topic RT1010 Semihosting in MCX Microcontrollers

RT1010 Semihosting

Syam_Krishnan — Thu, 20 Jun 2024 06:47:57 GMT

Hi all,

I am trying to use semihosting on IMXRT1010 Dev kit with Segger Jtrace pro.

I need to print floating point numbers & hence I am using NewlibNano with printf float and scanf float enabled.

The prints work fine. However, I cannot use SCANF or GETCHAR. GETCHAR always gives me 255 as return.

I see that Redlib(semihost) is able to execute GETCHAR properly. However, when PRINTF prints %f or %d, it fills console with garbage.

My question in a nutshell is. What are the settings to be used ( libraries and others) to

1. get %f , %d working with PRINTF with semihosting

2. get SCANF working

Thanks

Syam K

回复： RT1010 Semihosting

Gavin_Jia — Wed, 26 Jun 2024 08:38:00 GMT

Hi @Syam_Krishnan ,

Thanks for your interest in NXP MIMXRT series!

I have test a modified with CMSIS-DAP on-board debugger. And it works well!

Here is my configuration for your reference:

And I attached my demo for your test. However, I don't have JTrace available for testing right now, so if you have no problem using my project with CMSIS-DAP, but still have problems with JTrace, we suggest you contact Segger for a solution.

Best regards,
Gavin

Re: RT1010 Semihosting

Syam_Krishnan — Tue, 02 Jul 2024 06:38:27 GMT

Hey Gavin,

Thank you very much. I tried your settings on an RTC example and I was able to do printf and scanf of floating point numbers using segger JTAG and semihosting. In my earlier project, I was missing the below settings

PRINTF_ADVANCED_ENABLE=1

SCANF_ADVANCED_ENABLE=1

I had been using Newlib. I will move to redlib