S32 Design StudioのトピックRe: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

p_decesare — Thu, 25 Jun 2020 15:58:14 GMT

Hi,

I have some problems with the function Printf. I include the library <stdio.h> in my file main.c. The idea of my code is to turn on and off a green led. When I debug my code, I want to see on comsole the word: Green.

Here my code:

#include "S32K144.h" /* include peripheral declarations S32K144 */
#include <stdio.h>

int main(void)
{
PCC->PCCn[PCC_PORTD_INDEX] = 0x40000000;
PORTD->PCR[15] = 0x00000100;
PTD->PDDR = 0x00008000; /*output*/

for(;;) {
PTD->PDOR = 0;
PTD->PDOR = 0x00008000;
printf("Green");
}

return 0;
}

Excuse me for the trivial question, but I'm a begginer with the embedded system.

I hope that someone could help me.

Thanks for your availability

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

jiri_kral — Thu, 25 Jun 2020 18:59:14 GMT

Hi,

you need to use lib C with Debugger console:

printf output is shown in Semihosting console.

Hope it helps.

Jiri

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

p_decesare — Mon, 29 Jun 2020 07:18:47 GMT

Hi Jiri Kral

thank you for your answer. I don't resolve the problem.

Here two figures.

I follow your advice, in fact I set the option of Libraries Support. But at the Console I don't see the word Red.
Can help me?

Thank you for your availability.

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

jiri_kral — Mon, 29 Jun 2020 11:15:58 GMT

Hi,

sprintf is for printing into string (memory). Try to use printf instead.

Jiri

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

peter_thompson — Mon, 13 Jul 2020 22:57:51 GMT

I'm also trying to get printf to work, but it isn't working.

Using S32K148EVB, connected via USB to laptop with Win10 with S32 design studio (just updated to latest).

The code:

int main(void)
{
PCC->PCCn[PCC_PORTD_INDEX] = 0x40000000;
PORTD->PCR[15] = 0x00000100;
PTD->PDDR = 0x00008000; /*output*/

for(;;) {
PTD->PDOR = 0;
PTD->PDOR = 0x00008000;
printf("Green\n");
}

return 0;

}

Using the library Ewl_C Debugger Console.

In theory, this should be printing "Green" continuously on the debug console, but I'm not seeing anything.

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

jiri_kral — Tue, 14 Jul 2020 09:15:08 GMT

Hi,

the printf output is shown in semihosting console:

If console is not visible for some reason - you can open it in console menu:

Hope it helps.

Jiri

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

peter_thompson — Tue, 14 Jul 2020 17:50:08 GMT

Hi Jiri,

I am not seeing the text “Green” on the debugger console, nor the regular console. I have tried also to use Teraterm to listen for the text, but I am not seeing anything. I have the ewl_c Debugger Console set for Libraries support.

I downloaded and ran the LPUART project – this communicates fine with Teraterm.

Anything else I should check?

Cheers, Peter

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

peter_thompson — Tue, 14 Jul 2020 17:58:33 GMT

Odd. I just created new example, set the library to ewl_c debugger, added include <stdio.h> and the printf worked.

So, I think I’m good for now. Thanks for your help.

Cheers, Peter

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

tzeng015 — Mon, 07 Mar 2022 08:08:42 GMT

hi jiri_kral
I have the same problem and the printf function is also can't work well.

Please see the attach file .

thank you

tzeng015

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

tzeng015 — Tue, 08 Mar 2022 08:40:00 GMT

ewl_C Debugger Console ??
I can’t see it .

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

psarkar — Mon, 18 Sep 2023 18:59:54 GMT

Were you able to resolve the issue? I am facing the same issue and am unable to see 'ewl_c debugger' as in the snapshot shared here.

Re: I don't understand how to use the function printf in S32 Design Studio for ARM Version 2.2

Mehul_Patel_NXP — Thu, 28 Sep 2023 15:27:03 GMT

Hi, @tzeng015 ,

Sorry, checking here. If the issue was resolved.

Thank you. Best regards.

- Mehul Patel