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[arduino code examples for B24M]-11 digital INPUT trigger OUTPUT directly

Posted by: admin - 07-31-2025, 07:08 AM - Forum: B24M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This program reads 24 input states from two PCF8575 I/O expanders and 

 * controls a corresponding 24-channel relay module. 

 * When an input pin is LOW, the corresponding relay is turned ON (LOW means ON for the relay).

 * When the input pin is HIGH, the corresponding relay is turned OFF.

 *

 * Pin Definitions:

 * - SDA: GPIO 8

 * - SCL: GPIO 18

 * - Input I2C Address 1 (inputs 1-16): 0x24

 * - Input/Relay I2C Address 2 (inputs 17-24 and relays 1-8): 0x26

 * - Relay I2C Address 3 (relays 9-24): 0x25

 */

#include <Wire.h>        // I2C communication

#include <PCF8575.h>     // Library to control the PCF8575 I/O expander

// Define I2C pins

#define SDA 8            // SDA pin

#define SCL 18           // SCL pin

// I2C addresses for the PCF8575 modules

#define INPUT_I2C_ADDRESS_1 0x22   // I2C address for the first input PCF8575 module (inputs 1-16)

#define INPUT_RELAY_I2C_ADDRESS_2 0x25   // I2C address for inputs 17-24 and relays 1-8

#define RELAY_I2C_ADDRESS_3 0x24   // I2C address for relays 9-24

PCF8575 pcf8575_IN1(INPUT_I2C_ADDRESS_1);    // Create an object for the first input PCF8575 (inputs 1-16)

PCF8575 pcf8575_IN2(INPUT_RELAY_I2C_ADDRESS_2);    // Create an object for the second input PCF8575 (inputs 17-24 and relays 1-8)

PCF8575 pcf8575_RL(RELAY_I2C_ADDRESS_3);    // Create an object for the relay PCF8575 (relays 9-24)

void setup() {

  // Initialize I2C communication

  Wire.begin(SDA, SCL);

  // Initialize serial communication

  Serial.begin(115200);

  // Initialize input and relay modules

  pcf8575_IN1.begin();  // For inputs 1-16

  pcf8575_IN2.begin();  // For inputs 17-24 and relays 1-8

  pcf8575_RL.begin();   // For relays 9-24

  // Turn off all relays at the start (LOW means OFF)

  for (int i = 8; i < 16; i++) {

    pcf8575_IN2.write(i, HIGH);  // Turn off relays 1-8

  }

  for (int i = 0; i < 16; i++) {

    pcf8575_RL.write(i, HIGH);  // Turn off relays 9-24

  }

  Serial.println("System started: Input state controlling 24 relays");

}

void loop() {

if (pcf8575_IN1.read(8)==0) pcf8575_IN2.write(8, LOW); else pcf8575_IN2.write(8, HIGH);

if (pcf8575_IN1.read(9)==0) pcf8575_IN2.write(9, LOW); else pcf8575_IN2.write(9, HIGH);

if (pcf8575_IN1.read(10)==0) pcf8575_IN2.write(10, LOW); else pcf8575_IN2.write(10, HIGH);

if (pcf8575_IN1.read(11)==0) pcf8575_IN2.write(11, LOW); else pcf8575_IN2.write(11, HIGH);

if (pcf8575_IN1.read(12)==0) pcf8575_IN2.write(12, LOW); else pcf8575_IN2.write(12, HIGH);

if (pcf8575_IN1.read(13)==0) pcf8575_IN2.write(13, LOW); else pcf8575_IN2.write(13, HIGH);

if (pcf8575_IN1.read(14)==0) pcf8575_IN2.write(14, LOW); else pcf8575_IN2.write(14, HIGH);

if (pcf8575_IN1.read(15)==0) pcf8575_IN2.write(15, LOW); else pcf8575_IN2.write(15, HIGH);

if (pcf8575_IN1.read(0)==0) pcf8575_RL.write(0, LOW); else pcf8575_RL.write(0, HIGH);

if (pcf8575_IN1.read(1)==0) pcf8575_RL.write(1, LOW); else pcf8575_RL.write(1, HIGH);

if (pcf8575_IN1.read(2)==0) pcf8575_RL.write(2, LOW); else pcf8575_RL.write(2, HIGH);

if (pcf8575_IN1.read(3)==0) pcf8575_RL.write(3, LOW); else pcf8575_RL.write(3, HIGH);

if (pcf8575_IN1.read(4)==0) pcf8575_RL.write(4, LOW); else pcf8575_RL.write(4, HIGH);

if (pcf8575_IN1.read(5)==0) pcf8575_RL.write(5, LOW); else pcf8575_RL.write(5, HIGH);

if (pcf8575_IN1.read(6)==0) pcf8575_RL.write(6, LOW); else pcf8575_RL.write(6, HIGH);

if (pcf8575_IN1.read(7)==0) pcf8575_RL.write(7, LOW); else pcf8575_RL.write(7, HIGH);

if (pcf8575_IN2.read(0)==0) pcf8575_RL.write(8, LOW); else pcf8575_RL.write(8, HIGH);

if (pcf8575_IN2.read(1)==0) pcf8575_RL.write(9, LOW); else pcf8575_RL.write(9, HIGH);

if (pcf8575_IN2.read(2)==0) pcf8575_RL.write(10, LOW); else pcf8575_RL.write(10, HIGH);

if (pcf8575_IN2.read(3)==0) pcf8575_RL.write(11, LOW); else pcf8575_RL.write(11, HIGH);

if (pcf8575_IN2.read(4)==0) pcf8575_RL.write(12, LOW); else pcf8575_RL.write(12, HIGH);

if (pcf8575_IN2.read(5)==0) pcf8575_RL.write(13, LOW); else pcf8575_RL.write(13, HIGH);

if (pcf8575_IN2.read(6)==0) pcf8575_RL.write(14, LOW); else pcf8575_RL.write(14, HIGH);

if (pcf8575_IN2.read(7)==0) pcf8575_RL.write(15, LOW); else pcf8575_RL.write(15, HIGH);

  // Delay for 500 milliseconds

  delay(200);

}

arduino ino file download:

.zip

11-input-trigger-output.zip (Size: 1.18 KB / Downloads: 305)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

11-input-trigger-output.ino.merged.zip (Size: 192.44 KB / Downloads: 323)

[arduino code examples for B24]-11 digital INPUT trigger OUTPUT directly

Posted by: admin - 07-31-2025, 07:08 AM - Forum: B24 - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This program reads 24 input states from two PCF8575 I/O expanders and 

 * controls a corresponding 24-channel relay module. 

 * When an input pin is LOW, the corresponding relay is turned ON (LOW means ON for the relay).

 * When the input pin is HIGH, the corresponding relay is turned OFF.

 *

 * Pin Definitions:

 * - SDA: GPIO 8

 * - SCL: GPIO 18

 * - Input I2C Address 1 (inputs 1-16): 0x24

 * - Input/Relay I2C Address 2 (inputs 17-24 and relays 1-8): 0x26

 * - Relay I2C Address 3 (relays 9-24): 0x25

 */

#include <Wire.h>        // I2C communication

#include <PCF8575.h>     // Library to control the PCF8575 I/O expander

// Define I2C pins

#define SDA 8            // SDA pin

#define SCL 18           // SCL pin

// I2C addresses for the PCF8575 modules

#define INPUT_I2C_ADDRESS_1 0x22   // I2C address for the first input PCF8575 module (inputs 1-16)

#define INPUT_RELAY_I2C_ADDRESS_2 0x25   // I2C address for inputs 17-24 and relays 1-8

#define RELAY_I2C_ADDRESS_3 0x24   // I2C address for relays 9-24

PCF8575 pcf8575_IN1(INPUT_I2C_ADDRESS_1);    // Create an object for the first input PCF8575 (inputs 1-16)

PCF8575 pcf8575_IN2(INPUT_RELAY_I2C_ADDRESS_2);    // Create an object for the second input PCF8575 (inputs 17-24 and relays 1-8)

PCF8575 pcf8575_RL(RELAY_I2C_ADDRESS_3);    // Create an object for the relay PCF8575 (relays 9-24)

void setup() {

  // Initialize I2C communication

  Wire.begin(SDA, SCL);

  // Initialize serial communication

  Serial.begin(115200);

  // Initialize input and relay modules

  pcf8575_IN1.begin();  // For inputs 1-16

  pcf8575_IN2.begin();  // For inputs 17-24 and relays 1-8

  pcf8575_RL.begin();   // For relays 9-24

  // Turn off all relays at the start (LOW means OFF)

  for (int i = 8; i < 16; i++) {

    pcf8575_IN2.write(i, HIGH);  // Turn off relays 1-8

  }

  for (int i = 0; i < 16; i++) {

    pcf8575_RL.write(i, HIGH);  // Turn off relays 9-24

  }

  Serial.println("System started: Input state controlling 24 relays");

}

void loop() {

if (pcf8575_IN1.read(8)==0) pcf8575_IN2.write(8, LOW); else pcf8575_IN2.write(8, HIGH);

if (pcf8575_IN1.read(9)==0) pcf8575_IN2.write(9, LOW); else pcf8575_IN2.write(9, HIGH);

if (pcf8575_IN1.read(10)==0) pcf8575_IN2.write(10, LOW); else pcf8575_IN2.write(10, HIGH);

if (pcf8575_IN1.read(11)==0) pcf8575_IN2.write(11, LOW); else pcf8575_IN2.write(11, HIGH);

if (pcf8575_IN1.read(12)==0) pcf8575_IN2.write(12, LOW); else pcf8575_IN2.write(12, HIGH);

if (pcf8575_IN1.read(13)==0) pcf8575_IN2.write(13, LOW); else pcf8575_IN2.write(13, HIGH);

if (pcf8575_IN1.read(14)==0) pcf8575_IN2.write(14, LOW); else pcf8575_IN2.write(14, HIGH);

if (pcf8575_IN1.read(15)==0) pcf8575_IN2.write(15, LOW); else pcf8575_IN2.write(15, HIGH);

if (pcf8575_IN1.read(0)==0) pcf8575_RL.write(0, LOW); else pcf8575_RL.write(0, HIGH);

if (pcf8575_IN1.read(1)==0) pcf8575_RL.write(1, LOW); else pcf8575_RL.write(1, HIGH);

if (pcf8575_IN1.read(2)==0) pcf8575_RL.write(2, LOW); else pcf8575_RL.write(2, HIGH);

if (pcf8575_IN1.read(3)==0) pcf8575_RL.write(3, LOW); else pcf8575_RL.write(3, HIGH);

if (pcf8575_IN1.read(4)==0) pcf8575_RL.write(4, LOW); else pcf8575_RL.write(4, HIGH);

if (pcf8575_IN1.read(5)==0) pcf8575_RL.write(5, LOW); else pcf8575_RL.write(5, HIGH);

if (pcf8575_IN1.read(6)==0) pcf8575_RL.write(6, LOW); else pcf8575_RL.write(6, HIGH);

if (pcf8575_IN1.read(7)==0) pcf8575_RL.write(7, LOW); else pcf8575_RL.write(7, HIGH);

if (pcf8575_IN2.read(0)==0) pcf8575_RL.write(8, LOW); else pcf8575_RL.write(8, HIGH);

if (pcf8575_IN2.read(1)==0) pcf8575_RL.write(9, LOW); else pcf8575_RL.write(9, HIGH);

if (pcf8575_IN2.read(2)==0) pcf8575_RL.write(10, LOW); else pcf8575_RL.write(10, HIGH);

if (pcf8575_IN2.read(3)==0) pcf8575_RL.write(11, LOW); else pcf8575_RL.write(11, HIGH);

if (pcf8575_IN2.read(4)==0) pcf8575_RL.write(12, LOW); else pcf8575_RL.write(12, HIGH);

if (pcf8575_IN2.read(5)==0) pcf8575_RL.write(13, LOW); else pcf8575_RL.write(13, HIGH);

if (pcf8575_IN2.read(6)==0) pcf8575_RL.write(14, LOW); else pcf8575_RL.write(14, HIGH);

if (pcf8575_IN2.read(7)==0) pcf8575_RL.write(15, LOW); else pcf8575_RL.write(15, HIGH);

  // Delay for 500 milliseconds

  delay(200);

}

arduino ino file download:

.zip

11-input-trigger-output.zip (Size: 1.18 KB / Downloads: 322)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

11-input-trigger-output.ino.merged.zip (Size: 192.44 KB / Downloads: 326)

[arduino code examples for B32M]-11 digital INPUT trigger OUTPUT directly

Posted by: admin - 07-31-2025, 07:08 AM - Forum: B32M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This program reads 32 input states from two PCF8575 I/O expanders and 

 * controls a corresponding 32-channel relay module. 

 * When an input pin is LOW, the corresponding relay is turned ON (LOW means ON for the relay).

 * When the input pin is HIGH, the corresponding relay is turned OFF.

 *

 * Pin Definitions:

 * - SDA: GPIO 8

 * - SCL: GPIO 18

 * - Input I2C Address 1 (inputs 1-16): 0x24

 * - Input/Relay I2C Address 2 (inputs 17-24 and relays 1-8): 0x26

 * - Relay I2C Address 3 (relays 9-24): 0x25

 */

#include <Wire.h>        // I2C communication

#include <PCF8575.h>     // Library to control the PCF8575 I/O expander

// Define I2C pins

#define SDA 8            // SDA pin

#define SCL 18           // SCL pin

// I2C addresses for the PCF8575 modules

#define INPUT_I2C_ADDRESS_1 0x22   // I2C address for the first input PCF8575 module (inputs 1-16)

#define INPUT_RELAY_I2C_ADDRESS_2 0x25   // I2C address for inputs 17-24 and relays 9-16

#define RELAY_I2C_ADDRESS_3 0x24   // I2C address for relays 17-32

#define RELAY_I2C_ADDRESS_4 0x26   // I2C address for relays 1-8

PCF8575 pcf8575_IN1(INPUT_I2C_ADDRESS_1);    // Create an object for the first input PCF8575 (inputs 1-16)

PCF8575 pcf8575_IN2(INPUT_RELAY_I2C_ADDRESS_2);    // Create an object for the second input PCF8575 (inputs 17-24 and relays 9-16)

PCF8575 pcf8575_RL(RELAY_I2C_ADDRESS_3);    // Create an object for the relay PCF8575 (relays 17-32)

PCF8575 pcf8575_RL2(RELAY_I2C_ADDRESS_4);    // Create an object for the relay PCF8575 (relays 1-8)

void setup() {

  // Initialize I2C communication

  Wire.begin(SDA, SCL);

  // Initialize serial communication

  Serial.begin(115200);

  // Initialize input and relay modules

  pcf8575_IN1.begin();  // For inputs 1-16

  pcf8575_IN2.begin();  // For inputs 17-24 and relays 1-8

  pcf8575_RL.begin();   // For relays 9-24

  pcf8575_RL2.begin();   // For relays 25-32

  // Turn off all relays at the start (LOW means OFF)

  for (int i = 8; i < 16; i++) {

    pcf8575_RL2.write(i, HIGH);  // Turn off relays 1-8

  }

  for (int i = 8; i < 16; i++) {

    pcf8575_IN2.write(i, HIGH);  // Turn off relays 9-16

  }

  for (int i = 0; i < 16; i++) {

    pcf8575_RL.write(i, HIGH);  // Turn off relays 17-32

  }

  Serial.println("System started: Input state controlling 32 relays");

}

void loop() {

if (pcf8575_IN1.read(8)==0) pcf8575_RL2.write(8, LOW); else pcf8575_RL2.write(8, HIGH);

if (pcf8575_IN1.read(9)==0) pcf8575_RL2.write(9, LOW); else pcf8575_RL2.write(9, HIGH);

if (pcf8575_IN1.read(10)==0) pcf8575_RL2.write(10, LOW); else pcf8575_RL2.write(10, HIGH);

if (pcf8575_IN1.read(11)==0) pcf8575_RL2.write(11, LOW); else pcf8575_RL2.write(11, HIGH);

if (pcf8575_IN1.read(12)==0) pcf8575_RL2.write(12, LOW); else pcf8575_RL2.write(12, HIGH);

if (pcf8575_IN1.read(13)==0) pcf8575_RL2.write(13, LOW); else pcf8575_RL2.write(13, HIGH);

if (pcf8575_IN1.read(14)==0) pcf8575_RL2.write(14, LOW); else pcf8575_RL2.write(14, HIGH);

if (pcf8575_IN1.read(15)==0) pcf8575_RL2.write(15, LOW); else pcf8575_RL2.write(15, HIGH);

if (pcf8575_IN1.read(0)==0) pcf8575_IN2.write(8, LOW); else pcf8575_IN2.write(8, HIGH);

if (pcf8575_IN1.read(1)==0) pcf8575_IN2.write(9, LOW); else pcf8575_IN2.write(9, HIGH);

if (pcf8575_IN1.read(2)==0) pcf8575_IN2.write(10, LOW); else pcf8575_IN2.write(10, HIGH);

if (pcf8575_IN1.read(3)==0) pcf8575_IN2.write(11, LOW); else pcf8575_IN2.write(11, HIGH);

if (pcf8575_IN1.read(4)==0) pcf8575_IN2.write(12, LOW); else pcf8575_IN2.write(12, HIGH);

if (pcf8575_IN1.read(5)==0) pcf8575_IN2.write(13, LOW); else pcf8575_IN2.write(13, HIGH);

if (pcf8575_IN1.read(6)==0) pcf8575_IN2.write(14, LOW); else pcf8575_IN2.write(14, HIGH);

if (pcf8575_IN1.read(7)==0) pcf8575_IN2.write(15, LOW); else pcf8575_IN2.write(15, HIGH);

if (pcf8575_IN2.read(0)==0) pcf8575_RL.write(0, LOW); else pcf8575_RL.write(0, HIGH);

if (pcf8575_IN2.read(1)==0) pcf8575_RL.write(1, LOW); else pcf8575_RL.write(1, HIGH);

if (pcf8575_IN2.read(2)==0) pcf8575_RL.write(2, LOW); else pcf8575_RL.write(2, HIGH);

if (pcf8575_IN2.read(3)==0) pcf8575_RL.write(3, LOW); else pcf8575_RL.write(3, HIGH);

if (pcf8575_IN2.read(4)==0) pcf8575_RL.write(4, LOW); else pcf8575_RL.write(4, HIGH);

if (pcf8575_IN2.read(5)==0) pcf8575_RL.write(5, LOW); else pcf8575_RL.write(5, HIGH);

if (pcf8575_IN2.read(6)==0) pcf8575_RL.write(6, LOW); else pcf8575_RL.write(6, HIGH);

if (pcf8575_IN2.read(7)==0) pcf8575_RL.write(7, LOW); else pcf8575_RL.write(7, HIGH);

if (pcf8575_RL2.read(0)==0) pcf8575_RL.write(8, LOW); else pcf8575_RL.write(8, HIGH);

if (pcf8575_RL2.read(1)==0) pcf8575_RL.write(9, LOW); else pcf8575_RL.write(9, HIGH);

if (pcf8575_RL2.read(2)==0) pcf8575_RL.write(10, LOW); else pcf8575_RL.write(10, HIGH);

if (pcf8575_RL2.read(3)==0) pcf8575_RL.write(11, LOW); else pcf8575_RL.write(11, HIGH);

if (pcf8575_RL2.read(4)==0) pcf8575_RL.write(12, LOW); else pcf8575_RL.write(12, HIGH);

if (pcf8575_RL2.read(5)==0) pcf8575_RL.write(13, LOW); else pcf8575_RL.write(13, HIGH);

if (pcf8575_RL2.read(6)==0) pcf8575_RL.write(14, LOW); else pcf8575_RL.write(14, HIGH);

if (pcf8575_RL2.read(7)==0) pcf8575_RL.write(15, LOW); else pcf8575_RL.write(15, HIGH);

  // Delay for 500 milliseconds

  delay(200);

}

arduino ino file download:

.zip

11-input-trigger-output.zip (Size: 1.28 KB / Downloads: 8)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

11-input-trigger-output.ino.merged.zip (Size: 198.08 KB / Downloads: 12)

[arduino code examples for B24M]-10 Print TEXT on SSD1306 OLED displayer

Posted by: admin - 07-31-2025, 07:06 AM - Forum: B24M - Replies (4)

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program demonstrates how to display text on an SSD1306 128x64 OLED display using the U8g2 library.

 * The program draws two lines of text on the display:

 * - The first line is "KINCONY" in a larger font.

 * - The second line is "www.kincony.com" in a smaller font.

 * 

 * The display is connected via I2C (software implementation) with:

 * - SCL (clock) on pin IO18

 * - SDA (data) on pin IO8

 * 

 * The display's I2C address is set to 0x3C.

 */

#include <U8g2lib.h>  // Include the U8g2 library for controlling the OLED display

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

// Initialize the display using the software I2C method (SCL = IO18, SDA = IO8)

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,  18, 8, U8X8_PIN_NONE);  // Screen rotation: U8G2_R0

// Function to display page 1 content

void page1() {

  // Set font size 18 for the larger "KINCONY" text

  u8g2.setFont(u8g2_font_timR18_tf);  // Use the Times Roman font, size 18

  u8g2.setFontPosTop();               // Set the text position at the top of the display

  u8g2.setCursor(5, 0);               // Position the cursor at coordinates (5, 0)

  u8g2.print("KINCONY");              // Display the text "KINCONY" on the screen

  // Set font size 12 for the smaller "www.kincony.com" text

  u8g2.setFont(u8g2_font_timR12_tf);  // Use the Times Roman font, size 12

  u8g2.setCursor(0, 40);              // Position the cursor at coordinates (0, 40)

  u8g2.print("www.kincony.com");      // Display the text "www.kincony.com"

}

// Setup function, runs once when the program starts

void setup() {

  // Set the I2C address for the display to 0x3C

  u8g2.setI2CAddress(0x3C*2);  // I2C address shift for 8-bit format

  // Initialize the display

  u8g2.begin();

  // Enable UTF-8 character printing for the display

  u8g2.enableUTF8Print();  // Allow UTF-8 encoded text to be printed

}

// Main loop function, continuously runs after setup()

void loop() {

  // Begin the display drawing process

  u8g2.firstPage();  // Prepare the first page for drawing

  do {

    // Call the page1() function to draw content on the display

    page1();

  } while (u8g2.nextPage());  // Continue to the next page until all pages are drawn

}

arduino ino file download:

.zip

10-oled-ssd1306.zip (Size: 1.11 KB / Downloads: 309)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

10-oled-ssd1306.ino.merged.zip (Size: 202.58 KB / Downloads: 318)

[arduino code examples for B24]-10 Print TEXT on SSD1306 OLED displayer

Posted by: admin - 07-31-2025, 07:06 AM - Forum: B24 - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program demonstrates how to display text on an SSD1306 128x64 OLED display using the U8g2 library.

 * The program draws two lines of text on the display:

 * - The first line is "KINCONY" in a larger font.

 * - The second line is "www.kincony.com" in a smaller font.

 * 

 * The display is connected via I2C (software implementation) with:

 * - SCL (clock) on pin IO18

 * - SDA (data) on pin IO8

 * 

 * The display's I2C address is set to 0x3C.

 */

#include <U8g2lib.h>  // Include the U8g2 library for controlling the OLED display

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

// Initialize the display using the software I2C method (SCL = IO18, SDA = IO8)

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,  18, 8, U8X8_PIN_NONE);  // Screen rotation: U8G2_R0

// Function to display page 1 content

void page1() {

  // Set font size 18 for the larger "KINCONY" text

  u8g2.setFont(u8g2_font_timR18_tf);  // Use the Times Roman font, size 18

  u8g2.setFontPosTop();               // Set the text position at the top of the display

  u8g2.setCursor(5, 0);               // Position the cursor at coordinates (5, 0)

  u8g2.print("KINCONY");              // Display the text "KINCONY" on the screen

  // Set font size 12 for the smaller "www.kincony.com" text

  u8g2.setFont(u8g2_font_timR12_tf);  // Use the Times Roman font, size 12

  u8g2.setCursor(0, 40);              // Position the cursor at coordinates (0, 40)

  u8g2.print("www.kincony.com");      // Display the text "www.kincony.com"

}

// Setup function, runs once when the program starts

void setup() {

  // Set the I2C address for the display to 0x3C

  u8g2.setI2CAddress(0x3C*2);  // I2C address shift for 8-bit format

  // Initialize the display

  u8g2.begin();

  // Enable UTF-8 character printing for the display

  u8g2.enableUTF8Print();  // Allow UTF-8 encoded text to be printed

}

// Main loop function, continuously runs after setup()

void loop() {

  // Begin the display drawing process

  u8g2.firstPage();  // Prepare the first page for drawing

  do {

    // Call the page1() function to draw content on the display

    page1();

  } while (u8g2.nextPage());  // Continue to the next page until all pages are drawn

}

arduino ino file download:

.zip

10-oled-ssd1306.zip (Size: 1.11 KB / Downloads: 306)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

10-oled-ssd1306.ino.merged.zip (Size: 202.58 KB / Downloads: 336)

[arduino code examples for B32M]-10 Print TEXT on SSD1306 OLED displayer

Posted by: admin - 07-31-2025, 07:06 AM - Forum: B32M - Replies (4)

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program demonstrates how to display text on an SSD1306 128x64 OLED display using the U8g2 library.

 * The program draws two lines of text on the display:

 * - The first line is "KINCONY" in a larger font.

 * - The second line is "www.kincony.com" in a smaller font.

 * 

 * The display is connected via I2C (software implementation) with:

 * - SCL (clock) on pin IO18

 * - SDA (data) on pin IO8

 * 

 * The display's I2C address is set to 0x3C.

 */

#include <U8g2lib.h>  // Include the U8g2 library for controlling the OLED display

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

// Initialize the display using the software I2C method (SCL = IO18, SDA = IO8)

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,  18, 8, U8X8_PIN_NONE);  // Screen rotation: U8G2_R0

// Function to display page 1 content

void page1() {

  // Set font size 18 for the larger "KINCONY" text

  u8g2.setFont(u8g2_font_timR18_tf);  // Use the Times Roman font, size 18

  u8g2.setFontPosTop();               // Set the text position at the top of the display

  u8g2.setCursor(5, 0);               // Position the cursor at coordinates (5, 0)

  u8g2.print("KINCONY");              // Display the text "KINCONY" on the screen

  // Set font size 12 for the smaller "www.kincony.com" text

  u8g2.setFont(u8g2_font_timR12_tf);  // Use the Times Roman font, size 12

  u8g2.setCursor(0, 40);              // Position the cursor at coordinates (0, 40)

  u8g2.print("www.kincony.com");      // Display the text "www.kincony.com"

}

// Setup function, runs once when the program starts

void setup() {

  // Set the I2C address for the display to 0x3C

  u8g2.setI2CAddress(0x3C*2);  // I2C address shift for 8-bit format

  // Initialize the display

  u8g2.begin();

  // Enable UTF-8 character printing for the display

  u8g2.enableUTF8Print();  // Allow UTF-8 encoded text to be printed

}

// Main loop function, continuously runs after setup()

void loop() {

  // Begin the display drawing process

  u8g2.firstPage();  // Prepare the first page for drawing

  do {

    // Call the page1() function to draw content on the display

    page1();

  } while (u8g2.nextPage());  // Continue to the next page until all pages are drawn

}

arduino ino file download:

.zip

10-oled-ssd1306.zip (Size: 1.11 KB / Downloads: 312)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

10-oled-ssd1306.ino.merged.zip (Size: 202.58 KB / Downloads: 323)

[arduino code examples for B24M]-09 how to communication with Tuya WiFi module

Posted by: admin - 07-31-2025, 07:05 AM - Forum: B24M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program implements communication between ESP32 and the Tuya module

 * via UART (serial communication). It listens for specific packets from the Tuya module

 * and responds according to the predefined commands.

 * 

 * Functionality:

 * 1. When the ESP32 receives a heartbeat packet (55 AA 00 00 00 00 FF),

 *    it sends a heartbeat response (55 AA 03 00 00 01 00 03).

 * 2. When the ESP32 receives a product information request (55 AA 00 01 00 00 00),

 *    it sends a product information response (55 AA 03 01 ...).

 * 3. When the ESP32 receives a work mode request (55 AA 00 02 00 00 01),

 *    it sends a work mode response (55 AA 03 02 00 03 10 1C 14 47).

 * 4. When the ESP32 receives a network status request (55 AA 00 03 00 01 00 03),

 *    it sends a network status response (55 AA 03 03 00 00 05).

 * 5. Subsequent heartbeat packets (55 AA 00 00 00 00 FF) are responded to with

 *    (55 AA 03 00 00 01 01 04).

 */

#include <HardwareSerial.h>

// Create a HardwareSerial object for UART communication on ESP32

HardwareSerial tuyaSerial(1);

// Define the GPIO pins for TXD and RXD used for serial communication

#define TXD_PIN 39

#define RXD_PIN 38

// Set the baud rate for Tuya module communication to 9600

#define BAUD_RATE 9600

// Define the response packets for different commands from the Tuya module

// Heartbeat response: 55 AA 03 00 00 01 00 03

uint8_t heartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x00, 0x03};

// Product info response with a detailed payload (e.g., firmware version, product name, etc.)

uint8_t productInfoResponse[] = {

  0x55, 0xAA, 0x03, 0x01, 0x00, 0x2A, 0x7B, 0x22, 0x70, 0x22, 0x3A, 0x22, 

  0x63, 0x68, 0x6D, 0x7A, 0x6C, 0x67, 0x6A, 0x70, 0x61, 0x64, 0x70, 0x71, 

  0x78, 0x64, 0x6B, 0x6F, 0x22, 0x2C, 0x22, 0x76, 0x22, 0x3A, 0x22, 0x31, 

  0x2E, 0x30, 0x2E, 0x30, 0x22, 0x2C, 0x22, 0x6D, 0x22, 0x3A, 0x30, 0x7D, 0xAA

};

// Work mode response: 55 AA 03 02 00 03 10 1C 14 47

uint8_t workModeResponse[] = {0x55, 0xAA, 0x03, 0x02, 0x00, 0x03, 0x10, 0x1C, 0x14, 0x47};

// Network status response: 55 AA 03 03 00 00 05

uint8_t netStatusResponse[] = {0x55, 0xAA, 0x03, 0x03, 0x00, 0x00, 0x05};

// Subsequent heartbeat response: 55 AA 03 00 00 01 01 04

uint8_t secondHeartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x01, 0x04};

void setup() {

  // Initialize the serial communication for debugging at 115200 baud rate

  Serial.begin(115200);

  // Initialize the serial communication with Tuya module at 9600 baud rate

  tuyaSerial.begin(BAUD_RATE, SERIAL_8N1, RXD_PIN, TXD_PIN);

  // Debug message to indicate that the serial communication has been initialized

  Serial.println("ESP32-Tuya serial communication initialized.");

}

void loop() {

  // Check if data is available from the Tuya module

  if (tuyaSerial.available()) {

    uint8_t incomingPacket[7];  // Array to store the received packet

    size_t bytesRead = tuyaSerial.readBytes(incomingPacket, 7); // Read 7 bytes from Tuya

    // Check if the packet has a valid header (0x55, 0xAA)

    if (bytesRead >= 2 && incomingPacket[0] == 0x55 && incomingPacket[1] == 0xAA) {

      // If less than 7 bytes were received, wait for more data

      if (bytesRead < 7) {

        Serial.println("Incomplete packet received. Waiting for remaining bytes...");

        delay(50); // Delay to allow more data to be received

        while (tuyaSerial.available()) {

          incomingPacket[bytesRead++] = tuyaSerial.read(); // Continue reading remaining bytes

          if (bytesRead >= 7) break;

        }

      }

      // If still less than 7 bytes, discard the incomplete packet

      if (bytesRead < 7) {

        Serial.println("Error: Incomplete packet discarded.");

        return;

      }

      // Debug: Print the received packet for logging

      Serial.print("Received packet: ");

      for (size_t i = 0; i < 7; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      // Call the function to process the received packet

      processTuyaPacket(incomingPacket, 7);

    } else {

      // If the header is invalid, discard the packet and flush the buffer

      Serial.print("Error: Invalid packet header. Data received: ");

      for (size_t i = 0; i < bytesRead; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      tuyaSerial.flush(); // Clear the serial buffer

    }

  }

  // Delay to avoid CPU overuse

  delay(100);

}

// Function to process the received packet and send the appropriate response

void processTuyaPacket(uint8_t* packet, size_t size) {

  // Ensure the packet size is 7 and the header is valid

  if (size == 7 && packet[0] == 0x55 && packet[1] == 0xAA) {

    // Determine the command in the packet (packet[2])

    switch(packet[2]) {

      case 0x00:

        if (packet[3] == 0x00 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0xFF) {

          Serial.println("Heartbeat received.");

          sendPacket(heartBeatResponse, sizeof(heartBeatResponse));

        } else if (packet[3] == 0x01 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x00) {

          Serial.println("Product info request received.");

          sendPacket(productInfoResponse, sizeof(productInfoResponse));

        } else if (packet[3] == 0x02 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x01) {

          Serial.println("Work mode request received.");

          sendPacket(workModeResponse, sizeof(workModeResponse));

        } else if (packet[3] == 0x03 && packet[4] == 0x00 && packet[5] == 0x01 && packet[6] == 0x00) {

          Serial.println("Network status request received.");

          sendPacket(netStatusResponse, sizeof(netStatusResponse));

        }

        break;

      default:

        Serial.println("Error: Unhandled command received.");

        break;

    }

  }

}

// Function to send the response packet to the Tuya module

void sendPacket(uint8_t* packet, size_t size) {

  // Send the packet via UART to Tuya module

  tuyaSerial.write(packet, size);

  // Debug: Print the sent packet for logging

  Serial.print("Sent packet: ");

  for (size_t i = 0; i < size; i++) {

    Serial.print(packet[i], HEX);

    Serial.print(" ");

  }

  Serial.println();

}

arduino ino file download:

.zip

9-tuya-wifi-config.zip (Size: 2 KB / Downloads: 333)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

9-tuya-wifi-config.ino.merged.zip (Size: 187.17 KB / Downloads: 316)

[arduino code examples for B24]-09 how to communication with Tuya WiFi module

Posted by: admin - 07-31-2025, 07:05 AM - Forum: B24 - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program implements communication between ESP32 and the Tuya module

 * via UART (serial communication). It listens for specific packets from the Tuya module

 * and responds according to the predefined commands.

 * 

 * Functionality:

 * 1. When the ESP32 receives a heartbeat packet (55 AA 00 00 00 00 FF),

 *    it sends a heartbeat response (55 AA 03 00 00 01 00 03).

 * 2. When the ESP32 receives a product information request (55 AA 00 01 00 00 00),

 *    it sends a product information response (55 AA 03 01 ...).

 * 3. When the ESP32 receives a work mode request (55 AA 00 02 00 00 01),

 *    it sends a work mode response (55 AA 03 02 00 03 10 1C 14 47).

 * 4. When the ESP32 receives a network status request (55 AA 00 03 00 01 00 03),

 *    it sends a network status response (55 AA 03 03 00 00 05).

 * 5. Subsequent heartbeat packets (55 AA 00 00 00 00 FF) are responded to with

 *    (55 AA 03 00 00 01 01 04).

 */

#include <HardwareSerial.h>

// Create a HardwareSerial object for UART communication on ESP32

HardwareSerial tuyaSerial(1);

// Define the GPIO pins for TXD and RXD used for serial communication

#define TXD_PIN 39

#define RXD_PIN 38

// Set the baud rate for Tuya module communication to 9600

#define BAUD_RATE 9600

// Define the response packets for different commands from the Tuya module

// Heartbeat response: 55 AA 03 00 00 01 00 03

uint8_t heartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x00, 0x03};

// Product info response with a detailed payload (e.g., firmware version, product name, etc.)

uint8_t productInfoResponse[] = {

  0x55, 0xAA, 0x03, 0x01, 0x00, 0x2A, 0x7B, 0x22, 0x70, 0x22, 0x3A, 0x22, 

  0x63, 0x68, 0x6D, 0x7A, 0x6C, 0x67, 0x6A, 0x70, 0x61, 0x64, 0x70, 0x71, 

  0x78, 0x64, 0x6B, 0x6F, 0x22, 0x2C, 0x22, 0x76, 0x22, 0x3A, 0x22, 0x31, 

  0x2E, 0x30, 0x2E, 0x30, 0x22, 0x2C, 0x22, 0x6D, 0x22, 0x3A, 0x30, 0x7D, 0xAA

};

// Work mode response: 55 AA 03 02 00 03 10 1C 14 47

uint8_t workModeResponse[] = {0x55, 0xAA, 0x03, 0x02, 0x00, 0x03, 0x10, 0x1C, 0x14, 0x47};

// Network status response: 55 AA 03 03 00 00 05

uint8_t netStatusResponse[] = {0x55, 0xAA, 0x03, 0x03, 0x00, 0x00, 0x05};

// Subsequent heartbeat response: 55 AA 03 00 00 01 01 04

uint8_t secondHeartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x01, 0x04};

void setup() {

  // Initialize the serial communication for debugging at 115200 baud rate

  Serial.begin(115200);

  // Initialize the serial communication with Tuya module at 9600 baud rate

  tuyaSerial.begin(BAUD_RATE, SERIAL_8N1, RXD_PIN, TXD_PIN);

  // Debug message to indicate that the serial communication has been initialized

  Serial.println("ESP32-Tuya serial communication initialized.");

}

void loop() {

  // Check if data is available from the Tuya module

  if (tuyaSerial.available()) {

    uint8_t incomingPacket[7];  // Array to store the received packet

    size_t bytesRead = tuyaSerial.readBytes(incomingPacket, 7); // Read 7 bytes from Tuya

    // Check if the packet has a valid header (0x55, 0xAA)

    if (bytesRead >= 2 && incomingPacket[0] == 0x55 && incomingPacket[1] == 0xAA) {

      // If less than 7 bytes were received, wait for more data

      if (bytesRead < 7) {

        Serial.println("Incomplete packet received. Waiting for remaining bytes...");

        delay(50); // Delay to allow more data to be received

        while (tuyaSerial.available()) {

          incomingPacket[bytesRead++] = tuyaSerial.read(); // Continue reading remaining bytes

          if (bytesRead >= 7) break;

        }

      }

      // If still less than 7 bytes, discard the incomplete packet

      if (bytesRead < 7) {

        Serial.println("Error: Incomplete packet discarded.");

        return;

      }

      // Debug: Print the received packet for logging

      Serial.print("Received packet: ");

      for (size_t i = 0; i < 7; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      // Call the function to process the received packet

      processTuyaPacket(incomingPacket, 7);

    } else {

      // If the header is invalid, discard the packet and flush the buffer

      Serial.print("Error: Invalid packet header. Data received: ");

      for (size_t i = 0; i < bytesRead; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      tuyaSerial.flush(); // Clear the serial buffer

    }

  }

  // Delay to avoid CPU overuse

  delay(100);

}

// Function to process the received packet and send the appropriate response

void processTuyaPacket(uint8_t* packet, size_t size) {

  // Ensure the packet size is 7 and the header is valid

  if (size == 7 && packet[0] == 0x55 && packet[1] == 0xAA) {

    // Determine the command in the packet (packet[2])

    switch(packet[2]) {

      case 0x00:

        if (packet[3] == 0x00 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0xFF) {

          Serial.println("Heartbeat received.");

          sendPacket(heartBeatResponse, sizeof(heartBeatResponse));

        } else if (packet[3] == 0x01 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x00) {

          Serial.println("Product info request received.");

          sendPacket(productInfoResponse, sizeof(productInfoResponse));

        } else if (packet[3] == 0x02 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x01) {

          Serial.println("Work mode request received.");

          sendPacket(workModeResponse, sizeof(workModeResponse));

        } else if (packet[3] == 0x03 && packet[4] == 0x00 && packet[5] == 0x01 && packet[6] == 0x00) {

          Serial.println("Network status request received.");

          sendPacket(netStatusResponse, sizeof(netStatusResponse));

        }

        break;

      default:

        Serial.println("Error: Unhandled command received.");

        break;

    }

  }

}

// Function to send the response packet to the Tuya module

void sendPacket(uint8_t* packet, size_t size) {

  // Send the packet via UART to Tuya module

  tuyaSerial.write(packet, size);

  // Debug: Print the sent packet for logging

  Serial.print("Sent packet: ");

  for (size_t i = 0; i < size; i++) {

    Serial.print(packet[i], HEX);

    Serial.print(" ");

  }

  Serial.println();

}

arduino ino file download:

.zip

9-tuya-wifi-config.zip (Size: 2 KB / Downloads: 334)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

9-tuya-wifi-config.ino.merged.zip (Size: 187.17 KB / Downloads: 320)

[arduino code examples for B32M]-09 how to communication with Tuya WiFi module

Posted by: admin - 07-31-2025, 07:05 AM - Forum: B32M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 * 

 * This Arduino program implements communication between ESP32 and the Tuya module

 * via UART (serial communication). It listens for specific packets from the Tuya module

 * and responds according to the predefined commands.

 * 

 * Functionality:

 * 1. When the ESP32 receives a heartbeat packet (55 AA 00 00 00 00 FF),

 *    it sends a heartbeat response (55 AA 03 00 00 01 00 03).

 * 2. When the ESP32 receives a product information request (55 AA 00 01 00 00 00),

 *    it sends a product information response (55 AA 03 01 ...).

 * 3. When the ESP32 receives a work mode request (55 AA 00 02 00 00 01),

 *    it sends a work mode response (55 AA 03 02 00 03 10 1C 14 47).

 * 4. When the ESP32 receives a network status request (55 AA 00 03 00 01 00 03),

 *    it sends a network status response (55 AA 03 03 00 00 05).

 * 5. Subsequent heartbeat packets (55 AA 00 00 00 00 FF) are responded to with

 *    (55 AA 03 00 00 01 01 04).

 */

#include <HardwareSerial.h>

// Create a HardwareSerial object for UART communication on ESP32

HardwareSerial tuyaSerial(1);

// Define the GPIO pins for TXD and RXD used for serial communication

#define TXD_PIN 39

#define RXD_PIN 38

// Set the baud rate for Tuya module communication to 9600

#define BAUD_RATE 9600

// Define the response packets for different commands from the Tuya module

// Heartbeat response: 55 AA 03 00 00 01 00 03

uint8_t heartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x00, 0x03};

// Product info response with a detailed payload (e.g., firmware version, product name, etc.)

uint8_t productInfoResponse[] = {

  0x55, 0xAA, 0x03, 0x01, 0x00, 0x2A, 0x7B, 0x22, 0x70, 0x22, 0x3A, 0x22, 

  0x63, 0x68, 0x6D, 0x7A, 0x6C, 0x67, 0x6A, 0x70, 0x61, 0x64, 0x70, 0x71, 

  0x78, 0x64, 0x6B, 0x6F, 0x22, 0x2C, 0x22, 0x76, 0x22, 0x3A, 0x22, 0x31, 

  0x2E, 0x30, 0x2E, 0x30, 0x22, 0x2C, 0x22, 0x6D, 0x22, 0x3A, 0x30, 0x7D, 0xAA

};

// Work mode response: 55 AA 03 02 00 03 10 1C 14 47

uint8_t workModeResponse[] = {0x55, 0xAA, 0x03, 0x02, 0x00, 0x03, 0x10, 0x1C, 0x14, 0x47};

// Network status response: 55 AA 03 03 00 00 05

uint8_t netStatusResponse[] = {0x55, 0xAA, 0x03, 0x03, 0x00, 0x00, 0x05};

// Subsequent heartbeat response: 55 AA 03 00 00 01 01 04

uint8_t secondHeartBeatResponse[] = {0x55, 0xAA, 0x03, 0x00, 0x00, 0x01, 0x01, 0x04};

void setup() {

  // Initialize the serial communication for debugging at 115200 baud rate

  Serial.begin(115200);

  // Initialize the serial communication with Tuya module at 9600 baud rate

  tuyaSerial.begin(BAUD_RATE, SERIAL_8N1, RXD_PIN, TXD_PIN);

  // Debug message to indicate that the serial communication has been initialized

  Serial.println("ESP32-Tuya serial communication initialized.");

}

void loop() {

  // Check if data is available from the Tuya module

  if (tuyaSerial.available()) {

    uint8_t incomingPacket[7];  // Array to store the received packet

    size_t bytesRead = tuyaSerial.readBytes(incomingPacket, 7); // Read 7 bytes from Tuya

    // Check if the packet has a valid header (0x55, 0xAA)

    if (bytesRead >= 2 && incomingPacket[0] == 0x55 && incomingPacket[1] == 0xAA) {

      // If less than 7 bytes were received, wait for more data

      if (bytesRead < 7) {

        Serial.println("Incomplete packet received. Waiting for remaining bytes...");

        delay(50); // Delay to allow more data to be received

        while (tuyaSerial.available()) {

          incomingPacket[bytesRead++] = tuyaSerial.read(); // Continue reading remaining bytes

          if (bytesRead >= 7) break;

        }

      }

      // If still less than 7 bytes, discard the incomplete packet

      if (bytesRead < 7) {

        Serial.println("Error: Incomplete packet discarded.");

        return;

      }

      // Debug: Print the received packet for logging

      Serial.print("Received packet: ");

      for (size_t i = 0; i < 7; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      // Call the function to process the received packet

      processTuyaPacket(incomingPacket, 7);

    } else {

      // If the header is invalid, discard the packet and flush the buffer

      Serial.print("Error: Invalid packet header. Data received: ");

      for (size_t i = 0; i < bytesRead; i++) {

        Serial.print(incomingPacket[i], HEX);

        Serial.print(" ");

      }

      Serial.println();

      tuyaSerial.flush(); // Clear the serial buffer

    }

  }

  // Delay to avoid CPU overuse

  delay(100);

}

// Function to process the received packet and send the appropriate response

void processTuyaPacket(uint8_t* packet, size_t size) {

  // Ensure the packet size is 7 and the header is valid

  if (size == 7 && packet[0] == 0x55 && packet[1] == 0xAA) {

    // Determine the command in the packet (packet[2])

    switch(packet[2]) {

      case 0x00:

        if (packet[3] == 0x00 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0xFF) {

          Serial.println("Heartbeat received.");

          sendPacket(heartBeatResponse, sizeof(heartBeatResponse));

        } else if (packet[3] == 0x01 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x00) {

          Serial.println("Product info request received.");

          sendPacket(productInfoResponse, sizeof(productInfoResponse));

        } else if (packet[3] == 0x02 && packet[4] == 0x00 && packet[5] == 0x00 && packet[6] == 0x01) {

          Serial.println("Work mode request received.");

          sendPacket(workModeResponse, sizeof(workModeResponse));

        } else if (packet[3] == 0x03 && packet[4] == 0x00 && packet[5] == 0x01 && packet[6] == 0x00) {

          Serial.println("Network status request received.");

          sendPacket(netStatusResponse, sizeof(netStatusResponse));

        }

        break;

      default:

        Serial.println("Error: Unhandled command received.");

        break;

    }

  }

}

// Function to send the response packet to the Tuya module

void sendPacket(uint8_t* packet, size_t size) {

  // Send the packet via UART to Tuya module

  tuyaSerial.write(packet, size);

  // Debug: Print the sent packet for logging

  Serial.print("Sent packet: ");

  for (size_t i = 0; i < size; i++) {

    Serial.print(packet[i], HEX);

    Serial.print(" ");

  }

  Serial.println();

}

arduino ino file download:

.zip

9-tuya-wifi-config.zip (Size: 2 KB / Downloads: 337)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

9-tuya-wifi-config.ino.merged.zip (Size: 187.17 KB / Downloads: 319)

[arduino code examples for B24M]-08 Ethernet W5500 chip work with TCP Server mode

Posted by: admin - 07-31-2025, 07:04 AM - Forum: B24M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This Arduino program sets up an ESP32-S3 with a W5500 Ethernet module

 * as a TCP server. It listens on port 4196 and echoes back any string 

 * received from a client.

 *

 * Hardware connections:

 * - CLK: GPIO42

 * - MOSI: GPIO43

 * - MISO: GPIO44

 * - CS: GPIO41

 * - RST: GPIO1

 * - INT: GPIO2

 *

 * Static IP address: 192.168.3.55

 * Subnet Mask: 255.255.255.0

 * Gateway: 192.168.3.1

 * DNS: 192.168.3.1

 */

#include <SPI.h>

#include <Ethernet.h>

// Define the W5500 Ethernet module pins

#define W5500_CS_PIN  42

#define W5500_RST_PIN 44

#define W5500_INT_PIN 43

#define W5500_CLK_PIN 1

#define W5500_MOSI_PIN 2

#define W5500_MISO_PIN 41

// MAC address for your Ethernet shield (must be unique on your network)

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

// Static IP address configuration

IPAddress ip(192, 168, 3, 55);       // Static IP address

IPAddress subnet(255, 255, 255, 0);   // Subnet mask

IPAddress gateway(192, 168, 3, 1);    // Default gateway

IPAddress dns(192, 168, 3, 1);        // DNS server address

// Create an EthernetServer object to handle TCP connections

EthernetServer server(4196);

void setup() {

  // Initialize serial communication

  Serial.begin(115200);

  while (!Serial) {

    ; // Wait for serial port to connect

  }

  // Initialize the W5500 module

  pinMode(W5500_RST_PIN, OUTPUT);

  pinMode(W5500_INT_PIN, INPUT);

  digitalWrite(W5500_RST_PIN, LOW);  // Reset the W5500 module

  delay(100);                       // Wait for reset to complete

  digitalWrite(W5500_RST_PIN, HIGH); // Release reset

  // Initialize SPI with the correct pin definitions

  SPI.begin(W5500_CLK_PIN, W5500_MISO_PIN, W5500_MOSI_PIN);

  // Set up the Ethernet library with W5500-specific pins

  Ethernet.init(W5500_CS_PIN);

  // Start the Ethernet connection with static IP configuration

  Ethernet.begin(mac, ip, dns, gateway, subnet);

  // Print the IP address to the serial monitor

  Serial.print("IP Address: ");

  Serial.println(Ethernet.localIP());

  // Start listening for incoming TCP connections

  server.begin();

}

void loop() {

  // Check for incoming client connections

  EthernetClient client = server.available();

  if (client) {

    Serial.println("New client connected");

    // Read data from the client and echo it back

    while (client.connected()) {

      if (client.available()) {

        char c = client.read();

        server.write(c);

      }

    }

    // Close the connection when done

    client.stop();

    Serial.println("Client disconnected");

  }

}

arduino ino file download:

.zip

8-Ethernet-W5500.zip (Size: 1.23 KB / Downloads: 329)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

8-Ethernet-W5500.ino.merged.zip (Size: 191.07 KB / Downloads: 344)

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