On Wed, May 7, 2014 at 6:06 PM, Samer Shatta <[email protected]> wrote: > Hello > i have beaglebone black Rev A5C that works correctly with the Serial debug > header > > yesterday i have bought a new beaglebone black Rev A6A (new BBB) , but when > i connect the serial FTDI debugger it didn't work at all > there is nothing displayed on the host terminal when the new BBB boot up > > i have tried to connect TX with RX from the debug header of the new BBB and > used minicom on the new BBB using with the following settings : > ttyO0 > 115200N1 > no hardware flow control > > > and try to write some chars , but nothing received , i think that the FTDI > debug header is not connected with the ttyO0 , i think that there is a > hardware bug from the BBB factory .
Are you certain you've got the hardware still setup properly (cable plugged in right direction, terminal software configured the same, etc)? If you have access to a scope, I suggest monitoring the line. Do you see the LEDs blink? Have you tried booting off of uSD? > > if what i think is true so , i have to redirect the u-boot console output to > another tty like ttyO4 , but i don't know how to do that . It might work to specify ttyO4 in the uenv.txt console= command line argument and add the config enablement to the device tree. If you are serious about this, I can break down a few of those steps for you. Of course, that would just move the kernel output, not the u-boot output. Much of the relevant config info is in: http://git.denx.de/?p=u-boot.git;a=blob;f=include/configs/am335x_evm.h (It is a bit of an odd legacy that the config is in am335x_evm, but it was to make the code common with several other boards.) > > please help . > > -- > 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 [email protected]. > For more options, visit https://groups.google.com/d/optout. -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
