SPIClass Class

Syntax

class SPIClass;

SPI class interface is used to control SPI port to conduct data communication between the processor and multitudes of peripheral devices.

SPI.h

Method	Description
begin	Initializes and sets up the SPI mode. It also initializes the status of pins.
end	Disables the SPI data transmission.
setBitOrder	Sets up the order of data transmission, which can be MSBFIRST (MSB first) or LSBFIRST (LSB first).
setClockDivider	Sets up clock divider to control the speed of data transmission.
setDataMode	Sets up the SPI data transmission mode.
transfer	Sends a byte of data to slave and receives a byte of data from the slave simultaneously.
write	Writes block memory to slave. The memory size needs to be 2^X in exponential form.