TI中文支持网Part Number:TMS570LS3137Other Parts Discussed in Thread:HALCOGEN
项目代码使用HALCOGEN生成，参考example_canCommunication.c文件，版本04.07.01，CCS版本Version: 8.3.1.00004,配置如下：
调用代码如下：
外部CAN工具无法接收到数据，且第二次调用canTransmit函数，直接失败返回
canInit代码如下：
void canInit(void)
{
/* USER CODE BEGIN (4) */
/* USER CODE END *//** @b Initialize @b CAN1: *//** - Setup control register*- Disable automatic wakeup on bus activity*- Local power down mode disabled*- Disable DMA request lines*- Enable global Interrupt Line 0 and 1*- Disable debug mode*- Release from software reset*- Enable/Disable parity or ECC*- Enable/Disable auto bus on timer*- Setup message completion before entering debug state*- Setup normal operation mode*- Request write access to the configuration registers*- Setup automatic retransmission of messages*- Disable error interrupts*- Disable status interrupts*- Enter initialization mode*/canREG1->CTL = (uint32)0x00000000U| (uint32)0x00000000U| (uint32)((uint32)0x00000005U << 10U)| (uint32)0x00020043U;/** - Clear all pending error flags and reset current status */canREG1->ES |= 0xFFFFFFFFU;/** - Assign interrupt level for messages */canREG1->INTMUXx[0U] = (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U;canREG1->INTMUXx[1U] = (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U| (uint32)0x00000000U;/** - Setup auto bus on timer period */canREG1->ABOTR = (uint32)0U;/** - Initialize message 1*- Wait until IF1 is ready for use*- Set message mask*- Set message control word*- Set message arbitration*- Set IF1 control byte*- Set IF1 message number*//*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */while ((canREG1->IF1STAT & 0x80U) ==0x80U){} /* Wait */canREG1->IF1MSK = 0xC0000000U | (uint32)((uint32)((uint32)0x00000000U & (uint32)0x1FFFFFFFU) << (uint32)0U);canREG1->IF1ARB = (uint32)0x80000000U | (uint32)0x40000000U | (uint32)0x20000000U | (uint32)((uint32)((uint32)1U & (uint32)0x1FFFFFFFU) << (uint32)0U);canREG1->IF1MCTL = 0x00001000U | (uint32)0x00000000U | (uint32)0x00000000U | (uint32)0x00000000U | (uint32)8U;canREG1->IF1CMD = (uint8) 0xF8U;canREG1->IF1NO= 1U;/** - Initialize message 2*- Wait until IF2 is ready for use*- Set message mask*- Set message control word*- Set message arbitration*- Set IF2 control byte*- Set IF2 message number*//*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */while ((canREG1->IF2STAT & 0x80U) ==0x80U){} /* Wait */canREG1->IF2MSK = 0xC0000000U | (uint32)((uint32)((uint32)0x00000000U & (uint32)0x1FFFFFFFU) << (uint32)0U);canREG1->IF2ARB = (uint32)0x80000000U | (uint32)0x40000000U | (uint32)0x00000000U | (uint32)((uint32)((uint32)2U & (uint32)0x1FFFFFFFU) << (uint32)0U);canREG1->IF2MCTL = 0x00001000U | (uint32)0x00000000U | (uint32)0x00000000U | (uint32)0x00000000U | (uint32)8U;canREG1->IF2CMD = (uint8) 0xF8U;canREG1->IF2NO= 2U;/** - Setup IF1 for data transmission*- Wait until IF1 is ready for use*- Set IF1 control byte*//*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */while ((canREG1->IF1STAT & 0x80U) ==0x80U){} /* Wait */canREG1->IF1CMD = 0x87U;/** - Setup IF2 for reading data*- Wait until IF1 is ready for use*- Set IF1 control byte*//*SAFETYMCUSW 28 D MR:NA <APPROVED> "Potentially infinite loop found - Hardware Status check for execution sequence" */while ((canREG1->IF2STAT & 0x80U) ==0x80U){} /* Wait */canREG1->IF2CMD = 0x17U;/** - Setup bit timing*- Setup baud rate prescaler extension*- Setup TSeg2*- Setup TSeg1*- Setup sample jump width*- Setup baud rate prescaler*/canREG1->BTR = (uint32)((uint32)0U << 16U) |(uint32)((uint32)(3U - 1U) << 12U) |(uint32)((uint32)((5U + 3U) - 1U) << 8U) |(uint32)((uint32)(3U - 1U) << 6U) |(uint32)14U;/** - CAN1 Port output values */canREG1->TIOC = (uint32)((uint32)1U << 18U )| (uint32)((uint32)0U << 17U )| (uint32)((uint32)0U << 16U )| (uint32)((uint32)1U << 3U )| (uint32)((uint32)1U << 2U )| (uint32)((uint32)1U << 1U );canREG1->RIOC = (uint32)((uint32)1U << 18U )| (uint32)((uint32)0U << 17U )| (uint32)((uint32)0U << 16U )| (uint32)((uint32)1U << 3U )| (uint32)((uint32)0U << 2U )| (uint32)((uint32)0U <<1U );/** - Leave configuration and initialization mode */canREG1->CTL &= ~(uint32)(0x00000041U);/**@note This function has to be called before the driver can be used.\n*This function has to be executed in privileged mode.\n*/
/* USER CODE BEGIN (5) */
/* USER CODE END */
}
Ben Qin：
你好，我查看下相关资料后回复您。
,
Ben Qin：
你好，你注意到了这几个步骤吗？
,
x x：
是的，已经注意到，例程是使用CAN1发CAN2收，我的工程只是CAN1发送给外部CAN工具，然后在接收外部CAN工具发送的数据，下图是我的HALCOGEN配置
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x x：
图中是其他配置
这是调用代码
int main(void) { /* USER CODE BEGIN (3) *///dccInit();canInit();canTransmit(canREG1, canMESSAGE_BOX1, tx_data); //外部工具接收不到CAN数据//canTransmit(canREG1, canMESSAGE_BOX1, tx_data);// canTransmit(canREG1, canMESSAGE_BOX1, tx_data);//canTransmit(canREG1, canMESSAGE_BOX1, tx_data);while(1){while(!canIsRxMessageArrived(canREG1, canMESSAGE_BOX2));canGetData(canREG1, canMESSAGE_BOX2, rx_data);/* receive on can1*/canTransmit(canREG1, canMESSAGE_BOX1, rx_data);} /* USER CODE END */return 0; }
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Ben Qin：
我将咨询相关工程师，一旦有回复会立即回复您。
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Ben Qin：
感谢您对TI产品的关注！为更加有效地解决您的问题，我们建议您将问题发布在E2E英文技术论坛上e2e.ti.com/…/arm-based-microcontrollers-forum，将由资深的英文论坛工程师为您提供帮助。
