Mikroelektronika MIKROE-350 Fiche De Données

299

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub procedure Expander_Set_PullUpsPortB(dim ModuleAddress as
byte, dim Data_ as byte)

Nothing.

The function sets Port Expander's PortB pull up/down resistors.

Parameters : 

- 

ModuleAddress:

Port Expander hardware address, see schematic at the 

bottom of this page 

- 

Data_:

data for choosing pull up/down resistors configuration. Each bit 

corresponds to the appropriate pin of the PortB register. Set bit enables 
pull-up for corresponding pin. 

Port Expander must be initialized. See Expander_Init.

' Set Port Expander's PORTB pull-up resistors

Expander_Set_PullUpsPortB(0, 0xFF)

sub procedure Expander_Set_PullUpsPortAB(dim ModuleAddress as
byte, dim PullUps as word)

Nothing.

The function sets Port Expander's PortA and PortB pull up/down resistors.

Parameters : 

- 

ModuleAddress:

Port Expander hardware address, see schematic at the bot-

tom of this page 
- 

PullUps:

data for choosing pull up/down resistors configuration. PortA pull  

up/down resistors configuration is passed in

PullUps

's higher byte. PortB pull 

up/down resistors configuration is passed in 

PullUps

's lower byte. Each bit 

corresponds to the appropriate pin of the PortA/PortB register. Set bit enables 
pull-up for corresponding pin. 

Port Expander must be initialized. See Expander_Init.

' Set Port Expander's PORTA and PORTB pull-up resistors
Expander_Set_PullUpsPortAB(0, 0xFFFF)