150 lines
No EOL
7.1 KiB
C++
150 lines
No EOL
7.1 KiB
C++
/ CC-by-www.Electrosmash.com
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// Based on OpenMusicLabs and GFB previous works.
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// pedalshield_uno_signal_generator.ino plays a waveform stores in memory (waveform[])
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// pressing the pushbutton_1 or 2 changes the frequency.
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const byte waveform[]=
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{0x80,0x80,0x81,0x82,0x83,0x83,0x84,0x85,0x86,0x87,0x87,0x88,0x89,0x8a,0x8a,0x8b,
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0x8c,0x8d,0x8e,0x8e,0x8f,0x90,0x91,0x91,0x92,0x93,0x94,0x95,0x95,0x96,0x97,0x98,
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0x98,0x99,0x9a,0x9b,0x9b,0x9c,0x9d,0x9e,0x9f,0x9f,0xa0,0xa1,0xa2,0xa2,0xa3,0xa4,
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0xa5,0xa5,0xa6,0xa7,0xa8,0xa8,0xa9,0xaa,0xaa,0xab,0xac,0xad,0xad,0xae,0xaf,0xb0,
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0xb0,0xb1,0xb2,0xb2,0xb3,0xb4,0xb5,0xb5,0xb6,0xb7,0xb7,0xb8,0xb9,0xba,0xba,0xbb,
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0xbc,0xbc,0xbd,0xbe,0xbe,0xbf,0xc0,0xc0,0xc1,0xc2,0xc2,0xc3,0xc4,0xc4,0xc5,0xc6,
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0xc6,0xc7,0xc8,0xc8,0xc9,0xca,0xca,0xcb,0xcc,0xcc,0xcd,0xcd,0xce,0xcf,0xcf,0xd0,
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0xd0,0xd1,0xd2,0xd2,0xd3,0xd3,0xd4,0xd5,0xd5,0xd6,0xd6,0xd7,0xd7,0xd8,0xd9,0xd9,
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0xda,0xda,0xdb,0xdb,0xdc,0xdc,0xdd,0xde,0xde,0xdf,0xdf,0xe0,0xe0,0xe1,0xe1,0xe2,
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0xe2,0xe3,0xe3,0xe4,0xe4,0xe5,0xe5,0xe6,0xe6,0xe6,0xe7,0xe7,0xe8,0xe8,0xe9,0xe9,
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0xea,0xea,0xea,0xeb,0xeb,0xec,0xec,0xed,0xed,0xed,0xee,0xee,0xef,0xef,0xef,0xf0,
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0xf0,0xf0,0xf1,0xf1,0xf1,0xf2,0xf2,0xf2,0xf3,0xf3,0xf3,0xf4,0xf4,0xf4,0xf5,0xf5,
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0xf5,0xf6,0xf6,0xf6,0xf7,0xf7,0xf7,0xf7,0xf8,0xf8,0xf8,0xf8,0xf9,0xf9,0xf9,0xf9,
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0xfa,0xfa,0xfa,0xfa,0xfa,0xfb,0xfb,0xfb,0xfb,0xfb,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,
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0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
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0xfe,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,
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0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,
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0xfd,0xfc,0xfc,0xfc,0xfc,0xfc,0xfb,0xfb,0xfb,0xfb,0xfb,0xfb,0xfa,0xfa,0xfa,0xfa,
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0xf9,0xf9,0xf9,0xf9,0xf8,0xf8,0xf8,0xf8,0xf7,0xf7,0xf7,0xf7,0xf6,0xf6,0xf6,0xf5,
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0xf5,0xf5,0xf5,0xf4,0xf4,0xf4,0xf3,0xf3,0xf3,0xf2,0xf2,0xf2,0xf1,0xf1,0xf1,0xf0,
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0xf0,0xef,0xef,0xef,0xee,0xee,0xee,0xed,0xed,0xec,0xec,0xeb,0xeb,0xeb,0xea,0xea,
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0xe9,0xe9,0xe8,0xe8,0xe8,0xe7,0xe7,0xe6,0xe6,0xe5,0xe5,0xe4,0xe4,0xe3,0xe3,0xe2,
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0xe2,0xe1,0xe1,0xe0,0xe0,0xdf,0xdf,0xde,0xde,0xdd,0xdd,0xdc,0xdc,0xdb,0xdb,0xda,
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0xd9,0xd9,0xd8,0xd8,0xd7,0xd7,0xd6,0xd5,0xd5,0xd4,0xd4,0xd3,0xd3,0xd2,0xd1,0xd1,
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0xd0,0xd0,0xcf,0xce,0xce,0xcd,0xcc,0xcc,0xcb,0xcb,0xca,0xc9,0xc9,0xc8,0xc7,0xc7,
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0xc6,0xc5,0xc5,0xc4,0xc3,0xc3,0xc2,0xc1,0xc1,0xc0,0xbf,0xbf,0xbe,0xbd,0xbd,0xbc,
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0xbb,0xbb,0xba,0xb9,0xb9,0xb8,0xb7,0xb6,0xb6,0xb5,0xb4,0xb4,0xb3,0xb2,0xb1,0xb1,
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0xb0,0xaf,0xaf,0xae,0xad,0xac,0xac,0xab,0xaa,0xa9,0xa9,0xa8,0xa7,0xa6,0xa6,0xa5,
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0xa4,0xa3,0xa3,0xa2,0xa1,0xa0,0xa0,0x9f,0x9e,0x9d,0x9d,0x9c,0x9b,0x9a,0x9a,0x99,
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0x98,0x97,0x96,0x96,0x95,0x94,0x93,0x93,0x92,0x91,0x90,0x90,0x8f,0x8e,0x8d,0x8c,
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0x8c,0x8b,0x8a,0x89,0x88,0x88,0x87,0x86,0x85,0x85,0x84,0x83,0x82,0x81,0x81,0x80,
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0x7f,0x7e,0x7e,0x7d,0x7c,0x7b,0x7a,0x7a,0x79,0x78,0x77,0x77,0x76,0x75,0x74,0x73,
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0x73,0x72,0x71,0x70,0x6f,0x6f,0x6e,0x6d,0x6c,0x6c,0x6b,0x6a,0x69,0x69,0x68,0x67,
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0x66,0x65,0x65,0x64,0x63,0x62,0x62,0x61,0x60,0x5f,0x5f,0x5e,0x5d,0x5c,0x5c,0x5b,
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0x5a,0x59,0x59,0x58,0x57,0x56,0x56,0x55,0x54,0x53,0x53,0x52,0x51,0x50,0x50,0x4f,
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0x4e,0x4e,0x4d,0x4c,0x4b,0x4b,0x4a,0x49,0x49,0x48,0x47,0x46,0x46,0x45,0x44,0x44,
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0x43,0x42,0x42,0x41,0x40,0x40,0x3f,0x3e,0x3e,0x3d,0x3c,0x3c,0x3b,0x3a,0x3a,0x39,
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0x38,0x38,0x37,0x36,0x36,0x35,0x34,0x34,0x33,0x33,0x32,0x31,0x31,0x30,0x2f,0x2f,
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0x2e,0x2e,0x2d,0x2c,0x2c,0x2b,0x2b,0x2a,0x2a,0x29,0x28,0x28,0x27,0x27,0x26,0x26,
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0x25,0x24,0x24,0x23,0x23,0x22,0x22,0x21,0x21,0x20,0x20,0x1f,0x1f,0x1e,0x1e,0x1d,
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0x1d,0x1c,0x1c,0x1b,0x1b,0x1a,0x1a,0x19,0x19,0x18,0x18,0x17,0x17,0x17,0x16,0x16,
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0x15,0x15,0x14,0x14,0x14,0x13,0x13,0x12,0x12,0x11,0x11,0x11,0x10,0x10,0x10,0xf,
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0xf,0xe,0xe,0xe,0xd,0xd,0xd,0xc,0xc,0xc,0xb,0xb,0xb,0xa,0xa,0xa,
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0xa,0x9,0x9,0x9,0x8,0x8,0x8,0x8,0x7,0x7,0x7,0x7,0x6,0x6,0x6,0x6,
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0x5,0x5,0x5,0x5,0x4,0x4,0x4,0x4,0x4,0x4,0x3,0x3,0x3,0x3,0x3,0x2,
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0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,
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0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,
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0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,
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0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,
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0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x8,0x9,0x9,0x9,0xa,
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0xa,0xa,0xb,0xb,0xb,0xc,0xc,0xc,0xd,0xd,0xd,0xe,0xe,0xe,0xf,0xf,
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0xf,0x10,0x10,0x10,0x11,0x11,0x12,0x12,0x12,0x13,0x13,0x14,0x14,0x15,0x15,0x15,
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0x16,0x16,0x17,0x17,0x18,0x18,0x19,0x19,0x19,0x1a,0x1a,0x1b,0x1b,0x1c,0x1c,0x1d,
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0x1d,0x1e,0x1e,0x1f,0x1f,0x20,0x20,0x21,0x21,0x22,0x23,0x23,0x24,0x24,0x25,0x25,
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0x26,0x26,0x27,0x28,0x28,0x29,0x29,0x2a,0x2a,0x2b,0x2c,0x2c,0x2d,0x2d,0x2e,0x2f,
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0x2f,0x30,0x30,0x31,0x32,0x32,0x33,0x33,0x34,0x35,0x35,0x36,0x37,0x37,0x38,0x39,
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0x39,0x3a,0x3b,0x3b,0x3c,0x3d,0x3d,0x3e,0x3f,0x3f,0x40,0x41,0x41,0x42,0x43,0x43,
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0x44,0x45,0x45,0x46,0x47,0x48,0x48,0x49,0x4a,0x4a,0x4b,0x4c,0x4d,0x4d,0x4e,0x4f,
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0x4f,0x50,0x51,0x52,0x52,0x53,0x54,0x55,0x55,0x56,0x57,0x57,0x58,0x59,0x5a,0x5a,
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0x5b,0x5c,0x5d,0x5d,0x5e,0x5f,0x60,0x60,0x61,0x62,0x63,0x64,0x64,0x65,0x66,0x67,
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0x67,0x68,0x69,0x6a,0x6a,0x6b,0x6c,0x6d,0x6e,0x6e,0x6f,0x70,0x71,0x71,0x72,0x73,
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0x74,0x75,0x75,0x76,0x77,0x78,0x78,0x79,0x7a,0x7b,0x7c,0x7c,0x7d,0x7e,0x7f,0x80,
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};
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//defining harware resources.
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#define LED 13
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#define FOOTSWITCH 12
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#define TOGGLE 2
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#define PUSHBUTTON_1 A5
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#define PUSHBUTTON_2 A4
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//defining the output PWM parameters
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#define PWM_FREQ 0x00FF // pwm frequency - 31.3KHz
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#define PWM_MODE 0 // Fast (1) or Phase Correct (0)
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#define PWM_QTY 2 // 2 PWMs in parallel
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//other variables
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int input,inputa,inputb, speed=1;
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int counter=0;
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int sample=0;
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void setup() {
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//setup IO
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pinMode(FOOTSWITCH, INPUT_PULLUP);
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pinMode(TOGGLE, INPUT_PULLUP);
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pinMode(PUSHBUTTON_1, INPUT_PULLUP);
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pinMode(PUSHBUTTON_2, INPUT_PULLUP);
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pinMode(LED, OUTPUT);
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// setup ADC
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ADMUX = 0x60; // left adjust, adc0, internal vcc
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ADCSRA = 0xe5; // turn on adc, ck/32, auto trigger
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ADCSRB = 0x07; // t1 capture for trigger
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DIDR0 = 0x01; // turn off digital inputs for adc0
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// setup PWM
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TCCR1A = (((PWM_QTY - 1) << 5) | 0x80 | (PWM_MODE << 1)); //
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TCCR1B = ((PWM_MODE << 3) | 0x11); // ck/1
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TIMSK1 = 0x20; // interrupt on capture interrupt
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ICR1H = (PWM_FREQ >> 8);
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ICR1L = (PWM_FREQ & 0xff);
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DDRB |= ((PWM_QTY << 1) | 0x02); // turn on outputs
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sei(); // turn on interrupts - not really necessary with arduino
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}
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void loop()
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{
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//Turn on the LED if the effect is ON.
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if (digitalRead(FOOTSWITCH)) digitalWrite(LED, HIGH);
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else digitalWrite(LED, LOW);
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//nothing else here, all happens in the Timer 1 interruption.
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}
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ISR(TIMER1_CAPT_vect)
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{
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counter++; //to save resources, the pushbuttons are checked every 5000 times.
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if(counter==5000)
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{
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counter=0;
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if (!digitalRead(PUSHBUTTON_2)) {
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if (speed<1024)speed=speed+1; //increase the vol
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digitalWrite(LED, LOW); //blinks the led
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}
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if (!digitalRead(PUSHBUTTON_1)) {
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if (speed>0)speed=speed-1; //decrease vol
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digitalWrite(LED, LOW); //blinks the led
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}
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}
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input = waveform[sample];
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sample=sample+speed;
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if(sample>1023)sample=0;
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//write the PWM signal
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OCR1AL =waveform[sample];// (((input + 0x08000)) >> 8); // convert to unsigned, send out high byte
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OCR1BL = waveform[sample]; // send out low byte
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} |