stm32 规则组和注入组程序

[复制链接]

gujiamao 发布时间：2015-5-3 10:45

文章
文章封面:	-
文章简介:	-

第一种(DMA + 规则)
RCC_ADCCLKConfig(RCC_PCLK2_Div6); /*72Mhz/6 = 12Mhz*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//DMA Config
DMA_InitTypeDef DMA_InitStructure;
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = 0x4001244C; //ADC1的DR地址
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)hwAdc_Converted_Value; //不加&应该也可以数组名代表地址
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//外设向内存传数据
DMA_InitStructure.DMA_BufferSize = DMA_N * DMA_C; //DMA缓存大小 //64 * 4
DMA_InitStructure.DMA_PeripheralInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //目标内存地址自动后移
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//DMA传送数据尺寸16位
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//常用循环缓存模式
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//禁止内存到内存模式
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel1, ENABLE);

//ADC Config
   ADC_InitTypeDef ADC_InitStructure;
   ADC_DeInit(ADC1);
   ADC_StructInit(&ADC_InitStructure);
   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 = DMA_C; //4
   ADC_Init(ADC1, &ADC_InitStructure);
   ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5); //9Mhz/(239.5 + 12.5) = 35.7Khz
   ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5); //9Mhz/(239.5 + 12.5) = 35.7Khz
   ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_239Cycles5); //9Mhz/(239.5 + 12.5) = 35.7Khz
   ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_239Cycles5); //9Mhz/(239.5 + 12.5) = 35.7Khz
   ADC_DMACmd(ADC1,ENABLE);
   ADC_Cmd(ADC1, ENABLE);
   ADC_ResetCalibration(ADC1);
   while(ADC_GetResetCalibrationStatus(ADC1));
   ADC_StartCalibration(ADC1);
   while(ADC_GetCalibrationStatus(ADC1));
   ADC_SoftwareStartConvCmd(ADC1, DISABLE);
第二种（注入组）
RCC_ADCCLKConfig(RCC_PCLK2_Div6); /*72Mhz/6 = 12Mhz*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//ADC INIT, ADC1 INJECTED CH, CONT SCAN MODE
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_ADCCLKConfig(RCC_PCLK2_Div6); /*72Mhz/6 = 12Mhz, note: 14MHz at most*/
ADC_DeInit(ADC1);
ADC_StructInit(&ADC_InitStructure);
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_Left;
ADC_InitStructure.ADC_NbrOfChannel = 0;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_InjectedSequencerLengthConfig(ADC1, 4); //!!!length must be configured at first
ADC_InjectedChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5); //12Mhz / (12.5 + 239.5) = 47Khz
ADC_InjectedChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_239Cycles5);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_239Cycles5);
ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_None);
ADC_AutoInjectedConvCmd(ADC1, ENABLE); //!!!must be set because inject channel do not support CONT mode independently
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1)); //WARNNING: DEAD LOOP!!!
ADC_SoftwareStartConvCmd(ADC1, DISABLE);