TF Card

begin()

Functionality:

Initializes the TF card.

Function Prototype:

begin(cspin)

Usage Example:

#include <M5Stack.h>

void setup() {
  SD.begin();
}

open()

Functionality:

Opens a specified file in the specified mode.

Function Prototype:

File open(const char *filepath, uint8_t mode);

Usage Example:

//Please create hello.txt in advance through a PC and copy it to the root directory of the TF card
#include <M5Stack.h>

void setup() {
  M5.begin();
  if (!SD.begin()) {
    M5.Lcd.println("Card failed, or not present");
    // Endlessly loop if the card cannot be initialized.
    while (1);
  }
  Serial.println("TF card initialized.");
  File f = SD.open("/hello.txt", FILE_READ);
  if (f) {
    M5.Lcd.print(f.read());
    f.close();
  } else {
    M5.Lcd.println("open error hello.txt");
  }
}

void loop() {
}