New to Arduino, need help!

Hello,
I am very new to programming and am having trouble compiling this code for a project , I know I’m missing something but I’m sure what. Any help would be greatly appreciated. Here is the code for the proj cat that is not working.

#include <Wire.h>
#include <Adafruit_Trellis.h>

#define LED 13 // Pin for heartbeat LED (shows code is working)
#define CHANNEL 1 // MIDI channel number

Adafruit_Trellis trellis;

uint8_t heart = 0; // Heartbeat LED counter
unsigned long prevReadTime = 0L; // Keypad polling timer
uint8_t mod;
uint8_t vel;
uint8_t fxc;
uint8_t rate;

uint8_t note = {
60, 61, 62, 63,
56, 57, 58, 59,
52, 53, 54, 55,
48, 49, 50, 51
};

void setup() {
pinMode(LED, OUTPUT);
trellis.begin(0x70); // Pass I2C address
#ifdef AVR
// Default Arduino I2C speed is 100 KHz, but the HT16K33 supports
// 400 KHz. We can force this for faster read & refresh, but may
// break compatibility with other I2C devices…so be prepared to
// comment this out, or save & restore value as needed.
TWBR = 12;
#endif
trellis.clear();
trellis.writeDisplay();
mod = map(analogRead(0), 0, 1023, 0, 127);
vel = map(analogRead(1), 0, 1023, 0, 127);
fxc = map(analogRead(2), 0, 1023, 0, 127);
rate = map(analogRead(3),0, 1023, 0, 127);
usbMIDI.sendControlChange(1, mod, CHANNEL);
usbMIDI.sendControlChange(11, vel, CHANNEL);
usbMIDI.sendControlChange(12, fxc, CHANNEL);
usbMIDI.sendControlChange(13, rate, CHANNEL);
}

void loop() {
unsigned long t = millis();
if((t - prevReadTime) >= 20L) { // 20ms = min Trellis poll time
if(trellis.readSwitches()) { // Button state change?

for(uint8_t i=0; i<16; i++) { // For each button…
if(trellis.justPressed(i)) {
usbMIDI.sendNoteOn(note*, 127, CHANNEL);*

  • trellis.setLED(i);*
  • } else if(trellis.justReleased(i)) {*
    _ usbMIDI.sendNoteOff(note*, 0, CHANNEL);_
    _
    trellis.clrLED(i);_
    _
    }_
    _
    }_
    _
    trellis.writeDisplay();_
    _
    }_
    uint8_t newModulation = map(analogRead(0), 0, 1023, 0, 127);
    _
    if(mod != newModulation) {_
    _
    mod = newModulation;_
    _
    usbMIDI.sendControlChange(1, mod, CHANNEL);_
    _
    }_
    uint8_t newVelocity = map(analogRead(1), 0, 1023, 0, 127);
    _
    if(vel != newVelocity) {_
    _
    vel = newVelocity;_
    _
    usbMIDI.sendControlChange(11, vel, CHANNEL);_
    _
    }_
    uint8_t newEffect = map(analogRead(2), 0, 1023, 0, 127);
    _
    if(fxc != newEffect) {_
    _
    fxc = newEffect;_
    _
    usbMIDI.sendControlChange(12, fxc, CHANNEL);_
    _
    }_
    uint8_t newRate = map(analogRead(3), 0, 1023, 0, 127);
    _
    if(rate !=newRate) {_
    _
    rate = newRate;_
    _
    usbMIDI.sendControlChange(13, rate, CHANNEL);_
    _
    }_
    _
    prevReadTime = t;_
    _
    digitalWrite(LED, ++heart & 32); // Blink = alive*_
    * }*
    * while(usbMIDI.read()); // Discard incoming MIDI messages*
    }
    - I am not sure if I’m missing a loop or main command for the code.:frowning:

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I am not sure if I'm missing a loop or main command for the code

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