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);
}
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 */
}