Mikroelektronika MIKROE-742 데이터 시트

307

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

procedure Expander_Write_PortB(ModuleAddress: byte; Data_: byte);

Nothing.

The function writes byte to Port Expander's PortB.

Parameters : 

- 

ModuleAddress

: Port Expander hardware address, see schematic at the bot

tom of this page 

- 

Data_

: data to be written 

Port Expander must be initialized. See Expander_Init.

Port Expander's PortB should be configured as output. See
Expander_Set_DirectionPortB and Expander_Set_DirectionPortAB routines.

// Write a byte to Port Expander's PORTB

...
Expander_Set_DirectionPortB(0,0x00);        // set expander's

portb to be output

...

Expander_Write_PortB(0, 0x55);