Other Parts Discussed in Thread: C2000WARE
Dear team:
My customer want to change the communication method of routine(ipc_ex2_msgqueue_c28x1.c) into interrupt method. And he made the following modifications:
1, Added interrupt receiving function
//
// IPC ISR for Flag 1
// C28x core sends data with message queue using Flag 0
//
__interrupt void IPC_ISR1()
{
int i;
//IPC_Message_t TxMsg, RxMsg;
bool status = false;
//
// Read the message from the message queue
//
IPC_readMessageFromQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_ADDR_CORRECTION_ENABLE,
&RxMsg, IPC_NONBLOCKING_CALL);
if(RxMsg.command == IPC_CMD_READ_MEM)
{
status = true;
//
// Read and compare data
//
for(i=0; i<RxMsg.dataw1; i++)
{
if((*(uint32_t *)RxMsg.address + i) != i)
status = false;
}
}
//
// Acknowledge the flag
//
IPC_ackFlagRtoL(IPC_CPU1_L_CM_R, IPC_FLAG1);
//
// Acknowledge the PIE interrupt.
//
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP1);
}
2, Enable IPC interrupts
//
IPC_registerInterrupt(IPC_CPU1_L_CM_R, IPC_INT1, IPC_ISR1);
//
Initialize message queue
//
IPC_initMessageQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_INT1, IPC_INT1);
3, Added send loop for testing
while(1)
{
DEVICE_DELAY_US(100000);
IPC_sendMessageToQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_ADDR_CORRECTION_ENABLE,
&TxMsg, IPC_NONBLOCKING_CALL);
DEVICE_DELAY_US(100000);
}
The test result is that the IPC communication between CPU1 and CM cannot be interrupted. What is the problem? Here is the complete code:
// // Included Files // #include "driverlib.h" #include "device.h" // // Defines // #define IPC_CMD_READ_MEM 0x1001 #define IPC_CMD_RESP 0x2001 #define TEST_PASS 0x5555 #define TEST_FAIL 0xAAAA #pragma DATA_SECTION(readData, "MSGRAM_CPU_TO_CM") uint32_t readData[10]; uint32_t pass; IPC_MessageQueue_t messageQueue; IPC_Message_t TxMsg, RxMsg; // // IPC ISR for Flag 1 // C28x core sends data with message queue using Flag 0 // __interrupt void IPC_ISR1() //增加了中断接收函数 { int i; //IPC_Message_t TxMsg, RxMsg; bool status = false; // // Read the message from the message queue // IPC_readMessageFromQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_ADDR_CORRECTION_ENABLE, &RxMsg, IPC_NONBLOCKING_CALL); if(RxMsg.command == IPC_CMD_READ_MEM) { status = true; // // Read and compare data // for(i=0; i<RxMsg.dataw1; i++) { if((*(uint32_t *)RxMsg.address + i) != i) status = false; } } // // Acknowledge the flag // IPC_ackFlagRtoL(IPC_CPU1_L_CM_R, IPC_FLAG1); // // Acknowledge the PIE interrupt. // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP1); } // // Main // void main(void) { int i; // // Initialize device clock and peripherals // Device_init(); // Boot CM core // #ifdef _FLASH Device_bootCM(BOOTMODE_BOOT_TO_FLASH_SECTOR0); #else Device_bootCM(BOOTMODE_BOOT_TO_S0RAM); #endif // Clear any IPC flags if set already // IPC_clearFlagLtoR(IPC_CPU1_L_CM_R, IPC_FLAG_ALL); // // Enable IPC interrupts // IPC_registerInterrupt(IPC_CPU1_L_CM_R, IPC_INT1, IPC_ISR1); //注册了中断 // // Initialize message queue // IPC_initMessageQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_INT1, IPC_INT1); //初始化中断 // // Synchronize both the cores // // // Enable Global Interrupt (INTM) and realtime interrupt (DBGM) // EINT; ERTM; IPC_sync(IPC_CPU1_L_CM_R, IPC_FLAG31); // // Fill in the data to be sent // for(i=0; i<10; i++) { readData[i] = i; } // // Update the message // TxMsg.command = IPC_CMD_READ_MEM; TxMsg.address = (uint32_t)readData; TxMsg.dataw1 = 10; // Using dataw1 as data length TxMsg.dataw2 = 1; // Message identifier // // End of example. Loop forever // while(1) //增加了循环发送用于测试 { DEVICE_DELAY_US(100000); IPC_sendMessageToQueue(IPC_CPU1_L_CM_R, &messageQueue, IPC_ADDR_CORRECTION_ENABLE, &TxMsg, IPC_NONBLOCKING_CALL); DEVICE_DELAY_US(100000); } }
Best regards,
Green