Reading RF TX Power with from register

[Houman]

Hi All,

I need to find the RF Tx power setting of the nRF52840 by reading from the register. I understand this is possible through Jlink and the following command:

--memrd <addr> [--w <width>] [--n <n>]    

I know the addr is 0xABCDEF but what values should I use for w and n?

Thank you

 

     

[Jared]

Hi,

You don't need to provide the number of bytes to read or the width. You can read the TX power of the nRF52840 by using the nrfjprog memrd:

nrfjprog --memrd 0x4000150C

best regards

Jared 

[Houman]

Hi Jared

All I am getting is zeros!!

any ideas?

[Dmitry]

Hi,

the radio is active for short periods of time, so you will get zeroes most of the time. You can try to catch the values directly with jlink.exe, by typing command "mem32 0x4000150c,5" until you get non-zero result  (nrfjprog halts core when connecting, giving you only one attempt)