From ba64d2a6836ce4fbb39ce1d032a6bbb0d48668d1 Mon Sep 17 00:00:00 2001
From: optixx <david@optixx.org>
Date: Wed, 23 Sep 2009 18:55:31 +0200
Subject: [PATCH] add sinegen script

---
 scripts/sinegen.py | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 scripts/sinegen.py

diff --git a/scripts/sinegen.py b/scripts/sinegen.py
new file mode 100644
index 0000000..a1df00e
--- /dev/null
+++ b/scripts/sinegen.py
@@ -0,0 +1,38 @@
+import string
+import math
+import sys
+
+M_PI = 3.14159265358979323846
+
+
+
+def sine(val,r,scale,stepping):
+    global M_PI,flip
+    re = int(math.sin(val*(M_PI*scale)/r)*r) + r
+    re = re & 0xff
+    re = re * stepping
+    return re
+
+
+def main():
+    cnt = 64
+    stepping = 1
+    upper = 0xff
+
+    s = "#define PWM_SINE_MAX %i\nuint8_t pwm_sine_table[] = {\n" % cnt
+    for i in range(0,cnt):
+        if i > 0 and i%16==0:
+            s+="\n"
+        s +="0x%02x,"  % sine(i,upper/2,(float(upper)/cnt),stepping)
+    s=s[:-1]
+    s+="\n};\n"
+    print s
+
+main()
+
+
+
+
+
+
+