topic S32K144 I2C Example stopped with RTOS in S32K

S32K144 I2C Example stopped with RTOS

cheoljin — Tue, 28 Sep 2021 11:48:34 GMT

Hello, I am using S32K144 EVB board and S32DS3.4 to develop a program to read data through the I2C.

But I2C example do not work after adding RTOS as below.

IDE Version : S32DS3.4

Example : lpi2c_master_s32k144 + RTOS

Target : S32K144 EVB

The other thing is below wornning occurred when I start debugging.

Warning 17927. Target MCU mismatch. Download performance limited. See http://www.pemicro.com/opensda/pe_tools.cfm for information on debugging external processors.
Target has been RESET and is active.
CMD>CM C:\NXP\S32DS.3.4\eclipse\plugins\com.pemicro.debug.gdbjtag.pne.expansion_5.1.0.202109011413\win32\gdi\P&E\supportFiles_ARM\NXP\S32K1xx\freescale_s32k144f512m15_pflash_dflash_eeprom.arp

Thanks.

Re: S32K144 I2C Example stopped with RTOS

TomLightning — Tue, 28 Sep 2021 12:51:48 GMT

Hello,

at which code section exactly does your code crash? Please, go step by step through your code in Debug Mode.

Best regards,

Tom

Re: S32K144 I2C Example stopped with RTOS

cheoljin — Tue, 28 Sep 2021 13:25:25 GMT

As I attached capture, it jump to DefaultISR.

It looks I2C's interrupt priority issue.

Re: S32K144 I2C Example stopped with RTOS

TomLightning — Tue, 28 Sep 2021 13:32:00 GMT

I am a bit confused due to that your attached project does not use FreeRTOS. It does not start a FreeRTOS scheduler at all. If you think it is a priority issue try to give it a logical lower priority (numerical higher). You can use functions of the interrupt manager driver from NXP for that.

Re: S32K144 I2C Example stopped with RTOS

danielmartynek — Thu, 30 Sep 2021 09:08:34 GMT

Hi @cheoljin,

It could be a fault exception.

Please follow these instruction to find the fault instruction and the fault memory address in case of a bus fault.

https://community.nxp.com/t5/S32K-Knowledge-Base/Fault-handling-on-S32K14x/ta-p/1114447

Regards,

Daniel