Changes between Version 2 and Version 3 of expansion/gw16130

Timestamp:

04/17/2019 05:57:25 PM (5 years ago)

Author:

Ryan Erbstoesser

Comment:

add at commands

expansion/gw16130

@@ -24 +24 @@
 
 
-== FTDI GPIO Control ==
+== Turning on Modem ==
 
 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
+ * 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:
@@ -47 +46 @@
 echo in > /sys/class/gpio/gpio$((base+2))/direction
 }}}
+
+== Modem AT Commands
+The Iridium SBD modems communicate via AT commands over a UART (default 19200 baud)
+
+AT Commands via picocom: (only works if there is one ftdi device being used)
+{{{#!bash
+DEVICE=/dev/$(basename $(ls -d /sys/bus/usb/drivers/ftdi_sio/*/ttyUSB*))
+picocom $DEVICE -b 19200 --omap lfcr
+}}}
+
+AT Commands via shell: (only works if there is one ftdi device being used)
+{{{#!bash
+DEVICE=/dev/$(basename $(ls -d /sys/bus/usb/drivers/ftdi_sio/*/ttyUSB*))
+stty -F $DEVICE 19200 ignbrk -brkint -icrnl -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
+cat $DEVICE &
+at() { echo -n -e "$1\r" > $DEVICE; }
+at "AT+GMI" # Manufacturer Identification 'Iridium'
+at "AT+GMM" # Model Identification 'IRIDIUM 9600 Family SBD Transceiver'
+at "AT+GMR" # Revision details
+at "AT+GSN" # serial number (IEMI)
+at "AT+CSQ" # signal strength (0 to 5): '+CSQ:0'
+}}}
+
+Additional commands:
+ * Send message to configured email address in modem admin (described above in modem management)
+{{{
+AT&K0
+AT+SBDWT=Hello World
+AT+SBDIX
+}}}
+
+== Reference Links
+
+ * Drifting Buoy Project using 9603 http://mdbuoyproject.wixsite.com/default
+