Version 5 (modified by 5 years ago) ( diff ) | ,
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GW16130 Iridium Satellite Modem
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)
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
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
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)
DEVICE=/dev/$(basename $(ls -d /sys/bus/usb/drivers/ftdi_sio/*/ttyUSB*)) picocom $DEVICE -b 19200 --omap lfcr
AT Commands via shell: (only works if there is one ftdi device being used)
DEVICE=/dev/$(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 on Modem (to destination configured in modem admin where modem is registered)
AT&K0 AT+SBDWT=Hello World AT+SBDIX
Reference Links
- Iridium 9603 https://www.iridium.com/products/iridium-9603/
- Iridium 9603 AT Commands https://www.google.com/search?q=iridium+9603+at+commands
- Drifting Buoy Project using 9603 http://mdbuoyproject.wixsite.com/default
Attachments (6)
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GW16130_Pinout.png
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Mini-PCIe Edge Finger Pinout
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GW16130.png
(1.0 MB
) - added by 5 years ago.
GW16130 Mini-PCIe Satellite Modem
- gw16127-antenna.png (19.5 KB ) - added by 5 years ago.
- 16130-block-diagram.png (37.9 KB ) - added by 5 years ago.
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ftx_prog
(26.6 KB
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ftx_prog compiled for Newport Ubuntu Bionic with 4.14 kernel
- GW16130.jpg (96.4 KB ) - added by 5 years ago.
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