User manual

mikroC PRO for dsPIC
MikroElektronika
443
Expander_Init_Advanced
Prototype
void Expander_Init_Advanced(char *rstPort, char rstPin, char haen);
Description Initializes Port Expander using SPI communication.
Parameters - rstPort: Port Expander’s reset port
- rstPin: Port Expander’s reset pin
- haen: Port Expander’s hardware address
Returns Nothing.
Requires - SPExpanderCS: Chip Select line
- SPExpanderRST: Reset line
- SPExpanderCS_Direction: Direction of the Chip Select pin
- SPExpanderRST_Direction: Direction of the Reset pin
must be dened before using this function.
SPI module needs to be initialized. See SPIx_Init and SPIx_Init_Advanced routines.
Example
// Port Expander module connections
sbit SPExpanderRST at RF0_bit;
sbit SPExpanderCS at RF1_bit;
sbit SPExpanderRST_Direction at TRISF0_bit;
sbit SPExpanderCS_Direction at TRISF1_bit;
// End Port Expander module connections
...
// If Port Expander Library uses SPI module
SPI1_Init(); // Initialize SPI1 module used with PortExpander
Expander_Init_Advanced(&PORTB, 0, 0); // Initialize Port Expander
Notes None.