16f877 with LM335 problem

[Tabsoft]

Roger,

Check out section 9.1.6 "Result Formatting" of the Datasheet.
It shows the difference in the two formatting options.

In essence Right Shifted will place the 10-bit value in bits 9 through 0 (MSB is bit9).
Left Shifted will place the 10-bit value in bits 15 through 6 (MSB is bit15)

So if your ADC reading is 250 then here would be the values.
Right Shifted = 250 (%0000 0000 1111 1010)
Left Shifted = 1600 (%0011 1110 1000 0000)

[flotulopex]

Thanks Tabsoft,

I already read that chapter may times but I just can't understand what this feature is meant for.

Why would one choose either option?

I need an example of both usage, maybe this could help

[Ioannis]

If you want to use only 8 bit (may be it is enough for specific application) then the left justified result will give yout the number in the ADRESH directly. No shifting or dividing required.

But for the full 10 bit results you have to right justify the bytes in the ADRESH-ADRESL to be correct.

Ioannis

[flotulopex]

Okay, I think, I've got it now. Next problem: I need to remember it