[arduino code examples for B24M]-02 Read digital input ports state

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Code:

/*
* Made by KinCony IoT: https://www.kincony.com
*
* Description:
* This Arduino program reads the state of two 16-channel PCF8575 I/O expanders
* and prints the state of all input pins (1-24) to the Serial Monitor.
*
* Pin Definitions:
* - SDA: GPIO 8
* - SCL: GPIO 18
* - PCF8575 I2C Address: 0x22 for inputs 1-16, 0x25 for inputs 17-24
*/

#include "Arduino.h"
#include "PCF8575.h"

// Define I2C pins
#define I2C_SDA 8  // Define SDA pin
#define I2C_SCL 18  // Define SCL pin

// Set I2C addresses
PCF8575 pcf8575_IN1(0x22); // The I2C address of the first PCF8575 (inputs 1-16)
PCF8575 pcf8575_IN2(0x25); // The I2C address of the second PCF8575 (inputs 17-24)

void setup() {
    Serial.begin(115200);

    // Initialize I2C communication
    Wire.begin(I2C_SDA, I2C_SCL); // Initialize I2C with defined SDA and SCL pins

    // Initialize both PCF8575 modules
    pcf8575_IN1.begin();
    pcf8575_IN2.begin();

    Serial.println("KinCony B24 24 channel input state 0:ON  1:OFF");
}

void loop() {

if (pcf8575_IN1.read(8)==0) {Serial.print("DI1 state="); Serial.println("on");}
if (pcf8575_IN1.read(9)==0) {Serial.print("DI2 state="); Serial.println("on");}
if (pcf8575_IN1.read(10)==0) {Serial.print("DI3 state="); Serial.println("on");}
if (pcf8575_IN1.read(11)==0) {Serial.print("DI4 state="); Serial.println("on");}
if (pcf8575_IN1.read(12)==0) {Serial.print("DI5 state="); Serial.println("on");}
if (pcf8575_IN1.read(13)==0) {Serial.print("DI6 state="); Serial.println("on");}
if (pcf8575_IN1.read(14)==0) {Serial.print("DI7 state="); Serial.println("on");}
if (pcf8575_IN1.read(15)==0) {Serial.print("DI8 state="); Serial.println("on");}

if (pcf8575_IN1.read(0)==0) {Serial.print("DI9 state="); Serial.println("on");}
if (pcf8575_IN1.read(1)==0) {Serial.print("DI10 state="); Serial.println("on");}
if (pcf8575_IN1.read(2)==0) {Serial.print("DI11 state="); Serial.println("on");}
if (pcf8575_IN1.read(3)==0) {Serial.print("DI12 state="); Serial.println("on");}
if (pcf8575_IN1.read(4)==0) {Serial.print("DI13 state="); Serial.println("on");}
if (pcf8575_IN1.read(5)==0) {Serial.print("DI14 state="); Serial.println("on");}
if (pcf8575_IN1.read(6)==0) {Serial.print("DI15 state="); Serial.println("on");}
if (pcf8575_IN1.read(7)==0) {Serial.print("DI16 state="); Serial.println("on");}

if (pcf8575_IN2.read(0)==0) {Serial.print("DI17 state="); Serial.println("on");}
if (pcf8575_IN2.read(1)==0) {Serial.print("DI18 state="); Serial.println("on");}
if (pcf8575_IN2.read(2)==0) {Serial.print("DI19 state="); Serial.println("on");}
if (pcf8575_IN2.read(3)==0) {Serial.print("DI20 state="); Serial.println("on");}
if (pcf8575_IN2.read(4)==0) {Serial.print("DI21 state="); Serial.println("on");}
if (pcf8575_IN2.read(5)==0) {Serial.print("DI22 state="); Serial.println("on");}
if (pcf8575_IN2.read(6)==0) {Serial.print("DI23 state="); Serial.println("on");}
if (pcf8575_IN2.read(7)==0) {Serial.print("DI24 state="); Serial.println("on");}


    delay(1000); // Delay 500ms
}

arduino ino file download:

  2-digital-input.zip (Size: 880 bytes / Downloads: 223)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download: 

  2-digital-input.ino.merged.zip (Size: 192.64 KB / Downloads: 227)