CCS: tms5704357 canfd test rx question

Hello Ricky,

If the interrupt is enabled, when the new message is received, you will get interrupt, then read the message from the RX FIFO or RX buffer.

Here is the sequence to enable the interrupt :
// Set the interrupts we want to enable for MCAN
TCAN45x0_CAN_Interrupt_Enable_Register TCAN_CAN_IE = {0}; // Remember to initialize to 0, or you'll get random garbage!
TCAN_CAN_IE.RF0NE = 1; // RX FIFO 0 new message enable
TCAN_CAN_IE.RF1NE = 1; // RX FIFO 1 new message enable
MCAN_SetInterruptEnableRegister(&TCAN_CAN_IE); // Enable the appropriate registers

TCAN45x0_CAN_Interrupt_Line_Select_Register TCAN_CAN_ILS = {0}; //Interrupt Line Select (address = 1058)
TCAN_CAN_ILS.RF0NL = 1; //Rx FIFO 0 New Message Interrupt uses EINT1
TCAN_CAN_ILS.RF1NL = 1; //Rx FIFO 1 New Message Interrupt uses EINT1
MCAN_SetInterruptLineSelectRegister(&TCAN_CAN_ILS);

TCAN45x0_CAN_Interrupt_Line_Enable_Register TCAN_CAN_ILE = {0}; //Interrupt Line Enable (address = 105C)
TCAN_CAN_ILE.EINT0 = 0; //Interrupt line m_can_int0 is disabled
TCAN_CAN_ILE.EINT1 = 1; //Interrupt line m_can_int1 is enabled
MCAN_SetInterruptLineEnableRegister(&TCAN_CAN_ILE);

To receive data after interrupt:
TCAN45x0_CAN_Interrupt_Register MCAN_IR = {0}; // Setup a new MCAN IR object for easy interrupt checking
MCAN_ReadInterruptRegister(&MCAN_IR); // Read the interrupt register

if (MCAN_IR.RF0N) { // If a new message in RX FIFO 0
TCAN45x0_RX_HEADER MsgHeader = {0}; // Initialize to 0 or you'll get garbage
AHB_WRITE_B_FL_32(M_CAN_IR, MCAN_IR_RF0N); // Clear the interrupt bit to release the INT pin.
numBytes = MCAN_ReadNextFIFO( RXFIFO0, &MsgHeader, dataPayload); // This will read the next element in the RX FIFO 0