Handling iso datetime in nrf52

[Tharun]

I am using nrf52832 chip. I will be receiving time in isoFormat.

I am wondering how convert the iso format to get the date and time in my C program.

I am not using any RTOS but doing everything on baremetal.

[ovrebekk]

Hi

So essentially you are getting a string with the date and time in ISO format?

I made a small example earlier showing how to use the time.h library on the nRF52DK, but the time.h library doesn't have a function for converting a string into a time object (only the opposite).

The following thread shows a way to use sscanf(..) to break down a date/time string into sub components, together with the date/time struct defined in time.h. You should be able to combine that example with the code I shared earlier:
https://cboard.cprogramming.com/c-programming/169114-how-convert-string-time_t.html

Best regards
Torbjørn

[Tharun]

@Torbjørn Is there a android library which will take a calendar and which will send the data to the BLE?

[ovrebekk]

Hi

Have you tried the Current Time Service client example in the nRF5 SDK?

The current time service is designed to allow a BLE peripheral to get an accurate date and time from a BLE central (typically a phone).

I think you need to run some code on the Android side to support it. Some quick googling yielded this example:
https://github.com/RideBeeline/android-bluetooth-current-time-service

I haven't tested it myself, but maybe you can get it working :)

Best regards