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ADD: added the crc8legic to Lua. call it with core.crc8legic

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also a helper function to take a hexstring and calc the crc on it, was added inside utils.lua

   Call it inside a lua-script like this:

        local utils = require('utils')
        local data = '01020304'
	local crc = utils.Crc8Legic(data)
	print (uid,  ('%02x'):format(crc))
This commit is contained in:
iceman1001 2016-02-22 17:50:32 +01:00
commit a75d63f19b
3 changed files with 43 additions and 16 deletions
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15
client/lualibs/utils.lua
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@ -82,6 +82,20 @@ local Utils =
return nil
end,
------------ CRC-16 ccitt checksums
-- Takes a hex string and calculates a crc16
Crc8Legic = function(s)
if s == nil then return nil end
if #s == 0 then return nil end
if type(s) == 'string' then
local utils = require('utils')
local asc = utils.ConvertHexToAscii(s)
local hash = core.crc8legic(asc)
return hash
end
return nil
end,
------------ CRC-16 ccitt checksums
-- Takes a hex string and calculates a crc16
Crc16 = function(s)
@ -96,6 +110,7 @@ local Utils =
return nil
end,
------------ CRC-64 ecma checksums
-- Takes a hex string and calculates a crc64 ecma
Crc64 = function(s)