Zesky665
How to parse bitstring?
Hi,
Anyone know how to parse a bitstring?
I have values like this : <<170, 192, 65, 0, 100, 0, 61, 86, 56, 171>> coming in from a sensor.
I need to get 65 ad 100 out to of that without changing them to another number. Anyone have an idea as to how to do that?
Thanks
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Something like this:
iex> x = <<170, 192, 65, 0, 100, 0, 61, 86, 56, 171>>
iex> << _ :: bytes-4, onehundred :: bytes-1, _ :: bytes-1, sixtyone :: bytes-1, _rest :: binary >> = x
<<170, 192, 65, 0, 100, 0, 61, 86, 56, 171>>
iex> onehundred
"d"
iex> sixtyone
"="
This assumes you want the fields as binaries. If you want them as integers:
iex> << _ :: bytes-4, onehundred :: size(8), _ :: bytes-1, sixtyone :: size(8), _rest :: binary >> = x
<<170, 192, 65, 0, 100, 0, 61, 86, 56, 171>>
iex> sixtyone
61
iex> onehundred
100
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