How to write data to UICR CUSTOMER registers?

RE: How to write data to UICR CUSTOMER registers?

Vidar Berg — Wed, 05 Apr 2017 05:44:20 GMT

the AT keyword is not supported, but you can do something like this:

volatile uint32_t user_data  __attribute__ ((section(".uicr_customer"))) = VALUE;

then add and configure the placement of this section in the linker script:

MEMORY
{
   ...
   UICR (r) : ORIGIN = 0x10001080, LENGTH = 0x4
}

SECTIONS
{ 
  ...
  .uicr_customer : 
  {
    KEEP(*(.uicr_customer))
  } > UICR

}

RE: How to write data to UICR CUSTOMER registers?

koniho — Tue, 04 Apr 2017 15:51:44 GMT

Apparently not!

RE: How to write data to UICR CUSTOMER registers?

koniho — Mon, 03 Apr 2017 14:49:56 GMT

Is this compile-time approach supported by GCC?

RE: How to write data to UICR CUSTOMER registers?

ligang — Fri, 09 Dec 2016 04:09:54 GMT

unsigned long dataflash[32];

void write32data(void) { NRF_NVMC->CONFIG=2;//FOR DEL NRF_NVMC->ERASEUICR=1; //while(NRF_NVMC->READY==0);

NRF_NVMC->CONFIG=1;//FOR write
for(int tmpi=0;tmpi<32;tmpi++)
{
	NRF_UICR->CUSTOMER[tmpi]=dataflash[tmpi];
}
NRF_NVMC->ERASEUICR=0;
NRF_NVMC->CONFIG=0;//FOR READ

}

void read32data(void) { NRF_NVMC->CONFIG=0;//FOR READ for(int tmpi=0;tmpi<32;tmpi++) { dataflash[tmpi]=NRF_UICR->CUSTOMER[tmpi]; } }

I write a some code to operate the UICR. but run in s130 with BLE will error.

RE: How to write data to UICR CUSTOMER registers?

Vidar Berg — Thu, 08 Dec 2016 16:06:10 GMT

Hi, the approach for setting these registers depends on when you want to do it. I.e., at compile time or at runtime.

You can for instance use the attribute keyword to declare a variable in one of the customer registers so that it gets included in the FW image (Keil)

uint32_t  user_data  __attribute__((at(NRF_UICR->CUSTOMER[x])) = VALUE;

Or if you wish to write to set the register during program execution (should be done prior to initialization of SD):

    if (NRF_UICR->CUSTOMER[x] == 0xFFFFFFFF) 
    {
        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
        NRF_UICR->CUSTOMER[x] = VALUE;
        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
    }