can anyone help me??

[belinda_sg]

i am a newbie in PIC programming, even in assembly....

i am asked to use PIC18F2320 to do the following things:
i am given a lookup table like this

Input Voltage(x) Output Data(y)
2.75 7.1
2.80 7.2
2.85 7.3
2.90 7.4

as you can see, the relationship between y and x is y=2x+1.6.

i think i should do the follwoing things: first store the output data into EPROM, and form a lookup table, convert the input voltage into digital through ADC, and then relate these two through READ EPROM value...

but i am not sure of all of these things are correct or not...

can anyone help me in this?
and if possible, give me a short solution for that?
i have searched a lot websites, but hard for me to get a complete code example?
and the only ref i can get is the MIC's datasheet for the MCU, but there is no complete codes example...

really thanks for your help...

 

[Nigel Goodwin]

It could easily be done mathematically, the formula is very simple, and easily scalable to get rid of decimal points.

You've already made a lot of posts about this, but you only mention a small piece of the problem each time. It would be a lot better if you posted your exact requirements.

You've also suggested you only need 4 bit resolution from the A2D, that would make it very simple to use a small lookup table (or jump table) to convert from the A2D to what you want.

I presume you mean EEPROM, when you mentioned EPROM?, there's no need to do that, the lookup (or jump) table is simply stored in program memory.