S32KのトピックRe: S32K3 CAN transceiver problem

S32K3 CAN transceiver problem

Voledi — Mon, 30 Dec 2024 10:15:51 GMT

Hi NXP team,

Can i ask why there is a difference between calling and not calling setupCanXCVR()
After calling this function, my CAN_TX pin no longer emits Digital signal

Call setupCanXCVR()

Notcall setupCanXCVR()

Why does this difference result in the function FlexCAN_Ip_Send(INST_FLEXCAN_0, TX_MB_IDX, &tx_info, MSG_ID, (uint8 *)&dummyData); not working properly?

Re: S32K3 CAN transceiver problem

quangvuanh — Mon, 30 Dec 2024 10:28:04 GMT

Hi @Voledi can you please let me know what hardware and software package you are using?

Re: S32K3 CAN transceiver problem

Voledi — Tue, 31 Dec 2024 05:32:18 GMT

i'm using S32K3X4-Q172 EVB, and the transceiver used is TJA1153. Base on Example S32K344 FlexCAN_Ip TX/RX/EnhanceRXFIFO test S32DS3.4 RTD200 - NXP Community

Re: S32K3 CAN transceiver problem

Voledi — Tue, 31 Dec 2024 05:35:28 GMT

Software: S32DS 3.6 and RTD 5.0.0

Re: S32K3 CAN transceiver problem

Senlent — Tue, 31 Dec 2024 06:00:33 GMT

Hi@Voledi

This code is used to configure the TJA1153 CAN transceiver. If the transceiver you are using is not TJA1153, this code is completely unnecessary.

https://www.nxp.com/products/TJA1153

Re: S32K3 CAN transceiver problem

quangvuanh — Tue, 31 Dec 2024 10:56:01 GMT

Hi, this is a known issue of TJA1153 that we have to clear the vanilla configuration of before reconfiguring the device, it requires some time constrains.

I migrated the example to the latest version of the RTD, with some modifications, please try and let me know if it could resolve your problem.