Arduino Quick Start
2. Devices & Examples
3. M5Unified
5. Extensions & Examples
Atom DTU
Hat
Basic/Fire/Gray/M5GO TF Card
Class Name: SD
begin()
Description:
Initializes the TF card.
Syntax:
begin(cspin);| Parameter | Description |
|---|---|
| cspin | The chip select pin for the TF card (optional, defaults to the SPI's SS pin) |
Example:
cpp
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#include <M5Stack.h> void setup() { SD.begin();}open()
Description:
Opens a specified file in the specified mode.
Syntax:
File open(const char *filepath, uint8_t mode);| Parameter | Description |
|---|---|
| filepath | File path |
| mode | Open mode |
Example:
cpp
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//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() {}