SPI.transfer()

Description

SPI transfer is based on a simultaneous send and receive: the received data is returned in receivedVal (or receivedVal16). In case of buffer transfers the received data is stored in the buffer in-place (the old data is replaced with the data received).

Syntax

receivedVal = SPI.transfer(val)

receivedVal16 = SPI.transfer16(val16)

SPI.transfer(buffer, size)

Parameters

• val: the byte to send out over the bus

• val16: the two bytes variable to send out over the bus

• buffer: the array of data to be transferred

Returns

The received data.