Mikroelektronika MIKROE-724 データシート

424

mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

Expander_Set_DirectionPortB

Expander_Set_DirectionPortAB

Expander_Set_PullUpsPortA

sub procedure Expander_Set_DirectionPortB(dim ModuleAddress, Data as byte)

Description The function sets Port Expander’s PortB direction.
Parameters - 

ModuleAddress

: Port Expander hardware address, see schematic at the bottom of this page 

- 

Data

: data to be written to the PortB direction register. Each bit corresponds to the appropriate pin of 

the PortB register. Set bit designates corresponding pin as input. Cleared bit designates corresponding 

pin as output. 

Nothing.

Port Expander must be initialized. See Expander_Init.

Expander_Set_DirectionPortB(0,$FF)

None.

sub procedure Expander_Set_DirectionPortAB(dim ModuleAddress, Direction as 

word)

Description The function sets Port Expander’s PortA and PortB direction.
Parameters - 

ModuleAddress

: Port Expander hardware address, see schematic at the bottom of this page 

- 

Direction

: data to be written to direction registers. Data to be written to the PortA direction register 

are passed in 

Direction

’s higher byte. Data to be written to the PortB direction register are passed 

in 

Direction

’s lower byte. Each bit corresponds to the appropriate pin of the PortA/PortB register. 

Set bit designates corresponding pin as input. Cleared bit designates corresponding pin as output. 

Nothing.

Port Expander must be initialized. See Expander_Init.

Expander_Set_DirectionPortAB(0,$00FF)

None.

sub procedure Expander_Set_PullUpsPortA(dim ModuleAddress, Data as byte)

Description The function sets Port Expander’s PortA 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 PortA register. Set bit enables pull-up for corresponding pin. 

Nothing.

Port Expander must be initialized. See Expander_Init.

Expander_Set_PullUpsPortA(0, $FF)

None.