &sConfig);

}

//******************************************************************************

//name: GET_ADC

//introduce: 单通道采集ADC的值

//parameter: CH：ADC采集通道

//return: ADC采集值

//changetime: 2019.05.21

//******************************************************************************

uint32_t GET_ADC(uint32_t CH)

{

uint32_t adc_conv_var;

sConfig.Channel = CH;

sConfig.Rank = ADC_RANK_CHANNEL_NUMBER; // 设置通道

HAL_ADC_ConfigChannel(&hadc, &sConfig);

// 启动转换

HAL_ADC_Start(&hadc);

// 等待转换结束

HAL_ADC_PollForConversion(&hadc,20);// 超时20ms

// 读取结果

adc_conv_var = HAL_ADC_GetValue(&hadc);

// 清除通道

sConfig.Rank = ADC_RANK_NONE; // 清除通道

HAL_ADC_ConfigChannel(&hadc, &sConfig);

return adc_conv_var;

}

//******************************************************************************

//name: Get_Adc_Average

//introduce: 多次采集求平均值

//parameter: CH：ADC采集通道

//return: ADC采集值

//changetime: 2019.05.21

//******************************************************************************

void Get_Adc_Average(uint32_t *ch,uint32_t *adcx,uint8_t times)

{

uint32_t temp_val[9]={0};

uint8_t t,i;

for(t=0;t

{

for(i=0;i<9;i++)

{

temp_val+=GET_ADC(ch);

HAL_Delay(5);

}

}

for(i=0;i<9;i++)

{

adcx = temp_val/times;

}

}

while(1)

{

BATTER_VALUE = GET_ADC(ADC_CHANNEL_1);

temp=(float)BATTER_VALUE*(3.3/4096)*2;

printf("temp=%0.2f\r\n",temp);

HAL_Delay(100);

}