adjusted to allow for much better button latency

Author: philipellisis

Buttons.cpp

@@ -30,16 +30,17 @@ void Buttons::init() {
   //if (DEBUG) {Serial.print(F("DEBUG,buttons: initialized Gamepad1\r\n"));}
 }
 
-void Buttons::readInputs() {
+bool Buttons::readInputs() {
   unsigned char buttonPushed = 2; //this is set to notify light show that a button press has happened
+  bool buttonChangedState = false;
   // read shift register values
   if(buttonReader.update() || numberButtonsPressed > 0) {
     //if (DEBUG) {Serial.print(F("DEBUG"));}
     for(unsigned char i = 0; i < 24; i++) {
       bool currentButtonState = !buttonReader.state(i);
       //if (DEBUG) {Serial.print(currentButtonState);}
       if (currentButtonState != config.lastButtonState[i]) {
-        
+        buttonChangedState = true;
 
         if (currentButtonState == 1) {
           buttonPushed = 1;
@@ -63,6 +64,7 @@ void Buttons::readInputs() {
       config.lightShowState = INPUT_RECEIVED_SET_LIGHTS_LOW;
     }
   }
+  return buttonChangedState;
 }
 
 bool Buttons::sendButtonPush(unsigned char i, bool currentButtonState) {

Buttons.h

@@ -9,7 +9,7 @@ class Buttons {
 
   public:
     Buttons();
-    void readInputs();
+    bool readInputs();
     void init();
     void sendButtonState();
     bool sendButtonPush(unsigned char i, bool currentButtonState);

PinOne.ino

@@ -37,9 +37,8 @@ void setup() {
 
 
 void loop() {
-  //long int t1 = millis();
-  buttons.readInputs();
-  if (!USBDevice.isSuspended()) {
+  // unsigned long t1 = micros();
+  if (!buttons.readInputs() && !USBDevice.isSuspended()) {
     plunger.plungerRead();
     if (config.accelerometerEprom > 0) {
       accel.accelerometerRead();
@@ -50,10 +49,15 @@ void loop() {
       config.updateUSB = false;
     }
     comm.communicate();
+  } else {
+    Gamepad1.write();
+    //unsigned long t2 = micros();
+    // Serial.print(F("DEBUG,Time taken by the task: "));
+    // Serial.print(t2 - t1);
+    // Serial.println(F(" microseconds"));
+    // delay(100);
   }
-  // long int t2 = millis();
-  // Serial.print(F("DEBUG,Time taken by the task: ")); Serial.print((t2-t1)); Serial.print(F(" milliseconds\r\n"));
-  // delay(100);
+
   //Serial.println("arduino is running");
 
 }