I'm just wondering if this code would work. I'm trying to translate something I wrote in Python into C for Arduino and I'm not sure if I have the syntax/operations correct. In Python you can use the index of an item in one list (array) to reference an item of the same index in another.
I'm talking specifically about the ForNoteOn() and ForNoteOff() functions in the below code. I am using nested for loops as well as using the index of those iterated items in arrays (and a 2D array) to affect items of the same index/iteration in other arrays. I'm not sure if it works like this in C, but it compiles.
The code is like this (void setup() and void loop() left out, obviously):
#include <MIDI.h>
#define LED 13 // LED = Pin 13
int dataPins[] = {2, 3, 4, 5, 6, 7};
int selPins[] = {9, 10, 11, 12, 14, 15, 16, 17};
int selVals[] = {0, 0, 0, 0, 0, 0, 0, 0};
// set the MIDI note values per select line
int notes[8][6] = {
{48, 49, 50, 51, 52, 53},
{54, 55, 56, 57, 58, 59},
{60, 61, 62, 63, 64, 65},
{66, 67, 68, 69, 70, 71},
{72, 73, 74, 75, 76, 77},
{78, 79, 80, 81, 82, 83},
{84, 85, 86, 87, 88, 89},
{90, 91, 92, 93, 94, 95}
};
// -----------------------------------------------------------------------------------------------------
MIDI_CREATE_DEFAULT_INSTANCE(); // Create an instance of the library with default name,
// serial port and settings.
void readSelect(){ // Read Select lines
for (int i = 0; i < 8; i++) {
selVals[i] = digitalRead(selPins[i]);
}
}
// -----------------------------------------------------------------------------------------------------
// ForNoteON will be called by Midi Library when MIDI NOTE ON message is received.
// Bytes for Channel, Pitch, and Velocity.
void ForNoteOn(byte channel, byte pitch, byte velocity) {
digitalWrite(LED,HIGH); // LED off
readSelect(); // Read Select lines
for (int n = 0; n < 8; n++) { // For each select line (1-7) (*leave out 8 for now)
if (selVals[n] > 0) { // If that select line is HIGH
for (int m = 0; m < 6; m++) { // Then for each note in each array in notes (1-6)
if (notes[n][m] == pitch) { // if the mth note in the nth array is equal to the MIDI note
digitalWrite(dataPins[m], HIGH); // write to equivalent mth data line (1-6).
}
}
}
}
}
