Hello,

I use J-Link EDU mini to download hex into FPGA with Cortex-M0 MCU, I tried different ways to download hex but the results are different. Hex files are compiled and output by Segger Embedded Studio.

1. (Fig1.)Download by J-Link commander is correct

2. (Fig2.)Download by J-Flash Lite is incorrect, the data that is over 4KB will overwrite to 0x00000000, the same situation will also happen when more than 8KB starts to write from 0x00000000, then also using Segger Embedded Studio.

Do I need to change any configuration? Or is there any direction to provide a reference?

Hi Fabian,

Thanks for your reply, I don't know how to enable J-Flash Lite's logging, I use SEGGER Embedded studio instead, and the results are same with those two tools.

I have attached three log files,
1) Using J-Link Commander
2) Using SES download a hex file which less than 4KB
3) Using SES download a hex file which over 4KB

J-Link commander used the API "JLINK_DownloadFile" but SES use "JLINK_WriteMem". I see the return value is different, the fail one returns 0xFFFFFFFF, just for information.

Thanks,
Neo