1 files changed, 51 insertions, 0 deletions
diff --git a/calibrate.py b/calibrate.py
new file mode 100755
index 0000000..68efa41
--- /dev/null
+++ b/calibrate.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+Example for using Helios DAC libraries in python (using C library with ctypes)
+
+NB: If you haven't set up udev rules you need to use sudo to run the program for it to detect the DAC.
+"""
+
+import ctypes
+
+#Define point structure
+class HeliosPoint(ctypes.Structure):
+    #_pack_=1
+    _fields_ = [('x', ctypes.c_uint16),
+                ('y', ctypes.c_uint16),
+                ('r', ctypes.c_uint8),
+                ('g', ctypes.c_uint8),
+                ('b', ctypes.c_uint8),
+                ('i', ctypes.c_uint8)]
+
+#Load and initialize library
+HeliosLib = ctypes.cdll.LoadLibrary("./libHeliosDacAPI.dylib")
+numDevices = HeliosLib.OpenDevices()
+
+#WriteFrame(unsigned int dacNum, int pps, std::uint8_t flags, HeliosPoint* points, int numOfPoints);
+#in 1024 points:
+#scale up x from 0 to 100%
+#scale down y from 0 to 100%
+#scale R, G and B up from 0 to 255 4 times out of sync
+
+frames=[0 for x in range(1024)]
+r=0
+g=85
+b=170
+
+def inc8(m):
+    return (m+1)%256
+
+for i in range(1024):
+    frames[i]=HeliosPoint(i*16,16383-(i*16),r,g,b,0)
+    r=inc8(r)
+    g=inc8(g)
+    b=inc8(b)
+
+try:
+    while True:
+        HeliosLib.WriteFrame(0, 20000, 0, ctypes.pointer(frames[0]), 1024)
+except KeyboardInterrupt:
+    pass
+
+HeliosLib.CloseDevices()