buenas
estoy creando un pedal de efectos para guitarra que tenga una pantalla, que muestre el nombre del efecto y como aumentar el gain o modo, me estoy basando en el pedalshield mega, pero no se como hacer el código ya que en la pagina no esta bien explicado, al colocar este código:
// CC-by-NC-www.Electrosmash.com/rights
// Based on OpenMusicLabs previous works.
// pedalshield_mega_multi.ino creates different effects in the same code
// pressing the pushbutton_1 or 2 (while toggle switch is down) change the effect.
#include "U8glib.h"
U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NO_ACK); // Display which does not send ACK
//defining harware resources.
#define LED 13
#define FOOTSWITCH 12
#define TOGGLE 2
#define PUSHBUTTON_1 A5
#define PUSHBUTTON_2 A4
//defining the output PWM parameters
#define PWM_FREQ 0x00FF // pwm frequency - 31.3KHz
#define PWM_MODE 0 // Fast (1) or Phase Correct (0)
#define PWM_QTY 2 // 2 PWMs in parallel
//other variables
int input,output; //initial value adjusted by try and error.
int vol_variable=10000;
int distortion_threshold=6000; //initial value adjusted by try and error
int bit_crush_variable=0;
#define MAX_DELAY 3000
unsigned int Delay_Buffer[MAX_DELAY];
unsigned int DelayCounter = 0;
unsigned int Delay_Depth = MAX_DELAY;
int counter=0;
unsigned int ADC_low, ADC_high, effect_type=1;
void setup() {
//setup IO
pinMode(FOOTSWITCH, INPUT_PULLUP);
pinMode(TOGGLE, INPUT_PULLUP);
pinMode(PUSHBUTTON_1, INPUT_PULLUP);
pinMode(PUSHBUTTON_2, INPUT_PULLUP);
pinMode(LED, OUTPUT);
pinMode(6, OUTPUT); //PWM0 as output
pinMode(7, OUTPUT); //PWM1 as output
// setup ADC
ADMUX = 0x60; // left adjust, adc0, internal vcc
ADCSRA = 0xe5; // turn on adc, ck/32, auto trigger
ADCSRB = 0x00; // ADC free running mode
DIDR0 = 0x01; // turn off digital inputs for adc0
// setup PWM
TCCR4A = (((PWM_QTY - 1) << 5) | 0x80 | (PWM_MODE << 1)); //
TCCR4B = ((PWM_MODE << 3) | 0x11); // ck/1
TIMSK4 = 0x20; // interrupt on capture interrupt
ICR4H = (PWM_FREQ >> 8);
ICR4L = (PWM_FREQ & 0xff);
DDRB |= ((PWM_QTY << 1) | 0x02); // turn on outputs
sei(); // turn on interrupts - not really necessary with arduino
}
void loop()
{
/SELECTION MODE*/
//enter in "selection effect mode", the program stays in this loop while the toggle switch is down
// you can change effect pushing buttons, the number of blinks will indicate the effect number
digitalWrite(LED, LOW); // switch-off the LED
while (digitalRead(TOGGLE) && digitalRead(FOOTSWITCH))
{
digitalWrite(LED, HIGH); //light the LED
if (!digitalRead(PUSHBUTTON_2))
{
if (effect_type<4) effect_type++;
}
else if (!digitalRead(PUSHBUTTON_1))
{
if (effect_type>0) effect_type--;
}
//Write the OLED screen acording with the effect number
switch(effect_type)
{
case 1: //1st effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, " SELECTION");
u8g.drawStr( 0, 50, " DELAY ");
} while( u8g.nextPage() );
break;
case 2: //2nd effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, " SELECTION");
u8g.drawStr( 0, 50, "DISTORTION");
} while( u8g.nextPage() );
break;
case 3: //3rd effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, " SELECTION");
u8g.drawStr( 0, 50, "FUZZ");
} while( u8g.nextPage() );
break;
case 4: //4th effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, " SELECTION");
u8g.drawStr( 0, 50, "BIT CRUSHER");
} while( u8g.nextPage() );
break;
}
}
/NORMAL MODE*/
//Turn on the LED and write the OLED if the effect is ON.
if (digitalRead(FOOTSWITCH))
{
digitalWrite(LED, HIGH); //light the LED
switch(effect_type)
{
case 1: //1st effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, " DELAY ");
u8g.setPrintPos(10, 50);
u8g.setFont(u8g_font_helvR24r);
u8g.print(vol_variable);
} while( u8g.nextPage() );
break;
case 2: //2nd effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, "DISTORTION");
u8g.setPrintPos(10, 50);
u8g.setFont(u8g_font_helvR24r);
u8g.print(distortion_threshold);
} while( u8g.nextPage() );
break;
case 3: //3rd effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, "FUZZ");
u8g.setPrintPos(10, 50);
u8g.setFont(u8g_font_helvR24r);
u8g.print(distortion_threshold);
} while( u8g.nextPage() );
break;
case 4: //4th effect
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR14r);
u8g.drawStr( 0, 16, "BIT CRUSHER");
u8g.setPrintPos(10, 50);
u8g.setFont(u8g_font_helvR24r);
u8g.print(bit_crush_variable);
} while( u8g.nextPage() );
break;
}
}
else
{
// digitalWrite(LED, LOW); // switch-off the LED
u8g.firstPage();
do {
u8g.setFont(u8g_font_helvR24r);
u8g.drawStr( 0, 30, "EFFECT");
u8g.drawStr( 0, 60, " OFF ");
} while( u8g.nextPage() );
}
}
ISR(TIMER4_CAPT_vect)
{
// get ADC data
ADC_low = ADCL; // you need to fetch the low byte first
ADC_high = ADCH;
//construct the input sumple summing the ADC low and high byte.
input = ((ADC_high << 8) | ADC_low) + 0x8000; // make a signed 16b value
counter++; //to save resources, the pushbuttons are checked every 1000 times.
if(counter==2000)
{
counter=0;
if (!digitalRead(PUSHBUTTON_2)) {
if (vol_variable<32768)vol_variable=vol_variable+10; //increase the vol
if (distortion_threshold<32768)distortion_threshold=distortion_threshold+25; //increase the vol
if (bit_crush_variable<16)bit_crush_variable=bit_crush_variable+1; //increase the number of crushed bits
if (Delay_Depth<MAX_DELAY)Delay_Depth=Delay_Depth+1; //increase delay
digitalWrite(LED, LOW); //blinks the led
}
if (!digitalRead(PUSHBUTTON_1)) {
if (vol_variable>0)vol_variable=vol_variable-10; //decrease vol
if (distortion_threshold>0)distortion_threshold=distortion_threshold-25; //decrease vol
if (bit_crush_variable>0)bit_crush_variable=bit_crush_variable-1; //decrease the number of crushed bits
if (Delay_Depth>0)Delay_Depth=Delay_Depth-1; //decrease delay
digitalWrite(LED, LOW); //blinks the led
}
}
//**** EFFECT AREA***///
// The effects are selected depending on effect type.
switch(effect_type)
{
case 1:
/**** DELAY EFFECT ***/
//The input_signal is stored and played using a circular buffer
Delay_Buffer[DelayCounter] = (((ADC_high << 8) | ADC_low) + 0x8000);
DelayCounter++;
if(DelayCounter >= Delay_Depth) DelayCounter = 0;
output = (Delay_Buffer[DelayCounter] +(((ADC_high << 8) | ADC_low) + 0x8000))>>1;
break;
case 2:
/**** DISTORTION EFFECT ***/
if(input>distortion_threshold) output=distortion_threshold;
else output=input;
break;
case 3:
/**** FUZZ EFFECT ***/
if(input>distortion_threshold) output=32768;
else if(input<-distortion_threshold) output=-32768;
else output=input;
break;
case 4:
/**** BIT CRUSHER EFFECT ***/
output = input<<bit_crush_variable;
break;
case 5://echo
/**** ECHO EFFECT ***/
Delay_Buffer[DelayCounter] = (input + Delay_Buffer[DelayCounter])>>1;
DelayCounter++;
if(DelayCounter >= Delay_Depth) DelayCounter = 0;
output = (input + (Delay_Buffer[DelayCounter]))>>1;
break;
}
//write the PWM signal
OCR4AL = ((output + 0x8000) >> 8); // convert to unsigned, send out high byte
OCR4BL = output; // send out low byte
}
me aparece este error:
'TCCR4A' was not declared in this scope; no se como corregirlo o que hacer, cualquier ayuda que me den sera bien recibida, muchas gracias por su atención prestada