User manual

mikroPascal PRO for dsPIC30/33 and PIC24
MikroElektronika
540
SPI_Lcd8_Cong
Prototype
procedure SPI_Lcd8_Cong(DeviceAddress : byte);
Description Initializes the Lcd module via SPI interface.
Parameters - DeviceAddress: SPI expander hardware address, see schematic at the bottom of this page
Returns Nothing.
Requires 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 dened before using this function.
The SPI module needs to be initialized. See SPIx_Init and SPIx_Init_Advanced routines.
Example
// Port Expander module connections
var SPExpanderRST : sbit at LATF0_bit;
var SPExpanderCS : sbit at LATF1_bit;
var SPExpanderRST_Direction : sbit at TRISF0_bit;
var SPExpanderCS_Direction : sbit at TRISF1_bit;
// End Port Expander module connections
...
// If Port Expander Library uses SPI1 module
SPI1_Init(); // Initialize SPI module used
with PortExpander
SPI_Lcd8_Cong(0); // intialize Lcd in 8bit mode
via SPI
Notes None.
SPI_Lcd8_Out
Prototype
procedure SPI_Lcd8_Out(row, column: byte; var text: string);
Description Prints text on Lcd starting from specied position. Both string variables and literals can be passed as
a text.
Parameters - row: starting position row number
- column: starting position column number
- text: text to be written
Returns Nothing.
Requires Lcd needs to be initialized for SPI communication, see SPI_Lcd8_Cong routine.
Example
// Write text “Hello!” on Lcd starting from row 1, column 3:
SPI_Lcd8_Out(1, 3, ‘Hello!’);
Notes None.