STM32单片机CAN通信与DMA方式ADC等常用调试记录

STM32单片机CAN通信与DMA方式ADC调试记录

• 1.Can的滤波器
• 2.静默和环回模式
• 3.DMA方式ADC
• 4. 常用代码

1.Can的滤波器

1.1.滤波器组合1

// 
	CAN_FilterInitStructure.CAN_FilterNumber=0;	//滤波器0
	CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; 	//
	CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; 	//32位
	

	CAN_FilterInitStructure.CAN_FilterIdHigh=0x2000;	//32??ID 
	CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0xE000;//只关注3位
	CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1y???÷01?áaμ?FIFO0
	CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//?¤??1y???÷0
	CAN_FilterInit(&CAN_FilterInitStructure);			//??2¨?÷3?ê??ˉ

// 
	CAN_FilterInitStructure.CAN_FilterNumber=1;	//滤波器1
	CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; 	//?á±????￡ê?
	CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; 	//32???í 
	
//ID 0x0000 00A0 //LK
	CAN_FilterInitStructure.CAN_FilterIdHigh=0x2000;	//
	CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x1FE0;//只关注8位
	CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1y???÷01?áaμ?
	CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//?¤??1y???÷0
	CAN_FilterInit(&CAN_FilterInitStructure);			//??2¨?÷3?ê??ˉ

收到RxMessage.StdId=100,108,0x110，0x140，0x148，0x150；0x200，0x400，
收不到的ID 0x408,0x208
结论：满足任何一个滤波器规则，就可以被中断收到。

1.2.滤波器组合2

// A code block
	CAN_FilterInitStructure.CAN_FilterNumber=1;	//1y???÷1
	CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; 	//?á±????￡ê?
	CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; 	//32???í 
	
//ID 0x0000 00A0 //LK
	CAN_FilterInitStructure.CAN_FilterIdHigh=0x2000;	//32??ID 
	CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x1FE0;//32??MASK   2?1?D?±ê×????1ê?à??1??￡?2?1?D?êy?
	CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1y???÷01?áaμ?FIFO0
	CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//?¤??1y???÷0
	CAN_FilterInit(&CAN_FilterInitStructure);			//??2¨?÷3?ê??ˉ

收到RxMessage.StdId=100,0x200，0x400，
收不到108,0x110，0x140，0x148，0x150，0x408,0x208，

1.3.滤波器组合3

	CAN_FilterInitStructure.CAN_FilterNumber=0;	//1y???÷0
	CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; 	//?á±????￡ê?
	CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; 	//32???í 

	CAN_FilterInitStructure.CAN_FilterIdHigh=0x2000;	//32??ID 
	CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0xE000;//32??MASK   2?1?D?±ê×????1ê?à??1??￡?2?1?D?êy?
	CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
	CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1y???÷01?áaμ?FIFO0
	CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//?¤??1y???÷0
	CAN_FilterInit(&CAN_FilterInitStructure);			//??2¨?÷3?ê??ˉ

收到RxMessage.StdId=100,108,0x110，0x140，0x148，0x150，
收不到 0x200，0x400,0x408,0x208，

2.静默和环回模式

2.1.正常模式

可收总线，收不到自己发到总线。

2.2.静默模式

能收到总线，发不出去，也收不到自己发的

2.3环回模式

环回模式自己不发送直接不进USB_LP_CAN1_RX0_IRQHandler；只能收到自己的发送，收不到别人发送，可以发送到总线。

2.4 静默环回模式

静默环回模式，发不到总线，只能收到自己的；自发自收。

3.DMA方式ADC

3.1. 8分频2级深度7通道半完成中断时间

3.2. DMA方式AD采集配置

void ADCx_Init(void)
{

	GPIO_InitTypeDef GPIO_InitStructure;
	DMA_InitTypeDef DMA_InitStructure;
	ADC_InitTypeDef ADC_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;
	
	// �� ADC IO�˿�ʱ��
	RCC_APB2PeriphClockCmd ( RCC_APB2Periph_GPIOA, ENABLE );  //RCC_APB2Periph_GPIOA
	// ��DMAʱ��
	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
	// ��ADCʱ��
	RCC_APB2PeriphClockCmd ( RCC_APB2Periph_ADC1, ENABLE );

	
	// ���� ADC IO ����ģʽ
	GPIO_InitStructure.GPIO_Pin = 	  ADC_PIN1|ADC_PIN2|ADC_PIN3|ADC_PIN4;

	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	
	// ��ʼ�� ADC IO
	GPIO_Init(GPIOA, &GPIO_InitStructure);				
	
	// �� ADC IO�˿�ʱ��
	RCC_APB2PeriphClockCmd ( RCC_APB2Periph_GPIOC, ENABLE );
	
	// ���� ADC IO ����ģʽ
	GPIO_InitStructure.GPIO_Pin = 	  ADC_PIN5|ADC_PIN6;

	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	
	// ��ʼ�� ADC IO
	GPIO_Init(GPIOC, &GPIO_InitStructure);	


    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);	

	
	// ��λDMA������
	DMA_DeInit(DMA1_Channel1);
	
	// ���� DMA ��ʼ���ṹ��
	// �����ַΪ��ADC ���ݼĴ�����ַ
	DMA_InitStructure.DMA_PeripheralBaseAddr = ( u32 ) ( & ( ADC1->DR ) );
	
	// �洢����ַ
	DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_ConvertedValue;
	
	// ����Դ��������
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
	
	// ��������С��Ӧ�õ�������Ŀ�ĵصĴ�С
	DMA_InitStructure.DMA_BufferSize = NOFCHANEL*2;
	
	// ����Ĵ���ֻ��һ������ַ���õ���
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

	// �洢����ַ����
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; 
	
	// �������ݴ�СΪ���֣��������ֽ�
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
	
	// �ڴ����ݴ�СҲΪ���֣����������ݴ�С��ͬ
	DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
	
	// ѭ������ģʽ
	DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;	

	// DMA ����ͨ�����ȼ�Ϊ�ߣ���ʹ��һ��DMAͨ��ʱ�����ȼ����ò�Ӱ��
	DMA_InitStructure.DMA_Priority = DMA_Priority_High;
	
	// ��ֹ�洢�����洢��ģʽ����Ϊ�Ǵ����赽�洢��
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
	
	// ��ʼ��DMA
	DMA_Init(DMA1_Channel1, &DMA_InitStructure);

    DMA_ITConfig(DMA1_Channel1, DMA_IT_HT, ENABLE);   //debug


	
	// ʹ�� DMA ͨ��
	DMA_Cmd(DMA1_Channel1 , ENABLE);
	
	// ADC ģʽ����
	// ֻʹ��һ��ADC�����ڵ�ģʽ
	ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
	
	// ɨ��ģʽ
	ADC_InitStructure.ADC_ScanConvMode = ENABLE ; 

	// ����ת��ģʽ
	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;

	// �����ⲿ����ת��������������
	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;

	// ת������Ҷ���
	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
	
	// ת��ͨ������
	ADC_InitStructure.ADC_NbrOfChannel = NOFCHANEL;	
		
	// ��ʼ��ADC
	ADC_Init(ADC1, &ADC_InitStructure);
	
	// ����ADCʱ�ӣΪPCLK2��8��Ƶ����9MHz
	RCC_ADCCLKConfig(RCC_PCLK2_Div8); 
	
	// ����ADC ͨ����ת��˳��Ͳ���ʱ��
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL1, 1, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL2, 2, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL3, 3, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL4, 4, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL5, 5, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL6, 6, ADC_SampleTime_239Cycles5);
	ADC_RegularChannelConfig(ADC1, ADC_CHANNEL7, 7, ADC_SampleTime_239Cycles5);
	
	// ʹ��ADC DMA ����
	ADC_DMACmd(ADC1, ENABLE);
	
	// ����ADC ������ʼת��
	ADC_Cmd(ADC1, ENABLE);
	
	// ��ʼ��ADC У׼�Ĵ���  
	ADC_ResetCalibration(ADC1);
	// �ȴ�У׼�Ĵ�����ʼ�����
	while(ADC_GetResetCalibrationStatus(ADC1));
	
	// ADC��ʼУ׼
	ADC_StartCalibration(ADC1);
	// �ȴ�У׼���
	while(ADC_GetCalibrationStatus(ADC1));
	
	// ����û�в����ⲿ����������ʹ���������ADCת�� 
	ADC_SoftwareStartConvCmd(ADC1, ENABLE);

	
}

3.3. 中断服务程序

void DMA1_Channel1_IRQHandler(void)
{
	static u8 reverse=0;


		if(DMA_GetFlagStatus(DMA1_FLAG_HT1))
		{
			DMA_ClearITPendingBit(DMA1_FLAG_HT1);
			ADC_Average();

		}
		else
		{
			DMA_ClearITPendingBit(DMA1_FLAG_TE1);	
		}


}

4. 常用代码

开关总中断
__disable_irq();
__enable_irq();

空运转
__nop();

软件复位
void soft_reset(void)
{
__set_FAULTMASK(1);
NVIC_SystemReset();
}

本文地址：https://blog.csdn.net/no1xizhong/article/details/109000661