Serial number from nrf52832 with Segger

[cyrine]

Hi, 

I'm trying to use the serial number of the nrf52832 microcontroller in code, how can I acess it with Segger.

I tried using this code from this link but it doesn't work  https://devzone.nordicsemi.com/f/nordic-q-a/42671/how-to-find-out-nrf52-chip-revision

Thank you for your help.

[Vidar Berg]

Hi,

Are you looking for an ID that's unique for each device? You can use the DEVICEID[] registers store in FICR for that. 

I tried using this code from this link but it doesn't work

 Can you elaborate on what didn't work specifically?

[cyrine]

I keep getting these errors

[Vidar Berg]

The variable must be initialized inside a function since the FICR value is not going to be known at compile-time.

eg.

/* device_id defined globally. Will be zero-initialized by startup code */
static uint32_t m_device_id;

void my_function(void)
{
    m_device_id = NRF_FICR->DEVICEID[0]; /* Assign Device ID from FICR to m_device_id variable */
}