01-05-2022, 08:27 AM
(This post was last modified: 04-27-2022, 06:54 AM by KinCony Support.)
Code 7: //The demo code is PCF8574-DO You can copy the code to your Arduino IDE.
Code:
#include "Arduino.h"
#include "PCF8574.h"
// Set i2c address
PCF8574 pcf8574_1(0x24,4,5);
PCF8574 pcf8574_2(0x25,4,5);
void setup()
{
Serial.begin(115200);
pcf8574_1.pinMode(P0, OUTPUT);
pcf8574_1.pinMode(P1, OUTPUT);
pcf8574_1.pinMode(P2, OUTPUT);
pcf8574_1.pinMode(P3, OUTPUT);
pcf8574_1.pinMode(P4, OUTPUT);
pcf8574_1.pinMode(P5, OUTPUT);
pcf8574_1.pinMode(P6, OUTPUT);
pcf8574_1.pinMode(P7, OUTPUT);
pcf8574_2.pinMode(P0, OUTPUT);
pcf8574_2.pinMode(P1, OUTPUT);
pcf8574_2.pinMode(P2, OUTPUT);
pcf8574_2.pinMode(P3, OUTPUT);
pcf8574_2.pinMode(P4, OUTPUT);
pcf8574_2.pinMode(P5, OUTPUT);
pcf8574_2.pinMode(P6, OUTPUT);
pcf8574_2.pinMode(P7, OUTPUT);
Serial.print("Init pcf8574_1...");
if (pcf8574_1.begin()){
Serial.println("PCF8574_1_OK");
}else{
Serial.println("PCF8574_1_KO");
}
Serial.print("Init pcf8574_2...");
if (pcf8574_2.begin()){
Serial.println("PCF8574_2_OK");
}else{
Serial.println("PCF8574_2_KO");
}
}
void loop()
{
pcf8574_1.digitalWrite(P7, LOW);
delay(1000);
pcf8574_1.digitalWrite(P7, HIGH);
delay(1000);
pcf8574_2.digitalWrite(P7, LOW);
delay(1000);
pcf8574_2.digitalWrite(P7, HIGH);
delay(1000);
}