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我使用的是官方例程:ipc_ex2_msgqueue_c28x1.c和ipc_ex2_msgqueue_cm.c,在此基础上进行修改:
CPU1:
// // Included Files // #include "driverlib.h" #include "device.h" #include "stdio.h" #include "string.h" #include "stdlib.h" // // Defines // #define IPC_CMD_READ_MEM 0x1001 #define IPC_CMD_RESP 0x2001 #define TEST_PASS 0x5555 #define TEST_FAIL 0xAAAA #define DATA_SUM 10 #pragma DATA_SECTION(cpu1_sendData, "MSGRAM_CPU_TO_CM") uint32_t cpu1_readData[DATA_SUM]; uint32_t cpu1_sendData[DATA_SUM]; uint32_t pass; IPC_MessageQueue_t messageQueue0; IPC_Message_t TxMsg0, RxMsg0; IPC_MessageQueue_t messageQueue1; IPC_Message_t TxMsg1, RxMsg1; // // // __interrupt void IPC_ISR0() { int i; bool status = false; // // Read the message from the message queue // IPC_readMessageFromQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_ADDR_CORRECTION_ENABLE, &RxMsg0, IPC_NONBLOCKING_CALL); if(RxMsg0.command == IPC_CMD_READ_MEM) { status = true; // // Read and compare data // for(i=0; i<RxMsg0.dataw1; i++) { if(i < DATA_SUM) { cpu1_readData[i] = *((uint32_t *)RxMsg0.address + i); } if(*((uint32_t *)RxMsg0.address + i) != i) status = false; } } // // Send response message // TxMsg0.command = IPC_CMD_RESP; TxMsg0.address = 0; // Not used TxMsg0.dataw1 = status ? TEST_PASS : TEST_FAIL; TxMsg0.dataw2 = RxMsg0.dataw2; // Use the message identifier from the received message IPC_sendMessageToQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_ADDR_CORRECTION_DISABLE, &TxMsg0, IPC_NONBLOCKING_CALL); // // Acknowledge the flag // IPC_ackFlagRtoL(IPC_CPU1_L_CM_R, IPC_FLAG0); // // Acknowledge the PIE interrupt. // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP11); } // // 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 // // Initialize PIE and clear PIE registers. Disables CPU interrupts. // Interrupt_initModule(); // // Initialize the PIE vector table with pointers to the shell Interrupt // Service Routines (ISR). // Interrupt_initVectorTable(); // // Clear any IPC flags if set already // IPC_clearFlagLtoR(IPC_CPU1_L_CM_R, IPC_FLAG_ALL); /*******************************************cpu1 send cm read******************************************************************/ // // Initialize message queue // IPC_initMessageQueue(IPC_CPU1_L_CM_R, &messageQueue1, IPC_INT1, IPC_INT1); /*******************************************cpu1 read cm send******************************************************************/ // // Enable IPC interrupts // IPC_registerInterrupt(IPC_CPU1_L_CM_R, IPC_INT0, IPC_ISR0); // // Initialize message queue // IPC_initMessageQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_INT0, IPC_INT0); // // Synchronize both the cores // IPC_sync(IPC_CPU1_L_CM_R, IPC_FLAG31); // // Enable Global Interrupt (INTM) and realtime interrupt (DBGM) // EINT; ERTM; memset(cpu1_readData,0,sizeof(cpu1_readData)); memset(cpu1_sendData,0,sizeof(cpu1_sendData)); // // End of example. Loop forever // while(1); { // // Fill in the data to be sent // for(i=0; i<DATA_SUM; i++) { cpu1_sendData[i] = 0x5a5a1234 + 2 * i; } // // Update the message // TxMsg1.command = IPC_CMD_READ_MEM; TxMsg1.address = (uint32_t)cpu1_sendData; TxMsg1.dataw1 = DATA_SUM; // Using dataw1 as data length TxMsg1.dataw2 = 1; // Message identifier // // Send message to the queue // Since C28x and CM does not share the same address space for shared RAM, // ADDRESS_CORRECTION is enabled // IPC_sendMessageToQueue(IPC_CPU1_L_CM_R, &messageQueue1, IPC_ADDR_CORRECTION_ENABLE, &TxMsg1, IPC_BLOCKING_CALL); // // Read message from the queue // Return message from CM does not use the address field, hence // ADDRESS_COREECTION feature is not used // IPC_readMessageFromQueue(IPC_CPU1_L_CM_R, &messageQueue1, IPC_ADDR_CORRECTION_DISABLE, &RxMsg1, IPC_BLOCKING_CALL); if((RxMsg1.command == IPC_CMD_RESP) && (RxMsg1.dataw1 == TEST_PASS) && (RxMsg1.dataw2 == 1)) pass = 1; else pass = 0; } }
CM:
// // Included Files // #include "cm.h" #include "ipc.h" // // Defines // #define IPC_CMD_READ_MEM 0x1001 #define IPC_CMD_RESP 0x2001 #define TEST_PASS 0x5555 #define TEST_FAIL 0xAAAA #define DATA_SUM 10 uint32_t cm_readData[DATA_SUM]; uint32_t cm_sendData[DATA_SUM]; uint32_t pass; IPC_MessageQueue_t messageQueue0; IPC_Message_t TxMsg0, RxMsg0; IPC_MessageQueue_t messageQueue1; IPC_Message_t TxMsg1, RxMsg1; // // IPC ISR for Flag 1 // C28x core sends data with message queue using Flag 0 // __interrupt void IPC_ISR1() { int i; bool status = false; // // Read the message from the message queue // IPC_readMessageFromQueue(IPC_CM_L_CPU1_R, &messageQueue1, IPC_ADDR_CORRECTION_ENABLE, &RxMsg1, IPC_NONBLOCKING_CALL); if(RxMsg1.command == IPC_CMD_READ_MEM) { status = true; // // Read and compare data // for(i=0; i<RxMsg1.dataw1; i++) { if(i < DATA_SUM) { cm_readData[i] = *((uint32_t *)RxMsg1.address + i); } if(*((uint32_t *)RxMsg1.address + i) != i) status = false; } } // // Send response message // TxMsg1.command = IPC_CMD_RESP; TxMsg1.address = 0; // Not used TxMsg1.dataw1 = status ? TEST_PASS : TEST_FAIL; TxMsg1.dataw2 = RxMsg1.dataw2; // Use the message identifier from the received message IPC_sendMessageToQueue(IPC_CM_L_CPU1_R, &messageQueue1, IPC_ADDR_CORRECTION_DISABLE, &TxMsg1, IPC_NONBLOCKING_CALL); // // Acknowledge the flag // IPC_ackFlagRtoL(IPC_CM_L_CPU1_R, IPC_FLAG1); } // // Main // void main(void) { uint32_t i = 0; // // Initialize device clock and peripherals // CM_init(); // // Clear any IPC flags if set already // IPC_clearFlagLtoR(IPC_CM_L_CPU1_R, IPC_FLAG_ALL); /*******************************************cpu1 send cm read******************************************************************/ // // Enable IPC interrupts // IPC_registerInterrupt(IPC_CM_L_CPU1_R, IPC_INT1, IPC_ISR1); // // Initialize message queue // IPC_initMessageQueue(IPC_CM_L_CPU1_R, &messageQueue1, IPC_INT1, IPC_INT1); /*******************************************cpu1 read cm send******************************************************************/ // // Initialize message queue // IPC_initMessageQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_INT0, IPC_INT0); // // Synchronize both the cores. // IPC_sync(IPC_CM_L_CPU1_R, IPC_FLAG31); // // Loop forever. Wait for IPC interrupt // while(1) { // // Fill in the data to be sent // for(i=0; i<DATA_SUM; i++) { cm_sendData[i] = 0x5a5a1234 + 2 * i; } // // Update the message // TxMsg0.command = IPC_CMD_READ_MEM; TxMsg0.address = (uint32_t)cm_sendData; TxMsg0.dataw1 = DATA_SUM; // Using dataw1 as data length TxMsg0.dataw2 = 1; // Message identifier // // Send message to the queue // Since C28x and CM does not share the same address space for shared RAM, // ADDRESS_CORRECTION is enabled // IPC_sendMessageToQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_ADDR_CORRECTION_ENABLE, &TxMsg0, IPC_BLOCKING_CALL); // // Read message from the queue // Return message from CM does not use the address field, hence // ADDRESS_COREECTION feature is not used // IPC_readMessageFromQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_ADDR_CORRECTION_DISABLE, &RxMsg0, IPC_BLOCKING_CALL); if((RxMsg0.command == IPC_CMD_RESP) && (RxMsg0.dataw1 == TEST_PASS) && (RxMsg0.dataw2 == 1)) pass = 1; else pass = 0; } } // // End of File //
调试:
好的,麻烦您了。
修改位置:
1、CPU1中增加一个通道,设置接收中断函数,原先的通道停止发送(while(1);)。
/*******************************************cpu1 read cm send******************************************************************/ // // Enable IPC interrupts // IPC_registerInterrupt(IPC_CPU1_L_CM_R, IPC_INT0, IPC_ISR0); // // Initialize message queue // IPC_initMessageQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_INT0, IPC_INT0);
__interrupt void IPC_ISR0() { int i; bool status = false; // // Read the message from the message queue // IPC_readMessageFromQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_ADDR_CORRECTION_ENABLE, &RxMsg0, IPC_NONBLOCKING_CALL); if(RxMsg0.command == IPC_CMD_READ_MEM) { status = true; // // Read and compare data // for(i=0; i<RxMsg0.dataw1; i++) { if(i < DATA_SUM) { cpu1_readData[i] = *((uint32_t *)RxMsg0.address + i); } if(*((uint32_t *)RxMsg0.address + i) != i) status = false; } } // // Send response message // TxMsg0.command = IPC_CMD_RESP; TxMsg0.address = 0; // Not used TxMsg0.dataw1 = status ? TEST_PASS : TEST_FAIL; TxMsg0.dataw2 = RxMsg0.dataw2; // Use the message identifier from the received message IPC_sendMessageToQueue(IPC_CPU1_L_CM_R, &messageQueue0, IPC_ADDR_CORRECTION_ENABLE, &TxMsg0, IPC_NONBLOCKING_CALL); // // Acknowledge the flag // IPC_ackFlagRtoL(IPC_CPU1_L_CM_R, IPC_FLAG0); // // Acknowledge the PIE interrupt. // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP11); }
2、在M4中,增加新的通道,设置发送
/*******************************************cpu1 read cm send******************************************************************/ // // Initialize message queue // IPC_initMessageQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_INT0, IPC_INT0);
while(1) { // // Fill in the data to be sent // for(i=0; i<DATA_SUM; i++) { cm_sendData[i] = 0x5a5a1234 + 2 * i; } // // Update the message // TxMsg0.command = IPC_CMD_READ_MEM; TxMsg0.address = (uint32_t)cm_sendData; TxMsg0.dataw1 = DATA_SUM; // Using dataw1 as data length TxMsg0.dataw2 = 1; // Message identifier // // Send message to the queue // Since C28x and CM does not share the same address space for shared RAM, // ADDRESS_CORRECTION is enabled // IPC_sendMessageToQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_ADDR_CORRECTION_ENABLE, &TxMsg0, IPC_BLOCKING_CALL); // // Read message from the queue // Return message from CM does not use the address field, hence // ADDRESS_COREECTION feature is not used // IPC_readMessageFromQueue(IPC_CM_L_CPU1_R, &messageQueue0, IPC_ADDR_CORRECTION_DISABLE, &RxMsg0, IPC_BLOCKING_CALL); if((RxMsg0.command == IPC_CMD_RESP) && (RxMsg0.dataw1 == TEST_PASS) && (RxMsg0.dataw2 == 1)) pass = 1; else pass = 0; }
IPC 驱动程序函数中的 IPC_ADDR_CORRECTION_ENABLE 功能仅在地址在 IPC MSGRAM 中时才起作用。 例如,如果 CPU1 正在向 CM 发送数据,则地址应在 CPU1_TO_CM_MSGRAM 的地址范围内。
你这边需要确认一下上述这点是否满足?
如果不使用地址参数,或者用于发送不在 CPU1-CM IPC MSGRAM 范围内的地址,请禁用 ADDRESS_CORRECTION 功能。
IPC_sendMessageToQueue(.., .., IPC_ADDR_CORRECTION_DISABLE, .. , ..);
IPC_readMessageFromQueue(.., .., IPC_ADDR_CORRECTION_DISABLE, .. , ..);
禁用 ADDRESS_CORRECTION的前提是如果不使用地址参数,或者用于发送不在 CPU1-CM IPC MSGRAM 范围内的地址,这样就可以减少空间使用