how to read and setup the analog channel for PIC16f628

ozzy · Guest

i use 16f628. for my program, i want to read the analog input from the analog input pin and set the ccp function. i have the problems to setting the adc of the pic. how to read the analog input from the input pin and to setup the adc. i used the common setup like

setup_adc_ports(ALL_ANALOG);
set_adc_channel(1);

and
read_adc()

to access the adc ports butwhen the program is compiled, the reply is that undefined identifier occured. do i need to change the header file for this type of PIC16f628 as i only got the default header. if i need to change the header file, how to do it Question

hope u guys can help me with this. tq

dyeatman · Joined: 06 Sep 2003 Posts: 1924 Location: Norman, OK

As was covered extensively in an earlier post just a week or so ago there are NO ADCs in the 16F628, the ANx pins are analog COMPARATORS!!!! PLEASE READ THE DATASHEET.

If you want to use ADCs try a different chip.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

The 16F628 doesn't have an A/D converter.
See this thread:
http://www.ccsinfo.com/forum/viewtopic.php?t=24753&start=15