10.09.2025, 12:00
(10.09.2025, 11:48)Daniel Wrote: Where did you get this function from? crc16(data)
sorry i forget to attached a part...... here for you
Code:
--funzione calcolo CRC16
function crc16(data)
log('valore passato = ',data)
local crc = 0xFFFF
for i = 1, #data do
crc = bit.bxor(crc, data:byte(i))
for j = 1, 8 do
local k = bit.band(crc, 1)
crc = bit.rshift(crc, 1)
if k ~= 0 then
crc = bit.bxor(crc, 0x8408)
end
end
end
--return bit.bxor(crc, 0xFFFF)
result = string.format("%04X",bit.bxor(crc, 0xFFFF))
result_low = string.sub(result, 3 , 4)
result_high = string.sub(result, 1 , 2)
crc_calc = (',0x'..result_low..',0x'..result_high)
return crc_calc
end