STW TC1 User Manual

6 Software
User Manual 48/374
Low Level Hardware Access
The modem interfaces are accessible over the symbolic link files /dev/mux0 and /dev/mux1:
Path
Input
information
Output
information
Description
/dev/mux0
-
-
This device is created per default.
Send/Receive AT-commands to GSM modem e.g. via
picocom
/dev/mux1
-
-
This device is created per default.
Send/Receive AT-commands to GSM modem e.g. via
picocom
Path
Input
information
Output information
Description
/proc/device-
tree/stw_gsm@00/device
-
Name of the modem
e.g. PHS8
This user space interface includes the name
of the modem.
/proc/device-
tree/stw_gsm@00/name
-
Interface name e.g.
stw_gsm
This user space interface includes the name
of the modem interface.
/proc/device-
tree/stw_gsm@00/port
-
Path to real
interface e.g.
/dev/ttyACM0
This user space interface includes the real
path to the modem serial interface.
/proc/stw_gsm/gsm_power
p1
-
This user space interface could be used in a
sequence depending on modem type to
switch the GSM modem on/off.
p1:
< 0 >
 triggers pin to low level
< 1 >
 triggers pin to high level
/proc/stw_gsm/gsm_port
-
-
Symlink for tty-device (/dev/ttyACM0) the
modem is connected to.
Send/Receive AT-Commands depending on
GSM modem type.
WARNING:
If one of these interfaces mux0/1 are used in data mode (GPRS connection is established), no AT
commands can be sent to the modem by using tools like picocom.

STW TC1 Specifications

General

Brand	STW
Model	TC1
Category	Controller
Language	English