Problem PIC 16F877 and PCF8583

ziko89 · Joined: 25 Apr 2012 Posts: 2

hi
I have a problem using PCF8583. I don't understand how to extract data from the PCF and use it in the 16F877. I tried but I can't do it. Please help me. I've copy the driver that I've found here http://www.ccsinfo.com/forum/viewtopic.php?t=27988
but I can't use the data extracted from the PCF. My goal is to output the date and time on led Matrix.
Please help.

ezflyr · Joined: 25 Oct 2010 Posts: 1019 Location: Tewksbury, MA

Hi,

Your post is very ambiguous. Do you mean you can't run the code supplied by PCM programmer in the link you provided, or that you can run that code, you just can't display it to your LED matrix?

John

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

1. Post the part number of your LED matrix.

2. Post a schematic of your design, showing the PIC and the LED matrix
and all required circuits. Use a free image hosting service such as
http://www.imageshack.us (or a similar service) and post the link to your
schematic here.

3. Tell us if you can make the PCF8583 driver work OK with RS-232
output displayed on a Terminal window in your PC. In other words,
get the PCF8583 driver working first. Next, get the LED matrix working
by itself, with just a simple "1234" displayed on it. Finally, combine the
PCF8583 code with the LED matrix code and try to make them work
together. Solve the problem in small steps.

ziko89 · Joined: 25 Apr 2012 Posts: 2

i can't make the PCF 8583 work

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Are you trying to make it work with RS-232 output going to a Terminal
window on your PC ? That's what I suggested to do first.