Teensy 2
N'est plus fabriqué par son concepteur, mais on trouve des clones sur Ebay ou Aliexpress. Parfait pour des interfaces USB midi.
Une version teensy2+ existe avec d'avantage d'E/S.
Nécessite une installation spéciale depuis le site de prjc
https://www.pjrc.com/store/teensy.html
Exemple de code pour reception midi :
//pour Teensy
#define channel_Led 16
#define controllerLed1 1
#define LED1 3 //Digital output with PWM
void setup() {
// put your setup code here, to run once:
pinMode(LED1, OUTPUT);
analogWrite(LED1,0);
usbMIDI.setHandleControlChange(OnControlChange);
}
void OnControlChange(byte channel, byte control, byte value) {
if (channel == channel_Led) {
if (control == controllerLed1) {
analogWrite(LED1,value*2);
}
}
else {}
}
void loop() {
// put your main code here, to run repeatedly:
}autre exemple :
//mise en oeuvre extension de port
//commande les LED par le canal 16
#include <Wire.h>
byte nombreDePotar = 2;
//parametrage
int channel = 1;
int firstNote = 30;
int velocity = 100;
int firstCC = 1;
int totalCtrl = 3; //nombre d'entrées utilisées pour les controleurs
unsigned long send_interval = 15;
//variables
byte digitalInputState[] = {0,0,0,0,0,0,0,0,0,0,0,0,0};
byte digitalInputState_prev[] = {0,0,0,0,0,0,0,0,0,0,0,0,0};
byte pinOrder[] = {0,1,2,3,4,5,6,7,8,9,10,23,24};
byte analogInputValue[] = {0,0,0,0,0,0,0,0,0,0,0,0};
byte analogInputValue_prev[] = {0,0,0,0,0,0,0,0,0,0,0,0};
unsigned long analogInputTime[] = {0,0,0,0,0,0,0,0,0,0,0,0};
//////////////////////
byte LEDOnOff[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
//////////////////////
void max6956_init (byte add)
{
Wire.beginTransmission (add); // transmit to outputs
Wire.write (0x02); // sends register address (global current)
Wire.write (0x0F); // sends set global current to max (20mA)
Wire.endTransmission (); // stop transmitting
Wire.beginTransmission (add); // transmit to outputs
Wire.write (0x04); // sends register address (config)
Wire.write (0x01); // sends set transition detect = 0 /global current set = 1 / normal op.
Wire.endTransmission (); // stop transmitting
Wire.beginTransmission (add); // transmit to outputs
Wire.write (0x09); // sends register address (port config)
Wire.write (0x00); // 4 - 7 dummy
Wire.write (0x00); // 8 -11 dummy
Wire.write (0x00); // sends set port 12-14 as LED driver
Wire.write (0x00); // sends set poet 16-17 as LED driver
Wire.write (0x00); // sends set port 18-19 as LED driver
Wire.write (0x00); // sends set port 24-27 as LED driver
Wire.write (0x00); // sends set port 28-31 as LED driver
Wire.endTransmission (); // stop transmitting
Wire.beginTransmission (add); // transmit
Wire.write (0x2C); // sends register address (port 12 on/off)
for( int p = 0; p<20; p++)
{
Wire.write ((int)0x00); // port 12-31 OFF
}
Wire.endTransmission (); // stop transmitting
}
void LED_to_MAX6956(byte add)
{
Wire.beginTransmission (add); // transmit to outputs
Wire.write (0x2C); // output P12
Wire.write ((int)LEDOnOff[0]); // P12 led 0
Wire.write ((int)LEDOnOff[1]); // P13 led 1
Wire.write ((int)LEDOnOff[2]); // P14 led 2
Wire.write ((int)LEDOnOff[3]); // P15 led 3
Wire.write ((int)LEDOnOff[4]); // P16 led 4
Wire.write ((int)LEDOnOff[5]); // P17 led 5
Wire.write ((int)LEDOnOff[6]); // P18 led 6
Wire.write ((int)LEDOnOff[7]); // P19 led 7
Wire.write ((int)LEDOnOff[8]); // P20 led 8
Wire.write ((int)LEDOnOff[9]); // P21 led 9
Wire.write ((int)LEDOnOff[10]); // P22 led 10
Wire.write ((int)LEDOnOff[11]); // P23 led 11
Wire.write ((int)LEDOnOff[12]); // P24 led 12
Wire.write ((int)LEDOnOff[13]); // P25 led 13
Wire.write ((int)LEDOnOff[14]); // P26 led 14
Wire.write ((int)LEDOnOff[15]); // P27 led 15
Wire.write ((int)LEDOnOff[16]); // P28 led 16
Wire.write ((int)LEDOnOff[17]); // P29 led 17
Wire.write ((int)LEDOnOff[18]); // P30 led 18
Wire.write ((int)LEDOnOff[19]); // P31 led 19
Wire.endTransmission () ; // stop transmitting
}
void setup() {
for(byte i = 0; i < 13; i++) {
pinMode(pinOrder[i], INPUT_PULLUP);
//digitalWrite(pinOrder[i], HIGH);
//*****MAX6956********************************************
Wire.begin (); // join i2c bus
delay(10);
max6956_init (0x44); // send the initilization handshake
//*********************************************************
}
}
void loop() {
//lire l'état des entrées
for(byte i = 0; i < 13; i++) {
digitalInputState[i] = digitalRead(pinOrder[i]);
}
for(int i = 0; i < 13; i++) {
if(digitalInputState[i] != digitalInputState_prev[i]) {
if(digitalInputState[i] == 0) {
//usbMIDI.sendNoteOn(firstNote + i, velocity, channel);
usbMIDI.sendControlChange(firstCC+ 20 + i, 127,channel);
digitalInputState_prev[i] = digitalInputState[i];
}
if(digitalInputState[i] == 1) {
//usbMIDI.sendNoteOff(firstNote + i, 0, channel);
usbMIDI.sendControlChange(firstCC+ 20 + i, 0,channel);
digitalInputState_prev[i] = digitalInputState[i];
}
}
}
for(byte i = 0; i < totalCtrl; i++) {
analogInputValue[i] = map(analogRead(i), 0,1023,0,127);
analogInputValue[i] = constrain(analogInputValue[i], 0 ,127);
}
for(byte i = 0; i < nombreDePotar; i++) {
if(millis() - analogInputTime[i] > send_interval && analogInputValue[i] != analogInputValue_prev[i]) {
analogInputTime[i] = millis();
analogInputValue_prev[i] = analogInputValue[i];
usbMIDI.sendControlChange(firstCC + i, analogInputValue[i],channel);
}
}
//reception du midi depuis l'ordinateur sur canal 16
if(usbMIDI.read(16) > 0) { //
if(usbMIDI.getType() == 3) { // 3 = CC
byte data1 = usbMIDI.getData1();
byte data2 = usbMIDI.getData2();
if(data1 > 19) { // à réception d'une valeur de CC# au dela des 20 leds, toutes les LED à zéro !
for (byte i = 0; i<19; i++) {
LEDOnOff[i] = 0; //all LED off
}
}
else {
LEDOnOff[data1] = bitRead(data2,6);
}
}
}
LED_to_MAX6956(0x44);
}//end loopnom du port USB :
// To give your project a unique name, this code must be
// placed into a .c file (its own tab). It can not be in
// a .cpp file or your main sketch (the .ino file).
#include "usb_names.h"
// Edit these lines to create your own name. The length must
// match the number of characters in your custom name.
#define MANUFACTURER_NAME {'O','L','I','_','L','A','B'}
#define MANUFACTURER_NAME_LEN 7
#define MIDI_NAME {'M','E','L','E','C','1'}
#define MIDI_NAME_LEN 6
#define SERIAL_NUM {'1'}
#define SERIAL_NUM_LEN 1
#define MIDI_PORT1_NAME {'V','i','d','e','o','_','c','o','n','t','r','o','l'}
#define MIDI_PORT1_NAME_LEN 13
// Do not change this part. This exact format is required by USB.
struct usb_string_descriptor_struct usb_string_manufacturer_name = {
2 + MANUFACTURER_NAME_LEN * 2,
3,
MANUFACTURER_NAME
};
struct usb_string_descriptor_struct usb_string_product_name = {
2 + MIDI_NAME_LEN * 2,
3,
MIDI_NAME
};
struct usb_string_descriptor_struct usb_string_serial_number = {
2 + SERIAL_NUM_LEN * 2,
3,
SERIAL_NUM
};
struct usb_string_descriptor_struct usb_string_midi_port1 = {
2 + MIDI_PORT1_NAME_LEN * 2,
3,
MIDI_PORT1_NAME
};et placer ce fichier nommé usb_names.h dans C:\Users[username]\AppData\Local\Arduino15\packages\teensy\hardware\avr\1.59.0\cores\teensy