uint8_t sine_wave[625] /* */ =
{
128, 168, 204, 232, 250, 255, 247, 226, 196, 158, 117, 78, 43, 17, 3, 1, 
12, 36, 68, 107, 148, 187, 219, 243, 254, 252, 238, 212, 177, 138, 97, 59, 
29, 8, 1, 5, 23, 51, 87 
};

/*
{
128, 148, 168, 187, 204, 219, 232, 243, 250, 254, 255, 252, 247, 238, 226, 212, 
196, 177, 158, 138, 117, 97, 78, 59, 43, 29, 17, 8, 3, 0, 1, 5, 
12, 23, 36, 51, 68, 87, 107, 128, 148, 168, 187, 204, 219, 232, 243, 250, 
254, 255, 252, 247, 238, 226, 212, 196, 177, 158, 138, 117, 97, 78, 59, 43, 
29, 17, 8, 3, 0, 1, 5, 12, 23, 36, 51, 68, 87, 107, 128, 148, 
168, 187, 204, 219, 232, 243, 250, 254, 255, 252, 247, 238, 226, 212, 196, 177, 
158, 138, 117, 97, 78, 59, 43, 29, 17, 8, 3, 0, 1, 5, 12, 23, 
36, 51, 68, 87, 107, 128, 148, 168, 187, 204, 219, 232, 243, 250, 254, 255, 
252, 247, 238, 226, 212, 196, 177, 158, 138, 117, 97, 78, 59, 43, 29, 17, 
8, 3, 0, 1, 5, 12, 23, 36, 51, 68, 87, 107, 
};
*/
/*
{
128, 133, 138, 143, 148, 153, 158, 163, 168, 173, 177, 182, 187, 191, 196, 200, 
204, 208, 212, 216, 219, 223, 226, 229, 232, 235, 238, 240, 243, 245, 247, 248, 
250, 251, 252, 253, 254, 255, 255, 255, 255, 255, 254, 253, 252, 251, 250, 249, 
247, 245, 243, 241, 238, 235, 233, 230, 227, 223, 220, 216, 212, 209, 205, 200, 
196, 192, 187, 183, 178, 173, 168, 164, 159, 154, 149, 143, 138, 133, 128, 123, 
118, 113, 108, 103, 98, 93, 88, 83, 78, 74, 69, 64, 60, 56, 52, 47, 
44, 40, 36, 33, 29, 26, 23, 20, 18, 15, 13, 11, 9, 7, 5, 4, 
3, 2, 1, 0, 0, 0, 0, 0, 1, 1, 2, 3, 5, 6, 8, 10, 
12, 14, 17, 19, 22, 25, 28, 31, 35, 38, 42, 46, 50, 54, 58, 63, 
67, 72, 76, 81, 86, 91, 96, 101, 106, 111, 116, 121, 126, 131, 136, 142, 
147, 152, 157, 162, 167, 171, 176, 181, 186, 190, 194, 199, 203, 207, 211, 215, 
218, 222, 225, 229, 232, 234, 237, 240, 242, 244, 246, 248, 250, 251, 252, 253, 
254, 254, 255, 255, 255, 255, 254, 254, 253, 252, 250, 249, 247, 245, 243, 241, 
239, 236, 233, 230, 227, 224, 221, 217, 213, 210, 206, 201, 197, 193, 188, 184, 
179, 174, 170, 165, 160, 155, 150, 145, 140, 135, 129, 124, 119, 114, 109, 104, 
99, 94, 89, 84, 79, 75, 70, 66, 61, 57, 53, 48, 45, 41, 37, 33, 
30, 27, 24, 21, 18, 16, 13, 11, 9, 7, 6, 4, 3, 2, 1, 1, 
0, 0, 0, 0, 1, 1, 2, 3, 4, 6, 7, 9, 11, 14, 16, 18, 
21, 24, 27, 30, 34, 37, 41, 45, 49, 53, 57, 62, 66, 71, 75, 80, 
85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 
165, 170, 175, 180, 184, 189, 193, 198, 202, 206, 210, 214, 218, 221, 225, 228, 
231, 234, 237, 239, 241, 244, 246, 248, 249, 251, 252, 253, 254, 254, 255, 255, 
255, 255, 254, 254, 253, 252, 251, 249, 248, 246, 244, 242, 239, 237, 234, 231, 
228, 225, 222, 218, 214, 210, 207, 202, 198, 194, 189, 185, 180, 176, 171, 166, 
161, 156, 151, 146, 141, 136, 131, 126, 120, 115, 110, 105, 100, 95, 90, 85, 
81, 76, 71, 67, 62, 58, 54, 49, 45, 42, 38, 34, 31, 28, 25, 22, 
19, 16, 14, 12, 10, 8, 6, 5, 3, 2, 1, 1, 0, 0, 0, 0, 
1, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 18, 21, 23, 26, 30, 
33, 37, 40, 44, 48, 52, 56, 61, 65, 69, 74, 79, 84, 88, 93, 98, 
103, 108, 113, 119, 124, 129, 134, 139, 144, 149, 154, 159, 164, 169, 174, 179, 
183, 188, 192, 197, 201, 205, 209, 213, 217, 220, 224, 227, 230, 233, 236, 238, 
241, 243, 245, 247, 249, 250, 252, 253, 254, 254, 255, 255, 255, 255, 255, 254, 
253, 252, 251, 250, 248, 246, 244, 242, 240, 237, 235, 232, 229, 226, 222, 219, 
215, 211, 208, 203, 199, 195, 191, 186, 181, 177, 172, 167, 162, 157, 152, 147, 
142, 137, 132, 127, 122, 117, 112, 106, 101, 96, 91, 87, 82, 77, 72, 68, 
63, 59, 55, 50, 46, 43, 39, 35, 32, 28, 25, 22, 20, 17, 14, 12, 
10, 8, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 1, 2, 3, 
4, 5, 7, 8, 10, 12, 15, 17, 20, 23, 26, 29, 32, 36, 39, 43, 
47, 51, 55, 59, 64, 68, 73, 78, 82, 87, 92, 97, 102, 107, 112, 117, 122 
};
* */


void setup() {
//for (uint16_t i=0; i<625;i++) sine_wave[i]=128 + 127.5 * sin(radians(360.0*4/625*i));
    pinMode(45, OUTPUT);
    pinMode(46, OUTPUT);
    TIMSK5 = 1 << TOIE5;
    //OCR5A = OCR5B = sine_wave[624];
    OCR5A = OCR5B = sine_wave[38];
    TCNT5 = 0;
    TCCR5A = (1 << COM5A1) | (1 << COM5B1) | (1 << COM5B0) | (1 << WGM50);
    TCCR5B = (1 << WGM52) | /*(1 << CS50) |*/ 2; //Mode5 Fast PWM, 8-bit  TOP 0xFF ; DIV 1
  // div1=1 div2=8 div3=64 div4=256 div5=1024 div0=stop
}


void loop(){}

//
ISR (TIMER5_OVF_vect) {
    static uint16_t  n(0);
    OCR5AL = OCR5BL = sine_wave[n++];
    //if (n >= 625) n = 0;
     if (n >= 39) n = 0;
}