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HTEB1
User manual
Issue 0.2 Page 45 07/2002
SET_LCD_RW;
LCD_DATA_CTRL = LCD_IN;
SET_LCD_EN;
status = LCD_DATA_PORT;
CLEAR_LCD_EN;
LCD_DATA_CTRL = LCD_OUT;
return status;
}
void LCDInit(void) // inits the LCD
{
u16 cnt=0;
CLEAR_LCD_RS;
CLEAR_LCD_RW;
CLEAR_LCD_EN;
PCR7 |= 0x30; // Set RS+RW = Output
PCR2 |= 0x01; // Set EN = Output
LCD_DATA_CTRL = LCD_OUT; // Set DDR to Output
// required 3 times pls. ref. data sheet
LCDWriteCmd(0x38); // 8Bit-IF, 2 Lines, 5x7 character font
while(--cnt);
LCDWriteCmd(0x38); // 8Bit-IF, 2 Lines, 5x7 character font
while(--cnt);
LCDWriteCmd(0x38); // 8Bit-IF, 2 Lines, 5x7 character font
while(--cnt);
LCDWriteCmd(0x38); // 8Bit-IF, 2 Lines, 5x7 character font
while(--cnt);
LCDWriteCmd(0x0c); // DisplayOn, CursorOff, BlinkingOff
LCDReadStatus();
LCDWriteCmd(0x06); // Enter Mode, AutoIncrement
LCDReadStatus();
LCDWriteCmd(0x14); // MoveCursor right
LCDReadStatus();
LCDWriteCmd(0x80); // Set DD RAM Address = 0x00
LCDReadStatus();
}
// writesomedata from 1st position in #line (0/1)
void LCDWriteLine(u8 line, u8 *data)
{
LCDWriteCmd(0x80 + line*0x40); // select line
while (*data)
{
LCDWriteData(*data);
data++;
}
}
#define cKEYCLK 0x40 // P16 (IRQ_2)
#define cKEYDATA 0x80 // P17
#define cKeyBufSize 16 // input keycode buffsize
u16 KeyCodeBuf[cKeyBufSize]; // input code buffer
u8 keyWriteIndex,keyReadIndex; // buffer write/read index
u16 outval;
u8 outact;
// check for odd parity and stopbit
u8 OddParStopCheck(u16 data)
{
u8 pcnt=0;
u16 mask=0x0080;
if (!(data & 0x0200)) return FALSE; // check for stopbit
while (mask)
{