NRF52805 Issue: UICR Reading via application

RE: NRF52805 Issue: UICR Reading via application

Gokulnath — Mon, 27 Nov 2023 10:50:44 GMT

Thanks

I've made it work like this.

char SERIAL_NUMBER[12];

itoa((int)NRF_UICR->CUSTOMER[0],SERIAL_NUMBER, 16); //getting the serial number from UICR

Then passing it to the "DIS".

Thanks for your suggestion

RE: NRF52805 Issue: UICR Reading via application

Håkon Alseth — Thu, 23 Nov 2023 13:56:00 GMT

Hi,

This is quite basic C programming syntax that you're asking about. I can give you some hints, but you have to learn this if you are to develop firmware. You can setup generic itoa() examples on your host OS instead of running it on the embedded device, if you want to play around with how string conversions work.

* You need to declare an array instead of the pointer "SERIAL_NUMBER".

* You can provide the NRF_UICR->CUSTOMER[0] directly to itoa, if this is the only number you want to convert from hex to ascii.

Kind regards,

Håkon

RE: NRF52805 Issue: UICR Reading via application

Gokulnath — Wed, 22 Nov 2023 15:53:05 GMT

Hey, I've checked out & I'm unable to solve it. I'm not very experienced in coding.

could you help me with the example code, please? or some sample suggestions would be greatly appreciated.

Thanks and have a good day.
Gokulnath

RE: NRF52805 Issue: UICR Reading via application

Håkon Alseth — Mon, 20 Nov 2023 14:26:07 GMT

You need to give itoa() a valid memory area, not a uninitialized pointer.

See the documentation for the standard function: https://cplusplus.com/reference/cstdlib/itoa/

Kind regards,

Håkon

RE: NRF52805 Issue: UICR Reading via application

Gokulnath — Mon, 20 Nov 2023 13:35:24 GMT

Hello,

Thanks for your reply.

Sorry my bad on the original explanation: i basically meant xxxx value of an Hex string max 8 char

I basically mean this for example.
2) nrfjprog --memwr 0x10001080 --val 0x0E (or) as an eg. (005A340E)

[quote userid="2115" url="~/f/nordic-q-a/105865/nrf52805-issue-uicr-reading-via-application/456411"]2) nrfjprog --memwr 0x10001080 --val xxxxxxxx [/quote]

to convert it to Ascii could you let me know some example code here, please?on itoa() function I'm unable to find it on my side.

code on my side.

uint8_t* SERIAL_NUMBER;

uint8_t* uicr_val= (uint8_t *)NRF_UICR->CUSTOMER[0]; //getting the serial number from UICR

itoa(*uicr_val, &SERIAL_NUMBER,16);

ble_srv_ascii_to_utf8(&dis_init.serial_num_str, (char *)SERIAL_NUMBER); // sending it to DIS

getting this error

"passing argument 2 of 'itoa' from incompatible pointer type [-Wincompatible-pointer-types]" finding it difficult to solve this issue on my side.

Thanks

RE: NRF52805 Issue: UICR Reading via application

Håkon Alseth — Mon, 20 Nov 2023 12:58:26 GMT

Hi,

[quote user=""]2) nrfjprog --memwr 0x10001080 --val xxxxxxxx [/quote]

This requires that you write an actual string, ie a ASCII null terminated byte array.

What ble_srv_ascii_to_utf8 does is to convert an ASCII string to utf8, and if the input is not \0 terminated, it will not work as you intend it to.

I suspect you first have to convert your value(s) to ASCII (itoa() for instance)

Kind regards,

Håkon