Converting from Arduino to Processing

lscangus

Converting from Arduino to Processing

in Integration and Hardware • 10 months ago

Hi All. I want to create a project simular to this link: PROJECT

I want to use the same detection method but instead, i will control the servo and also the graphics in processing. But i am struggling to find a way to convert the code to processing.

Or Do i need not change the code but rather ask the arduino to send a message to processing?

/* Theremin Test
*
* Therremin with TTL Oscillator 4MHz
* Timer1 for freauency measurement
* Timer2 for gate time
* connect Oscillator on digital pin 5
* connect Speaker with 1K Resistor in series on pin 8
* KHM 2008 / Martin Nawrath
* Kunsthochschule fuer Medien Koeln
* Academy of Media Arts Cologne
*/
#include <Stdio.h>
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
//! Macro that clears all Timer/Counter1 interrupt flags.
#define CLEAR_ALL_TIMER1_INT_FLAGS (TIFR1 = TIFR1)
int pinLed = 13; // LED connected to digital pin 13
int pinFreq = 5;
void setup()
{
pinMode(pinLed, OUTPUT); // sets the digital pin as output
pinMode(pinFreq, INPUT);
pinMode(8, OUTPUT);
Serial.begin(57600); // connect to the serial port
// hardware counter setup ( refer atmega168.pdf chapter 16-bit counter1)
TCCR1A=0; // reset timer/counter1 control register A
TCCR1B=0; // reset timer/counter1 control register A
TCNT1=0; // counter value = 0
// set timer/counter1 hardware as counter , counts events on pin T1 ( arduino pin 5)
// normal mode, wgm10 .. wgm13 = 0
sbi (TCCR1B ,CS10); // External clock source on T1 pin. Clock on rising edge.
sbi (TCCR1B ,CS11);
sbi (TCCR1B ,CS12);
// timer2 setup / is used for frequency measurement gatetime generation
// timer 2 presaler set to 256 / timer 2 clock = 16Mhz / 256 = 62500 Hz
cbi (TCCR2B ,CS20);
sbi (TCCR2B ,CS21);
sbi (TCCR2B ,CS22);
//set timer2 to CTC Mode
cbi (TCCR2A ,WGM20);
sbi (TCCR2A ,WGM21);
cbi (TCCR2B ,WGM22);
OCR2A = 124; // CTC at top of OCR2A / timer2 interrupt when coun value reaches OCR2A value
// interrupt control
sbi (TIMSK2,OCIE2A); // enable Timer2 Interrupt
}
volatile byte i_tics;
volatile byte f_ready ;
volatile byte mlt ;
unsigned int ww;
int cal;
int cal_max;
char st1[32];
long freq_in;
long freq_zero;
long freq_cal;
unsigned int dds;
int tune;
int cnt=0;
void loop()
{
cnt++;
// add=analogRead(0);
f_meter_start();
tune=tune+1;
while (f_ready==0) { // wait for period length end (100ms) by interrupt
PORTB=((dds+=tune) >> 15); // kind of DDS tonegenerator / connect speaker to portb.0 = arduino pin8
}
tune = freq_in-freq_zero;
// use the tune value here for your own purposes like control of servos, midi etc.
// startup
if (cnt==10) {
freq_zero=freq_in;
freq_cal=freq_in;
cal_max=0;
Serial.print("** START **");
}
// autocalibration
if (cnt % 20 == 0) { // try autocalibrate after n cycles
Serial.print("*");
if (cal_max <= 2) {
freq_zero=freq_in;
Serial.print(" calibration");
}
freq_cal=freq_in;
cal_max=0;
Serial.println("");
}
cal = freq_in-freq_cal;
if ( cal < 0) cal*=-1; // absolute value
if (cal > cal_max) cal_max=cal;
digitalWrite(pinLed,1); // let LED blink
Serial.print(cnt);
Serial.print(" ");
if ( tune < 0) tune*=-1; // absolute value
sprintf(st1, " d",tune);
Serial.print(st1);
Serial.print(" ");
Serial.print(freq_in);
Serial.print(" ");
/*
Serial.print(freq_zero);
Serial.print(" ");
Serial.print(cal_max);
*/
Serial.println("");
digitalWrite(pinLed,0);
}
//******************************************************************
void f_meter_start() {
f_ready=0; // reset period measure flag
i_tics=0; // reset interrupt counter
sbi (GTCCR,PSRASY); // reset presacler counting
TCNT2=0; // timer2=0
TCNT1=0; // Counter1 = 0
cbi (TIMSK0,TOIE0); // dissable Timer0 again // millis and delay
sbi (TIMSK2,OCIE2A); // enable Timer2 Interrupt
TCCR1B = TCCR1B | 7; // Counter Clock source = pin T1 , start counting now
}
//******************************************************************
// Timer2 Interrupt Service is invoked by hardware Timer2 every 2ms = 500 Hz
// 16Mhz / 256 / 125 / 500 Hz
// here the gatetime generation for freq. measurement takes place:
ISR(TIMER2_COMPA_vect) {
if (i_tics==50) { // multiple 2ms = gate time = 100 ms
// end of gate time, measurement ready
TCCR1B = TCCR1B & ~7; // Gate Off / Counter T1 stopped
cbi (TIMSK2,OCIE2A); // disable Timer2 Interrupt
sbi (TIMSK0,TOIE0); // ensable Timer0 again // millis and delay
f_ready=1; // set global flag for end count period
// calculate now frequeny value
freq_in=0x10000 * mlt; // mukt #ovverflows by 65636
freq_in += TCNT1; // add counter1 value
mlt=0;
}
i_tics++; // count number of interrupt events
if (TIFR1 & 1) { // if Timer/Counter 1 overflow flag
mlt++; // count number of Counter1 overflows
sbi(TIFR1,TOV1); // clear Timer/Counter 1 overflow flag
}
}

Converting from Arduino to Processing

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