added GPIO pinout document link

README.md

@@ -13,6 +13,7 @@ Scripts and documentation for setting up a Raspberry Pi (Zero W 1 or 2) for use
 - [Starting on Raspberry Pi Zero](https://reykjavik.instructure.com/courses/6589/pages/starting-on-raspberry-pi-zero-w)
 
 ## References and Links
+- [Sparkfun GPIO pinout](https://cdn.sparkfun.com/assets/learn_tutorials/6/7/6/PiZero_1.pdf)
 - [Guide to creating ssh keys](https://pimylifeup.com/raspberry-pi-ssh-keys/)  Of note, this guide is a little dated as it suggests using RSA keys and many people are moving toward EDCSA keys.
 - [Raspberry Pi Connect](https://connect.raspberrypi.com)
     - [Setting up Raspberry Pi Connect](https://www.raspberrypi.com/documentation/services/connect.html)	

Scripts/gadget.sh

@@ -3,33 +3,20 @@
 # "Using OTG mode on Raspberry Pi SBCs"
 # https://pip-assets.raspberrypi.com/categories/685-app-notes-guides-whitepapers/documents/RP-009276-WP/Using-OTG-mode-on-Raspberry-Pi-SBCs
 
-# This script only works if you are running it as root
-if [ $(id -u) -ne 0 ]; then
-    echo "Please run as root or use sudo"
-    exit 1
-fi
-
-
 # Is the dwc2 overlay installed?  Nothing will work if it isn't.
+LOGGER="systemd-cat -t gadget.sh"
 if lsmod | grep -q "dwc2"; then
-    echo "DWC2 module loaded, setting up OTG gadget serial and ethernet" | logger -t $0 -p info
+    $LOGGER -p info "DWC2 module loaded, setting up OTG gadget serial and ethernet"
-    echo "DWC2 module loaded"
 else
-    echo "DWC2 module missing.  Aborting OTG setup." | logger -t $0 -p info
+    $LOGGER -p warning "DWC2 module missing.  Aborting OTG setup"
-    echo "DWC2 module missing"
-    systemctl disable serial-getty@ttyGS0.service
     exit 1
 fi
 
-modprobe libcomposite
+
+sudo modprobe libcomposite
 cd /sys/kernel/config/usb_gadget
-if [ -d "MyGadget" ]; then
-    echo "MyGadget already exists.  Aborting OTG setup." | logger -t $0 -p info
-    exit 1
-fi
-
 # Create our new gadget
-mkdir MyGadget
+sudo mkdir MyGadget
 cd MyGadget
 # Add some boilerplate data that the gadget needs
 echo 0x1d6b > idVendor # Linux Foundation’s USB VID. Replace with your own VID if required
@@ -54,7 +41,6 @@ echo "Config 1" > configs/c.1/strings/0x409/configuration
 ###  Remember to create the storage block device first
 ##  cd /root
 ### Example: Make a 256 MB file to act as "USB stick"
-##  Only create it once or it will delete the previous content
 ##  sudo dd if=/dev/zero of=drive.bin bs=1M count=256
 ### Create a VFAT file system on the backing store
 ##  sudo mkfs.vfat drive.bin
@@ -78,6 +64,3 @@ ln -s functions/ecm.usb0 configs/c.1/
 ## USB Device Controller update
 UDC=`ls /sys/class/udc`
 echo $UDC > UDC
-
-# Enable the gettys
-systemctl enable serial-getty@ttyGS0.service