Flowcode Support Board

Hello.

When I read the serial number of a DS18B20, it outputs a 12-digit string.
I'd like to convert this to a ULONG variable.
Is there a quick and easy way to do this?

Thank you.

Hello.
It's not that straight forward as 12 digits = 48 bits and not the ULong 32bits.
For that reason you will require two x 32bits ULongs (Or Martins suggestion below of 3 x 16bits)
I have created a flowchart that will convert the 48bits to ULongL and ULongH
If you want a singe ULong value then you could either use just ULongL .
Alternatively, you could use ULongL and OR it with ULongH to give a new ULongL just in case the ULongL of one device is the same as another but ULongH is different.
The likelihood of that happening is veling low indeed.

12 digits won't fit in a 32 bit variable - which could hold 8 hex digits (4bits per digit)

You could convert to 3 x 16bit (unsigned int)

Martin

Ben beat me to it

Thanks to your interest and help, I'm doing well. I'm sending you my macro file for reference.

As an alternative method -take a look at 'hash functions/values' - this is a common technique to assign a (not necessarily but usually) unique value to a string.

See https://en.wikipedia.org/wiki/Hash_function

For some interesting ideas

Martin