Part Number: TMS320F28377D Tool/software: Hi all, I need a help to create a Hwi/Swi module to handle CAN-Bus interrupts. My code looks like this: Void hwiCanHandler(xdc_UArg arg) { // // Acknowledge this interrupt located in group 9 // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9); CanHwiCounter++; Swi_post(Can_swi); } void CAN_INIT(uint32_t canX_base, uint32_t device_sysCLK_freq, uint32_t can_bitrate) { Hwi_Params hwiParams; Swi_Params swiParams; Error_Block eb; uint32_t interruptNumber; Error_init(&eb); Hwi_Params_init(&hwiParams); Swi_Params_init(&swiParams); // pass CAN module base address to interrupt handler hwiParams.arg = canX_base; hwiParams.enableInt = 1; swiParams.priority = 1; swiParams.arg0 = canX_base; // Function to turn on CAN peripherals, enabling reads and writes to the // CANs' registers. if(canX_base == CANA_BASE) { SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_CANA); // According to TI documentation: INT_CANA0 ==> id 100, INT_CANA1 ==> id 101 interruptNumber = 100; } else if( canX_base == CANB_BASE) { SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_CANB); // According to TI documentation: INT_CANB0 ==> id 102, INT_CANA1 ==> id 103 interruptNumber = 102; } else { ASSERT(0); } // // Initialize the CAN controller // // Puts the module in Initialization mode, Disables the parity function // Initializes the MBX RAM, Initiates a S/W reset of the module // Seeks write-access to configuration registers. // CAN_initModule(canX_base); // // Set up the CAN bus bit rate up to 1 Mbps // 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(canX_base, device_sysCLK_freq, can_bitrate, 16); // // Enable interrupts on the CAN peripheral. // Enables Interrupt line 0, Error & Status Change interrupts in CAN_CTL // register. // CAN_enableInterrupt(canX_base, CAN_INT_IE0 | CAN_INT_ERROR | CAN_INT_STATUS); // Enable the CAN interrupt signal CAN_enableInterrupt(canX_base, CAN_INT_IE0 | CAN_INT_ERROR | CAN_INT_STATUS); if(canX_base == CANA_BASE) { Interrupt_enable(INT_CANA0); } else { Interrupt_enable(INT_CANB0); } // create SYS/BIOS HWI Can_hwi = Hwi_create(interruptNumber, hwiCanHandler, &hwiParams, &eb); if (Can_hwi == NULL) { System_abort("Hwi create failed"); } Error_init(&eb); Can_swi = Swi_create(swiCanHandler, &swiParams, &eb); if (Can_swi == NULL) { System_abort("Swi create failed"); } Error_init(&eb); Can_event = Event_create(NULL, &eb); if (Can_event == NULL) { System_abort("Event create failed"); } // // Start CAN module operations // CAN_startModule(canX_base); } I have create a messagebox for the CAN interface. I send CAN messages on the bus and I can see that the messagebox are ready, but the interrupt routine is newer called. What I am doing wrong / missing in my code? Thanks for any help.
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