Mikroelektronika MIKROE-742 데이터 시트

361

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

function Soft_SPI_Read(sdata: byte): word;

Byte received via the SPI bus.

This routine performs 3 operations simultaneously. It provides clock for the Soft-
ware SPI bus, reads a byte and sends a byte.

Parameters : 

- 

sdata

: data to be sent. 

Soft SPI must be initialized before using this function. See Soft_SPI_Init routine.

var data_read : word;

data_send : byte;

...
// Read a byte and assign it to data_read variable
// (data_send byte will be sent via SPI during the Read opera-

tion)

data_read := Soft_SPI_Read(data_send);

procedure Soft_SPI_Write(sdata: byte);

Nothing.

This routine sends one byte via the Software SPI bus.

Parameters : 

- 

sdata

: data to be sent. 

Soft SPI must be initialized before using this function. See Soft_SPI_Init routine.

// Write a byte to the Soft SPI bus

Soft_SPI_Write(0xAA);