Mikroelektronika MIKROE-724 データシート

418

mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

Expander_Init

sub procedure Expander_Init(dim ModuleAddress as byte)

Description Initializes Port Expander using SPI communication.

Port Expander module settings: 

- hardware addressing enabled 

- automatic address pointer incrementing disabled (byte mode) 

- BANK_0 register adressing 

- slew rate enabled 

Parameters - 

ModuleAddress

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

Nothing.

Global variables: 

- 

SPExpanderCS

: Chip Select line 

- 

SPExpanderRST

: Reset line 

- 

SPExpanderCS_Direction

: Direction of the Chip Select pin 

- 

SPExpanderRST_Direction

: Direction of the Reset pin 

must be defined before using this function. 

SPI module needs to be initialized. See SPIx_Init and SPIx_Init_Advanced routines. 

dim SPExpanderRST as sbit at LATF0_bit

    SPExpanderCS  as sbit at LATF1_bit

    SPExpanderRST_Direction as sbit at TRISF0_bit

    SPExpanderCS_Direction  as sbit at TRISF1_bit

    

...

SPI1_Init()       ‘ initialize SPI module

Expander_Init(0)  ‘ initialize Port Expander

None.