how to use scanf in nrf5340 DK using nrf connect sdk

[SRINI]

Hi ,

I am using nrf connect sdk , nrf 5340 dk board and segger studio. scanf is not working. please let me know how to use scanf for nrf5340 dk . can you provide me any example code for better understanding .

Regards,

Srinivas Rao.

[Håkon Alseth]

Hi,

 

Try adding these configurations to any project, and start using sscanf() freely:

CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_NEWLIB_LIBC_FLOAT_SCANF=y
CONFIG_MAIN_STACK_SIZE=4096

 

But please be aware that the sscanf() implementation in newlib does not support 8 bit IO types, as described in this thread:

https://devzone.nordicsemi.com/f/nordic-q-a/72455/nrf9160---sscanf---length-field-hhi-hhu

 

Kind regards,

Håkon

[SRINI]

Hi ,

we can't read data from the console using sscanf . we can read data from one buffer to another buffer. Actually, I will enter commands on the console. so, I need to read the commands from the console . 

Thanks & Regards,

Srinivas.

[Håkon Alseth]

Hi,

 

You can get data from the uart console by adding "CONFIG_CONSOLE_HANDLER=y".

Here's hello world with this feature:

hello_world_uart.zip

 

Kind regards,

Håkon