static void lcd_Write (
uint8_t reg, /* b0:command(0)/data(1), b2-b1:E1(2)/E2(1)/both(0)(don't care on single controller),
b3:write high nibble only(don't care on 8-bit I/F) */
uint8_t data /* Byte to be written */
)
{
if (reg & 1) /* Select register */
RS_HIGH();
else
RS_LOW();
IF_DLY60nS();
#if IF_BUS == 4
if (!(reg & 8)) { // write both nibbles
OUT_DATA(data);
#if LCD_IF_DUAL
if (!(reg & 2)) E1_HIGH();
if (!(reg & 4)) E2_HIGH();
IF_DLY450nS();
E1_LOW();
E2_LOW();
#else
E1_HIGH();
IF_DLY450nS();
E1_LOW();
#endif
data <<= 4;
}
#endif
OUT_DATA(data);
#if LCD_IF_DUAL
if (!(reg & 2)) E1_HIGH();
if (!(reg & 4)) E2_HIGH();
IF_DLY450nS();
E1_LOW();
E2_LOW();
#else
E1_HIGH();
IF_DLY450nS();
E1_LOW();
#endif
_delay_us(LCD_DT2); /* Always use timer */
OUT_DATA(0xF0);
}
void lcd_init (void)
{
uint8_t d;
E1_HIGH();
DELAY_US(40000);
E1_LOW();
// IF_INIT();
// DELAY_US(40000);
lcd_write(8, 0x30);
DELAY_US(4100);
lcd_write(8, 0x30);
DELAY_US(100);
lcd_write(8, 0x30);
d = (IF_BUS == 4 ? 0x20 : 0x30) | LCD_IF_2ROW;
lcd_write(8, d);
#if IF_BUS == 4
lcd_write(0, d);
#endif
lcd_write(0, 0x08);
lcd_write(0, 0x01);
DELAY_US(LCD_DT1);
lcd_write(0, 0x06);
lcd_write(0, 0x0C);
Row = Column = 0;
#if _USE_CURSOR
Csr = 0;
#endif
}
static
void lcd_write (
uint8_t reg, /* b0:command(0)/data(1), b2..1:E1(2)/E2(1)/both(0)(don't care on single controller), b3:write high nibble only(don't care on 8-bit bus) */
uint8_t dat /* Byte to be written */
)
{
if (reg & 1) /* Select register */
RS_HIGH();
else
RS_LOW();
IF_DLY60();
#if IF_BUS == 4
if (!(reg & 8)) {
OUT_DATA(dat);
#if LCD_IF_DUAL
if (!(reg & 2)) E1_HIGH();
if (!(reg & 4)) E2_HIGH();
IF_DLY450();
E1_LOW();
E2_LOW();
#else
E1_HIGH();
IF_DLY450();
E1_LOW();
#endif
IF_DLY450();
dat <<= 4;
}
#endif
OUT_DATA(dat);
#if LCD_IF_DUAL
if (!(reg & 2)) E1_HIGH();
if (!(reg & 4)) E2_HIGH();
IF_DLY450();
E1_LOW();
E2_LOW();
#else
E1_HIGH();
IF_DLY450();
E1_LOW();
#endif
DELAY_US(LCD_DT2); /* Always use timer */
}
