thingy91:nRF52840 int64_t convert the value to string in sprintf

[MakotoKoike]

thingy91:nRF52840 int64_t convert the value to string in sprintf

Add next line in proj.conf

CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_NANO=n

If you do the following:

int64_t xxx = 1609665300;
int8_t unix_time[256] = {'\0'};

sprintf(unix_time, "%"PRIu64" ", xxx);
printk("unix_time = %s\n",unix_time);
sprintf(unix_time, "%llu", xxx);
printk("unix_time = %s\n",unix_time);
sprintf(unix_time, "%lld", xxx);
printk("unix_time = %s\n",unix_time);

As a result

unix_time = lu
unix_time = lu
unix_time = ld

Is there a CONFIG that is not enough?

[MakotoKoike]

There is no problem because it is relood in SES.

I'm not trying the attached application.

I didn't know what to do with SES.

By the way, where is the source of sprintf?

The source of minimal's library was:
\ncs\v1.4.2\zephyr\lib\libc\minimal\source\stdout\sprintf.c

When linking, liblib_libc_newlib.a is linked, but the included source is libc-hooks.c only.

[Carl Richard]

Okay, so it's fixed now? If not please try the application I attached by flashing it to your device using the nRF Connect for Desktop programmer app. The application is just a small sample with the code from your ticket. 

The source is located in the libc that you use, which in your case is newlib. You can find the source here. 

Best regards,
Carl Richard

[MakotoKoike]

I was able to do add HEX by operating nRF Connect for Desktop.

I don't know if it's moving.

Attach the SES screen. Is the contents of newlib the same?

[Carl Richard]

Hello again!

Good. You can check the output by using the JLink RTT Viewer, which should come bundled with the nRF Command Line tools. Instructions for how you can connect are present in our documentation.

I see the same as you for newlib in SES when compiling here. Could you try to open the project again by doing the "File -> Open nRF Connect SDK project" procedure in SES?

Best regrads,
Carl Richard

[MakotoKoike]

After opening the nRF connection SDK project in SES, it worked fine.

Thank you very much.

RTT Viewer could not connect.