I have developing something for a couple of months now, I have a few target boards, all of which programmed in circuit with no issues, no if I try any of them, i get an SWD Communication Failure!!
I have reset targets, reset the PC, re-installed the Keil software, tried a different 20 way ribbon cable, tried the internal jumper in the 3.3v position, lowered the download speed, but nothing works.
Any ideas on what else I can try?
Has anyone else had this problem?
There are no ULINK version of Flash Magic to my knowledge.
The Flash Magic I use are a tool for non-JTAG updates of NXP processors. In my case, it uses RS232 to download firmware to a factory-supplied boot loader in the NXP chip.