Recoded UART module in more correct manner
Recoded led_button module in more correct manner
Recoded CRC module in more correct manner + UART module changes
Recoded RTC module in more correct manner
Recoded ADC module in more correct manner
Recoded DAC module in more correct form
Recoded EEPROM module in more correct form
added const for CRC module functions
Recoded SDRAM module in more correct manner
Recoded SSP and Timer modules in correct manner
Recoded SysTickTimer module in more correct manner
Recoded PWM, I2C, uIP modules in more correct manner