sorry for all the questions lately!
i am getting real close to getting this controller to work properly.
the new issue is:
i am trying to send a midi note on then off (like a key on a keyboard) with a momentary switch.
i can not figure out a way to get it to only send one message out when i press the button.
when i press the button it sends out a ton of on messages, then when i release it sends an infinite amount of off messages.
i have searched and tried everything i could think of with no luck. i know it must be something simple i am missing.
here is the complete code: (the part with the midi note is boxed in with a row of $$$$$$$$$$ to make it easier to find.
/*
#define xLow 15
#define xHigh 17
#define yLow 16
#define yHigh 14
*/
//modified to match my sparkfun connector
#define xLow 15
#define xHigh 17
#define yLow 16
#define yHigh 14
#define midiChannel 1
const int buttonPin = 2; // the pin that the pushbutton is attached to
const int samplePin = 10;
int touchX, touchY;
int lastTouchX, lastTouchY;
int pin1 = 1;
int sampleState = 0;
//--------------------------------------------
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
//------------------------------------------------
void setup(){
// Setup serial / MIDI
Serial.begin(31250); // MIDI speed
// Serial.begin(9600); // Debug speed
//-------------------------------------
// initialize the button pin as a input:
pinMode(buttonPin, INPUT);
pinMode(samplePin, INPUT);
//------------------------------------
}
void loop(){
touchScan();
touchOut();
delay(0);
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$
[glow]sampleState = digitalRead(samplePin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (sampleState == HIGH) {
noteOn(0x90, 66, 0x40);
}
else {
// SEND A MIDI OFF NOTE
noteOn(0x80, 66, 0x40);
}[/glow]
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$
//---------------------------------------
// read the pushbutton input pin:
buttonState = digitalRead(buttonPin);
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (buttonState == HIGH) {
// if the current state is HIGH then the button
// wend from off to on:
buttonPushCounter++;
Serial.println("on");
Serial.print("number of button pushes: ");
Serial.println(buttonPushCounter, DEC);
}
else {
// if the current state is LOW then the button
// wend from on to off:
Serial.println("off");
}
// save the current state as the last state,
//for next time through the loop
lastButtonState = buttonState;
}
// sends a midi CC message of 0 or 127
// checking the modulo of the button push counter.
// the modulo function gives you the remainder of
// the division of two numbers:
if (buttonPushCounter % 2 == 0) {
sendCC(95, char(127)); // send CC message 95
}
else {
sendCC(95, char(0)); // send CC message 95
}
//++++++++++++++++++++++
if (analogRead(14) > 2)
{
sendCC(22, char(127)); // send CC message 22
}
if (analogRead(14) < 1)
{
sendCC(22, char(0)); // send CC message 22
}
//++++++++++++++++++++++
//++++++++++++++++++++++++++
}
void touchOut()
{
if(touchX > 0 && touchY > 0)
{
if(touchX > lastTouchX + 1 || touchX < lastTouchX - 1) //the 1 can be any whole number step
{
sendCC(20, char(touchX)); // send CC message 20
lastTouchX = touchX;
}
if(touchY > lastTouchY + 1 || touchY < lastTouchY - 1)
{
sendCC(21, char(touchY)); // send CC message 21
lastTouchY = touchY;
}
}
}
//------------------------------------------------
void noteOn(byte cmd, byte data1, byte data2) {
Serial.print(cmd, BYTE);
Serial.print(data1, BYTE);
Serial.print(data2, BYTE);
}
//---------------------------------------
// sends a CC message
void sendCC(char control, char data) {
int cmd;
cmd = 0xB0 | midiChannel; // merge channel number
Serial.print(cmd, BYTE);
Serial.print((control & 0x7F), BYTE);
Serial.print((data & 0x7F), BYTE); // use the 0x7F to restrict the data to a maximum of 127
}
void touchScan(){
pinMode(xLow,OUTPUT);
pinMode(xHigh,OUTPUT);
digitalWrite(xLow,LOW);
digitalWrite(xHigh,HIGH);
digitalWrite(yLow,LOW);
digitalWrite(yHigh,LOW);
pinMode(yLow,INPUT);
pinMode(yHigh,INPUT);
delay(0);
//xLow has analog port -14 !!
touchX=analogRead(yLow -14);
touchX = map(touchX , 0, 1023, -15, 159); //set size from 0 to 127
pinMode(yLow,OUTPUT);
pinMode(yHigh,OUTPUT);
digitalWrite(yLow,LOW);
digitalWrite(yHigh,HIGH);
digitalWrite(xLow,LOW);
digitalWrite(xHigh,LOW);
pinMode(xLow,INPUT);
pinMode(xHigh,INPUT);
delay(0);
//xLow has analog port -14 !!
touchY=analogRead(xLow - 14);
touchY = map(touchY , 0, 1023, -15, 162); //set size from 0 to 127
}
