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I am using ULINK to debug the LPC2132 board. They work well for some days. But now a problem appeared. Everytime I want to download code to FLASH, always get"Could not stop ARM device, please check your JTAG cable?" But JTAG can be detect on Option for device. I do not know what is wrong? Thanks in advance for any idea.
I get the same error using the Keil Eval board for ST ARM9. It started when I changed the BBADR and NBBADR in the STR91x.s startup file. However after I changed them back, the error was still there.
As suggested by other users (for ARM7) I lowered the Max JTAG Clock to the minimum 5kHz and selected Use Reset at Startup. A reboot did not help either.
The JTAG is getting 3V and there is activity on all JTAG pins when attempting to Download to Flash.
I don't think this is a problem with regards to enabling/disabling the JTAG as there is activity on those pins.
Does anyone have any insight?
Thanks, KK
I found the solution! http://www.keil.com/support/docs/3215.htm
The 0.5s to 1.5s is a bit tricky.
But why do I get this error in the first place?
Thanks KK, and did you try it and succeed? I tried many times and always failed. Sigh...