81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
|
|
#include "adc.h"
|
|
|
|
#define ADC1_DR_Address ((uint32_t)0x4001244C)
|
|
__IO uint16_t ADCConvertedValue[6];
|
|
|
|
void adc_init(void)
|
|
{
|
|
ADC_InitTypeDef ADC_InitStructure;
|
|
DMA_InitTypeDef DMA_InitStructure;
|
|
GPIO_InitTypeDef GPIO_InitStructure;
|
|
/* Enable DMA1 clock */
|
|
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
|
|
|
|
/* Enable ADC1 and GPIOC clock */
|
|
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
|
|
GPIO_Init(GPIOA, &GPIO_InitStructure);
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
|
|
GPIO_Init(GPIOB, &GPIO_InitStructure);
|
|
/* DMA1 channel1 configuration ----------------------------------------------*/
|
|
DMA_DeInit(DMA1_Channel1);
|
|
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
|
|
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADCConvertedValue;
|
|
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
|
|
DMA_InitStructure.DMA_BufferSize = 4;
|
|
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
|
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
|
|
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
|
|
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
|
|
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
|
|
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
|
|
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
|
|
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
|
|
|
|
/* Enable DMA1 channel1 */
|
|
DMA_Cmd(DMA1_Channel1, ENABLE);
|
|
|
|
/* ADC1 configuration ------------------------------------------------------*/
|
|
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
|
|
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
|
|
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
|
|
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
|
|
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
|
|
ADC_InitStructure.ADC_NbrOfChannel = 4;
|
|
ADC_Init(ADC1, &ADC_InitStructure);
|
|
|
|
/* ADC1 regular channels configuration */
|
|
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
|
|
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);
|
|
ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 3, ADC_SampleTime_239Cycles5);
|
|
ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 4, ADC_SampleTime_239Cycles5);
|
|
// ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 5, ADC_SampleTime_239Cycles5);
|
|
// ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 6, ADC_SampleTime_239Cycles5);
|
|
|
|
/* Enable ADC1 DMA */
|
|
ADC_DMACmd(ADC1, ENABLE);
|
|
|
|
/* Enable ADC1 */
|
|
ADC_Cmd(ADC1, ENABLE);
|
|
|
|
/* Enable ADC1 reset calibration register */
|
|
ADC_ResetCalibration(ADC1);
|
|
/* Check the end of ADC1 reset calibration register */
|
|
while (ADC_GetResetCalibrationStatus(ADC1))
|
|
;
|
|
|
|
/* Start ADC1 calibration */
|
|
ADC_StartCalibration(ADC1);
|
|
/* Check the end of ADC1 calibration */
|
|
while (ADC_GetCalibrationStatus(ADC1))
|
|
;
|
|
|
|
/* Start ADC1 Software Conversion */
|
|
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
|
|
}
|