cu: Permission denied

luca pisani luca.pisani at
Tue Dec 9 02:47:44 CET 2008

picocom starts the connection, some cmd works like help, but when I try 
to put:
s  setenv bootcmd setenv bootargs \${bootargs_base} \${mtdparts}\; nand 
read.e 0x32000000 kernel 0x300000\;
bootm 0x32000000
It hangs....

Bye luca

root at birdo:~/system2/Utility/picocom-1.4# ./picocom /dev/ttyACM0
picocom v1.4

port is        : /dev/ttyACM0
flowcontrol    : none
baudrate is    : 9600
parity is      : none
databits are   : 8
escape is      : C-a
noinit is      : no
noreset is     : no
nolock is      : no
send_cmd is    : ascii_xfr -s -v -l10
receive_cmd is : rz -vv

Terminal ready
In:    usbtty
Out:   usbtty
Err:   usbtty
Unrecognized hardware revision 0x305. Defaulting to GTA02v6.
PCB rev: 0x305
Power: 1000mA
GTA02v6 # setenv bootcmd setenv bootargs \${

Timo Juhani Lindfors wrote:
> luca pisani <luca.pisani at> writes:
>> root at birdo:~# cu -l /dev/ttyACM0
>> cu: creat (/var/lock/TMP0000000e56): Permission denied
>> cu: /dev/ttyACM0: Line in use
> What if you try "picocom /dev/ttyACM0" instead of cu?
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