pxt-calliope/docs/reference/serial/write-line.md

Serial Write Line

Write a string to the serial port and start a new line of text by writing \r\n.

serial.writeLine("");

Parameters

• text is the string to write to the serial port

Examples

Simple serial

Write the word BOFFO to the serial port repeatedly.

basic.forever(() => {
    serial.writeLine("BOFFO");
    basic.pause(5000);
});

Streaming data

Check the compass heading and show the direction on the screen. Also, send both the direction and degree heading to the serial port.

let degrees = 0
let direction = ""
basic.forever(() => {
    degrees = input.compassHeading()
    if (degrees < 45) {
        basic.showArrow(ArrowNames.North)
        direction = "North"
    } else if (degrees < 135) {
        basic.showArrow(ArrowNames.East)
        direction = "East"
    } else if (degrees < 225) {
        basic.showArrow(ArrowNames.South)
        direction = "South"
    } else if (degrees < 315) {
        basic.showArrow(ArrowNames.West)
        direction = "West"
    } else {
        basic.showArrow(ArrowNames.North)
        direction = "North"
    }
    serial.writeLine(direction + " @ " + degrees + " degrees")
    basic.pause(500)
})

See also

serial, serial write number, serial write string, serial write value