pxt-calliope/docs/reference/serial/read-buffer.md

Serial Read Buffer

Read the buffered serial data as a buffer.

serial.readBuffer(64);

Returns

• a Buffer containing input from the serial port. The length of the buffer may be smaller than the requested length.

Remarks

If the desired number of characters are available, this will return a string with the expected size. Otherwise, the calling fiber sleeps until the desired number of characters have been read.

See Also

micro:bit DAL documentation