ISP130301C nothing is running

[MBlau]

Hi,

I have an ISP130301C chip based on the nRF51822 chip. I'm using the jLink Segger EDU to flash the chip without any problems. But it seems like nothing is running correct on the chip. Even in the blinky example if I set breakpoints anywhere the debugger never stops at one. The same is running without a problem on my nRF51 DK board. The ISP chip is drawing like 4mA constantly with every code I flash on it.

I don't know where to search for an error? The Chip seems to be connected properly because I can flash it and i gets detected by the jLink. The code is running on the nRF51 DK.

What can be wrong? Any hint?

Solved the Problem. The data sheet from the ISP130301 is just wrong... The Chip is 128 KB Flash and 16 KB RAM not 256 KB and 32 KB. I changed the device in the make file and everything is running so far! Thanks for the hint with the incorrect RAM or flash memory size!!!

[Alex]

Does ISP130301C have the same hardware configuration? DC-to-DC and 32kHz crystal come to mind as the first thing. Or amount of RAM on nRF51 chip is different, not enough on ISP130301C

[MBlau]

The data sheet says: "Even though its very small size 8x11x1.2mm, the module integrates decoupling capacitors, 16 MHz and 32 kHz crystals, load capacitors, DC-DC converter, RF matching circuit and antenna in addition to the wireless SoC." and "32bit ARM Cortex M0 CPU with 256kB Flash" and "Integrated 16 MHz and 32.768 kHz Clocks"

I think it should fit!? I used the device name "nRF51822_xxAC", is that correct?

Any suggestion?

[MBlau]

The Debugger ist jumping directly in an HardFault_Handler() function! Any conclusion?

" (gdb) target remote localhost:2331 Remote debugging using localhost:2331 0x000002f6 in HardFault_Handler ()"

[MBlau]

Thanks! It was the RAM and Flash size.