GSM modem power on/off issues at gta01

[Werner Almesberger]

Sean Chiang wrote:
> the modem could be
> powered on|off by echo "1"|"0" > power_on repeatedly.

Great ! By the way, this information will also be valuable for
assessing our situation on GTA02, where we're having problems with
the GSM cut-off switch that was supposed to solve all power issues
for good.

> I still have problem when write AT at POFF to modem.

Could it be because you forgot to put an \r at the end of the
string ? :-)

- Werner