More pots and switches to midi data

This post is a follow on post to the previous one.

This is an update to the analog and digital inputs to MIDI data sketch. The update allows one to select individual channels for each controller as well as individual on and off controller values for each digital switch. This sketch has not been tested.

The new variable arrays are:
byte ana_channel[] = {1, 1, 1, 1, 1, 1, 1, 1}
This array sets the channel numbers for the pots 1 - 8.

byte dig_channel[] = {1, 1, 1, 1, 1, 1, 1, 1}
This array sets the channel numbers for the switches 1 - 8

byte cc_on_byte[] = {127, 127, 127, 127, 127, 127, 127, 127}
This array sets data to send if button is pressed for switches 1 - 8

byte cc_off_byte[] = {0, 0, 0, 0, 0, 0, 0, 0}
This array sets data to send if button is depressed for switches 1 - 8

Arduino Code

/*
Digital and Analog Data to MIDI Output
by Sebastian Tomczak
Adelaide, Australia

Created: 8 November 2007
Modified: 9 November 2007
*/


// MIDI CHANNEL NUMBERS, CONTROLLER NUMBERS AND CONTROLLER VALUES VARIABLE ARRAYS

byte ana_cc[] = {
 0, 1, 2, 3, 4, 5, 6, 7}
; // set controller numbers for the pots 1 - 8

byte dig_cc[] = {
 8, 9, 10, 11, 12, 13, 14, 15}
; // set controller numbers for the switches 1 - 8

byte ana_channel[] = {
 1, 1, 1, 1, 1, 1, 1, 1}
; // set the channel numbers for the pots 1 - 8

byte dig_channel[] = {
 1, 1, 1, 1, 1, 1, 1, 1}
; // set the channel numbers for the switches 1 - 8

byte cc_on_byte[] = {
 127, 127, 127, 127, 127, 127, 127, 127}
; // set data to send if button is pressed for switches 1 - 8

byte cc_off_byte[] = {
 0, 0, 0, 0, 0, 0, 0, 0}
; // set data to send if button is depressed for switches 1 - 8


// 4021 DIGITAL I/O PINS

byte latchPin = 10;
// set the latch pin

byte clockPin = 11;
// set the clock pin

byte  dataPin = 12;
// set the data in pin


// INTERNAL VARIABLES

byte data_ana_cc[] = {
 255, 255, 255, 255, 255, 255, 255, 255}
; // keep track of analog data

byte data_dig_cc[] = {
 0, 0, 0, 0, 0, 0, 0, 0}
; // keep track of digital data

byte data = 0;
// variable for general use

byte digital_data = 0;
// variable to store the state of the 8 switches

byte state = 0;
// variable to store the data that is shifted in


// BEGIN SETUP

void setup() {
 Serial.begin(31250);
 pinMode(2,OUTPUT);
 pinMode(3,OUTPUT);
 pinMode(4,OUTPUT);

 pinMode(latchPin,OUTPUT);
 pinMode(clockPin,OUTPUT);
 pinMode(dataPin,INPUT);

 digitalWrite(latchPin,HIGH);
 digitalWrite(clockPin,HIGH);
}


// BEGIN MAIN PROGRAM

void loop() {
 delayMicroseconds(20);
 digitalWrite(latchPin, 0);
 for (byte j = 7; j >= 0; j--)
 {
   digitalWrite(clockPin, 0);
   delayMicroseconds(20);
   state = digitalRead(dataPin);
   if (state) {
     if(data_dig_cc[j] != 1) {
       Serial.print(175 + dig_channel[j]);
       Serial.print(dig_cc[j]);
       Serial.print(cc_on_byte[j]);
       data_dig_cc[j] = 1;
     }
   }
   else {
     if(data_dig_cc[j] != 0) {
       Serial.print(175 + dig_channel[j]);
       Serial.print(dig_cc[j]);
       Serial.print(cc_off_byte[j]);
       data_dig_cc[j] = 0;
     }
   }
   digitalWrite(clockPin, 1);
 }
 digitalWrite(latchPin, 1);
 for(byte i = 0; i <= 7; i++) {     PORTD = i * 4;     data = analogRead(0) >> 3;
   if(data_ana_cc[i] != data) {
     Serial.print(175 + ana_channel[i]);
     Serial.print(ana_cc[i]);
     Serial.print(data);
     data_ana_cc[i] = data;
   }
 }
}