Rx interrupt not working with MQX 4.1 flexcan example

[hbouch]

Hi,

I'm trying to run the flexcan example of MQX 4.1 for PXN20 on our custom board which has a MPC5668G (automotive version). I've only modified the clock setting of the BSP (InitClock function), the BSP_XOSC_CLOCK and BSP_FMPLL0_CLOCK constant to fit our board.

In the example, I've only modify the bitrate, the CAN_DEVICE (I use Flexcan B) and the CAN clock (I use FLEXCAN_OSC_CLK).

The transmission works fine which tells me that the connection between my PC and the board is not the problem. I can also see that the message I send from my PC is received in the message buffer when I check the registers. The only thing is that the ISR is not called.

Is there something I'm missing here? Is there a configuration to set in user_config.h to enable the interrupt (MQX_USE_INTERRUPT is already set) ?

Thanks,

Hugo

[hbouch]

Actually, I'm not sure if the reception works even if the interruption is not thrown. The proper IMASK bit is set but the corresponding IFLAG bit is not set and when I check in the received data of the message buffer, they are different from what I expected.

I also added a call to the FLEXCAN_Int_enable function after having initialize the ISR (call to FLEXCAN_Install_isr) to set the priority level of the interrupt to something else than 0 but it still doesn't work:

result = FLEXCAN_Int_enable(CAN_DEVICE, RX_mailbox_num);

Any idea?

Thanks

Hugo

[hbouch · Accepted solution]

Ok problem solved.

I was using CANalyser from Vector with a VN1610 interface. I switch to PCAN-view with a Peak CAN interface and it worked...

Sorry!

Hugo

[soledad]

Hello Hugo,

Thank you for your contribution.

Regards

Soledad