Initial commit

T-Display-S3-main/lib/PCF8575 library/examples/keyPressedPin1_storedOnBuffer_async/keyPressedPin1_storedOnBuffer_async.ino

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+/*
+ KeyPressed async
+ 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"
+
+// Set i2c address
+PCF8575 pcf8575(0x20);
+unsigned long timeElapsed;
+void setup()
+{
+	Serial.begin(115200);
+
+	pcf8575.pinMode(P1, INPUT);
+	pcf8575.begin();
+
+
+	timeElapsed = millis();
+}
+
+void loop()
+{
+	// Read and store on buffer all input (pinMode) that are going HIGHT
+	pcf8575.readBuffer();
+	if (millis()>timeElapsed+2000){
+		// read value on buffer than reset value for that pin
+		uint8_t val = pcf8575.digitalRead(P1);
+		if (val==HIGH) Serial.println("KEY PRESSED STORED ON BUFFER, NOW READED AND RESETTED.");
+		timeElapsed = millis();
+	}
+}