/*
* Write data to Data pins. Written data might be 4-bit or 8-bit
* according to data8Bit variable
*/
void lcdWriteData(uint8_t ui8Data) {
if (data8Bit) {
GPIOPinWrite(LCD_GPIO_DATA_BASE, DATA_PINS, ui8Data);
lcdEnable();
}
else {
GPIOPinWrite(LCD_GPIO_DATA_BASE, DATA_PINS, ui8Data & 0xF0); //send the rest 4-bits
lcdEnable();
GPIOPinWrite(LCD_GPIO_DATA_BASE, DATA_PINS, (ui8Data & 0x0F) << 4); //send first 4-bits
lcdEnable();
}
}
/*** Function : lcdReset
** Parameters : None
** Return : None
** Description : It will Reset the LCD for 4-bit Mode
**/
void lcdReset(void)
{
LCD_D7_PORT &= ~LCD_D7_BIT;
LCD_D6_PORT &= ~LCD_D6_BIT;
LCD_D5_PORT |= LCD_D5_BIT;
LCD_D4_PORT |= LCD_D4_BIT;
lcdEnable();
__delay_ms__(10);
lcdEnable();
__delay_ms__(10);
lcdEnable();
__delay_ms__(10);
LCD_D7_PORT &= ~LCD_D7_BIT;
LCD_D6_PORT &= ~LCD_D6_BIT;
LCD_D5_PORT |= LCD_D5_BIT;
LCD_D4_PORT &= ~LCD_D4_BIT;
lcdEnable();
__delay_ms__(10);
}
/*** Function : lcdwrite4Bits
** Parameters : None
** Return : unsigned char
** Description : It will write 4-bit to LCD PORT
**/
void lcdwrite4Bits(unsigned char val)
{
if(val & 0x08)
LCD_D7_PORT |= LCD_D7_BIT;
else
LCD_D7_PORT &= ~LCD_D7_BIT;
if(val & 0x04)
LCD_D6_PORT |= LCD_D6_BIT;
else
LCD_D6_PORT &= ~LCD_D6_BIT;
if(val & 0x02)
LCD_D5_PORT |= LCD_D5_BIT;
else
LCD_D5_PORT &= ~LCD_D5_BIT;
if(val & 0x01)
LCD_D4_PORT |= LCD_D4_BIT;
else
LCD_D4_PORT &= ~LCD_D4_BIT;
lcdEnable();
}
/*** Function : lcdwrite8Bits
** Parameters : None
** Return : unsigned char
** Description : It will write 8-bit to LCD PORT
**/
void lcdwrite8Bits(unsigned char lByte)
{
if(lByte & 0x80)
LCD_D7_PORT |= LCD_D7_BIT;
else
LCD_D7_PORT &= ~LCD_D7_BIT;
if(lByte & 0x40)
LCD_D6_PORT |= LCD_D6_BIT;
else
LCD_D6_PORT &= ~LCD_D6_BIT;
if(lByte & 0x20)
LCD_D5_PORT |= LCD_D5_BIT;
else
LCD_D5_PORT &= ~LCD_D5_BIT;
if(lByte & 0x10)
LCD_D4_PORT |= LCD_D4_BIT;
else
LCD_D4_PORT &= ~LCD_D4_BIT;
#if LCD_MODE == 1
if(val & 0x08)
LCD_D3_PORT |= LCD_D3_BIT;
else
LCD_D3_PORT &= ~LCD_D3_BIT;
if(val & 0x04)
LCD_D2_PORT |= LCD_D2_BIT;
else
LCD_D2_PORT &= ~LCD_D2_BIT;
if(val & 0x02)
LCD_D1_PORT |= LCD_D1_BIT;
else
LCD_D1_PORT &= ~LCD_D1_BIT;
if(val & 0x01)
LCD_D0_PORT |= LCD_D0_BIT;
else
LCD_D0_PORT &= ~LCD_D0_BIT;
#endif
lcdEnable();
}
