[Nu-Link2-Pro] Setting parameters in NU_CFG.TXT doesn't work

[jaydcarlson]

I'm trying to reconfigure the Nu-Link2-Pro to become a CMSIS-DAP by setting CMSIS-DAP=1 in the NU_CFG.TXT file, but the setting never sticks. I've tried ejecting the drive in Windows to force any pending writes to complete, and that doesn't help either. I've tried setting other things in the config file and they also fail to set.

I've tried it on Windows 10 and Windows 11, and I've tested every firmware version in this repo that has this feature (from revision 7174r to the latest version).

Also, I noticed that Windows thinks the file is "read only" — I have to clear that checkbox to be able to save the file. I'm not sure if that has anything to do with it.

[ccma1120]

Hi Jay,
could you download ICPTool and upgrade firmware by it? (just click "connect" button and it will prompt firmware upgrade)
https://www.nuvoton.com/resource-download.jsp?tp_GUID=SW1720200221181328

It needs to do firmware upgrade by ICPTool one time before any drag and drop NuLink2-Pro firmware upgrade (the NuLink2-Pro shippment with built-in firmware version <= 7313r need this patch, we will fix it in next version, > 7313r).
sorry for the inconvinence.

[elfmimi]

@ccma1120 Thanks! I confirm 7313r does support CMSIS-DAP mode.

Note to someone else: The firmware binary for Nu-Link2 can be also found here.
https://github.com/OpenNuvoton/Nuvoton_Tools/tree/master/Latest_NuLink_Firmware
But notice that you need to use another debug adapter to program it to Nu-Link2's MCU.