KNX - Dali Device Diagnostic telegram Decoding

[admin]

For strings and binary data bytes are ordered from left to right not the other way round.
Just reverse the numbering in your script and it should work.

Code:

value = event.getvalue()

function getbit(value, nr)
  value = bit.rshift(value, nr)
  return bit.band(value, 1) == 1
end

bytes = { value:byte(1, #value) }

b1 = bytes[ 10 ]
if b1 then
  grp.checkupdate('32/1/1', getbit(b1, 0))
  grp.checkupdate('32/1/2', getbit(b1, 1))
  grp.checkupdate('32/1/3', getbit(b1, 2))
  grp.checkupdate('32/1/4', getbit(b1, 3))
  grp.checkupdate('32/1/5', getbit(b1, 4))
end

b2 = bytes[ 9 ]
if b2 then
  grp.checkupdate('32/1/6', getbit(b2, 0))
  grp.checkupdate('32/1/7', getbit(b2, 1))
  grp.checkupdate('32/1/8', getbit(b2, 2))
  grp.checkupdate('32/1/9', getbit(b2, 3))
  grp.checkupdate('32/1/10', getbit(b2, 4))
  grp.checkupdate('32/1/11', getbit(b2, 5))
  grp.checkupdate('32/1/12', getbit(b2, 6))
  grp.checkupdate('32/1/13', getbit(b2, 7))
end

grp.checkupdate('32/1/14', bytes[ 8 ])
grp.checkupdate('32/1/15', bytes[ 7 ])
grp.checkupdate('32/1/16', bytes[ 6 ])
grp.checkupdate('32/1/17', bytes[ 5 ])
grp.checkupdate('32/1/18', bytes[ 4 ])
grp.checkupdate('32/1/19', bytes[ 3 ])
grp.checkupdate('32/1/20', bytes[ 2 ])
grp.checkupdate('32/1/21', bytes[ 1 ])