eater.h

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#ifndef _EATER_H_
#define _EATER_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
// Get the value of the system millisecond tick counter.
unsigned long millis(void);
 
// Wait for a specific number of milliseconds.
void delay(unsigned ms);
 
// LCD instructions.
#define LCD_I_CLEAR     0x01    // Clear the display.
#define LCD_I_HOME      0x02    // Move the cursor to the home position.
#define LCD_I_MODE_INC  0x06    // Set mode to increment, no display shift.
#define LCD_I_DISP_OFF  0x08    // Display off, cursor off, blinking off.
#define LCD_I_DISP_ON   0x0E    // Display on, cursor on, blinking off.
#define LCD_I_MOVE_L    0x10    // Move the cursor left one position.
#define LCD_I_MOVE_R    0x14    // Move the cursor right one position.
#define LCD_I_SHIFT_L   0x18    // Move the display left one position.
#define LCD_I_SHIFT_R   0x1C    // Move the display right one position.
#define LCD_I_FUNC_SET  0x28    // 4-bit mode, 2 lines, 5x8 font.
#define LCD_I_CGRAM     0x40    // Set CGRAM address (offset in low bits).
#define LCD_I_DDRAM     0x80    // Set DDRAM address (offset in low bits).
 
// Initialize the LCD in 4-bit mode, 2 lines, 5x8 font and clear the display.
void lcd_init(void);
 
// Send an instruction to the LCD.
void lcd_instruction(unsigned char insn);
 
// Put a character to the LCD.
void lcd_putchar(unsigned char c);
 
// Put a string to the LCD.
void lcd_puts(const char *str);
 
#ifdef __cplusplus
}
#endif
 
#endif // not _EATER_H_