/*********************************************************************************/
/**
 * File: dvoraj42.h
 * Author: Jan Dvořák z Vozerovic 
 * FEL-ID: dvoraj42
 * e-mail: dvorkaman@gmail.com
 * site: dvorkaman.php5.cz
 */

#ifndef __dvoraj42_h__
#define __dvoraj42_h__

/*********************************************************************************/
/**
 * Defines
 */
#define FLASH_START 0x08008000  	// start address of Page 0 of FLASH    128KB -> medium density; 128 pages * 1KB
#define FLASH_END   0x0800C000  	// physically ends on 0x0800BFFF
#define FLASH_PAGE_SIZE 1024		// = 2^10 = 1KB


#define SEGMENT_DATA GPIO_Pin_10   // PORT C
#define SEGMENT_CLK GPIO_Pin_11	   // PORT C
#define SEGMENT_WRL GPIO_Pin_12	   // PORT C
#define SEGMENT_DELAY 0xF	   	   // how long keep logic ONE (in cycles)

#define LCD_DATA4 GPIO_Pin_0	
#define LCD_DATA5 GPIO_Pin_1 
#define LCD_DATA6 GPIO_Pin_2 
#define LCD_DATA7 GPIO_Pin_3
#define LCD_DATA_PORT GPIOC

#define LCD_RS GPIO_Pin_1			
#define LCD_ENABLE GPIO_Pin_2		
#define LCD_SIGNAL_PORT GPIOB
#define LCD_DELAY 0xF				// wait after pins are changed

#define USART_TX GPIO_Pin_9
#define USART_RX GPIO_Pin_10

#define KEY_1 0x100
#define KEY_2 0x010
#define KEY_3 0x001
#define KEY_4 0x020
#define KEY_5 0x002
#define KEY_6 0x800
#define KEY_7 0x080
#define KEY_8 0x008
#define KEY_9 0x040
#define KEY_0 0x004
#define KEY_F 0x200
#define KEY_N 0x400
#define KEY_NONE 0x000
			 
#define KEY_OD_CHANGE 0xF	// cycles
#define KEY_MINIMAL_TIME 20 // ms of press

#define USER_NAME_LENGT 20

typedef struct
{
	vu32 s;
	vu32 ms;
} timeStruct;

typedef struct
{
	int key;
	int time;
} pressedKey;

typedef struct
{
	unsigned int value;	
	bool longN;
	bool longF;
	bool F;
	bool N;
}password;

typedef struct
{
	int key; // as [0]..[9], 1, N		
	bool longN;
	bool longF;	
}input;

// Unit in Flash Memory
typedef struct
{
	uint32_t preambule; // determine valid entry in DB   0b0110 1001 .... = 0x6969 6969
	uint32_t pass;
	uint8_t name[USER_NAME_LENGT]; //20 * 8b char
	uint32_t crc; // another validation check	
}user;

/*********************************************************************************/
/**
 * Headers
 */
void delayCycles(vu32 cycles);
void delayMS(vu32 ms);
void configureKeyboard(void);
void setKeyboardToDefaultState(void);
int readKeyboard(void);
void configureSegment(void);
void writeToSegment(int letter);
int getTimeDiff(timeStruct startTime, timeStruct endTime);

void keyboardCycle(void);
bool keyboardIsPressed(void);
pressedKey getPressedKey(void);
void keyboardClearState(void);
pressedKey waitForKeyboardIsReleased(void);
int getSegmentEquivalentOfKey(int key);
int getNumberEquivalentOfKey(int key);
int getSegmentEquivalentOfNumber(int digit);

void USARTsendChar(int ch);
void USARTsendString(int* string);

void configureLCD(void);
void initializeLCD(void);
void sendDataBitsToLCD(int bits);
void sendCommandToLCD(int bits);
void LCDSendChar(int ch);
void LCDSetCursorHome(void);
void LCDSetCursor(int x, int y);
void LCDSendString(char* string);
void LCDClear(void);

input readInput( void(*callFunction)(void) );
password getEmptyPassword(void);
user getEmptyUser(void);

/*********************************************************************************/
#endif