#ifndef SED1520_H_
#define SED1520_H_

// define to disable busy-delays (useful for simulation)
//// #define LCD_SIM (1)
// define to enable additional debugging functions
//// #define LCD_DEBUG (1)

#include <stdint.h>
#include "bmp.h"

/* equate the LCD Controller control signals to their port assignments */

#define LCDDATAPORT  PORTA
#define LCDDATADDR   DDRA

#define LCDCTRLPORT  PORTB
#define LCDCTRLDDR   DDRB
#define LCDCMDPIN    PB0
#define LCDE1PIN     PB1
#define LCDE2PIN     PB2

/* draw modes */
#define LCD_MODE_CLEAR     0
#define LCD_MODE_SET       1
#define LCD_MODE_XOR       2

/* command function equates for SED1520 LCD Display Controller */
#define LCD_DISP_OFF       0xAE	/* turn LCD panel OFF */
#define LCD_DISP_ON        0xAF	/* turn LCD panel ON */
#define LCD_SET_LINE       0xC0	/* set line for COM0 (4 lsbs = ST3:ST2:ST1:ST0) */
#define LCD_SET_PAGE       0xB8	/* set page address (2 lsbs = P1:P0) */
#define LCD_SET_COL        0x00	/* set column address (6 lsbs = Y4:Y4:Y3:Y2:Y1:Y0) */
#define LCD_SET_ADC_NOR    0xA0	/* ADC set for normal direction */
#define LCD_SET_ADC_REV    0xA1	/* ADC set for reverse direction */
#define LCD_STATIC_OFF     0xA4	/* normal drive */
#define LCD_STATIC_ON      0xA5	/* static drive (power save) */
#define LCD_DUTY_16        0xA8	/* driving duty 1/16 */
#define LCD_DUTY_32        0xA9	/* driving duty 1/32 */
#define LCD_SET_MODIFY     0xE0	/* start read-modify-write mode */
#define LCD_CLR_MODIFY     0xEE	/* end read-modify-write mode */
#define LCD_RESET          0xE2	/* soft reset command */

/* LCD screen and bitmap image array consants */
#define LCD_X_BYTES		122
#define LCD_Y_BYTES		4
#define SCRN_LEFT		0
#define SCRN_TOP		0
#define SCRN_RIGHT		121
#define SCRN_BOTTOM		31

/* SED1520 is used with reverse direction (ADC_REV). 
   This value is the address of the leftmost column: */
#define LCD_STARTCOL_REVERSE	19

/* LCD Global data arrays */
extern const unsigned char l_mask_array[8]; // TODO: progmem
extern unsigned char l_display_array[LCD_Y_BYTES][LCD_X_BYTES];

/* LCD function prototype list */
extern void lcd_init(void);
extern void lcd_out_dat(const unsigned char dat, const unsigned char nctrl);
extern void lcd_out_ctl(const unsigned char cmd, const unsigned char nctrl);
extern void lcd_fill(const unsigned char pattern);
extern void lcd_erase(void);
extern void lcd_update(const unsigned char top, const unsigned char bottom);
extern void lcd_update_all(void);

void lcd_dot(const unsigned char x, const unsigned char y, const unsigned char mode);
#define lcd_dot_set(x,y)    lcd_dot(x, y, LCD_MODE_SET)
#define lcd_dot_clear(x,y)  lcd_dot(x, y, LCD_MODE_CLEAR);
#define lcd_dot_switch(x,y) lcd_dot(x, y, LCD_MODE_XOR);

extern void lcd_line( uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, const uint8_t mode );
extern void lcd_rect( const uint8_t x, const uint8_t y, uint8_t width, uint8_t height, const uint8_t mode);
extern void lcd_box(const uint8_t x, const uint8_t y, uint8_t width, const uint8_t height, const uint8_t mode);
extern void lcd_circle(const uint8_t xCenter, const uint8_t yCenter, const uint8_t radius, const uint8_t mode);

extern void lcd_glyph(uint8_t left, uint8_t top, uint8_t width, uint8_t height, uint8_t *glyph_ptr, uint8_t store_width);
extern void lcd_text(uint8_t left, uint8_t top, uint8_t font, const char *str);
extern void lcd_text_p(uint8_t left, uint8_t top, uint8_t font, const char *str);
#define lcd_text_P(lcdl_,lcdt_,lcdf_,lcds_) \
	lcd_text_p(lcdl_,lcdt_,lcdf_,PSTR(lcds_))
extern void lcd_bitmap(const uint8_t left, const uint8_t top, const struct IMG_DEF *img_ptr, const uint8_t mode);

#ifdef LCD_DEBUG
extern void lcd_test(const unsigned char pattern);
extern void lcd_raw(const unsigned char page, const unsigned char col, const unsigned char nctrl, const unsigned char pattern);
#endif

#endif