Basically you have to set up A/D converter to measure the LM35 voltage and convert its 10 mV / Degree K into C
or F.
The A/D part fairly straightforward, reading writing some registers, the math a little more involved, especially in
ASM.
Take a look around web how A/D was used to get started. ASM is fairly rugged new learner stuff, but actually
very basic in its operations, easy to understand what an instruction does. But creating "larger" human interface
stuff, learning addressing in ASM and the like, is involved.
When I first tackled a new processor back in 70's first thing I did was write from scratch an easy project, like
a time of day clock. And built from there. Point being climb stairs before trying Everest. And I read the instruction
set several times at night to get some of it "stuck" on my wall like gum. Then light bulbs began to turn on in my
IQ of 10 brain pan.
Regards, Dana.