Flashing onto nRF1822, GCC compiled

[jdog]

Alright I'm a total newbie and have gotten myself so far...

I've compiled my project on macOS using ARM-GCC. Using the PCA10028 and the nRF51422, which works great on my Dev Board.

I then tried to flash the same hex file onto my custom board which has a nRF51822, it went on but doesn't seem to be working... I'm definitely flashing onto it as it shows up as a nRF51822 in nRFgo Studio instead of the usual nRF51422.

So I assume I need to compile the source code differently for the nRF51822? Are there any examples lying around that I can follow?

My chip has the following written on it:

N51822 QFAB00 1530NQ

Thanks

[Turbo J]

Almost the samne chip, but did you put on the 37.768 kHz quarz crystal? Note that the QFAB variant has only 128KB flash and 16 kB RAM. If you have compiled with wrong RAM settings, the stack will not work.

[jdog]

Thanks. It's connected to a 16MHz crystal (uk.farnell.com/.../2723234)

Where are the RAM settings? I can't see them in the Make file.

Thanks

[jdog]

Ah okay so in the *.ld I see:

{
  FLASH (rx) : ORIGIN = 0x1b000, LENGTH = 0x25000
  RAM (rwx) :  ORIGIN = 0x20001870, LENGTH = 0x6790
}```

What should these be set to for the 1822?

I also made it use the synthesised clock with the 16MHz crystal.

[jdog]

Changing the linker memory settings as outlined in this post got it working for me: devzone.nordicsemi.com/.../