STM32单片机如何实现规则多通道转换

STM32单片机如何实现规则多通道转换,第1张

看了这个代码之后终于明白了规则多通道转换是怎么回事,以及整体如何实现了。附代码:

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

* FuncTIon Name : main

* DescripTIon : Main program

* Input : None

* Output : None

* Return : None

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

int main(void)

{

#ifdef DEBUG

debug();

#endif

/* System clocks configuraTIon ---------------------------------------------*/

RCC_ConfiguraTIon();

/* NVIC configuration ------------------------------------------------------*/

NVIC_Configuration();

/* GPIO configuration ------------------------------------------------------*/

GPIO_Configuration();

LcdShow_Init();

/* DMA1 channel1 configuration ----------------------------------------------*/

STM32单片机如何实现规则多通道转换,STM32单片机如何实现规则多通道转换,第2张

DMA_DeInit(DMA1_Channel1);

DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//外设地址

DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_RCVTab;//内存地址

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//dma传输方向单向

DMA_InitStructure.DMA_BufferSize = 160;//设置DMA在传输时缓冲区的长度 word

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//设置DMA的外设递增模式,一个外设

DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//设置DMA的内存递增模式,

DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//外设数据字长

DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//内存数据字长

DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//设置DMA的传输模式:连续不断的循环模式

DMA_InitStructure.DMA_Priority = DMA_Priority_High;//设置DMA的优先级别

DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问

DMA_Init(DMA1_Channel1, &DMA_InitStructure);

/* Enable DMA1 channel1 */

DMA_Cmd(DMA1_Channel1, ENABLE);

/* ADC1 configuration ------------------------------------------------------*/

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//独立工作模式

ADC_InitStructure.ADC_ScanConvMode = ENABLE;//扫描方式

ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//连续转换

ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//外部触发禁止

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//数据右对齐

ADC_InitStructure.ADC_NbrOfChannel = 8;//用于转换的通道数

ADC_Init(ADC1, &ADC_InitStructure);

/* ADC1 regular channels configuration [规则模式通道配置]*/

ADC_RegularChannelConfig(ADC1, ADC_Channel_8 , 1, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_9 , 2, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 3, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 4, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 5, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 6, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 7, ADC_SampleTime_239Cycles5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 8, ADC_SampleTime_239Cycles5);

/* Enable ADC1 DMA [使能ADC1 DMA]*/

ADC_DMACmd(ADC1, ENABLE);

/* Enable ADC1 [使能ADC1]*/

ADC_Cmd(ADC1, ENABLE);

/* Enable ADC1 reset calibaration register */

ADC_ResetCalibration(ADC1);

/* Check the end of ADC1 reset calibration register */

while(ADC_GetResetCalibrationStatus(ADC1));

/* Start ADC1 calibaration */

ADC_StartCalibration(ADC1);

/* Check the end of ADC1 calibration */

while(ADC_GetCalibrationStatus(ADC1));

/* Start ADC1 Software Conversion */

ADC_SoftwareStartConvCmd(ADC1, ENABLE);

}

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原文地址: http://outofmemory.cn/dianzi/2597163.html

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