#include "lc7981.h"
Functions | |
void | lcd_init (uint8_t mode) |
lcd_init set the to default values. | |
void | lcd_write_command (uint8_t cmd, uint8_t data) |
Writes a command and a data byte to the lcd. | |
uint8_t | lcd_read_byte () |
Reads a byte from the display memory. | |
void | lcd_strobe () |
Generates the strobe signal for writing data. | |
void | lcd_clear () |
Clears the display by setting the whole memory to 0. | |
void | lcd_write_text (char *txt) |
void | lcd_gotoxy (uint8_t x, uint8_t y) |
Set the display cursor to a specific location. | |
void | lcd_plot_pixel (uint8_t x, uint8_t y, uint8_t set) |
set or unset a pixel at the specified location | |
void | lcd_plot_bitmap (uint8_t x_off, uint8_t y_off, const uint8_t *bitmap, uint8_t w, uint8_t h) |
Variables | |
uint8_t | lcd_mode |
Currently used mode, can be text or graphic. | |
uint8_t | lcd_curline |
Current line. Used for scrolling in text mode. |
void lcd_clear | ( | ) | [inline] |
Clears the display by setting the whole memory to 0.
void lcd_gotoxy | ( | uint8_t | x, | |
uint8_t | y | |||
) | [inline] |
Set the display cursor to a specific location.
Right now this does only work in text mode, since there's no need for it now in graphics mode.
If the x and y values are to big, the function does nothing.
x | the horizontal cursorposition (starts at 0) | |
y | the vertical cursorposition (starts at 0) |
void lcd_init | ( | uint8_t | mode | ) |
lcd_init set the to default values.
mode | LCD_TEXT for text mode and LCD_GRAPHIC for graphic mode |
void lcd_plot_bitmap | ( | uint8_t | x_off, | |
uint8_t | y_off, | |||
const uint8_t * | bitmap, | |||
uint8_t | w, | |||
uint8_t | h | |||
) |
void lcd_plot_pixel | ( | uint8_t | x, | |
uint8_t | y, | |||
uint8_t | set | |||
) |
set or unset a pixel at the specified location
x | horizontal position of the pixel (starts at 0) | |
y | horizontal position of the pixel (starts at 0) | |
set | can be PIXEL_ON or PIXEL_OFF |
uint8_t lcd_read_byte | ( | ) | [inline] |
Reads a byte from the display memory.
lcd_gotoxy can be used to set the location. Important : lcd_gotoxy doesn't work in graphics mode yet.
void lcd_strobe | ( | ) | [inline] |
Generates the strobe signal for writing data.
This function is meant for internal usage only.
void lcd_write_command | ( | uint8_t | cmd, | |
uint8_t | data | |||
) | [inline] |
Writes a command and a data byte to the lcd.
cmd | the command byte | |
data | the data that is going to be written after the command |
void lcd_write_text | ( | char * | txt | ) |
uint8_t lcd_curline |
Current line. Used for scrolling in text mode.
uint8_t lcd_mode |
Currently used mode, can be text or graphic.