> > *But I have a question. My BBB doesn't boot from a microSD, all LEDs come > on immediately and stay on. How can I connect to it in this state?* >
In a nutshell . . .uboot has control over the UART until it passes control over to the OS. > > *If I have a serial console connection to the BBB using the FTDI cable, > will I have to log in with a user name and password? Or will it behave as > if I had a monitor attached, and boot messages will simply appear on > screen?* > In short, no. You do not log in via the UART( serial ) console until the OS is loaded, and in a running state. Just before this happens, you will see the kernel boot "log". When the board first comes up, and uboot has control of the UART. It should start spitting out information related to what uboot is doing. *IF* you get nothing but "CCCCCCCCC . . ." then this means uboot was unable to find a suitable image to load. *I'm trying to determine if getting an FTDI cable will help debug this > failure to boot problem.* > You really do not have any other option. Aside from not bothering with it. But honestly, how many boards did you say you have ? If you plan on doing anything project wise with the boards. A serial debug adapter is pretty much a requirement. On Thu, Apr 30, 2015 at 6:11 AM, Tim M <[email protected]> wrote: > . > > > William, thanks for your help. I will have to buy a FTDI cable before I > can give this a try. > > But I have a question. My BBB doesn't boot from a microSD, all LEDs come > on immediately and stay on. How can I connect to it in this state? > > If I have a serial console connection to the BBB using the FTDI cable, > will I have to log in with a user name and password? Or will it behave as > if I had a monitor attached, and boot messages will simply appear on screen? > > I'm trying to determine if getting an FTDI cable will help debug this > failure to boot problem. > > Thanks for your help everyone. > > -- > 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.
