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object BitManipulation {
fun bytesToWord(msb: Int, lsb: Int): Int {
return msb.shl(8) + lsb
}
fun argsToWord(args: IntArray): Int {
return bytesToWord(args[1], args[0])
}
fun getMsb(value: Int): Int {
return value.shr(8)
}
fun getLsb(value: Int): Int {
return value.and(0xFF)
}
fun validateUnsigned8Bit(value: Int) {
if(value < 0 || value > 255) {
throw IllegalArgumentException("Value $value is not an unsigned 8-Bit value")
}
}
fun validateUnsigned16Bit(value: Int) {
if(value < 0 || value > 65535) {
throw IllegalArgumentException("Value $value is not an unsigned 16-Bit value")
}
}
fun isSignedByteNegative(value: Int): Boolean {
return value and (1 shl 7) != 0
}
fun getAbsoluteValue(value: Int ): Int{
return if(isSignedByteNegative(value)) {
0x0100 - value // 1 00000000 - 1xxxxxx = value, due to 2s compliment
} else {
value
}
}
}
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