/* Copyright 2016 Jack Humbert * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <avr/io.h> #include <avr/interrupt.h> #include <avr/pgmspace.h> #define SINE_LENGTH 2048 const uint8_t sinewave[] PROGMEM= //2048 values { 0x80,0x80,0x80,0x81,0x81,0x81,0x82,0x82, 0x83,0x83,0x83,0x84,0x84,0x85,0x85,0x85, 0x86,0x86,0x87,0x87,0x87,0x88,0x88,0x88, 0x89,0x89,0x8a,0x8a,0x8a,0x8b,0x8b,0x8c, 0x8c,0x8c,0x8d,0x8d,0x8e,0x8e,0x8e,0x8f, 0x8f,0x8f,0x90,0x90,0x91,0x91,0x91,0x92, 0x92,0x93,0x93,0x93,0x94,0x94,0x95,0x95, 0x95,0x96,0x96,0x96,0x97,0x97,0x98,0x98, 0x98,0x99,0x99,0x9a,0x9a,0x9a,0x9b,0x9b, 0x9b,0x9c,0x9c,0x9d,0x9d,0x9d,0x9e,0x9e, 0x9e,0x9f,0x9f,0xa0,0xa0,0xa0,0xa1,0xa1, 0xa2,0xa2,0xa2,0xa3,0xa3,0xa3,0xa4,0xa4, 0xa5,0xa5,0xa5,0xa6,0xa6,0xa6,0xa7,0xa7, 0xa7,0xa8,0xa8,0xa9,0xa9,0xa9,0xaa,0xaa, 0xaa,0xab,0xab,0xac,0xac,0xac,0xad,0xad, 0xad,0xae,0xae,0xae,0xaf,0xaf,0xb0,0xb0, 0xb0,0xb1,0xb1,0xb1,0xb2,0xb2,0xb2,0xb3, 0xb3,0xb4,0xb4,0xb4,0xb5,0xb5,0xb5,0xb6, 0xb6,0xb6,0xb7,0xb7,0xb7,0xb8,0xb8,0xb8, 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