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  [arduino code examples for T64M]-01 Turn ON/OFF OUTPUT
Posted by: admin - 04-20-2025, 07:34 AM - Forum: T64M - No Replies

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:

.zip   1-output.zip (Size: 1.03 KB / Downloads: 314)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   1-output.ino.merged.zip (Size: 192.12 KB / Downloads: 301)

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  T64M ESPHome yaml for home assistant
Posted by: admin - 04-20-2025, 07:32 AM - Forum: T64M - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* This program reads 8 input states from a PCF8575 I/O expander and
* controls a corresponding 8-channel relay module. When an input pin
* is LOW, the corresponding relay is turned ON (LOW means ON for the relay).
*
* Pin Definitions:
* - SDA: GPIO 8
* - SCL: GPIO 18
* - PCF8575 I2C Address: 0x24
*/

#include <Wire.h>
#include <PCF8575.h>

// I2C pins
#define SDA 8
#define SCL 18

// PCF8575 I2C address
#define INPUT_I2C_ADDRESS 0x24   

// Create PCF8575 object
PCF8575 pcf8575_IN(INPUT_I2C_ADDRESS);

void setup() {
  // Initialize I2C communication
  Wire.begin(SDA, SCL);

  // Initialize serial communication
  Serial.begin(115200);
 
  // Initialize PCF8575
  pcf8575_IN.begin();

  // Turn off all relays first (assuming LOW activates the relay)
  for (int i = 8; i < 16; i++) {
    pcf8575_IN.write(i, HIGH);  // Set to HIGH to turn off the relay
  }

  Serial.println("System started: Input state controlling 8 relays");
}

void loop() {
  // Read 16-bit state from PCF8575
  uint16_t inputState = pcf8575_IN.read16();

  for (int i = 0; i < 8; i++) {
    bool state = bitRead(inputState, i); // Read digital input state

    Serial.print("DI");
    Serial.print(i + 1);
    Serial.print(" State: ");
    Serial.println(state ? "HIGH" : "LOW");

    // Control relay (LOW activates the relay)
    pcf8575_IN.write(8 + i, state ? HIGH : LOW);
  }

  Serial.println("---------------------");
  delay(500);
}
yaml download: 

.txt   T64M-HA.txt (Size: 23.77 KB / Downloads: 218)

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  T64M ESP32-S3 IO pins define
Posted by: admin - 04-20-2025, 07:30 AM - Forum: T64M - No Replies

Code:
analog A1 (0-5v): GPIO7
analog A2 (0-5v): GPIO6
analog A3 (4-20mA): GPIO5
analog A4 (4-20mA): GPIO4

-----------------
IIC Bus-1:

SDA:GPIO48
SCL:GPIO47

PCF8575:(output1-16): i2c address:0x25
PCF8575:(output17-32): i2c address:0x24
PCF8575:(output33-48): i2c address:0x21
PCF8575:(output49-64): i2c address:0x20

24C02 EPROM i2c address: 0x50

------------------

IIC Bus-2:

SDA:GPIO12
SCL:GPIO11

PCF8575:(input1-16): i2c address:0x25
PCF8575:(input17-32): i2c address:0x24
PCF8575:(input33-48): i2c address:0x21
PCF8575:(input49-64): i2c address:0x20



-----------------

1-wire (pull-up resistance on PCB):
GPIO15
GPIO16
GPIO17
GPIO18

free GPIO:
GPIO8
GPIO9
GPIO10

-----------------

Ethernet (W5500) I/O define:

clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41

interrupt_pin: GPIO2
reset_pin: GPIO1

--------------------
RS485:
RXD:GPIO21
TXD:GPIO13
EN:GPIO14
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  [arduino code examples for F8]-11 Digital input trigger relay output
Posted by: admin - 04-20-2025, 07:28 AM - Forum: F8 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* This program reads 8 input states from a PCF8575 I/O expander and
* controls a corresponding 8-channel relay module. When an input pin
* is LOW, the corresponding relay is turned ON (LOW means ON for the relay).
*
* Pin Definitions:
* - SDA: GPIO 8
* - SCL: GPIO 18
* - PCF8575 I2C Address: 0x24
*/

#include <Wire.h>
#include <PCF8575.h>

// I2C pins
#define SDA 8
#define SCL 18

// PCF8575 I2C address
#define INPUT_I2C_ADDRESS 0x24   

// Create PCF8575 object
PCF8575 pcf8575_IN(INPUT_I2C_ADDRESS);

void setup() {
  // Initialize I2C communication
  Wire.begin(SDA, SCL);

  // Initialize serial communication
  Serial.begin(115200);
 
  // Initialize PCF8575
  pcf8575_IN.begin();

  // Turn off all relays first (assuming LOW activates the relay)
  for (int i = 8; i < 16; i++) {
    pcf8575_IN.write(i, HIGH);  // Set to HIGH to turn off the relay
  }

  Serial.println("System started: Input state controlling 8 relays");
}

void loop() {
  // Read 16-bit state from PCF8575
  uint16_t inputState = pcf8575_IN.read16();

  for (int i = 0; i < 8; i++) {
    bool state = bitRead(inputState, i); // Read digital input state

    Serial.print("DI");
    Serial.print(i + 1);
    Serial.print(" State: ");
    Serial.println(state ? "HIGH" : "LOW");

    // Control relay (LOW activates the relay)
    pcf8575_IN.write(8 + i, state ? HIGH : LOW);
  }

  Serial.println("---------------------");
  delay(500);
}
arduino ino file download:

.zip   11-input-trigger-output.zip (Size: 898 bytes / Downloads: 320)
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: 189.63 KB / Downloads: 326)

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  [arduino code examples for F8]-10 Print TEXT on SSD1306 OLED displayer
Posted by: admin - 04-20-2025, 07:21 AM - Forum: F8 - 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: 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: 201.24 KB / Downloads: 299)

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  [arduino code examples for F8]-09 how to communication with Tuya WiFi module
Posted by: admin - 04-20-2025, 07:19 AM - Forum: F8 - 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: 319)
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: 184.92 KB / Downloads: 335)

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  [arduino code examples for F8]-08 Ethernet W5500 chip work with TCP Server mode
Posted by: admin - 04-20-2025, 07:17 AM - Forum: F8 - 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  41
#define W5500_RST_PIN 1
#define W5500_INT_PIN 2
#define W5500_CLK_PIN 42
#define W5500_MOSI_PIN 43
#define W5500_MISO_PIN 44

// 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: 303)
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: 188.93 KB / Downloads: 319)

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  [arduino code examples for F8]-07 how to DS3231 RTC clock
Posted by: admin - 04-20-2025, 07:15 AM - Forum: F8 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* DS3231 RTC with Arduino
*
* This program demonstrates how to use the DS3231 RTC (Real-Time Clock) module with the Arduino.
* It includes functionality to:
* - Initialize the DS3231 RTC module
* - Read the current date and time from the RTC
* - Set the RTC time based on a serial command:Command format: DYYYY-MM-DDTHH:MM:SS
*
* Hardware Connections:
* - SDA: GPIO 8
* - SCL: GPIO 18
*/

#include <DS3231.h>
#include <Wire.h>

String serial_cmd_rcv = ""; // Serial port receiver

typedef struct
{
  byte year;    // Last two digits of the year, library adds 2000.
  byte month;
  byte day;
  byte hour;
  byte minute;
  byte second;
} MY_DATE_STR;

MY_DATE_STR my_date_str = {0};

// Define constants for relay control
#define OPEN_RLY_DATA    26
#define OPEN_RLY_MONTH   4
#define CLOSE_RLY_DATA   2
#define CLOSE_RLY_MONTH  5

// Define pin connections
#define SDA_PIN   8
#define SCL_PIN   18

DS3231 rtc; // Create an instance of the DS3231 RTC
bool h12Flag;
bool pmFlag;
static bool bCentury = false;
static bool old_level_high = false;
static bool old_level_low = false;


/**
* @brief Print the current time from the RTC to the Serial Monitor.
*/
static void PrintfCurTime()
{
  Serial.print("Current time is: ");
  int year = rtc.getYear() + 2000;
  Serial.print(year);
  Serial.print("-");

  Serial.print(rtc.getMonth(bCentury), DEC);
  Serial.print("-");

  Serial.print(rtc.getDate(), DEC);
  Serial.print(" ");

  Serial.print(rtc.getHour(h12Flag, pmFlag), DEC);
  Serial.print(":");
  Serial.print(rtc.getMinute(), DEC);
  Serial.print(":");
  Serial.println(rtc.getSecond(), DEC);
}

/**
* @brief Process serial commands to set the RTC time.
* Command format: DYYYY-MM-DDTHH:MM:SS
*/
static void GetSerialCmd()
{
  if (Serial.available() > 0)
  {
    delay(100);
    int num_read = Serial.available();
    while (num_read--)
      serial_cmd_rcv += char(Serial.read());
  }
  else return;

  serial_cmd_rcv.trim();

  if (serial_cmd_rcv == "current time")
  {
    PrintfCurTime();
    serial_cmd_rcv = "";
    return;
  }

  Serial.print("Received length: ");
  Serial.println(serial_cmd_rcv.length());

  int indexof_d = serial_cmd_rcv.indexOf('D');
  int indexof_t = serial_cmd_rcv.indexOf('T');

  Serial.print("D index: ");
  Serial.print(indexof_d);
  Serial.print(" T index: ");
  Serial.println(indexof_t);

  if (serial_cmd_rcv.length() != 20 ||
      serial_cmd_rcv.substring(0, 1) != "D" ||
      serial_cmd_rcv.substring(11, 12) != "T") 
  {
    Serial.println(serial_cmd_rcv);
    serial_cmd_rcv = "";
    return;
  }

  Serial.println("Setting time...");

  my_date_str.year = (byte)serial_cmd_rcv.substring(3, 5).toInt();
  my_date_str.month = (byte)serial_cmd_rcv.substring(6, 8).toInt();
  my_date_str.day = (byte)serial_cmd_rcv.substring(9, 11).toInt();
  my_date_str.hour = (byte)serial_cmd_rcv.substring(12, 14).toInt();
  my_date_str.minute = (byte)serial_cmd_rcv.substring(15, 17).toInt();
  my_date_str.second = (byte)serial_cmd_rcv.substring(18).toInt();

  rtc.setYear(my_date_str.year);
  rtc.setMonth(my_date_str.month);
  rtc.setDate(my_date_str.day);
  rtc.setHour(my_date_str.hour);
  rtc.setMinute(my_date_str.minute);
  rtc.setSecond(my_date_str.second);

  serial_cmd_rcv = "";

  Serial.println("Time set.");
}

void setup() {
  // Initialize the I2C interface
  Wire.begin(SDA_PIN, SCL_PIN, 40000);
 
  // Initialize Serial communication
  Serial.begin(115200);
   
  // Set the RTC to 24-hour mode
  rtc.setClockMode(false); // 24-hour format

  // Print current time to Serial Monitor
  PrintfCurTime();

  // Clear any remaining serial data
  while (Serial.read() >= 0) {}
}

void loop() {
  // Process incoming serial commands
  GetSerialCmd();
  delay(1000); // Delay for 1 second
}
arduino ino file download:

.zip   7-DS3231-RTC.zip (Size: 1.51 KB / Downloads: 305)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   7-DS3231-RTC.ino.merged.zip (Size: 191.08 KB / Downloads: 311)

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  [arduino code examples for F8]-06 How to use SD Card
Posted by: admin - 04-20-2025, 07:13 AM - Forum: F8 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* SD Card File Operations
*
* This program demonstrates basic file operations on an SD card using the ESP32.
* It includes functionality to:
* - Initialize and test the SD card
* - Read from, write to, append to, and delete files on the SD card
* - Measure file read and write performance
*
* Hardware Connections:
* - SCK: GPIO 11
* - MISO: GPIO 12
* - MOSI: GPIO 10
* - CS: GPIO 9
*/

#include "FS.h"
#include "SD.h"
#include "SPI.h"

// Pin definitions for SD card
#define SCK  11
#define MISO 12
#define MOSI 10
#define CS   9

/**
* @brief Reads the contents of a file from the SD card and prints it to the serial monitor.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to read.
*/
void readFile(fs::FS &fs, const char * path) {
  Serial.printf("Reading file: %s\n", path);

  File file = fs.open(path);
  if (!file) {
    Serial.println("Failed to open file for reading");
    return;
  }

  Serial.print("Read from file: ");
  while (file.available()) {
    Serial.print((char)file.read());
  }
  file.close();
}

/**
* @brief Writes a message to a file on the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to write.
* @param message Message to write to the file.
*/
void writeFile(fs::FS &fs, const char * path, const char * message) {
  Serial.printf("Writing file: %s\n", path);

  File file = fs.open(path, FILE_WRITE);
  if (!file) {
    Serial.println("Failed to open file for writing");
    return;
  }
  if (file.print(message)) {
    Serial.println("File written");
  } else {
    Serial.println("Write failed");
  }
  file.close();
}

/**
* @brief Appends a message to a file on the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to append.
* @param message Message to append to the file.
*/
void appendFile(fs::FS &fs, const char * path, const char * message) {
  Serial.printf("Appending to file: %s\n", path);

  File file = fs.open(path, FILE_APPEND);
  if (!file) {
    Serial.println("Failed to open file for appending");
    return;
  }
  if (file.print(message)) {
    Serial.println("Message appended");
  } else {
    Serial.println("Append failed");
  }
  file.close();
}

/**
* @brief Deletes a file from the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to delete.
*/
void deleteFile(fs::FS &fs, const char * path) {
  Serial.printf("Deleting file: %s\n", path);
  if (fs.remove(path)) {
    Serial.println("File deleted");
  } else {
    Serial.println("Delete failed");
  }
}

/**
* @brief Tests file read and write performance.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to test.
*/
void testFileIO(fs::FS &fs, const char * path) {
  File file = fs.open(path);
  static uint8_t buf[512];
  size_t len = 0;
  uint32_t start = millis();
  uint32_t end = start;

  if (file) {
    len = file.size();
    size_t flen = len;
    start = millis();
    while (len) {
      size_t toRead = len;
      if (toRead > 512) {
        toRead = 512;
      }
      file.read(buf, toRead);
      len -= toRead;
    }
    end = millis() - start;
    Serial.printf("%u bytes read for %u ms\n", flen, end);
    file.close();
  } else {
    Serial.println("Failed to open file for reading");
  }

  file = fs.open(path, FILE_WRITE);
  if (!file) {
    Serial.println("Failed to open file for writing");
    return;
  }

  size_t i;
  start = millis();
  for (i = 0; i < 2048; i++) {
    file.write(buf, 512);
  }
  end = millis() - start;
  Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end);
  file.close();
}

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
 
  // Initialize SPI and SD card
  SPIClass spi = SPIClass(HSPI);
  spi.begin(SCK, MISO, MOSI, CS);

  if (!SD.begin(CS, spi, 80000000)) {
    Serial.println("Card Mount Failed");
    return;
  }

  uint8_t cardType = SD.cardType();

  if (cardType == CARD_NONE) {
    Serial.println("No SD card attached");
    return;
  }

  Serial.print("SD Card Type: ");
  if (cardType == CARD_MMC) {
    Serial.println("MMC");
  } else if (cardType == CARD_SD) {
    Serial.println("SDSC");
  } else if (cardType == CARD_SDHC) {
    Serial.println("SDHC");
  } else {
    Serial.println("UNKNOWN");
  }

  uint64_t cardSize = SD.cardSize() / (1024 * 1024);
  Serial.printf("SD Card Size: %lluMB\n", cardSize);
  delay(2000);

  // Perform file operations
  deleteFile(SD, "/hello.txt");
  writeFile(SD, "/hello.txt", "Hello ");
  appendFile(SD, "/hello.txt", "World!\n");
  readFile(SD, "/hello.txt");
  testFileIO(SD, "/test.txt");
  Serial.printf("Total space: %lluMB\n", SD.totalBytes() / (1024 * 1024));
  Serial.printf("Used space: %lluMB\n", SD.usedBytes() / (1024 * 1024));
}

void loop() {
  // No operation in loop
}
arduino ino file download:

.zip   6-SD.zip (Size: 1.53 KB / Downloads: 311)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   6-SD.ino.merged.zip (Size: 221.25 KB / Downloads: 310)

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  [arduino code examples for F8]-05 Read free GPIO state
Posted by: admin - 04-20-2025, 07:12 AM - Forum: F8 - No Replies

Code:
/**
* @brief Example to read multiple digital inputs using ESP32
* @details This program reads the states of GPIO48, GPIO47, GPIO21, GPIO15, GPIO14, and GPIO40
*          and prints the results to the Serial Monitor.
*
* Made by KinCony IoT: https://www.kincony.com
*/

// Define the GPIO pins for digital inputs
#define INPUT1_PIN 48  // GPIO48
#define INPUT2_PIN 47  // GPIO47
#define INPUT3_PIN 21  // GPIO21
#define INPUT4_PIN 15  // GPIO15
#define INPUT5_PIN 14  // GPIO14
#define INPUT6_PIN 40  // GPIO40
#define INPUT7_PIN 0  // GPIO0

void setup() {
    // Initialize the serial communication for debugging
    Serial.begin(115200);
    Serial.println("ESP32 Digital Input Read Example");

    // Set the input pins as INPUT
    pinMode(INPUT1_PIN, INPUT);
    pinMode(INPUT2_PIN, INPUT);
    pinMode(INPUT3_PIN, INPUT);
    pinMode(INPUT4_PIN, INPUT);
    pinMode(INPUT5_PIN, INPUT);
    pinMode(INPUT6_PIN, INPUT);
    pinMode(INPUT7_PIN, INPUT);
}

void loop() {
    // Read the state of the digital inputs
    int state1 = digitalRead(INPUT1_PIN);
    int state2 = digitalRead(INPUT2_PIN);
    int state3 = digitalRead(INPUT3_PIN);
    int state4 = digitalRead(INPUT4_PIN);
    int state5 = digitalRead(INPUT5_PIN);
    int state6 = digitalRead(INPUT6_PIN);
    int state7 = digitalRead(INPUT7_PIN);

    // Print the states to the Serial Monitor
    Serial.print("GPIO48 State: ");
    Serial.println(state1);
    Serial.print("GPIO47 State: ");
    Serial.println(state2);
    Serial.print("GPIO21 State: ");
    Serial.println(state3);
    Serial.print("GPIO15 State: ");
    Serial.println(state4);
    Serial.print("GPIO14 State: ");
    Serial.println(state5);
    Serial.print("GPIO40 State: ");
    Serial.println(state6);
    Serial.print("GPIO0 State: ");
    Serial.println(state7);
    // Wait for 500 milliseconds before reading again
    delay(500);
}
arduino ino file download:

.zip   5-free-gpio-state.zip (Size: 780 bytes / Downloads: 292)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   5-free-gpio-state.ino.merged.zip (Size: 179.5 KB / Downloads: 293)

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