You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.2 KiB
135 lines
3.2 KiB
#pragma once
|
|
|
|
// HD44780 LCD display driver - 4-bit mode
|
|
//
|
|
// LCD pins are configured using a file lcd_config.h, which you
|
|
// have to add next to your main.c file.
|
|
//
|
|
// Content can be something like this:
|
|
//
|
|
//
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
#define LCD_RS D2
|
|
#define LCD_RW D3
|
|
#define LCD_E D4
|
|
#define LCD_D4 D5
|
|
#define LCD_D5 D6
|
|
#define LCD_D6 D7
|
|
#define LCD_D7 D8
|
|
|
|
|
|
// --- Commands ---
|
|
|
|
// Clear screen (reset)
|
|
#define LCD_CLEAR 0b00000001
|
|
// Move cursor to (0,0), unshift...
|
|
#define LCD_HOME 0b00000010
|
|
|
|
// Set mode: Increment + NoShift
|
|
#define LCD_MODE_INC 0b00000110
|
|
// Set mode: Increment + Shift
|
|
#define LCD_MODE_INC_SHIFT 0b00000111
|
|
|
|
// Set mode: Decrement + NoShift
|
|
#define LCD_MODE_DEC 0b00000100
|
|
// Set mode: Decrement + Shift
|
|
#define LCD_MODE_DEC_SHIFT 0b00000101
|
|
|
|
// Disable display (data remains untouched)
|
|
#define LCD_DISABLE 0b00001000
|
|
|
|
// Disable cursor
|
|
#define LCD_CURSOR_NONE 0b00001100
|
|
// Set cursor to still underscore
|
|
#define LCD_CURSOR_BAR 0b00001110
|
|
// Set cursor to blinking block
|
|
#define LCD_CURSOR_BLINK 0b00001101
|
|
// Set cursor to both of the above at once
|
|
#define LCD_CURSOR_BOTH (LCD_CURSOR_BAR | LCD_CURSOR_BLINK)
|
|
|
|
// Move cursor
|
|
#define LCD_MOVE_LEFT 0b00010000
|
|
#define LCD_MOVE_RIGHT 0b00010100
|
|
|
|
// Shift display
|
|
#define LCD_SHIFT_LEFT 0b00011000
|
|
#define LCD_SHIFT_RIGHT 0b00011100
|
|
|
|
// Set iface to 5x7 font, 1-line
|
|
#define LCD_IFACE_4BIT_1LINE 0b00100000
|
|
#define LCD_IFACE_8BIT_1LINE 0b00110000
|
|
// Set iface to 5x7 font, 2-line
|
|
#define LCD_IFACE_4BIT_2LINE 0b00101000
|
|
#define LCD_IFACE_8BIT_2LINE 0b00111000
|
|
|
|
extern const uint8_t LCD_ROW_ADDR[4];
|
|
|
|
/** Initialize the display */
|
|
void lcd_init();
|
|
|
|
/** Write an instruction byte */
|
|
void lcd_command(uint8_t bb);
|
|
|
|
/** Write a data byte */
|
|
void lcd_write(uint8_t bb);
|
|
|
|
/** Read BF & Address */
|
|
uint8_t lcd_read_bf_addr();
|
|
|
|
/** Read CGRAM or DDRAM */
|
|
uint8_t lcd_read();
|
|
|
|
/** Send a string to LCD */
|
|
void lcd_puts(char* str_p);
|
|
|
|
/** Send a string to LCD from program memory */
|
|
void lcd_puts_P(const char* str_p);
|
|
|
|
/** Sedn a char to LCD */
|
|
void lcd_putc(const char c);
|
|
|
|
/** Show string at X, Y */
|
|
#define lcd_puts_xy(x, y, str_p) do { lcd_xy((x), (y)); lcd_puts((str_p)); } while(0)
|
|
|
|
/** Show string at X, Y */
|
|
#define lcd_puts_xy_P(x, y, str_p) do { lcd_xy((x), (y)); lcd_puts_P((str_p)); } while(0)
|
|
|
|
/** Show char at X, Y */
|
|
#define lcd_putc_xy(x, y, c) do { lcd_xy((x), (y)); lcd_putc((c)); } while(0)
|
|
|
|
/** Set cursor position */
|
|
void lcd_xy(const uint8_t x, const uint8_t y);
|
|
|
|
/** Set LCD cursor. If not enabled, only remember it. */
|
|
#define CURSOR_NONE 0b00
|
|
#define CURSOR_BAR 0b10
|
|
#define CURSOR_BLINK 0b01
|
|
#define CURSOR_BOTH 0b11
|
|
void lcd_cursor(uint8_t type);
|
|
|
|
/** Display display (preserving cursor) */
|
|
void lcd_disable();
|
|
|
|
/** Enable display (restoring cursor) */
|
|
void lcd_enable();
|
|
|
|
/** Go home */
|
|
void lcd_home();
|
|
|
|
/** Clear the screen */
|
|
void lcd_clear();
|
|
|
|
/** Define a glyph - 8 bytes, right 5 bits are used */
|
|
void lcd_glyph(const uint8_t index, const uint8_t* array);
|
|
|
|
/** Define a glyph that's in PROGMEM */
|
|
void lcd_glyph_P(const uint8_t index, const uint8_t* array);
|
|
|
|
/** Set address in CGRAM */
|
|
void lcd_addr_cg(const uint8_t acg);
|
|
|
|
/** Set address in DDRAM */
|
|
void lcd_addr(const uint8_t add);
|
|
|