Le Monday 24 August 2015, Graham a écrit : > There is a compromise between the value of the resistors used for boot > programming, > and the permanent load they put on the I/O system during operational I/O. > > So, yes, you can lower the value of the programming resistors, if it > both solves your > boot problem, and does not disturb the way the I/O works when the system > is in normal > operation. At some point it will. The output drive capability of the > GPIO on the Sitara > is limited. Make sure you understand it. > > And make sure you are allowing for noise margin on both the boot logic > signals and your > operating logic signals. A battery powered motor and servo system can > have a lot of > electrical noise, both on the power and the ground system. If you have > system noise > getting into the boot and control logic, you end up with intermittent > problems that > are extremely hard to debug.
Thanks for the advices! I'll make some tests. -- Frédéric -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.