Need help with MCP9700

Julia · Joined: 17 Feb 2012 Posts: 2

Hi there. I am required to setup the PIC18F46K20 and enable the ADC module to read a temperature sensor using PIC then display at LCD. I'm using MCP9700 and the temperature range is from -40 to +125 deg C. I'm learn a BASIC for the code. Can anyone help to provide the code?

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

The basic form of test program will be similar to this:
http://www.ccsinfo.com/forum/viewtopic.php?t=32168&start=1
You read the A/D value, then convert it to temperature by a math
formula, and then display it on the LCD. Do this every 1/2 second.
In the code in the link, it converts the A/D value to volts. You will
need to create a different formula to convert it to temperature.

The MCP9700 data sheet tells, on the first page on the right side,
how the output voltage is related to the temperature:
http://ww1.microchip.com/downloads/en/devicedoc/21942a.pdf