Task 1

At the begining of program, store to the EEPROM memory a set of following values for different LEDs states (active high - 1=>led on):

GP5/GP4/GP3/GP2/GP1/GP0
110111
100101
010010
110000
000111

Then use Timer1 for measuring cca 0,5sec and use its interrupt for changing state of diods -> load to GPIO first value from EEPROM, at next interrupt load second value from EEPROM etc. and at the end start from begining.