Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/huawei_solar/array_ext.rb

Overview

https://github.com/rmodbus/rmodbus/issues/57

Instance Method Summary collapse

Instance Method Details

#to_32i ⇒ Object

Given an array of 16bit Fixnum, we turn it into 32bit signed int in big-endian order, halving the size



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# File 'lib/huawei_solar/array_ext.rb', line 23

def to_32i
  raise "Array requires an even number of elements to pack to 32bits: was #{size}" unless size.even?

  to_32u.map { |n| to_signed32(n) }
end

#to_32i_le ⇒ Object

Given an array of 16bit Fixnum, we turn it into 32bit signed int in little-endian order, halving the size



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# File 'lib/huawei_solar/array_ext.rb', line 30

def to_32i_le
  raise "Array requires an even number of elements to pack to 32bits: was #{size}" unless size.even?

  to_32u_le.map { |n| to_signed32(n) }
end

#to_32u ⇒ Object 



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# File 'lib/huawei_solar/array_ext.rb', line 5

def to_32u
  raise "Array requires an even number of elements to pack to 32bits: was #{size}" unless size.even?

  each_slice(2).map { |(msb, lsb)| [msb, lsb].pack("n*").unpack1("N") }
end

#to_32u_le ⇒ Object

Given an array of 16bit Fixnum, we turn it into 32bit unsigned int in little-endian order, halving the size



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# File 'lib/huawei_solar/array_ext.rb', line 12

def to_32u_le
  raise "Array requires an even number of elements to pack to 32bits: was #{size}" unless size.even?

  each_slice(2).map { |(lsb, msb)| [msb, lsb].pack("n*").unpack1("N") }
end

#to_signed32(number) ⇒ Object 



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# File 'lib/huawei_solar/array_ext.rb', line 18

def to_signed32(number)
  number >= 2_147_483_648 ? number - 4_294_967_296 : number
end