16 #include <pigpiod_if2.h> 23 #define HD44780_ADDRESS 0x3f 25 #define HD44780_CLEAR 0x01 26 #define HD44780_HOME 0x02 27 #define HD44780_ENTRY_MODE 0x04 28 #define HD44780_CURSOR_DIR 0x02 29 #define HD44780_CURSOR_SHIFT 0x10 30 #define HD44780_DISPLAY_CURSOR 0x08 31 #define HD44780_DISPLAY_ON 0x04 32 #define HD44780_DISPLAY_OFF 0x00 33 #define HD44780_CURSOR_ON 0x02 34 #define HD44780_CURSOR_OFF 0x00 35 #define HD44780_CURSOR_BLINK 0x01 36 #define HD44780_CURSOR_NOBLINK 0x00 38 #define HD44780_ENTIRE_DISPLAY 0x04 39 #define HD44780_CURSOR_ONOFF 0x02 40 #define HD44780_BLINK 0x01 41 #define HD44780_CURSOR 0x10 42 #define HD44780_1_LINE 0x00 43 #define DH44780_CURSOR_MOVE 0x00 44 #define DH44780_DISPLAY_SHIFT 0x08 45 #define DH44780_SHIFT_LEFT 0x00 46 #define DH44780_SHIFT_RIGHT 0x04 48 #define HD44780_FUNCTION 0x20 50 #define HD44789_8_BIT_MODE 0x10 51 #define HD44780_4_BIT_MODE 0x00 52 #define HD44780_TWO_LINES 0x08 53 #define HD44780_5x10_FONT 0x04 54 #define HD44780_5x8_FONT 0x00 55 #define HD44780_1_LINE 0x00 56 #define HD44780_2_LINE 0x08 57 #define HD44780_CURSOR_DEC 0x00 58 #define HD44780_CURSOR_INC 0x02 59 #define HD44780_DISPLAY_SHIFT 0x01 61 #define HD44780_CGRAM_AHDR 0x10 62 #define HD44780_HDRAM_AHDR 0x20 63 #define HD44780_BUSY_FLAG 0x40 65 #define HD44780_BL 0x08 66 #define HD44780_EN 0x04 67 #define HD44780_READ 0x02 68 #define HD44780_WRITE 0x00 69 #define HD44780_CMD_REG 0x00 70 #define HD44780_DATA_REG 0x01 72 #define HD44780_SET_DDRAM 0x80 73 #define HD44780_2ND_LINE 0x40 75 #define HD44780_INCREMENT true 76 #define HD44780_DECREMENT false 77 #define HD44780_ON true 78 #define HD44780_OFF false 80 #define HD44780_SUCCESS 0 81 #define HD44780_MAX_STRLEN 16 int hd44780GetC(char *)
Read a character from the display.
Definition: hd44780.c:478
int hd44780SetDDRamAddr(unsigned char)
Sets the DDRAM address.
Definition: hd44780.c:205
void hd44780SetDebug(bool)
switches debug mode on or off
Definition: hd44780.c:28
int hd44780Home(void)
Sets the DDRAM address to zero such that the next character is written to the top left position if th...
Definition: hd44780.c:92
int hd44780SecondLine(void)
Sets the DDRAM address to the beginning of the second line.
Definition: hd44780.c:195
void hd44780Close(void)
hd44770Close: closes the I2C connection to the pcf8574 and disconnects from the pigpio library ...
Definition: hd44780.c:611
int hd44780PutS(char *)
Writes a zero terminated character string to the display Not more than 16 characters are written it n...
Definition: hd44780.c:331
int hd44780ReadBusy(bool *, unsigned char *)
Reads the busy flag and the DDRAM address.
Definition: hd44780.c:451
int hd44780PutC(char)
Write a character to the display.
Definition: hd44780.c:285
int hd44780EntryMode(bool, bool)
Defines if the address counter counts up or down and sets shifting the whole display on or off...
Definition: hd44780.c:173
int hd44780Cursor(bool, bool)
Sets the DDRAM address to zero such that the next character is written to the top left position if th...
Definition: hd44780.c:117
int hd44780BackLight(bool)
switches the display back light on or off
Definition: hd44780.c:39
int hd44780Open(void)
hd44770Open: initializes the pigpio library opens the I2C connection to the pcf8574 which is on the I...
Definition: hd44780.c:502
int hd44780Clear(void)
Clears the display.
Definition: hd44780.c:224