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  A8s v2 inputs not working when using PoE
Posted by: halt77 - 02-22-2025, 10:43 AM - Forum: KC868-A8S - Replies (5)

Dear Kincony team, 

It seems to be a problem with the A8S v2 board.

I've tested the A8S v2 with the PoE board and none of the inputs work (using either the KCS or esphome firmware).

If you power the board using the 12v input, everything works as expected (the inputs work), but as soon as you power the board with the Kinkony PoE board, all inputs go down (and they stop showing the expected status).

You can easily diagnose this providing power to the board only with PoE, as you will see the inputs do not work (even using KCS firmware).

I've about 20 A8S v2 boards. How can I correct this so inputs work when using PoE power?

Regards.

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  M16v2
Posted by: kr_user - 02-22-2025, 10:11 AM - Forum: KC868-M16 / M1 / MB / M30 - Replies (1)

Does the m16v2 support bidirectional currents ? => Show negative current if clamp is turned the other way?

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  "KCS" v3.7.2 firmware BIN file download
Posted by: admin - 02-22-2025, 07:58 AM - Forum: "KCS" v3 firmware - No Replies

v3.7.2 improvement:
1. fixed dimmer issue in Tuya app.



Attached Files
.zip   KCS_A6V3_V3.7.2.zip (Size: 1 MB / Downloads: 491)
.zip   KCS_A16V3_V3.7.2.zip (Size: 1.08 MB / Downloads: 534)
.zip   KCS_A32PRO_V3.7.2.zip (Size: 1.04 MB / Downloads: 428)
.zip   KCS_AG8_V3.7.2.zip (Size: 1.03 MB / Downloads: 455)
.zip   KCS_B16M_V3.7.2.zip (Size: 1.07 MB / Downloads: 480)
.zip   KCS_F16_V3.7.2.zip (Size: 1.07 MB / Downloads: 451)
.zip   KCS_F24_V3.7.2.zip (Size: 1.07 MB / Downloads: 432)
.zip   KCS_T16M_V3.7.2.zip (Size: 1.02 MB / Downloads: 464)
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  Is there a A8v3 coming with ESP32-S3? KC868-A8v3
Posted by: dbl0 - 02-22-2025, 03:28 AM - Forum: KC868-A series and Uair Smart Controller - Replies (3)

I saw the A6v3 land, but I need 8 outputs!

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  [arduino code examples for B16]-11 digital INPUT trigger OUTPUT directly
Posted by: admin - 02-22-2025, 02:12 AM - Forum: B16 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* This program reads 16 input states from a PCF8575 I/O expander and
* controls a corresponding 16-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: 0x24
* - Relay I2C Address: 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
#define INPUT_I2C_ADDRESS 0x24   // I2C address for the input PCF8575 module
#define RELAY_I2C_ADDRESS 0x22   // I2C address for the relay PCF8575 module

PCF8575 pcf8575_IN(INPUT_I2C_ADDRESS);    // Create an object for the input PCF8575
PCF8575 pcf8575_RL(RELAY_I2C_ADDRESS);    // Create an object for the relay PCF8575

void setup() {
  // Initialize I2C communication
  Wire.begin(SDA, SCL);
 
  // Initialize serial communication
  Serial.begin(115200);
 
  // Initialize input and relay modules
  pcf8575_IN.begin();
  pcf8575_RL.begin();
 
  // Turn off all relays at the start
  for (int i = 0; i < 16; i++) {
    pcf8575_RL.write(i, LOW);  // Assuming relays are LOW when OFF, setting all relays to OFF initially
  }
 
  Serial.println("System started: Input state controlling 16 relays");
}

void loop() {
  uint16_t inputState = 0;

  // Read the state of 16 inputs
  for (int i = 0; i < 16; i++) {
    if (pcf8575_IN.read(i)) {
      inputState |= (1 << i);  // If input is HIGH, set the corresponding bit
    } else {
      inputState &= ~(1 << i); // Otherwise, clear the corresponding bit
    }
  }
 
  // Control the relays based on the input state
  for (int i = 0; i < 16; i++) {
    if (inputState & (1 << i)) {
      pcf8575_RL.write(i, HIGH);  // If input is HIGH, turn the relay OFF
    } else {
      pcf8575_RL.write(i, LOW);   // If input is LOW, turn the relay ON
    }
  }

  // Delay for 500 milliseconds
  delay(500);
}
arduino ino file download: 

.zip   11-input-trigger-output.zip (Size: 1.02 KB / Downloads: 445)
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: 189.4 KB / Downloads: 484)

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  [arduino code examples for B16]-10 Print TEXT on SSD1306 OLED displayer
Posted by: admin - 02-22-2025, 02:10 AM - Forum: B16 - 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 = IO39, SDA = IO38)
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: 1.12 KB / Downloads: 455)
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: 446)

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  [arduino code examples for B16]-09 how to communication with Tuya WiFi module
Posted by: admin - 02-22-2025, 02:08 AM - Forum: B16 - 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 16
#define RXD_PIN 17

// 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: 443)
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: 184.93 KB / Downloads: 429)

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  [arduino code examples for B16]-08 Ethernet W5500 chip work with TCP Server mode
Posted by: admin - 02-22-2025, 02:07 AM - Forum: B16 - 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: GPIO1
* - MOSI: GPIO2
* - MISO: GPIO41
* - CS: GPIO42
* - RST: GPIO44
* - INT: GPIO43
*
* 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.ino.merged.zip (Size: 188.93 KB / Downloads: 498)
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: 498)



Attached Files
.zip   8-Ethernet-W5500.zip (Size: 1.23 KB / Downloads: 448)
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  [arduino code examples for B16]-07 how to DS3231 RTC clock
Posted by: admin - 02-22-2025, 02:05 AM - Forum: B16 - 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
*    Set date and time command example: D2024-09-19T11:50:22
*    print current date and time command: current time
*
*
* 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: 1.56 KB / Downloads: 447)
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: 470)

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  [arduino code examples for B16]-06 How to use SD Card
Posted by: admin - 02-22-2025, 02:04 AM - Forum: B16 - 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: 460)
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: 460)

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