We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
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?
its connected to an STM32F103.. I was simply downloading an existing program when it stopped responding, Ive tried another ribbon cable....
thanks for the suggestions tho...
Maybe you broke the PLL settings? On some devices, that can lead to JTAG communication loss. If I were you, I would attempt to delete the flash using your equivalent of FlashMagic.
A colleague of mine sometimes has to power cycle his ULINK 2 when it simply refuses to do its job...
any idea what the ULINK version of Flash Magic is.......
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.