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Minor fix and examples

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This commit is contained in:
Renzo Mischianti 2022-12-14 09:21:02 +01:00
parent de00a4e005
commit c49ffd7aeb
1 changed files with 37 additions and 0 deletions
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37
examples/ArduinoSAMDSercom3keyPressedPin1/ArduinoSAMDSercom3keyPressedPin1.ino Normal file
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/*
KeyPressed on PIN1
by Mischianti Renzo <http://www.mischianti.org>
https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
*/
#include "Arduino.h"
#include "PCF8574.h"
TwoWire aWire(&sercom3, 20, 21);
// Set i2c address
PCF8574 pcf8574(&aWire, 0x38);
unsigned long timeElapsed;
void setup()
{
Serial.begin(115200);
delay(1000);
pcf8574.pinMode(P0, OUTPUT);
pcf8574.pinMode(P1, INPUT);
Serial.print("Init pcf8574...");
if (pcf8574.begin()){
Serial.println("OK");
}else{
Serial.println("KO");
}
}
void loop()
{
uint8_t val = pcf8574.digitalRead(P1);
if (val==HIGH) Serial.println("KEY PRESSED");
delay(50);
}