TS-7840 Nimbelink

The Nimbelink Cell Radio socket is intended for Nimbelink's Skywire embedded modems.

# Turn off both, only 1 can be on.
gpioset 3 16=0
gpioset 3 17=0

# For modems wanting 4V:
gpioset 16=1

# For modems wanting 3.3V:
gpioset 17=1

If your modem supports USB, this must be enabled.

gpioset 3 21=0

Note:

Some Nimbelink cell modems have a long startup and may not show up on USB for a minute before enumerating on USB.

Pin Description 1 NIMBEL_PWR (3.3V or 4V) 2 /dev/ttyS4 RXD 3 /dev/ttyS4 TXD 4 GND 5 NC 6 4.7V 7 USB+ 8 USB- 9 GND 10 GND 11 GND 12 /dev/ttyS4 CTS 13 NC 14 3.3V 15 GND 16 GND 17 NC 18 NC 19 NC 20 GND