Chip version clock problem.

[Rick Bronson]

I have two boards similar to www.aliexpress.com/.../1862953539.html

openocd on one board shows:

Info : nRF51822-QFAA(build code: G0) 256kB Flash

and on the other it shows:

Info : nRF51822-QFAA(build code: CA/C0) 256kB Flash

CA/CO works fine with my code (efn.org/.../main.c) but GO does not work. I'm using the UART at 115200 Baud and GO is sending out char's at about 57600 Baud instead of 115.2 kBaud. Also, the radio via s110 doesn't seem to be working either. The boards appear to have a different crystal manufacturer on them, GO has one marked "sk 16.02 w", CA/CO has "16.00012" marked on it. Neither board has a 32 kHz crystal. Any help is greatly appreciated.

Rick

[Rick Bronson]

• SOLVED-

Oops, sorry folks, I found that I was setting the XTALFREQ reg to 0 which sets it to 32 MHz. The only reason it worked on the CA/CO board is because there is an errata that says that register is non-functional on that version.

Rick