controlPanel.cpp

#include "controlPanel.h"

controlPanel::controlPanel() {
	// cout << "setting up control panel" << endl;
	
	// Set up serial
	serial.enumerateDevices();
	serial.setup("/dev/tty.usbserial-A900aeQz", 115200);
	bytesReceived = 0;
	ageOfDeath = 0;
	masterVolume = 1;
	encoderPosition = 0;
	
}

void controlPanel::update() {
	updateSerial();
	
	
	aPressed = (!aWasDown && aDown) ? true : false;
	aReleased = (aWasDown && !aDown) ? true : false;
	
	bPressed = (!bWasDown && bDown) ? true : false;
	bReleased = (bWasDown && !bDown) ? true : false;
	
	cPressed = (!cWasDown && cDown) ? true : false;
	cReleased = (cWasDown && !cDown) ? true : false;	
	
	dPressed = (!dWasDown && dDown) ? true : false;
	dReleased = (dWasDown && !dDown) ? true : false;		
	
	aWasDown = aDown;
	bWasDown = bDown;
	cWasDown = cDown;
	dWasDown = dDown;	
	
	
	// Processing
	ageOfDeath = ofMap(pot2, 0, 255, 1, 2000);
	if(pot2 == 255) ageOfDeath = 0; // special case for eternal life

	
	mappedMicSlider = ofMap(micSlider, 0, 255, 0, 50, true);
	mappedVhsSlider = ofMap(vhsSlider, 0, 255, 0, 10, true);
	mappedMixSlider = ofMap(mixSlider, 0, 255, 0, 10, true);	
	masterVolume = ofMap(pot1, 0, 255, 0, 1, true);
}

void controlPanel::start() {
	requestPacket();
}


void controlPanel::requestPacket() {
	serial.writeByte(micLevel);
	serial.writeByte(vhsLevel);
	serial.writeByte(mixLevel);
}

void controlPanel::updateSerial() {
	if (bytesReceived < PACKET_SIZE) {
		
		// check for data
		if (serial.available() > 0) {			
			
			//cout << serial.available() << " bytes available" << endl;			
			// try to read - note offset into the bytes[] array, this is so
			// that we don't overwrite the bytes we already have
			int packetOffset = bytesReceived;
			
			int result = serial.readBytes( &packet[packetOffset],	PACKET_SIZE - bytesReceived);
			
			// check for error code
			if (result == OF_SERIAL_ERROR) {
				// something bad happened
				ofLog( OF_LOG_ERROR, "unrecoverable error reading from serial" );
			}
			else if ( result == OF_SERIAL_NO_DATA ) {
				// nothing was read, try again
			}
			else {
				// we read some data!
				bytesReceived += result;
			}
		}
		
	}
	else {
		//cout << "got packet!" << endl;
		parsePacket();
		
		bytesReceived = 0;
		
		// get another one
		requestPacket();
	}
}

void controlPanel::parsePacket() {
	micSlider = (int)packet[0];
	vhsSlider = (int)packet[1];
	mixSlider = (int)packet[2];	
	pot1 = (int)packet[3];
	pot2 = (int)packet[4];
	encoderPosition = (int)packet[5];
	
	
	
	// unpack the buttons	
	buttons = packet[6];
	
	aDown = (getBit(buttons, 7) == 1) ? true : false;
	bDown = (getBit(buttons, 6) == 1) ? true : false;
	cDown = (getBit(buttons, 5) == 1) ? true : false;
	dDown = (getBit(buttons, 4) == 1) ? true : false;	
	toggle1 = (getBit(buttons, 3) == 1) ? true : false;
	toggle2 = (getBit(buttons, 2) == 1) ? true : false;
	
}


int controlPanel::getBit(unsigned char data, int i) {
	return (data >> i) & 0x01;
}