Hi, I too have troubles with the iBob schematics. That's part of the reason why I use the Allegro free view to look at the place and route .brd file.
Yes J1 is connected to the Prog button. We connect J1 to a 2nd reset button on a remote card which is accessible when iBobs are mounted in a chassis. Works AOK. SW1.1 = J1.1 = PROG also wired to remote switch .1 SW1.2 = J1.2 = GND also wired to remote switch .2 Sorry at this time I have no thoughts on your programming troubles. Matt Dexter On Wed, 4 Jun 2008, G Jones wrote: > Hello, > After having trouble with my iBOBs becoming unresponsive to everything other > than the PROG button, I am considering using a digital IO device to remotely > toggle the PROG signal. I notice there is a header labeled J1 on the board > near the PROG button. Is this indeed connected to PROG? I looked in the iBOB > schematics, but the actual part numbers on the silkscreen do not seem to > show up in the schematics, but it does look like such a PROG header exists. > Just want to make sure. Has anyone used this header before? Any advice about > doing so? I am thinking of using either an open collector driver or an opto > isolator to ensure no high voltages are unintentionally connected to the > iBOB. > > I am still having trouble coming to grips with the fact that when the iBOB > becomes unresponsive, it is still possible to program it using iMPACT and > read back the status register showing that there was no CRC error and > programming completed successfully, yet the PowerPC is completely > unaccessible via Ethernet or RS232. After reading through the datasheets, it > does not seem like this should be possible. I would suspect some hardware > problem, except both iBOBs behave the same and both run fine once they are > reset. Is there some sort of race condition between the PowerPC clock and > the ADC clock that could cause this? > > Glenn >
