J-Link lite under Eclipse

[shin]

Hello,

I am porting a blinky program to my custom board having nRF51822. The program is compiled under Eclipse (+ GCC) and is downloaded to the board via J-Link Lite. But the program is halted as follows: ...Target halted (PC = 0xFFFFFFFE). I would like to know the reason and how to solve it.

I have two boards as follows: Board A: PCA10028 (Nordic Development Kit including SEGGER J-Link OB) Board B: A custom board having nRF51822 (connected with J-Link Lite)

When I compiled the blinky program with Keil, the same executable file could be download to Board A and Board B, and the program could run well on both boards. However, when I compiled the program with Eclipse+GCC, the executable program could be download to Board A and run well on the board. For Board B, the program halted at 0xFFFFFFFE.

I think that the custom board plus J-Link Lite is probably similar to PCA10028 and this seems to be proven by running the same executable file compiled by Keil. I expected naturally that GCC compiled program run on both boards. But the result is not so.

I am not sure the reason, but I assume that J-Link Lite has no GDB server capability but J-Link OB in PCA10028 has it. But if so, with Keil, why does the same program run on both boards?

I would appreciate having your advice and suggestion how to solve it. Than you.

[shin]

Thank you very much for your comment. My custom board has nrf51822 having 16KB RAM and nrf51422 of PCA10028 has 32KB RAM. I have forgotten the fact. Your comment is correct. The blinky program compiled by GCC runs well on the custom board now. It looks that there is difference between the executable object by Keil and the one by GCC on how to treat RAM. If you know it, could you please let me know it? Thank you very much again for your advice. Best regards.