同一塊板子上的CAN1與CAN2進(jìn)行通信，CAN1在正常模式下可以發(fā)送以及接收，CAN2只能發(fā)送不能接收

您好，下列附件為CAN2的收發(fā)例程，你可以參考下。

CH32V307 CAN2.zip

謝謝

也不行，CAN2只能發(fā)送成功，沒法接收

請問你的CAN2接收問題解決了嗎？

您好，參考2樓附件例程，都是測試過沒有問題的

can2 查詢的方式可以接受，中斷的方式接收不了信息，會不會中斷配置錯誤?

void CAN2_RX0_IRQHandler (void) __attribute__((interrupt("WCH-Interrupt-fast")));

/****************************模塊CAN初始化****************************************/

void Mod_Can_Init(void)

{

CAN_DeInit(CAN2);

?RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

?RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN2, ENABLE);

?GPIO_InitTypeDef GPIO_InitStructure;

?CAN_InitTypeDef? CAN_InitSturctureTypeDef;

?CAN_FilterInitTypeDef CAN_FilterInitStructure;

?NVIC_InitTypeDef? NVIC_InitTypeDefStructure;

?GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;

?GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

?GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

?GPIO_Init(GPIOB, &GPIO_InitStructure);

?GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;

?GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

?GPIO_Init(GPIOB, &GPIO_InitStructure);

?CAN_InitSturctureTypeDef.CAN_TTCM = DISABLE;

?CAN_InitSturctureTypeDef.CAN_TXFP = DISABLE;

?CAN_InitSturctureTypeDef.CAN_ABOM = DISABLE;

?CAN_InitSturctureTypeDef.CAN_AWUM = DISABLE;

?CAN_InitSturctureTypeDef.CAN_NART = ENABLE;

?CAN_InitSturctureTypeDef.CAN_RFLM = DISABLE;

?CAN_InitSturctureTypeDef.CAN_Mode = CAN_Mode_Normal;

?CAN_InitSturctureTypeDef.CAN_SJW =? CAN_SJW_1tq;

?CAN_InitSturctureTypeDef.CAN_BS1 =? CAN_BS1_5tq;

?CAN_InitSturctureTypeDef.CAN_BS2 =? CAN_BS1_3tq;

?CAN_InitSturctureTypeDef.CAN_Prescaler = 64;? ? ? ?

?CAN_Init(CAN2, &CAN_InitSturctureTypeDef);

?CAN_FilterInitStructure.CAN_FilterNumber = 0;? ? ? ? ?// 濾波器組

?CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;

?CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;

?MReceiveID = ModO_Rx_ID;

?CAN_FilterInitStructure.CAN_FilterIdHigh =(MReceiveID<<3)&0xFFFF0000;

?CAN_FilterInitStructure.CAN_FilterIdLow = ((MReceiveID<<3)|CAN_ID_EXT|CAN_RTR_DATA)&0xFFFF;

?CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;

?CAN_FilterInitStructure.CAN_FilterMaskIdLow =? 0x0000;

?CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_FilterFIFO0;

?CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;

?CAN_FilterInit(&CAN_FilterInitStructure);

?NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

?NVIC_InitTypeDefStructure.NVIC_IRQChannel = CAN2_RX0_IRQn;

?NVIC_InitTypeDefStructure.NVIC_IRQChannelPreemptionPriority =? 1;

?NVIC_InitTypeDefStructure.NVIC_IRQChannelSubPriority = 1;

?NVIC_InitTypeDefStructure.NVIC_IRQChannelCmd = ENABLE;

?NVIC_Init(&NVIC_InitTypeDefStructure);

?CAN_ITConfig(CAN2, CAN_IT_FF0|CAN_IT_FF1, ENABLE);

?CAN_ClearITPendingBit(CAN2,CAN_IT_FF0|CAN_IT_FF1);

}

void Mod_Data_Init(void)

{

?ModRxCurT? = 0;

?ModRxCurH = 0;

?Mod.mdSendToAlarm = AlarmGetValFromMod;

?Mod.mdSendToLcd = lcdGetValFromMod;

?Mod.Cmd = 0;

}

/************************can接受中斷************************************/

void CAN2_RX0_IRQHandler(void)

{

?if(CAN_GetITStatus(CAN2, CAN_IT_FF0) == SET)

?{

? ?ModRxCurT++;

? ?if(ModRxCurT>=10)

? ?ModRxCurT = 0;

? ?CAN_ClearITPendingBit(CAN2,CAN_IT_FF0);

? ?printf("Can2中斷觸發(fā)1");

? ?if( CAN_MessagePending( CAN2, CAN_FIFO0 ) == 0)

? ? ?return;

? ? CAN_Receive(CAN2,CAN_FIFO0, &MRxMessage[ModRxCurT]);

? }

? if(CAN_GetITStatus(CAN2, CAN_IT_FF1) == SET )

?{

? ? ModRxCurT++;

? ? if(ModRxCurT>=10)

? ? ?ModRxCurT = 0;

? ? ?CAN_ClearITPendingBit(CAN2,CAN_IT_FF1);

? ? ?printf("Can2中斷觸發(fā)2");

? ? ?if( CAN_MessagePending( CAN2, CAN_FIFO1 ) == 0)

? ? ? ?return;

? ? ?CAN_Receive(CAN2,CAN_FIFO1, &MRxMessage[ModRxCurT]);

?}

}

您好，附件為CAN2中斷接收例程，可以參考一下

CH32V307 CAN2 中斷接收.zip

您好！ 程序已經(jīng)測試，第一次下載正常，能夠打印中斷信息，但是多次下載程序后，CAN2中斷無法接收信息，開啟了程序的can2發(fā)送，通信正常，依然無法中斷接收信息。

您好，正常情況下，第一次下載正常運(yùn)行，后面下載應(yīng)該也不會有問題的，可檢查一下工程以及下載文件是否被改變。相關(guān)問題這邊工程師也已和你溝通過，附件為測試?yán)蹋粲行枰?，可再次下載測試一下

CH32V307 CAN2中斷.zip

您好，我有一個問題，2樓的CAN查詢接收發(fā)送例程中，為什么CAN2的例程都不需要設(shè)置ID過濾呢？我看函數(shù)里面都是對CAN1的寄存器操作。我通過什么來確定，數(shù)據(jù)是接收到CAN_FIFO0還是CAN_FIFO1呢？？