PCA20006 Beacon Example on new nRF51822

[Javier]

Hello!

I have been working recently with the PCA20006 Beacon board. The example we have tested is the ble_app_beacon that allow us to change the UUID/Major/Minor and go into DFU mode depending the pressed button.

With the PCA20006 works perfectly, but when we try to upload the same code onto a custom board (nRF51822QFAAG2 - S110 from SDK 7.1.0 and bootloader for the PCA20006) everything works except the DFU mode (I have configured the pin 3 and 4 for the button, just replacing those values inside the pca20006.h file) and it feels a bit slow when advertising at the begining.

We were wondering if that could be because of the Target option in Keil (maybe the ROM/RAM configuration). We are also trying to export the code for the S130.

Kind regards, Javier

[bjorn-spockeli]

Hi Javier, which revision is your PCA20006 board? (see this page)

[Javier]

Dear Bjørn,

The revision of the board is the 1.2.0. However in the end we managed to make the same code/bootloader/sd to work in the custom nRF51822 board. EDIT:I have uploaded again the code. Now the bootloader button works, the UUID upgrade not. Looks strange

I was making a mistake with the pins (Not modifiying it properly in the bootloader code). Also I modified the Target settings: -Xtal (MHz) : 16.0MHz -IROM1: Start -0x16000 Size - 0x28000 -IRAM1: Start -0x20002000 Size - 0x6000

The only thing is that at the beggining it looks a bit slow untill I get the first advertisement.

Kind regards, Javier

[bjorn-spockeli]

The nRF51822 CEAAEx variant only has 16kB(0x4000 bytes) of RAM, so the IRAM1 size should be adjusted to 0x2000.

[Javier]

Sorry for taking your time, it is working again with the RAM/ROM basic configuration. Then, for a nRF51822QFAAG2 I can leave the RAM the same way as for the nRF51822 CEAAEx, but I assume that if I extend the size 0x6000 for the RAM it will work as well?

Thank you a lot! Javi

[bjorn-spockeli]

The nRF51822QFAAGx also has 16kB of RAM, see this overview on Infocenter. If you want to run you application on a nRF51 variant that has 32kB RAM , then yes, you should adjust the size to 0x6000. It might still run, but I do not recommend setting the size to 0x6000 if you only have 0x4000(i.e. 16kB of RAM).