Warning - I'm just starting to work with the cortex-m3 (using a STM32F103VC) and am going crazy! I've been trying to download files from a Yagarto environment into a STM32 Development board with no success. I am able to compile and run the code on the board via the GDB and the J-Link EDU device. The next step was downloading code - no go. I decided to take a step back and see if I could even read/write memory. I used a "savebin foo 0x0, 0x3ffff" command (the entire 256k Flash memory) and that worked fine. I tried writing a main.bin file to the device and that's where the problems started:

-1-
Sometimes the J-Link device hangs (com problems, can't allocate memory - yes I reloaded the software and USB driver - no help)

-2-
I then read about the J-Linkstm32 Software and gave it a try - I was sort of able to upload data using J-Link afterwards. "Sort of" since the binary data in the main.bin isn't what I see in the processor memory. It has changed though. The J-Link device hangs again from time to time though.

-3-
I tried using J-Flash, thinking that I should use that to write the internal Flash. No-go: no Flashable memory found! Is it looking for external memory?

Am I just missing a major concept regarding the STM32 and/or J-Link??? Do I have a defective device? I'm totally lost Help, please!

Best Regards,

confused in Mannheim