Long long Int value sprintf

[Mmterkc]

Hi, I am working with nrf9160, I want to convert INT64 timestamp value to CHAR array with sprintf. I use %lld but sprintf said only "ld" if I use %ld it convert only low side 32 bit value. I tried printk fonction for print int64 value on screen It is working. I looked inside fonctions both are using same core code. I don't understand why it doesn't do conversion. Mybe I forgot some CONFIG settings. How can I convert INT64 long long value to char array?

My code:

sprintf(timestampChar,"%" PRId64 "\n",timestamp );

//sprintf(timestampChar,"%lld",timestamp );

both sprintf doesn't work! When it convert it writes this "ld" any number value

printk("%lli\n", timestamp);

printk work!

[Kazi Afroza Sultana]

Hello Mmt,

Thanks for your query.

Have you tried to implement a code from sample or build from a scratch? Is the header file included properly? 

you can check this sample  ...\nrf\samples\nrf9160\modem_shell\src\utils  modem_shell to see how sprintf is used and the configure file (prj.conf) as well. 

You can check CONFIG_NEWLIB_LIBC=y to make sprintf supports int64 (https://docs.zephyrproject.org/latest/reference/libc/index.html ). 

Please try this and let us know the consequence. 

Best Regards,

Kazi Afroza Sultana

[Mmterkc]

Thanks for your answer but CONFIG_NEWLIB_LIBC=y already inside my conf file. 

code:

sprintf(timestampChar,"%lld",timestamp );

printk("timestampchar:%s",timestampChar);

output:
timestampchar:ld

Kazi Afroza Sultana

[Mmterkc]

I added CONFIG_NEWLIB_LIBC_NANO=n. It worked.

Thanks