/* -----------------------------------------------------------------
 * --  _____       ______  _____                                    -
 * -- |_   _|     |  ____|/ ____|                                   -
 * --   | |  _ __ | |__  | (___    Institute of Embedded Systems    -
 * --   | | | '_ \|  __|  \___ \   Zurich University of             -
 * --  _| |_| | | | |____ ____) |  Applied Sciences                 -
 * -- |_____|_| |_|______|_____/   8401 Winterthur, Switzerland     -
 * ------------------------------------------------------------------
 * --
 * -- main.c
 * --
 * -- main for Computer Engineering "Bit Manipulations"
 * --
 * -- $Id: main.c 744 2014-09-24 07:48:46Z ruan $
 * ------------------------------------------------------------------
 */
//#include <reg_ctboard.h>
#include "utils_ctboard.h"

#define ADDR_DIP_SWITCH_31_0 0x60000200
#define ADDR_DIP_SWITCH_7_0  0x60000200
#define ADDR_LED_31_24       0x60000103
#define ADDR_LED_23_16       0x60000102
#define ADDR_LED_15_8        0x60000101
#define ADDR_LED_7_0         0x60000100
#define ADDR_BUTTONS         0x60000210

// define your own macros for bitmasks below (#define)
/// STUDENTS: To be programmed
#define BRIGHT_MASK 0xC0
#define DARK_MASK 0xCF
#define BUTTON_MASK 0x0F
#define T0_MASK 0x01
#define T1_MASK 0x02
#define T2_MASK 0x04
#define T3_MASK 0x08



/// END: To be programmed

int main(void)
{
    uint8_t led_value = 0;

    // add variables below
    /// STUDENTS: To be programmed
		uint8_t button_value = 0;
		uint8_t button_counter = 0;
		uint8_t button_counter2 = 0;
		int counted = 0;
		int executed = 0;
	
		uint8_t led_23_16_value = 0x00;



    /// END: To be programmed

    while (1) {
        // ---------- Task 3.1 ----------
        led_value = read_byte(ADDR_DIP_SWITCH_7_0);

        /// STUDENTS: To be programmed
				/// Task 3.1
				led_value = (led_value | BRIGHT_MASK);
				led_value = (led_value & DARK_MASK);
			
				///Task 3.2
				button_value = read_byte(ADDR_BUTTONS);
				button_value = button_value & BUTTON_MASK;
			
				if((button_value & T0_MASK) > 0) {
					button_counter = button_counter + 1;
					if(counted == 0) {
						button_counter2 = button_counter2 + 1;
						counted = 1;
					}
				} else {
					counted = 0;
				}
				
				/// Task 3.3
				if((button_value & T0_MASK) > 0) {
					if(executed == 0) {
						led_23_16_value = led_23_16_value>>1;
						executed = 1;
					}
				} else if ((button_value & T1_MASK) > 0) {
					if(executed == 0) {
						led_23_16_value = led_23_16_value<<1;
						executed = 1;
					}
				} else if ((button_value & T2_MASK) > 0) {
					if(executed == 0) {
						led_23_16_value = ~ led_23_16_value;
						executed = 1;
					}
				} else if ((button_value & T3_MASK) > 0) {
					if(executed == 0) {
						led_23_16_value = read_byte(ADDR_DIP_SWITCH_7_0);
						executed = 1;
					}
				} else {
					executed = 0;
				}
				
				
				
				
				write_byte(ADDR_LED_15_8, button_counter);
				write_byte(ADDR_LED_31_24, button_counter2);
				write_byte(ADDR_LED_23_16, led_23_16_value);


        /// END: To be programmed

        write_byte(ADDR_LED_7_0, led_value);

        // ---------- Task 3.2 and 3.3 ----------
        /// STUDENTS: To be programmed




        /// END: To be programmed
    }
}