软件环境 IAR4.42+JLINK 板子是自己参照万利的做得，用的是2.0的固件库
仿真提示是 主机发送错误 不知是什么原因，各位老大帮忙看看
主机程序主程序
int main(void)
{
CanTxMsg TxMessage;
u32 i = 0;
u8 TransmitMailbox;
u8 flag=1,Txflag=0;
RCC_Configuration();
NVIC_Configuration();
GPIO_Configuration();
GPIO_SetBits(GPIOA, GPIO_Pin_3);
do {
TestRx = CAN_Polling();
} while (TestRx == 0);
if(flag == 1)
{
TxMessage.StdId=0x11;
TxMessage.RTR=CAN_RTR_REMOTE;
TxMessage.IDE=CAN_ID_STD;
TxMessage.DLC=2;
TransmitMailbox=CAN_Transmit(&TxMessage);
i = 0;
while((CAN_TransmitStatus(TransmitMailbox) != CANTXOK) && (i != 0xFF))
{
i++;
}
if(i == 0xFF) Txflag = 1;
else Txflag = 0;
}
if(Txflag == 1) GPIO_SetBits(GPIOA, GPIO_Pin_3);
else GPIO_ResetBits(GPIOA, GPIO_Pin_3);
while (1)
{
}
}
从机程序主程序
int main(void)
{
u32 i = 0;
u8 TransmitMailbox;
CanTxMsg TxMessage;
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC Configuration */
NVIC_Configuration();
/* GPIO ports pins Configuration */
GPIO_Configuration();
GPIO_SetBits(GPIOA, GPIO_Pin_3);
do {
TestRx = CAN_Polling();
} while (TestRx == 0);
while (1)
{
if(RxMessage.RTR == CAN_RTR_REMOTE)
{
RxMessage.RTR = CAN_RTR_DATA;
TxMessage.StdId = RxMessage.StdId;
TxMessage.RTR = CAN_RTR_DATA;
TxMessage.IDE = RxMessage.IDE;
TxMessage.DLC = RxMessage.DLC;
TxMessage.Data[0]=0xCA;
TxMessage.Data[1]=0xFE;
TxMessage.Data[2]=0xAA;
TxMessage.Data[3]=0xAA;
TxMessage.Data[4]=0xAA;
TxMessage.Data[5]=0xAA;
TxMessage.Data[6]=0xAA;
TxMessage.Data[7]=0xAA;
TransmitMailbox=CAN_Transmit(&TxMessage);
i = 0;
while((CAN_TransmitStatus(TransmitMailbox) != CANTXOK) && (i != 0xFF))
{
i++;
}
}//if
}//while
}
CAN初始化函数为
TestStatus CAN_Polling(void)
{ u8 Error;
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
/* CAN register init */
CAN_DeInit();
CAN_StructInit(&CAN_InitStructure);
/* CAN cell init */
CAN_InitStructure.CAN_TTCM=DISABLE;
CAN_InitStructure.CAN_ABOM=DISABLE;
CAN_InitStructure.CAN_AWUM=DISABLE;
CAN_InitStructure.CAN_NART=DISABLE;
CAN_InitStructure.CAN_RFLM=DISABLE;
CAN_InitStructure.CAN_TXFP=DISABLE;
CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;
CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1=CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler=5;
Error = CAN_Init(&CAN_InitStructure);
if (Error == 0)
return FAILED;
/* CAN filter init */
CAN_FilterInitStructure.CAN_FilterNumber=0;
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_16bit;
CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=0;
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);
CAN_ITConfig(CAN_IT_FMP0, ENABLE);
return PASSED;
}
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