void lcdPutc(char c)
{
if(c == '\n')
{
cur_col = 0;
if(cur_row < LCD_ROWS-1)
cur_row++;
lcdGoto(cur_row, cur_col);
}
else
{
if(cur_col >= LCD_COLS)
{
cur_col = 0;
if(cur_row < LCD_ROWS-1)
cur_row++;
lcdGoto(cur_row, cur_col);
}
lcdData(c);
cur_col++;
}
}
void main ( void )
{
///// initialize keypad
WrPortI ( PDFR,NULL,0x00 ); // parallel Port D All I/O
WrPortI ( PDDCR,NULL,0xC0 ); // PD7..PD6 Open Collector
WrPortI ( PDDDR,NULL,0xC0 ); // PD7..PD6 Output
///// initialize lcd
WrPortI ( PADR,&PADRShadow,0x00 ); // Assure Outputs are Low
WrPortI ( SPCR,&SPCRShadow,0x84 ); // parallel Port A = Outputs
WrPortI ( PADR,&PADRShadow,PADRShadow&0x01 ); // Set Contrast at GND
delay ( 1500 ); // Wait 15 mSec (LCD to Stabilize)
lcdCmd4 ( 0x30 ); // Set to 8-Bit Interface
delay ( 410 ); // Wait 4.1 mSec
lcdCmd4 ( 0x30 ); // Set 8-Bit Interface
delay ( 10 ); // Wait 100 uSec
lcdCmd4 ( 0x30 ); // Set 8-Bit Interface
lcdCmd4 ( 0x20 ); // Set 8-Bit Interface
lcdCmd ( 0x28 ); // Set Dual Line Display
lcdCmd ( 0x06 ); // Disable Display Shift
lcdCmd ( 0x0C ); // Display On, Cursor Off
lcdCmd ( 0x01 ); // Clear Screen, Home Cursor, Backlight On
delay ( 164 ); // Wait 1.64 mSec
for (;;) {
WrPortI ( PDDR,NULL,0x40 ); // Scan Row 0
lcdGoto ( 0,0 ); // Cursor on column 0, row 0
keyCol (); // Scan for keypress
WrPortI ( PDDR,NULL,0x80 ); // Scan Row 1
lcdGoto ( 0,1 ); // Cursor on column 0, row 1
keyCol (); // Scan for keypress
}
}
