LAUNCHXL-F28379D: CAN通信在CPU2中进行通信的问题

谢谢这些天您的回复，问题解决了，问题在于初始化那里，CAN时钟的初始化应该在CPU2中，代码附上，以便后面的人可以少走一些弯路。

CPU1:

#include "driverlib.h"
#include "device.h"
#include "inc/hw_ipc.h"

 void Example_Device_init(void);

 uint16_t ipcFlag17 = 17U;
void main(void)
{
    Example_Device_init();
    Device_initGPIO();


    GPIO_setPinConfig(GPIO_12_CANTXB);
    GPIO_setPinConfig(GPIO_17_CANRXB);

    HWREG(IPC_BASE + IPC_O_SET) = 1UL << ipcFlag17;


    Interrupt_initModule();
    Interrupt_initVectorTable();
    //
    // Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
    //
    EINT;
    ERTM;
   
    while(1)
    {
    }
}
void Example_Device_init(void)
{
    //
      // Disable the watchdog
      //
      SysCtl_disableWatchdog();

  #ifdef _FLASH
      //
      // Copy time critical code and flash setup code to RAM. This includes the
      // following functions: InitFlash();
      //
      // The RamfuncsLoadStart, RamfuncsLoadSize, and RamfuncsRunStart symbols
      // are created by the linker. Refer to the device .cmd file.
      //
      memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

      //
      // Call Flash Initialization to setup flash waitstates. This function must
      // reside in RAM.
      //
      Flash_initModule(FLASH0CTRL_BASE, FLASH0ECC_BASE, DEVICE_FLASH_WAITSTATES);
  #endif

      //
      // Set up PLL control and clock dividers
      //
      SysCtl_setClock(DEVICE_SETCLOCK_CFG);

 
      SysCtl_setLowSpeedClock(SYSCTL_LSPCLK_PRESCALE_4);


      ASSERT(SysCtl_getClock(DEVICE_OSCSRC_FREQ) == DEVICE_SYSCLK_FREQ);
      ASSERT(SysCtl_getLowSpeedClock(DEVICE_OSCSRC_FREQ) == DEVICE_LSPCLK_FREQ);


      SysCtl_selectCPUForPeripheral(SYSCTL_CPUSEL8_CAN, 2, SYSCTL_CPUSEL_CPU2);
}

CPU2:

#include "driverlib.h"
#include "device.h"
#include "inc/hw_ipc.h"

#define MSG_DATA_LENGTH    8
#define TX_MSG_OBJ_ID      1

uint16_t txMsgData[8];
uint16_t ipcFlag17 = 17U;

void main(void)
{
    Example_Device_init();

    Interrupt_initModule();
    Interrupt_initVectorTable();

    while(!(HWREG(IPC_BASE + IPC_O_STS) & (1UL << ipcFlag17)))
                        {
                        }

       HWREG(IPC_BASE + IPC_O_ACK) = 1UL << ipcFlag17;

   CAN_initModule(CANB_BASE);
   CAN_initRAM(CANB_BASE);
   //
   // Set up the CAN bus bit rate to 500kHz for each module
   // Refer to the Driver Library User Guide for information on how to set
   // tighter timing control. Additionally, consult the device data sheet
   // for more information about the CAN module clocking.
   //
   CAN_setBitRate(CANB_BASE, 200000000, 500000, 20);

     //
     // Initialize the transmit message object used for sending CAN messages.
     // Message Object Parameters:
     //      CAN Module: A
     //      Message Object ID Number: 1
     //      Message Identifier: 0x95555555
     //      Message Frame: Extended
     //      Message Type: Transmit
     //      Message ID Mask: 0x0
     //      Message Object Flags: None
     //      Message Data Length: 4 Bytes
     //
     CAN_setupMessageObject(CANB_BASE, TX_MSG_OBJ_ID, 0x1,
                                   CAN_MSG_FRAME_STD, CAN_MSG_OBJ_TYPE_TX, 1,
                                   CAN_MSG_OBJ_NO_FLAGS, MSG_DATA_LENGTH);


     // Initialize the transmit message object data buffer to be sent
     //
     txMsgData[0] = 0x01;
     txMsgData[1] = 0x23;
     txMsgData[2] = 0x45;
     txMsgData[3] = 0x67;
     txMsgData[4] = 0x89;
     txMsgData[5] = 0xAB;
     txMsgData[6] = 0xCD;
     txMsgData[7] = 0xEF;

     //
     // Start CAN module A operations
     //
    CAN_startModule(CANB_BASE);
    //
    // Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
    //
    EINT;
    ERTM;

    //
    // Loop Forever
    //
    for(;;)
    {
       CAN_sendMessage(CANB_BASE, TX_MSG_OBJ_ID, MSG_DATA_LENGTH, txMsgData);
       DEVICE_DELAY_US(1000000);
    }
}
void Example_Device_init(void)
{
    //
      // Disable the watchdog
      //
      SysCtl_disableWatchdog();

  #ifdef _FLASH
      //
      // Copy time critical code and flash setup code to RAM. This includes the
      // following functions: InitFlash();
      //
      // The RamfuncsLoadStart, RamfuncsLoadSize, and RamfuncsRunStart symbols
      // are created by the linker. Refer to the device .cmd file.
      //
      memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

      //
      // Call Flash Initialization to setup flash waitstates. This function must
      // reside in RAM.
      //
      Flash_initModule(FLASH0CTRL_BASE, FLASH0ECC_BASE, DEVICE_FLASH_WAITSTATES);
  #endif


      SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_CANB);
}