huo_hu 发表于 2017-12-14 11:07
这个只能自己设计了呀
可否指点下 CAN 发送中断程序
/*---------------------------------------------------------------------------------------
//CAN1 发送数据//
----------------------------------------------------------------------------------------*/
int CAN_tx_msg(CanTxMsg TxMessage)
{
uint8_t TransmitMailbox = 0;
//OS_CPU_SR cpu_sr = 0;
TransmitMailbox = CAN_Transmit(CAN1, TxMessage);
if(CAN_NO_MB == TransmitMailbox)//没有提供空邮箱//
{
printf("tx can fail\r\n");//打印邮箱错误//
return 0;
}
else
{
//OS_ENTER_CRITICAL();
CAN_msg_num[TransmitMailbox] = 1;//被使用的邮箱标记//
// OS_EXIT_CRITICAL();
}
CAN_ITConfig(CAN1, CAN_IT_TME, ENABLE);//被使用的邮箱标记//
return 1;
}
/*---------------------------------------------------------------------------------------
//CAN1 发送中断//
----------------------------------------------------------------------------------------*/
void USB_HP_CAN1_TX_IRQHandler(void)
{
if(CAN_msg_num[0])//发送邮箱0空中断//
{
if(SET == CAN_GetITStatus(CAN1,CAN_IT_RQCP0))//发送邮箱空中断//
{
CAN_ClearITPendingBit(CAN1,CAN_IT_RQCP0);//清除CANx的中断位//
CAN_ITConfig(CAN1, CAN_IT_TME, DISABLE);//发送邮箱空中断//
CAN_msg_num[0] = 0;
}
}
if(CAN_msg_num[1])//发送邮箱1空中断//
{
if(SET == CAN_GetITStatus(CAN1,CAN_IT_RQCP1))//发送邮箱空中断//
{
CAN_ClearITPendingBit(CAN1,CAN_IT_RQCP1);//清除CANx的中断位//
CAN_ITConfig(CAN1, CAN_IT_TME, DISABLE);//启用或禁用指定的CANx中断//
CAN_msg_num[1] = 0;
}
}
if(CAN_msg_num[2])//发送邮箱2空中断//
{
if(SET == CAN_GetITStatus(CAN1,CAN_IT_RQCP2))//发送邮箱空中断//
{
CAN_ClearITPendingBit(CAN1,CAN_IT_RQCP2);//清除CANx的中断位//
CAN_ITConfig(CAN1, CAN_IT_TME, DISABLE);//启用或禁用指定的CANx中断//
CAN_msg_num[2] = 0;
}
}
}
这段程序在网上看到的 怎么感觉3个邮箱和一个用法没区别，每个邮箱空的中断区分不开
#define CAN_IT_RQCP0 CAN_IT_TME
#define CAN_IT_RQCP1 CAN_IT_TME
#define CAN_IT_RQCP2 CAN_IT_TME
都是CAN_IT_TME
stm32/stm8