Hdello,
on my new board I have a TMS320F28035PAG (64 pin package) and Iam having trouble with the debugger connection. I use a XDS100V2. The JTAG scan test works fine. But when I start a debug session I get the error
"Error connecting to the target:
(Error -1015 @ 0x0)
Device is not responding to the request. Device may be locked, or the emulator connection may be unreliable. Unlock the device if possible (e.g. use wait in reset mode, and power-cycle the board). If error persists, confirm configuration and/or try more reliable JTAG settings (e.g. lower TCLK).
(Emulation package 5.1.507.0)"
I found a hint in the datasheets and the forum to use boot mode "wait" (GPIO34=LOW, TDO/GPIO37=HIGH, TRST=LOW) to prevent the controller from making stupid things. But the controller should be empty, it's fresh out of the box. But no luck with this boot mode. I found this post
and hey! I see a similar pulse on the reset pin, pulsing @ 74 Hz. This looks not good!
I tried to to disconnect the debugger duing power up to make sure all IOs are at their expected level, I tried all other combinations of boot mode pins incl. emulator boot, I did a hardware reset after power up, nothing works :-(
Only when I pull GPIO34 and GPIO37 to LOW (parallel boot), the reset pulse vanishes. But still no connection to the debugger.
On a ControlCardISO I changed a damaged Piccolo and it worked flawless at the first connect. No fancy boot mode selection.
Any comments are appreciated.
Regards
Falk