topic sscanf question in 8-bit Microcontrollers

sscanf question

asier — Wed, 24 Jul 2024 08:19:40 GMT

Hi,

I'm working with LPC804 and MCUXpresso IDE.

I'm trying to do work sscanf but no way.

My example is the following:

char buff[] = "12"; int i; sscanf(buff,"%d",&i); if (i == 12){ GPIO_PinWrite(BOARD_INITPINS_BLOQ_GPIO,BOARD_INITPINS_BLOQ_PORT,BOARD_INITPINS_BLOQ_PIN, 1); }

Any idea what is wrong?

Thanks,

Asier.

Re: sscanf question

Harry_Zhang — Thu, 25 Jul 2024 03:57:06 GMT

Hi @asier

When you use this pin, please initialize the configuration for this pin.

Hope this will help you.

Hang

Re: sscanf question

asier — Mon, 26 Aug 2024 16:24:11 GMT

Hi HangZhang,

The pin is correctly initialized and it works fine.

The issue is not with "GPIO_PinWrite" instruction, but with "sscanf".

"i" does not get 12 value after executing "sscanf(buff,"%d",&i);" code line.

What is wrong when using sscanf in our example?

Thank you,

Asier.

Re: sscanf question

Harry_Zhang — Tue, 27 Aug 2024 02:50:08 GMT

Hi @asier

I refer to your code, i can get 12 value after executing "sscanf(buff,"%d",&i);" code line.

I share my code with you.

Hang

Re: sscanf question

asier — Fri, 30 Aug 2024 11:45:57 GMT

Hi HangZhang,

My problem was that I was doing uint16_t i; instead int i;.

I don't know why but when using uint16_t i; sscanf stucks.

Thank you for your time,

Asier.