Changes between Version 1 and Version 2 of expansion/gw16130

Timestamp:

04/17/2019 05:51:48 PM (6 years ago)

Author:

Ryan Erbstoesser

Comment:

add providers and gpio information

expansion/gw16130

@@ -1 +1 @@
 = GW16130 Iridium Satellite Modem =
+[[PageOutline]]
+
+GW16130 = GW16127 Mini-PCIe carrier + Iridium 9603 modem module
+
+Iridium 9602/9603 SBD (short burst data) modem is capable of transmitting ASCII or Binary messages in packets of up to 340 bytes, and receiving packets of up to 270 bytes.
+
+== Modem Activation ==
+
+Modems need to be activated via an approved Iridium carrier / provider. 
+
+During the activation, the modem is configured for the destination of the messages:
+ * Direct IP
+ * Email address
+ * Another modem
+
+Some providers found on the internet, but not endorsed or approved by Gateworks:
+ * https://www.northernaxcess.com/sbd-short-burst-data-airtime-plans
+ * https://satellitephonestore.com/iridium-sdb
+ * https://www.satphonestore.com/airtime/iridium-sbd.html
+ * http://www.rock7mobile.com/products-rockblock-9603
+ * http://www.nalresearch.com/Airtime.html#Short%20Burst%20Data%20(Standard%20Plan)
+
+
+
+== FTDI GPIO Control ==
+
+An FTDI FT231XQ USB UART Chip is used to communicate with the Iridium Satcom modem via its UART.
+
+The FTDI GPIO pins control the modem:
+
+CBUS0: SAT_ON (input to modem; 10k pull-down)
+CBUS1: SAT_FND (output from modem)
+CBUS2: SAT_SUPPLY_OUT (output from modem)
+CBUS3: not connected
+
+Configure GPIO:
+{{{
+base=$(for i in $(ls -1d /sys/class/gpio/gpiochip*); do [ "ftdi-cbus" = "$(cat $i/label)" ] && cat $i/base; done)
+[ "$base" ] || { echo "Error: could not find ftdi-cbus device"; }
+echo $((base+0)) > /sys/class/gpio/export
+echo out > /sys/class/gpio/gpio$((base+0))/direction
+echo 1 > /sys/class/gpio/gpio$((base+0))/value # enable modem
+echo $((base+1)) > /sys/class/gpio/export
+echo in > /sys/class/gpio/gpio$((base+1))/direction
+echo $((base+2)) > /sys/class/gpio/export
+echo in > /sys/class/gpio/gpio$((base+2))/direction
+}}}