[arduino code examples for T64M]-01 Turn ON/OFF OUTPUT

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Code:

/*
* Made by KinCony IoT: https://www.kincony.com
*
* This program controls 64 outputs using 4 PCF8575 I/O expanders.
* It sequentially turns on outputs 1 to 64, then turns them off from 64 to 1, in a loop.
*
* I2C Pin Definitions:
* - SDA: GPIO 48
* - SCL: GPIO 47
*
* PCF8575 Addresses:
* - Output  1~16 : 0x25
* - Output 17~32: 0x24
* - Output 33~48: 0x21
* - Output 49~64: 0x20
*
* Delay Time:
* - 200 milliseconds between switching outputs
*/

#include <Wire.h>        // Include the Wire library for I2C communication
#include <PCF8575.h>     // Include the PCF8575 library

#define SDA_PIN 48       // Define SDA pin
#define SCL_PIN 47       // Define SCL pin
#define DELAY_TIME 200   // Delay between operations in milliseconds

// Create PCF8575 objects for each chip
PCF8575 pcf_1(0x25); // output  1-16
PCF8575 pcf_2(0x24); // output 17-32
PCF8575 pcf_3(0x21); // output 33-48
PCF8575 pcf_4(0x20); // output 49-64

// Array of pointers to PCF8575 objects
PCF8575* pcfArray[4] = { &pcf_1, &pcf_2, &pcf_3, &pcf_4 };

void setup() {
  Wire.begin(SDA_PIN, SCL_PIN);  // Initialize I2C with specified pins
  Serial.begin(115200);
  Serial.println("PCF8575 64-Channel Output Control Starting...");

  // Initialize all PCF8575 modules and set all pins to HIGH (OFF)
  for (int i = 0; i < 4; i++) {
    pcfArray[i]->begin();
    for (int j = 0; j < 16; j++) {
      pcfArray[i]->write(j, HIGH);  // Turn off all outputs initially
    }
  }
}

void loop() {
  // Turn ON outputs from 1 to 64 (LOW)
  for (int channel = 0; channel < 64; channel++) {
    int chipIndex = channel / 16;         // Which PCF8575 (0 to 3)
    int pinIndex = channel % 16;          // Which pin on that PCF8575 (0 to 15)
    pcfArray[chipIndex]->write(pinIndex, LOW); // Turn ON the output
    delay(DELAY_TIME);
  }

  // Turn OFF outputs from 64 to 1 (HIGH)
  for (int channel = 63; channel >= 0; channel--) {
    int chipIndex = channel / 16;
    int pinIndex = channel % 16;
    pcfArray[chipIndex]->write(pinIndex, HIGH); // Turn OFF the output
    delay(DELAY_TIME);
  }
}

arduino ino file download:

  1-output.zip (Size: 1.03 KB / Downloads: 291)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

  1-output.ino.merged.zip (Size: 192.12 KB / Downloads: 273)