made integer conversion functions fixed in fixed_point class and shift operand unsigned char
made integer conversion functions fixed in fixed_point class and shift operand unsigned char

BrewPi/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,BrewPi/firmware,glibersat/firmware,etk29321/firmware,etk29321/firmware,BrewPi/firmware,BrewPi/firmware,etk29321/firmware,glibersat/firmware,glibersat/firmware,BrewPi/firmware,BrewPi/firmware,etk29321/firmware,glibersat/firmware,etk29321/firmware,glibersat/firmware,glibersat/firmware,BrewPi/firmware