#define PPM_TEST 3 //test voie valeur

#define PPM_MIN_COMMAND 1250
#define PPM_SWITCH		1550
#define PPM_MAX_COMMAND 1750
#define isterie 10


#define PPM_Pin 3 //this must be 2 or 3
int ppm[18]; //array for storing up to 16 servo signals
int maxi = 0, mini = 3000, decal, moy, a,r, val;

void setup() {
	Serial.begin(115200);		Serial.println("ready");
	pinMode(PPM_Pin, INPUT);	attachInterrupt(PPM_Pin - 2, read_ppm, CHANGE);

	TCCR1A = 0; //reset timer1
	TCCR1B = 0;
	TCCR1B |= (1 << CS11); //set timer1 to increment every 0,5 us
}

void loop() {
	//You can delete everithing inside loop() and put your own code here
	int count;
	if(ppm[PPM_TEST]<mini || ppm[PPM_TEST]>maxi) {
		maxi = max( maxi, ppm[PPM_TEST]);
		mini = min( mini, ppm[PPM_TEST]);
		moy = (maxi + mini)/2;
		decal = (maxi - moy) / 125 * 100;
		a = moy + decal;
		r = moy - decal;
	}
	Serial.print(a);		Serial.print(" ");
	Serial.print(r);		Serial.print(" ");
	Serial.print(maxi);		Serial.print(" ");
	Serial.print(mini);		Serial.print(" ");
	Serial.print(moy);		Serial.print(" ");
	if((PPM_SWITCH - isterie) < moy < (PPM_SWITCH + isterie)) {
		Serial.print("	.	Pb istérie PPM middel	");
		Serial.print(PPM_SWITCH);
	}
	else {
		Serial.print("	.	");
		
		count = 0;
		Serial.print(ppm[count]);	Serial.print("	"); count++;
		Serial.print(ppm[count]);	Serial.print("	"); count++;
		Serial.print(ppm[count]);	Serial.print("	"); count++;
		Serial.print(ppm[count]);	Serial.print("	"); count++;
		for( ;count<17;count++) {
			val=ppm[count];
				 if((moy-2*isterie) < val < (moy+2*isterie)) {	Serial.print("2"); }
			else if(PPM_MAX_COMMAND < val < 2200) {	Serial.print("3"); }
			else if(PPM_MAX_COMMAND < val) {	Serial.print("+"); }
			else if(800 < val < PPM_MIN_COMMAND) {	Serial.print("1"); }
			else {	Serial.print("."); }
			
		}
/*
		while(ppm[count] != 0){ //print out the servo values
			Serial.print(count);		Serial.print(" ");
			Serial.print(ppm[count]);	Serial.print("	");
			count++;
		}
*/
	}
	Serial.println("");
	delay(100); //you can even use delays!!!
}

void read_ppm(){ //leave this alone
    #if F_CPU == 16000000
        #define PPM_SCALE 1L
    #elif F_CPU == 8000000
        #define PPM_SCALE 0L
    #else
        #error // 8 or 16MHz only !
    #endif
	static unsigned int pulse;
	static unsigned long counter;
	static byte channel;

	counter = TCNT1;
	TCNT1 = 0;

	if(counter < 510 << PPM_SCALE){			pulse = counter;	}	//must be a pulse if less than 510us
	else if(counter > 1910 << PPM_SCALE){	channel = 0;		}	//sync pulses over 1910us
	else{	ppm[channel] = (counter + pulse) >> PPM_SCALE;	channel++;	}	//servo values between 510us and 2420us will end up here
}