void SendLCD(UCHAR command, UCHAR data1)
{
/* Wait for the busy flag to clear */
LCD_busy();
/* Set RW low, RS high, CS low to write the instruction command */
LCD_rw = 0;
LCD_rs = 1;
LCD_cs = 0;
LCD_data = swap(command);
LCD_busy();
lcd_strobe_enable();
LCD_busy();
/* Set RW low, RS low to write the instruction data */
LCD_rw = 0;
LCD_rs = 0;
LCD_data = swap(data1);
LCD_busy();
lcd_strobe_enable();
LCD_busy();
}
/**
* Writes a raw instruction to the LCD.
* @param command The 4-bit instruction code.
* @param data The 8-bit paramater/data to the specified instruction.
*/
void lcd_write_command(unsigned char command, unsigned char data) {
/* Wait for the busy flag to clear */
lcd_wait_busy();
/* Set RW low, RS high to write the instruction command */
lcd_rw_low();
lcd_rs_high();
/* Instruction commands are a maximum of 4 bits long, so
* just mask off the rest. */
LCD_DATA_PORT = (command&0x0F);
__asm("nop;"); __asm("nop;"); __asm("nop;");
__asm("nop;"); __asm("nop;"); __asm("nop;");
lcd_strobe_enable();
__asm("nop;"); __asm("nop;"); __asm("nop;");
__asm("nop;"); __asm("nop;"); __asm("nop;");
/* Set RW low, RW low to write the instruction data */
lcd_rw_low();
lcd_rs_low();
LCD_DATA_PORT = data;
__asm("nop;"); __asm("nop;"); __asm("nop;");
__asm("nop;"); __asm("nop;"); __asm("nop;");
lcd_strobe_enable();
__asm("nop;"); __asm("nop;"); __asm("nop;");
__asm("nop;"); __asm("nop;"); __asm("nop;");
}
