notes

Documentation/notes/GPRS-Notes.md

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+GPRS Notes
+===
+
+Raspberry Pi B
+
+| RPi Pin | RPi GPIO | FONA |
+|-----|-----|------|
+| 1 | 3.3V | Vio |
+| 6 | Ground | Ground |
+| 8 | GPIO14 (TXD) | RX |
+| 10 | GPIO15 (RXD) | TX |
+
+RPi Initial Setup
+---
+
+`rpi-serial-console` script provided in this directory.
+
+```
+sudo bash
+rpi-serial-console disable
+apt-get update
+apt-get install-y ppp screen elinks minicom
+```
+
+Connect RPi to FONA once it's wired:
+
+```
+screen /dev/ttyAMA0 115200
+```
+
+or 
+
+```
+minicom -c on -D /dev/ttyAMA0 -b 115200
+```
+
+Make sure to turn off hardware flow control.
+
+PPP Config Setup
+---
+
+Still as root:
+
+```
+cat > /etc/ppp/peers/fona <<EOF
+connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs.fona -T internet
+115200
+noipdefault
+usepeerdns
+defaultroute
+persist
+noauth
+nocrtscts
+local
+EOF
+
+cat > /etc/ppp/chat/gprs.fona <<EOF
+# You can use this script unmodified to connect to cellular networks.
+# The APN is specified in the peers file as the argument of the -T command
+# line option of chat(8).
+
+# For details about the AT commands involved please consult the relevant
+# standard: 3GPP TS 27.007 - AT command set for User Equipment (UE).
+# (http://www.3gpp.org/ftp/Specs/html-info/27007.htm)
+
+ABORT           BUSY
+ABORT           VOICE
+ABORT           "NO CARRIER"
+ABORT           "NO DIALTONE"
+ABORT           "NO DIAL TONE"
+ABORT           "NO ANSWER"
+ABORT           "DELAYED"
+ABORT           "ERROR"
+
+# cease if the modem is not attached to the network yet
+ABORT           "+CGATT: 0"
+
+""              AT
+TIMEOUT         12
+OK              ATH
+OK              ATE1
+
+# +CPIN provides the SIM card PIN
+#OK             "AT+CPIN=1234"
+
+# +CFUN may allow to configure the handset to limit operations to
+# GPRS/EDGE/UMTS/etc to save power, but the arguments are not standard
+# except for 1 which means "full functionality".
+#OK             AT+CFUN=1
+
+OK              AT+CGDCONT=1,"IP","\T","",0,0
+OK              ATD*99#
+TIMEOUT         22
+CONNECT         ""
+EOF
+
+pon fona
+```
+
+Setup for Boot
+---
+
+Still as root:
+
+```
+cat > /etc/network/interfaces.d/fona <<EOF
+auto fona
+iface fona inet ppp
+  provider fona
+```
+
+
+References
+---
+
+* [TinySine 3G/GPRS/GSM Shield for Arduino with GPS - American version SIM5320A](http://www.tinyosshop.com/3g-gprs-gsm-shield-for-arduino-sim5320a)
+* [Youtube: Setting up Adafruit FONA on a Raspberry Pi](https://www.youtube.com/watch?v=NArpvpmmpUU)
+* [Adafruit: FONA Tether to Raspberry Pi](https://learn.adafruit.com/fona-tethering-to-raspberry-pi-or-beaglebone-black)
+* [Adafruit: ](https://learn.adafruit.com/adafruit-fona-3g-cellular-gps-breakout)
+* [Adafruit: Adafruit FONA 3G Cellular Breakout - American Version](https://www.adafruit.com/product/2687)
+* [Amazon: DIYmall RPi 3g GPRS GSM expansion board sim4320a](https://www.amazon.com/DIYmall-Raspberry-Expansion-SIM5320A-American/dp/B06Y3N1BD6/)

Documentation/notes/RPi-Notes.md

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+RPi Notes
+===
+
+Hardware
+---
+
+| Item | Description | Approx. Cost | Link |
+|------|-------------|--------------|------|
+| Padarsey 5" Touchscreen 800x480 TFT LCD, HDMI Interface | 5" (diagonal) touch screen with HDMI interface | $33 | [Amazon](https://www.amazon.com/gp/product/B07RZYYNMZ/)  |
+| Raspberry Pi 3 B+ | | $40 | [Amazon](https://www.amazon.com/Raspberry-Pi-MS-004-00000024-Model-Board/dp/B01LPLPBS8/) |
+
+Blanking screen
+---
+
+[src](https://superuser.com/questions/374637/how-to-turn-off-screen-with-shortcut-in-linux)
+
+```
+export DISPLAY=:0
+sleep 0.25
+xset dpms force off
+```

Documentation/notes/fona

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+# Example PPPD configuration for FONA GPRS connection on Debian/Ubuntu.
+
+# MUST CHANGE: Change the -T parameter value **** to your network's APN value.
+# For example if your APN is 'internet' (without quotes), the line would look like:
+# connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs -T internet"
+connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs -T ****"
+
+# MUST CHANGE: Uncomment the appropriate serial device for your platform below.
+# For Raspberry Pi use /dev/ttyAMA0 by uncommenting the line below:
+#/dev/ttyAMA0
+# For BeagleBone Black use /dev/ttyO4 by uncommenting the line below:
+#/dev/ttyO4
+
+# Speed of the serial line.
+115200
+
+# Assumes that your IP address is allocated dynamically by the ISP.
+noipdefault
+
+# Try to get the name server addresses from the ISP.
+usepeerdns
+
+# Use this connection as the default route to the internet.
+defaultroute
+
+# Makes PPPD "dial again" when the connection is lost.
+persist
+
+# Do not ask the remote to authenticate.
+noauth
+
+# No hardware flow control on the serial link with FONA
+nocrtscts
+
+# No modem control lines with FONA.
+local