Why S32K3 cannot receive data?

jingfang · ‎01-01-2023

I use CAN Tool send data to demo board in s32k344.

but the message show data is "0"&datalen is "0"?

What could be the problem?

PetrS · ‎01-02-2023

Hi,

there could be many reasons. Be sure module is in normal mode, CAN pins properly initialized and CAN transceiver is active. Did you prepare MB to receive the ID you sent from CAN tool?
You can refer to below example that shows RTD usage
https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K344-FlexCAN-Ip-TX-RX-EnhanceRXFIFO-test...

BR, Petr

PetrS · ‎01-02-2023

Hi,

there could be many reasons. Be sure module is in normal mode, CAN pins properly initialized and CAN transceiver is active. Did you prepare MB to receive the ID you sent from CAN tool?
You can refer to below example that shows RTD usage
https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K344-FlexCAN-Ip-TX-RX-EnhanceRXFIFO-test...

BR, Petr

jingfang · ‎01-02-2023

Thank you for your feedback. I test your code ,it is ok.

I want copy your mex,but show “Invalid thread access”.

Maybe the files written by the configuration tool was locked on the file system.

How do I unlock it?