Hi Has anyone been able to write to the UICR NFCPINS register? I am using the following code and it i get a cpu reset
/*=============================================================================*/
/*=============================================================================*/
STATIC UWRESULTCODE
NfcPubWriteUICR_NFCPINS(
VOID
)
{
UI32 nNewVal = 0xFFFFFFFE;
/* Turn on flash write enable and wait until the NVMC is ready: */
NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos);
while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
{
}
NRF_UICR->NFCPINS = nNewVal;
/* Turn off flash write enable and wait until the NVMC is ready: */
NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos);
while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
{
}
return UWRESULTCODE_SUCCESS;
}
I note that back in May 2015, someone asked for sd_flash_write() to be able to that and Nordic responded that it will be added to the wish list. Needlessly to say that in v2.0.0 of the SD132 it does not work and returns an INVALID_ADDR
And frustrating thing is that there is a sample app in examples\peripheral\uicr_config and all I see in main.c is ..
int main(void)
{
while (true)
{
/* Do nothing */
}
}
And the only file that mentions NFCPINS is system_nrf52.c and it is doing what I do above.
Which means if it works there, but not for me, it must be something to do with softdevice having been started by the time I come to calling my code.
Reason I need the 'late' call is that I need to offer a programmatic way of disabling the NFCPINS as our customers do not have a compile phase for the module we are going to provide
Look forward to hearing from anyone and thank you in advance
