Swap GPIO pins to Plasma header defaults

README.md

@@ -69,8 +69,6 @@ sudo pip2 install plasmalights
 
 ### Using Plasma Daemon
 
-Note: If you're using Picade Player X you should edit daemon/etc/systemd/system/plasma.service and change the output device option from `-o GPIO:14:15` to `-o SERIAL:/dev/ttyACM0`. If you're using Unicorn HAT or pHAT you should use `-o WS281X:WS2812:18:0`.
-
 To install the Plasma daemon you should clone this repository, navigate to the "daemon" directory and run the installer:
 
 ```
@@ -79,6 +77,14 @@ cd plasma/daemon
 sudo ./install
 ```
 
+---
+
+Note: If you're using Picade Player X you should edit daemon/etc/systemd/system/plasma.service and change the output device option from `-o GPIO:15:14` to `-o SERIAL:/dev/ttyACM0`. If you're using Unicorn HAT or pHAT you should use `-o WS281X:WS2812:18:0`.
+
+If you're using GPIO on a Picade HAT you can adjust the pins accordingly using `-o GPIO:<data>:<clock>` where data and clock are valid BCM pins. If you're using the old Plasma/Hack header you may need to swap from `-o GPIO:15:14` to `-o GPIO:14:15` depending on how your connections are wired.
+
+---
+
 The Plasma daemon installer installs two programs onto your Raspberry Pi. `plasma` itself and a tool called `plasmactl` you can use to install and switch lighting effects. Plasma runs as a service on your system.
 
 `plasmactl` commands:

daemon/etc/systemd/system/plasma.service

@@ -5,7 +5,7 @@ After=local-fs.target
 
 [Service]
 # Change -o to SERIAL:/dev/ttyACM0 for Plasma via Picade Player X
-ExecStart=/usr/bin/plasma -d -o GPIO:14:15
+ExecStart=/usr/bin/plasma -d -o GPIO:15:14
 Restart=on-failure
 Type=forking
 PIDFile=/var/run/plasma.pid

daemon/usr/bin/plasma

@@ -146,7 +146,8 @@ def options():
                       help="set plasma LED update framerate")
     parser.add_option("-l", "--lights", action="store", dest="lights", type="int", default=LIGHTS,
                       help="set number of lights in your plasma chain")
-    parser.add_option("-o", "--device", default="GPIO:14:15")
+    parser.add_option("-o", "--device", default="GPIO:15:14",
+                      help="set output device, default is GPIO, BCM15 = Data, BCM14 = Clock")
     return parser.parse_args()[0]