nRF51822 mbed - Use mbed on a nrf51822 breakout board

RE: nRF51822 mbed - Use mbed on a nrf51822 breakout board

littedino2112 — Wed, 16 Jul 2014 07:58:26 GMT

Hi, I'm using Keil as my compiler and Ulink2 for flashing/debugging purposes. Any idea why it's not working correctly?

RE: nRF51822 mbed - Use mbed on a nrf51822 breakout board

Tüze — Tue, 15 Jul 2014 09:06:14 GMT

Hi there,

Which tool are you using for the parsing and flashing of the hex file? The lack of correct UICR parameters are not desirable but not detrimental. Your application should still run without encountering the errors you have outlined.

RE: nRF51822 mbed - Use mbed on a nrf51822 breakout board

littedino2112 — Wed, 09 Jul 2014 05:38:10 GMT

Any help would be appreciated?!

RE: nRF51822 mbed - Use mbed on a nrf51822 breakout board

littedino2112 — Fri, 04 Jul 2014 04:12:21 GMT

So, i did more research and found out that the softdevice may need to write to UICR register to define the code region 0 as well as it's firmware version (register CLENR0 and FWID). These 2 registers are in address 0x10001000 and 0x10001010. When i tried to flash the Softdevice seperately using the Ulink2 debugger, i got these messages:

No Algorithm found for: 10001000H - 10001013H Partial Erase Done (areas with no algorithms skipped!)

I extended the address range for flash algorithm so i could cover this aforementioned range as well. But i coulnd't get it to work. The flash process failed. I found on Nordic uicr_config document that i'd need a dedicate target driver to write to this UICR register. This driver comes with nrfjprog.exe cmd line tool. The problem is this driver only works with Segger debugger. Is there any other driver out there that works with Ulink 2 debugger? Or any other approach? Any help would be appreciated. Thanks

Hoang