• Registered: 2011-08-03
  • Posts: 1

Topic: Can boot CHB, but can't reach shell via serial port

Hello guys!

I bought CHB and got it shipped to me in Sweden a few weeks ago. My first goal was to get the serial port to works. I tried to follow the adafruit guide: http://www.ladyada.net/learn/chumby/serial.html, but the CHB seems to get stuck somewhere. I use a variable DC power supply 5V and current limited to 1.5 A at the moment. Below is the first and last few lines of output I get when rebooting the board.  I've tried to press "any key" to enter shell, but nothing happends.

Loading SD image...
                                                          
 
Reading 0x00000800 bytes from offset 0x0000b800 to destination 0x45a00000þ
     
Setting up LCD to point at 0x44844000
                                     
    
Reading 0x00000800 bytes from offset 0x0000b800 to destination 0x45a00000
      

                                                                        
     
Press any key to enter shell... 2
                                              
Press any key to enter shell... 1                                               

............................................

MANY LINES REMOVED HERE
............................................


FATAL: Module snd_soc_stmp3780_devb not found.
                                
[   23.130000] Chumby timerx[2] driver version 3.0-Falconwing initializing (bunn
ie@chumby.com)... show me your jiffies!!!
                                      
[   26.090000] input: stmp3xxx-rotdec as /devices/virtual/input/input2
         
[   27.420000] NET: Registered protocol family 10
                     
        
Starting chumbhowld service
                     
                             
Started chumbhowld 
                                                           
Adobe FlashLite 3.1.7 Release (Version 9,1,122,0)- Chumby Industries (version 9 
build 112-3320 [GCC 4.3.2])
                                                   
Portions copyright (C) 2005-2010 Chumby Industries, Inc.
                      
Built for: falconwing; Features: Video ALSA ARM-optimizations
                 
Build time: Wed 28Jul2010 1454
                                                
GetRegisteredInstancePid(/var/run/chumbyflashplayer.pid) returned 0 - no other i
nstance is running
                                                            
rcS completed at Wed Dec 31 16:03:22 PST 1969

Anyone has an idea what the problem could be?

Another thing I find strange is that I get several "can't open /dev/tty0: No such file or directory" is this normal?

I would greatly appreciate any help. Thank you in advance!

Kind regards,
Magnus

  • From: Australia
  • Registered: 2011-05-24
  • Posts: 92

Re: Can boot CHB, but can't reach shell via serial port

That all looks as expected, and the final line you have shown is the final line that should show until you press return.  After you press return you will get a console shell prompt like

chumby-:/ #

My first guess would be that either your serial console program isn't sending your key strokes (configuration?) or your serial cable doesn't have TX correctly connected.