Started following some tutorial on att85 usi. Downloaded example code from make avr book.

Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare7.h

@@ -0,0 +1,34 @@
+int8_t fullSquare7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};