Initial commit

T-Display-S3-main/lib/PCF8575 library/examples/readAll_Interrupt/readAll_Interrupt.ino

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+/*
+ Read all data after interrupt
+ by Mischianti Renzo <http://www.mischianti.org>
+
+ https://www.mischianti.org/2019/01/02/pcf8575-i2c-digital-i-o-expander-fast-easy-usage/
+*/
+
+#include "Arduino.h"
+#include "PCF8575.h"
+
+// For arduino uno only pin 1 and 2 are interrupted
+#define ARDUINO_UNO_INTERRUPTED_PIN 2
+
+// Function interrupt
+void keyChangedOnPCF8575();
+
+// Set i2c address
+PCF8575 pcf8575(0x39, ARDUINO_UNO_INTERRUPTED_PIN, keyChangedOnPCF8575);
+unsigned long timeElapsed;
+void setup()
+{
+	Serial.begin(115200);
+
+	pcf8575.pinMode(P0, INPUT);
+	pcf8575.pinMode(P1, INPUT);
+	pcf8575.pinMode(P2, INPUT);
+	pcf8575.pinMode(P3, INPUT);
+	pcf8575.begin();
+
+	Serial.println("START");
+
+	timeElapsed = millis();
+}
+
+bool keyChanged = false;
+void loop()
+{
+	if (keyChanged){
+		PCF8575::DigitalInput di = pcf8575.digitalReadAll();
+		Serial.print("READ VALUE FROM PCF P1: ");
+		Serial.print(di.p0);
+		Serial.print(" - ");
+		Serial.print(di.p1);
+		Serial.print(" - ");
+		Serial.print(di.p2);
+		Serial.print(" - ");
+		Serial.println(di.p3);
+//		delay(5);
+		keyChanged= false;
+	}
+}
+
+void keyChangedOnPCF8575(){
+	// Interrupt called (No Serial no read no wire in this function, and DEBUG disabled on PCF library)
+	 keyChanged = true;
+}