NRF9160 zephyr os cannot use the sscanf

RE: NRF9160 zephyr os cannot use the sscanf

zsn — Thu, 27 Jun 2024 21:26:15 GMT

the solution is I needed to enable it

CONFIG_NEWLIB_LIBC_FLOAT_SCANF=y

RE: NRF9160 zephyr os cannot use the sscanf

zsn — Thu, 27 Jun 2024 21:17:12 GMT

I know this is too old ticket but, I cant use sscanf for float numbers, even though I enabled

CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

CONFIG_NEWLIB_LIBC_NANO=y

but sscanf works ok for the Not a floating-point number

char input[] = "23.98";
 float vald = 0;
 int num_parsed = sscanf(input, "%f", &vald);

printk("Input: %s\n", input);
 printk("Parsed values: %f\n", (double)vald);
printk("Number of values parsed: %d\n", num_parsed);



return: 

Input: 23.98
Parsed values: 0.000000
Number of values parsed: 0

RE: NRF9160 zephyr os cannot use the sscanf

Håkon Alseth — Tue, 27 Aug 2019 14:35:36 GMT

Hi,

The default libc is the zephyr minimal libc, which does not include a implementation of sscanf. Could you try adding CONFIG_NEWLIB_LIBC=y to your prj.conf and recompile?

Kind regards,

Håkon