Issue with CAN Communication on LPC54606J512 - No Data on Oscilloscope

a_s — Mon, 31 Mar 2025 11:46:18 GMT

Hello,
I am currently working on a project using the LPC54606J512 microcontroller on our custom board for CAN communication. To get started, I flashed the CAN Interrupt Transfer Example code from the MCUXpresso SDK, making the necessary changes to the CAN pins and clock configurations to match the LPC54606J512.

However, despite following the example, I am not able to establish communication. After monitoring the CAN signals using PCAN View Software, I am not seeing any data. Furthermore, when I probed the CAN pins on a Digital Storage Oscilloscope, there is no activity observed on the pins.

I would appreciate any guidance on the following:

Are there any additional configurations or initialization steps required for the LPC54606J512 to ensure proper CAN communication?
Could there be any specific settings or overlooked parameters in the code that might be affecting the CAN bus operation?
Any advice on troubleshooting steps to diagnose the issue further?

I would be grateful for any insights or suggestions from those who have worked with CAN communication on the LPC54606J512 or similar controllers.

Best regards,
Akshay

Re: Issue with CAN Communication on LPC54606J512 - No Data on Oscilloscope

Alice_Yang — Tue, 01 Apr 2025 03:17:51 GMT

Hello @a_s

Please confirm that you have configured the related pins and enable correct clocking. You can also use the MCUXpresso configuration tool for the configuration.

Have you connected the LPC54606 to another CAN node? If not, please connect another board with a CAN interface. Since the CAN protocol requires handshake responses, at least two CAN nodes are needed.

Alice

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Issue with CAN Communication on LPC54606J512 - No Data on Oscilloscope

Re: Issue with CAN Communication on LPC54606J512 - No Data on Oscilloscope