topic Unable to sprintf float value with redlib(semihost-nf) in MCUXpresso IDE

Unable to sprintf float value with redlib(semihost-nf)

akimata — Tue, 30 Jun 2020 14:45:36 GMT

Hi,

I'm struggling to sprintf a float value with redlib(semihost-nf). What i've done:

- set PRINTF_FLOAT_ENABLE=1

- set SCANF_FLOAT_ENABLE=1

- removed CR_INTEGER_PRINTF

Example code:

char text_buffer[64]
snprintf(text_buffer, sizeof(text_buffer), "declination: %.2f\r\n" , 5.25);

Any ideas what else might be wrong?

It's working on newlib(semihost) but semihosting on that lib is just too slow and i would rather to stay on redlib.

Re: Unable to sprintf float value with redlib(semihost-nf)

ErichStyger — Tue, 30 Jun 2020 14:51:31 GMT

choose a different redlib library. nf means 'no-float'.

Re: Unable to sprintf float value with redlib(semihost-nf)

akimata — Tue, 30 Jun 2020 15:09:01 GMT

I tried also redlib(semihost) and redlib(semihost-mb) and noone of them works.

Re: Unable to sprintf float value with redlib(semihost-nf)

ErichStyger — Tue, 30 Jun 2020 15:39:56 GMT

this is what I have:

Re: Unable to sprintf float value with redlib(semihost-nf)

akimata — Tue, 30 Jun 2020 17:11:59 GMT

That's what i got in the settings. The weirdest part is that i created new project and it's working just fine there, but i cannot get it to work on my project so i just generated whole new project and copied files there and problem solved!. Still have no clue why didn't it work on my last project tho.

Re: Unable to sprintf float value with redlib(semihost-nf)

ErichStyger — Tue, 30 Jun 2020 18:21:14 GMT

correction: nf means no-files (not no-float)

Re: Unable to sprintf float value with redlib(semihost-nf)

ErichStyger — Tue, 30 Jun 2020 18:23:51 GMT

could it be that you changed something in the linker settings? I would compare those.

Re: Unable to sprintf float value with redlib(semihost-nf)

zhiqunhu — Tue, 30 Jun 2020 18:48:15 GMT

Try to remove CR_INTEGER_PRINTF in Preprocessor configuration.

Re: Unable to sprintf float value with redlib(semihost-nf)

georgeliolidis — Tue, 06 Aug 2024 23:43:27 GMT

I had the same problem and i solved it after correcting the preprocess symbol:

CR_INTEGER_PRINTF to _CR_INTEGER_PRINTF.

(was missing the preceding underscore)