Diff: sineTable.h

Revision:

2:9e3a110b66ee

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sineTable.h	Fri Feb 09 15:57:42 2018 +0000
@@ -0,0 +1,15 @@
+// Look up table for a sine wave as 16 bits
+// Note that it is possible to construct the full period from 
+//   the first quarter, but the code is more complex
+//
+// These number were calcuated using a spreadsheet 
+const uint16_t sine[] = {
+    32768, 35980, 39161, 42280, 45308, 48215, 50973, 53556, 
+    55938, 58098, 60014, 61667, 63042, 64125, 64906, 65378, 
+    65535, 65378, 64906, 64125, 63042, 61667, 60014, 58098,
+    55938, 53556, 50973, 48215, 45308, 42280, 39161, 35980,
+    32768, 29556, 26375, 23256, 20228, 17321, 14563, 11980,
+     9598,  7438,  5522,  3869,  2494,  1411,   630,   158, 
+        0,   158,   630,  1411,  2494,  3869,  5522,  7438,
+     9598, 11980, 14563, 17321, 20228, 23256, 26375, 29556
+    } ;
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