diff options
Diffstat (limited to 'Projects/SerialToLCD/Lib')
| -rw-r--r-- | Projects/SerialToLCD/Lib/HD44780.c | 10 | ||||
| -rw-r--r-- | Projects/SerialToLCD/Lib/HD44780.h | 14 |
2 files changed, 12 insertions, 12 deletions
diff --git a/Projects/SerialToLCD/Lib/HD44780.c b/Projects/SerialToLCD/Lib/HD44780.c index d67dc6d40..7bf989d2c 100644 --- a/Projects/SerialToLCD/Lib/HD44780.c +++ b/Projects/SerialToLCD/Lib/HD44780.c @@ -83,11 +83,11 @@ static void HD44780_WriteByte(const uint8_t c) static void HD44780_PowerUp4Bit(void) { - /* Wait for more than 40 ms after VCC rises to 2.7 V */ + /* Wait for more than 40 ms after VCC rises to 2.7 V */ _delay_ms(40); HD44780_WriteNibble(0x03); // FN_SET 8-bit - /* Wait for more than 4.1 ms */ + /* Wait for more than 4.1 ms */ _delay_ms(5); HD44780_WriteNibble(0x03); // FN_SET 8-bit @@ -95,12 +95,12 @@ static void HD44780_PowerUp4Bit(void) _delay_us(100); HD44780_WriteNibble(0x03); // FN_SET 8-bit - /* From now on we must allow 40us for each command */ + /* From now on we must allow 40us for each command */ _delay_us(50); HD44780_WriteNibble(0x02); // FN_SET 4-bit - /* The LCD is now in 4-bit mode so we can continue - using the 4-bit API */ + /* The LCD is now in 4-bit mode so we can continue + using the 4-bit API */ _delay_us(50); } diff --git a/Projects/SerialToLCD/Lib/HD44780.h b/Projects/SerialToLCD/Lib/HD44780.h index a800ae712..680e69bcf 100644 --- a/Projects/SerialToLCD/Lib/HD44780.h +++ b/Projects/SerialToLCD/Lib/HD44780.h @@ -43,16 +43,16 @@ #include <avr/power.h> /* Macros: */ - #define RS (0x10) // PD4 - #define ENABLE (0x80) // PD7 + #define RS (1 << 4) /* PD4 */ + #define ENABLE (1 << 7) /* PD7 */ - #define HI4_MASK (0xF0) - #define LO4_MASK (0x0F) // PD0..3 + #define HI4_MASK 0xF0 + #define LO4_MASK 0x0F /* PD0-PD3 */ - #define ALL_BITS (RS|ENABLE|LO4_MASK) + #define ALL_BITS (RS | ENABLE | LO4_MASK) - #define HI4( c ) (( c & HI4_MASK ) >> 4 ) - #define LO4( c ) (( c & LO4_MASK ) >> 0 ) + #define HI4(c) ((c & HI4_MASK) >> 4) + #define LO4(c) ((c & LO4_MASK) >> 0) #define CMD_DISPLAY_ON 0x0C |