Add Pi Unicorn Hat node

hardware/unicorn/unihat.py

@@ -0,0 +1,46 @@
+#!/usr/bin/python
+#
+# Copyright 2016 IBM Corp.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Import library functions we need
+import sys
+import os
+import unicornhat as UH
+
+if sys.version_info >= (3,0):
+    print("Sorry - currently only configured to work with python 2.x")
+    sys.exit(1)
+
+brightness = float(sys.argv[1])/100
+UH.off()
+UH.brightness(brightness)
+
+while True:
+    try:
+        data = raw_input()
+        if len(data) < 20:
+            if data[0] == "B":
+                UH.brightness(float(data[1:])/100)
+            if data[0] == "R":
+                UH.rotation(float(data[1:]))
+        else:
+            q = 0
+            for p in range(64):
+                UH.set_pixel(p%8,int(p/8),ord(data[q]),ord(data[q+1]),ord(data[q+2]))
+                q+=3
+            UH.show()
+    except (EOFError, SystemExit):  # hopefully always caused by us sigint'ing the program
+        sys.exit(0)
+    except Exception as ex:
+        print "bad data: "+data