Radio Test

[Gerber]

Hello

I cannot load the Radio Test code onto the Nordic NRF52 devkit.  I'm using SDK15.3 and the project located at C:\nRF5_SDK_15.3.0\examples\peripheral\radio_test.

The program compiles but I receive the error "Error: Flash Download Failed. - Cortex M4."  I know my devkit if good.  I've even tried two devkits but I get the same error.

Any advice?

thanks

Shawn

[Hung Bui]

Hi Gerber, 

Maybe you need to do an eraseall on the chip (nrfjprog --eraseall) . If the softdevice already on the chip you wouldn't be able to flash the radio_test example. 

[Gerber]

I erased the flash but I receive the same error after attempting to reprogram.

[Hung Bui]

Could you take a screenshot of the log when you do the commands with nrfjprog  ? 
Have you tried to flash other examples, for example the blinky project ? 

[Gerber]

Hell Hung Bui

I programmed my boards using Segger.  Originally, I was using Keil.  I'm not sure why this is the case.  

Now that the boards are working with the radio test example, if I try to initialize a start channel and then begin transmission, I cannot detect anything on the receiving board.  Is there a step by step procedure for transmitting a pattern and then receiving it?

thanks

[Hung Bui]

Hi,

It should be quite straight forward. For example to do a modulated carrier at frequency 2440MHz you do this: 

start_channel 40

start_tx_modulated_carrier