To use this package, go to https://makecode.microbit.org, click Extensions and search for filesystem.
DEPRECATED - This package is no longer maintained or supported.
The package allows to read and write files to the @boardname@ flash.
The entire file system content is ERASED when a new .hex file is download onto the @boardname@.
- append text and a new line character
files.appendLine("data.txt", "Hello");
- append text to the file
files.appendString("data.txt", "Hello");
- append a number (as text) to the file
files.appendNumber("data.txt", 42);
- send the content of a file to serial
files.readToSerial("data.txt");
The package allows to save and load number settings based on the file system
- save setting value
files.settingsSaveNumber("calibrated", 1)
- read setting value
let calibrated = files.settingsReadNumber("calibrated");
The File class allows to keep a file instance open, manipulate the pointer position and read from the file.
- open, flush or close the file
let f = files.open("data.txt");
f.flush();
f.close();
- write strings or buffers
let f = files.open("data.txt");
f.writeString("yay");
- read data
let f = files.open("data.txt");
let buf = f.readBuffer(64);
let c = f.read();
- set the cursor position
let f = files.open("data.txt");
f.setPosition(42);
let pos = f.position();
The following program allows to collect accelerometer data and save it in a data.csv file.
When the user presses button A, the @boardname@ pauses for 3 seconds, then starts collecting 720 acceleration samples.
Each sample is written to the file in a format that can be important by spreadsheet programs (CSV).
let file = "data.csv";
input.onButtonPressed(Button.A, () => {
basic.pause(3000);
files.remove(file);
files.appendLine(file, "Time\tAcceleration");
for (let i = 0; i < 100; ++i) {
let t = input.runningTime();
let ay = input.acceleration(Dimension.Y);
files.appendLine(file, t + "\t" + ay);
control.waitMicros(20);
}
});
input.onButtonPressed(Button.B, () => {
files.readToSerial(file);
basic.showString(":)")
})
- for PXT/ microbit
- for PXT/ calliope
MIT
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.
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