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How to generate a CAN receive interrupt in simulator?

Alexander Sorockin

Hi,

I'm debugging an interrupt service routine. I simulate a CAN message and expect the simulator to generate a receive interrupt, but this doesn't happen. I also tried this on a Keil code example, but the result was the same, so I assume the problem isn't in my code. Here's what I did:

1) Load the project Keil\ARM\Boards\Keil\MCB2300\CAN\CAN.uvproj in the IDE.
2) Add the following code to CAN_Simulate.ini:

func void CAN_transmit(void) {

        CAN1ID = 0xC7;
        CAN1L = 7;
        CAN1B0 = 0x07;
        CAN1B1 = 0xD4;
        CAN1B2 = 0x0C;
        CAN1B3 = 0x1F;
        CAN1B4 = 0x0A;
        CAN1B5 = 0x01;
        CAN1B6 = 0x00;
        CAN1B7 = 0x00;
        CAN1IN = 1;
}

define button "Send CAN message", "CAN_transmit();"

3) Compile.
4) Set a breakpoint in CAN.c after the line:

if (CAN1->GSR & (1 << 0)) {                    /* CAN Controller #1 meassage is received */

5) Run.
6) Click on the "Send CAN message" button.
7) See a received message in the "CAN communication" window, but no receive interrupt is generated.

At the same time transmit interrupts do get generated. What am doing wrong?

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