Technologic Systems TS-7100 Series, Manual

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2/11/2020 TS-7100 - Technologic Systems Manuals
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12.3 CN16 XBee Socket
The XBEE header is intended for Digi XBEE modules, or Nimbelink's Skywire embedded modems
(https://nimbelink.com/embedded-modems/) .
For XBEE modules, these will use 3.3V and require USB to be disabled:
# Enable 3.3V
gpioset 7 6=0
# Turn off USB
gpioset 7 9=0
# Access /dev/ttymxc3
Nimbelink modules require settings for the specific modems. Verify in the datasheet of the modem appropriate for
your cell network to determine if the module uses USB. If not, verify the expected serial baud rate and settings.
Some modems need 3.3V power, and some modems expect a typical of 4V.
# For modules wanting 4V:
gpioset 7 6=1
# For modules wanting 3.3V:
gpioset 7 6=0
# Power can be turned off if this GPIO is configured as an input
# gpioget 7 6
# If your modem supports USB, this must be enabled.
gpioset 7 9=1
Note:
Some Nimbelink cell modems have a long startup and may not show up
on USB for a minute before enumerating on USB.
Serial based modems can be tested with picocom
# Verify the baud rate for your specific modem
picocom -b 921600 /dev/ttymxc3
With picocom type "AT" and press enter and it should return "OK". Press Ctrl+a+x to close picocom.
Pin Description
11 GND
12 /dev/ttymxc3 CTS
13 NC
Pin Description
10 GND
9 GND
8 USB-