/******************************************************************************
* This function writes a string to the display
*
* Interface assumptions:
* The pstr must be zero-terminated.
*
* Return value:
* None
*
*
******************************************************************************/
void LCD_WriteString
(
uint8_t line, /* IN: Line in display */
uint8_t *pstr /* Pointer to text string */
)
{
uint8_t len;
uint8_t x;
uint8_t *error = "Wrong line 1 & 2";
if( line == 2 ) {
LCDLine(LineTwo);
}
else if ( line == 1 ) {
LCDLine(LineOne);
}
else {
LCD_ClearDisplay();
LCDLine(LineOne);
pstr = error;
}
len = GetStrlen(pstr);
for ( x = 0; x < len; x++ ) {
LCD_WriteChar( pstr[x] );
}
/* Clear the rest of the line */
for ( ; x < gMAX_LCD_CHARS_c; x++ ) {
LCD_WriteChar( ' ' );
}
}
void LCDRectangle (int x1, int y1, int x2, int y2) { //draw a rectangle
LCDLine (x1, y1, x1, y2);
LCDLine (x1, y1, x2, y1);
LCDLine (x2, y1, x2, y2);
LCDLine (x1, y2, x2, y2);
return;
}
void LCDSolidRectangle (int x1, int y1, int x2, int y2) { //draw a solid rectangle
int i = 0;
if (x2>x1)
for (i=x1; i<=x2;i++)
LCDLine (i, y1, i, y2);
else for (i=x2; i<=x1;i++)
LCDLine (i, y1, i, y2);
return;
}
void LCD_Init
(
void
)
{
LCDWaitLong( Wait5mSec );
/* This function setup Bits 6-7 as outputs (EN & RS) (PTEDD) */
Setup_EN_RS;
/* Setup the XX Port (4-7 data bits, 3 R/W ) (PTGDD)
data is output (default), r/w is output */
SetupDataBit;
/* Initialize data port */
InitDataPort;
/* Setup the R/W for writing (PTGD) */
Setup_R_W_Write;
/* Initialize EN and RS to 0 */
Init_EN_RS;
/* Send the reset sequence */
LCD_Write4bits( 0x30 );
LCDToggleEN;
LCDWaitLong( Wait5mSec );
LCD_Write4bits( 0x30 );
LCDToggleEN;
LCDWaitShort( Wait30uSec );
LCD_Write4bits( 0x30 );
LCDToggleEN;
LCDWaitShort( Wait30uSec );
LCD_Write4bits( 0x20 );
LCDToggleEN;
LCDWaitShort( Wait15uSec );
/* Function, 4 bit data length */
LCD_Write4bits( 0x20 );
LCDToggleEN;
LCDWaitShort( Wait15uSec );
/* 2 lines, 5x7 dot format */
LCD_Write4bits( 0x80 );
LCDToggleEN;
LCDWaitShort( Wait60uSec );
/* Entry Mode Inc, No Shift */
LCD_Write4bits( 0x00 );
LCDToggleEN;
LCDWaitShort( Wait15uSec );
LCD_Write4bits( 0x60 );
LCDToggleEN;
LCDWaitShort( Wait75uSec );
/* Display ON/OFF Control - Display On, Cursor Off, Blink Off */
LCD_Write4bits( 0x00 );
LCDToggleEN;
LCDWaitShort( Wait15uSec );
LCD_Write4bits( 0xC0 );
LCDToggleEN;
LCDWaitShort( Wait75uSec );
/* Display Clear */
LCD_ClearDisplay();
LCDLine(LineOne);
}
void LCDTriangle (int x1, int y1, int x2, int y2, int x3, int y3) { //draw a triangle
LCDLine (x1, y1, x2, y2);
LCDLine (x2, y2, x3, y3);
LCDLine (x3, y3, x1, y1);
return;
}
