More updates, GPIO pins!

5-9-17.md

@@ -0,0 +1,68 @@
+ I setup wiring on the Orange Pi but was unable to access it through a bridged internet interface.
+
+ I need another ethernet cable, I'm pausing at 11:05AM.
+
+ Resumed at 11:23 with ethernet cable, `arp` isn't giving me anything on where the Pi is.
+
+ You must plug in the ethernet to the Pi after plugging in power. Fing is a good network discovery tool. He ran fing twice before and after we plugged in the pi and ran diff on the two captures.
+
+AJ tested using a USB cable with exposed cables, Black = ground Red = multiverse
+
+He hooked them to the board to a resistor to the LED and it worked.
+
+Green = Black Yellow = Red
+
+We wired it up with pin 6 (ground and pin 2 VCC3.3V)
+
+Check the GPIOs in the kernel
+
+/sys/gpio/
+
+Find a GPIO already turned on.
+
+I want to setup rocket.chat. I followed these instructions and modified them for the Raspberry Pi https://rocket.chat/docs/installation/manual-installation/ubuntu/
+
+Install Node & NPM: `curl -fsSL bit.ly/node-installer | bash -s -- --no-dev-deps`
+
+Download: `wget https://releases.rocket.chat/latest/download`
+
+Decompress: `tar -xvzf download`
+
+```
+cd Rocket.Chat/programs/server
+npm install phantomjs
+npm install
+cd ..
+sudo ROOT_URL=http://your-host-name.com-as-accessed-from-internet/ \
+    MONGO_URL=mongodb://localhost:27017/rocketchat \
+    PORT=80 \
+    node main.js
+```
+
+Install MongoDB:
+
+```
+sudo apt-get update
+sudo apt-get install -y mongodb curl graphicsmagick
+```
+
+I had to deal with this issue on my Raspberry Pi:
+
+`gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory`
+
+`sudo apt-get install dirmngr`
+`sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10`
+
+# Install Snap on Raspi
+
+`echo "deb https://mm.gravedo.de/raspbian/ jessie main" > /etc/apt/sources.list.d/snapd.list`
+sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv B9465B841412DB3B
+apt update
+apt install -y snapd
+sudo snap install rocketchat-server
+sudo systemctl restart snap.rocketchat-server.rocketchat-mongo.service
+
+
+# Haraka on ORANGE_PI
+
+npm install -g Haraka

Orange-Pi-GPIO-pins.md

@@ -2,8 +2,6 @@ Search terms: printout, wiring diagram.
 
 Actual diagram:
 
-
-
 People who have done it: https://www.youtube.com/watch?v=KF1IJvINjYE
 https://www.youtube.com/watch?v=4zICevDOhr8
 
@@ -57,3 +55,43 @@ Adjust device default LEDs.
 Raspi example of LED lighting:
 
 https://thepihut.com/blogs/raspberry-pi-tutorials/27968772-turning-on-an-led-with-your-raspberry-pis-gpio-pins
+
+
+Orange Pi USB process: https://diyprojects.io/orange-pi-onelite-tutorial-use-gpio-python-pinouts/
+
+sudo apt-get update
+sudo apt-get upgrade -y
+sudo apt-get install python-dev -y
+sudo apt-get install python-pip -y
+sudo apt-get install -y python-setuptools
+pip install wheel
+pip install pyA20
+
+git clone https://github.com/duxingkei33/orangepi_PC_gpio_pyH3
+
+
+This didn't work, BUT, the below did:
+
+The general proceeding is described in https://linux-sunxi.org/GPIO
+
+The GPIO pins are accessed via the sysfs file system. For enabling a specific pin it has to be exported into /sys/class/gpio/export
+
+for pin PA1 the command would be echo 1 > sys/class/gpio/export. The pin number is calculated by the following formula :
+
+ (position of letter in alphabet - 1) * 32 + pin number
+
+PA1 has pin number ('A' is the 1st letter ) 1, PB2 has pin number 34 ('B' is 2nd letter ), PG7 has pin number 199( 'G' is 7th letter (7-1) * 32+7=199 )
+
+the positions on the physical header are different again, cf. the graphic below
+
+so for enabling PG7 that is pin 40 on the physical header can be used
+(# echo "out" >/sys/class/gpio/gpio5/direction first)
+  echo 199 > sys/class/gpio/export
+
+Then you can run `echo "1" >/sys/class/gpio/gpio2/value` to turn it on and `echo "0" >/sys/class/gpio/gpio2/value` to turn it off.
+
+https://stackoverflow.com/questions/46463724/accessing-gpio-on-orangepi-pc-plus-h3-on-armbian-3-4-113-and-newer
+
+https://diyprojects.io/orange-pi-onelite-tutorial-use-gpio-python-pinouts/
+
+https://forum.armbian.com/topic/1471-solved-difficulty-accessing-gpio-via-the-sunxi-gpio-export-interface/