we have designed a board based on the XL216 processor with a XSYS connector on the board. We have only used the JTAG lines (nRST, TMS, TCK TDI and TDO), not XLINK but I think this OK, since we have older designs with XS1-L16 processors working like this since years.
Problem : we are unable to start the debugger when XTAG is connected to the processor.
When we open the debugger configuration window, we see "XMOS XTAG-3 connected to O[NWVVdfTZ]", so we assume that the XTAG is able to see the processor.
However, when we try to launch the application by the debugger, it stops immediately with the following error "Launching tester.xe has encountered a problem. Load failed"
A click on "details" button leads nowhere : "Load failed Please refer to http://www.xmos.com/knowledgebase/tools for more details" which is a page which does not exist anymore on XMOS website
The console reports :
connect --adapter-id NWVVdfTZ --jtagspeed 23
0x00000000 in ?? ()
Please refer to http://www.xmos.com/knowledgebase/tools for more details
We have tried to change the JTAG speed with different values : no success.
Power supplies are OK, the sequencing seems correct (a NCP303LSN30 to activate the 1V0 regulator and a NCP303LSN09 to activate the reset line)
So, right now, we have absolutely no idea where to look at...
If anybody has a suggestion...