I want to daisy chain a JTAG signal over several boards. I have a problem thou, after the last board, the TDO has to be returned as TDI. Earlier I have done this using a special PCB I push into the flex connector. I would prefer if I did not need this PCB but instead had some other way of linking it back.
One obvious way would be a jumper. But when its forgotten to be placed or is placed on several boards it takes the software developers days to find the reason why the JTAG does not work.
Has anyone had any creative idea on solving this?