STM32F429 ADC采样，测试可以获取正确值
main.c
MX_ADC1_Init();
uhADCxConvertedValue=Get_Adc_Average(ADC_CHANNEL_10,20);
adc.c
/**
******************************************************************************
* File Name : ADC.c
* Description : This file provides code for the configuration
* of the ADC instances.
******************************************************************************
*
* COPYRIGHT(c) 2016 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "adc.h"
#include "gpio.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
ADC_ChannelConfTypeDef sConfig;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
//ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc1.Instance=ADC1;
hadc1.Init.ClockPrescaler=ADC_CLOCK_SYNC_PCLK_DIV4;
hadc1.Init.Resolution=ADC_RESOLUTION_12B;
hadc1.Init.DataAlign=ADC_DATAALIGN_RIGHT;
hadc1.Init.ScanConvMode=DISABLE;
hadc1.Init.EOCSelection=DISABLE;
hadc1.Init.ContinuousConvMode=DISABLE;
hadc1.Init.NbrOfConversion=1;
hadc1.Init.DiscontinuousConvMode=DISABLE;
hadc1.Init.NbrOfDiscConversion=0;
hadc1.Init.ExternalTrigConv=ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge=ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.DMAContinuousRequests=DISABLE;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
*/
sConfig.Channel = ADC_CHANNEL_10;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
/**ADC1 GPIO Configuration
PC0 ------> ADC1_IN10
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
}
}
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
/*##-1- Reset peripherals ##################################################*/
__HAL_RCC_ADC_FORCE_RESET();
__HAL_RCC_ADC_RELEASE_RESET();
/*##-2- Disable peripherals and GPIO Clocks ################################*/
/* De-initialize the ADC Channel GPIO pin */
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_0);
}
/* USER CODE BEGIN 1 */
//ADC Value;
//ch: channel 0~16;
//return: adc single value;
double Get_Adc(uint32_t ch)
{
ADC_ChannelConfTypeDef ADC1_ChanConf;
ADC1_ChanConf.Channel=ch;
ADC1_ChanConf.Rank=1;
ADC1_ChanConf.SamplingTime=ADC_SAMPLETIME_480CYCLES; //sampling time
ADC1_ChanConf.Offset=0;
HAL_ADC_ConfigChannel(&hadc1,&ADC1_ChanConf);
HAL_ADC_Start(&hadc1); //start adc
HAL_ADC_PollForConversion(&hadc1,10);
return (uint16_t)HAL_ADC_GetValue(&hadc1);
}
//Get ADC average value;
//times:sampling times;
//return: average value;
uint16_t Get_Adc_Average(uint32_t ch,uint8_t times)
{
uint32_t temp_val=0;
uint8_t t;
for(t=0;t<times;t++)
{
temp_val+=Get_Adc(ch);
//delay_ms(5);
HAL_Delay(5);
}
return temp_val/times;
}
/* USER CODE END 1 */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
顶一下咯； 谢谢分享 学习了 学习下 cube,HAL库很高大上
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