tachosoft mileage

[gifret]

hi friends.

i want know something .

i have dash dacia logan eeprom 93c56 who i changed his mileage . the soft tacho soft mileage calculator see to change offset from 0x0d4 to 0x0eb

with mileage and i have this km 210000 and the soft give this value 210000km = CBAC34500003

my question is how he calculate this value .

if i change value 210000 decimal to hex he give 33450 km

im curios to know how it make this value
CBAC34500003

thanks very much

[jomberykaso]

210000 to Hex = 00 03 34 50

00 03 34 50 swapped is 50 34 03 00

50 34 03 00 swapped again = 34 50 00 03



00 03 34 50 xor FFFF = 3 CB AF

CB AF - 3 = CB AC (this is the checksum )

Now join the Checksum with mileage reswapped


CB AC 34 50 00 03

[gifret]

thanks my friend

[jomberykaso]

thanks my friend

Your welcome.