write Number

Write a number to the serial port.

serial.writeNumber(0)

A number value is written to the serial port as characters in a string representation. The number 876, for example:

serial.writeNumber(876)

The receiving serial port will see this number as the 3 characters:

Parameters

value is the number to write to the serial port

Simulator data log

When a number is written to the serial port, it’s sent immediately over the serial connection. However, when you code with ||serial:write number|| in the Editor, the simulator’s data log may not display the output data right away. The characters that represent the number may get queued in the data log buffer and won’t display until:

a ‘newline’ line character is received (\n)

– or –

log data buffer limit is reached (currently set at 255 characters).

If you want to see the string displayed immediately, use a ||serial:write line|| with an empty string right after the ||serial:write number||.

Examples

One, Two, Three

This program repeatedly writes a 3-digit number as a line to the serial port.

basic.forever(function() {
    serial.writeNumber(123)
    serial.writeLine("")
    basic.pause(5000)
});

Plot bar graph does serial

If you use the led.plotBarGraph function, it writes the number being plotted to the serial port too.

basic.forever(function() {
    led.plotBarGraph(input.lightLevel(), 255)
    basic.pause(10000)
})