A MIDI piano synthesizer that implements the Karplus Strong physical modeling algorithm.
Dependencies: mbed USBDevice PinDetect
LEDController.cpp
- Committer:
- ndelfino
- Date:
- 2016-04-25
- Revision:
- 21:8b5d753b6bf5
- Parent:
- 20:bf675ba2c454
- Child:
- 22:b800e1766647
File content as of revision 21:8b5d753b6bf5:
#include "mbed.h" #include "LEDController.h" //Pins that output values to the brick LED DigitalOut brickled1(p5); DigitalOut brickled2(p6); DigitalOut brickled3(p7); DigitalOut brickled4(p8); //Pins that output values to the tri-color LEDS for cLED1 DigitalOut myled1_1(p9); DigitalOut myled1_2(p10); DigitalOut myled1_3(p11); //Pins that output values to the tri-color LEDS for LED2 DigitalOut myled2_1(p12); DigitalOut myled2_2(p13); DigitalOut myled2_3(p14); //Pins that output values to the tri-color LEDS for LED3 DigitalOut myled3_1(p15); DigitalOut myled3_2(p16); DigitalOut myled3_3(p17); //Pins that output values to the tri-color LEDS for LED4 DigitalOut myled4_1(p18); DigitalOut myled4_2(p19); DigitalOut myled4_3(p20); void identifyKeyForLed(int key, int type); void chooseLedForKey(int colors[3], int type, int signature, int key); void setLedToKey(int colors[3], int type, int signature, int led, int key); //These are the color assignments for the keys. In order, C, C#, D, D#, E,F, F#, G, G#, A, A#, B int colors[12][3] = {{1,0,1},{1,0,1},{1,0,0},{1,0,0},{0,1,0},{0,0,1},{0,0,1},{1,1,0},{1,1,0},{0,1,1},{0,1,1},{1,1,1}}; //This holds the current key of the LED. If no key is in the LED then the value for that slot is -1. int ledKeys[4] = {-1,-1,-1,-1}; const int SHARP = 1; const int NOT_SHARP = 0; const int cLED1 = 1; const int cLED2 = 2; const int cLED3 = 3; const int cLED4 = 4; const int cSharp = 1; const int dSharp = 3; const int fSharp = 6; const int gSharp = 8; const int aSharp = 10; //Identifies the key. void LEDController::identifyKeyForLed(int key, int type){ //Performs modulus to determine key. This also determines color and signature. int determineColorSignature = key%12; //If modulus operation is any of these values then it means the key is sharp. if(determineColorSignature == cSharp || determineColorSignature == dSharp || determineColorSignature == fSharp || determineColorSignature == gSharp || determineColorSignature == aSharp){ chooseLedForKey(colors[determineColorSignature], type, SHARP, key); }else{ chooseLedForKey(colors[determineColorSignature], type, NOT_SHARP, key); } } //Chooses which LED needs to perform an action. Either turning on a light to the specific note //color or turning off the LED when the key is no longer active. void LEDController::chooseLedForKey(int colors[3], int type, int signature, int key){ //Determines if the LED is not set and therefore can be used. //Or if it is in use by the same key being passed in this means the led needs to be turned off. if(ledKeys[0] == -1 || ledKeys[0] == key){ setLedToKey(colors, type, signature, cLED1, key); }else if(ledKeys[1] == -1 || ledKeys[1] == key){ setLedToKey(colors, type, signature, cLED2, key); }else if(ledKeys[2] == -1 || ledKeys[2] == key){ setLedToKey(colors, type, signature, cLED3, key); }else if(ledKeys[3] == -1 || ledKeys[3] == key){ setLedToKey(colors, type, signature, cLED4, key); } } //This sets the LED to the key or clears the previously set LED of that specific key if the type is off. void LEDController::setLedToKey(int colors[3], int type, int signature, int led, int key){ if(led == cLED1){ if(type == 1){ ledKeys[0] = key; myled1_1 = colors[0]; myled1_2 = colors[1]; myled1_3 = colors[2]; if(signature == SHARP){ brickled1 = 1; } }else{ ledKeys[0] = -1; myled1_1 = 0; myled1_2 = 0; myled1_3 = 0; brickled1 = 0; } }else if(led == cLED2){ if(type == 1){ ledKeys[1] = key; myled2_1 = colors[0]; myled2_2 = colors[1]; myled2_3 = colors[2]; if(signature == SHARP){ brickled2 = 1; } }else{ ledKeys[1] = -1; myled2_1 = 0; myled2_2 = 0; myled2_3 = 0; brickled2 = 0; } }else if(led == cLED3){ if(type == 1){ ledKeys[2] = key; myled3_1 = colors[0]; myled3_2 = colors[1]; myled3_3 = colors[2]; if(signature == SHARP){ brickled3 = 1; } }else{ ledKeys[2] = -1; myled3_1 = 0; myled3_2 = 0; myled3_3 = 0; brickled3 = 0; } }else if(led == cLED4){ if(type == 1){ ledKeys[3] = key; myled4_1 = colors[0];; myled4_2 = colors[1]; myled4_3 = colors[2]; if(signature == SHARP){ brickled4 = 1; } }else{ ledKeys[3] = -1; myled4_1 = 0; myled4_2 = 0; myled4_3 = 0; brickled4 = 0; } } }