LP-AM263: Problem with mcan_external_read_write, stuck in SemaphoreP_pend

Charlie Lin

Part Number: LP-AM263

Hi,my board is LP-AM263

When I try mcan_external_read_write example, I stuck in "SemaphoreP_pend(&gMcanTxDoneSem, SystemP_WAIT_FOREVER);"

SDK:mcu_plus_sdk_am263x_08_06_00_34

MCAN_writeMsgRam(gMcanBaseAddr, MCAN_MEM_TYPE_BUF, bufNum, &txMsg);

        /* Add request for transmission, This function will trigger transmission */
        status = MCAN_txBufAddReq(gMcanBaseAddr, bufNum);
        DebugP_assert(status == CSL_PASS);
        DebugP_log("TX send\r\n");

        /* Wait for Tx completion */
        SemaphoreP_pend(&gMcanTxDoneSem, SystemP_WAIT_FOREVER);
        DebugP_log("pass\r\n");

Console output

I also don't recieve any CAN message on other deivce

over 2 years ago

0 Charlie Lin over 2 years ago

Prodigy 20 points

Can I get respond ASAP?

0 Aakash Kedia over 2 years ago in reply to Charlie Lin

TI__Mastermind 26145 points

Hi Charlie Lin,

Are you following the example documentation mentioned here correctly - https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/latest/exports/docs/api_guide_am263x/EXAMPLES_DRIVERS_MCAN_EXTERNAL_READ_WRITE.html

Best Regards,
Aakash

0 Charlie Lin over 2 years ago in reply to Aakash Kedia

Prodigy 20 points

Hi Aakash,

Thanks for replying,

I followed the instructions but I don't get any CAN FD message from LP-AM263

It seems board even don't send the message out

As my said, the program even don't pass the sending CAN FD message stage

0 Aakash Kedia over 2 years ago in reply to Charlie Lin

TI__Mastermind 26145 points

Hi Charlie,

What is the CAN-FD receiver you are using ? Do you have any logs on the Logic Analyzer or the Oscilloscope or do you mean the CAN Transceiver is not pushing out any data ?

Best Regards,
Aakash

0 Charlie Lin over 2 years ago in reply to Aakash Kedia

Prodigy 20 points

Hi Aakash,

I used this for CAN-FD , a CAN-FD receiver&transmiter intergrated board

https://www.waveshare.com/wiki/2-CH_CAN_FD_HAT#Arduino_example

I have tested this board is fine, we can recieve other CAN FD message via this board

The board is configured to the example arbitration bitrate and data bitrate which is 1Mbps and 5Mbps

We don't have Logic Analyzer or Oscilloscope

0 Aakash Kedia over 2 years ago in reply to Charlie Lin

TI__Mastermind 26145 points

Hi Charlie,

We have tested this example internally and this is functional. Do you have any other data points where you can confirm if the data is not coming out of the launchpad apart from the above mentioned ones ?

Best Regards,
Aakash

0 Charlie Lin over 2 years ago in reply to Aakash Kedia

Prodigy 20 points

Hi Aakash,

I am working on it and I want to ask how App_mcanIntrISR will be called in this example?

+1 Aakash Kedia over 2 years ago in reply to Charlie Lin

TI__Mastermind 26145 points

Hi Charlie,

The function is configured as interrupt.

Best Regards,

Aakash

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LP-AM263: Problem with mcan_external_read_write, stuck in SemaphoreP_pend