Simple Parallel to Serial PIC based Interface

[The_Mole_763682]

Hi Everyone,

The first project I would like to share with you is one made out of a need to grab the printed output from a piece of medical equipment that only had a parallel port.
It is currently fixed at 38,400 baud on the serial port but this is simple to change.
As the code is only 5% of the memory space on the Pic16F716 / PIC16F819, you can make whatever changes you want.

Attached are the Eagle Schematic and board, as well as the source code in C (CCS PICC compiler v3).
(Zipped - no password)

Any questions, please ask.
edit: added BRD/SCH! (took out copyright info

-Mole

[sadman]

Hi Everyone,

The first project I would like to share with you is one made out of a need to grab the printed output from a piece of medical equipment that only had a parallel port.
It is currently fixed at 38,400 baud on the serial port but this is simple to change.
As the code is only 5% of the memory space on the Pic16F716 / PIC16F819, you can make whatever changes you want.

Attached are the Eagle Schematic and board, as well as the source code in C (CCS PICC compiler v3).
(Zipped - no password)

Any questions, please ask.

-Mole

hi friend there is no board and schematic in your upload only code

regards
sadman

[The_Mole_763682]

Hi Sadman,

Sorry about that.. Uploaded this morning!

-Mole

[LazBoy]

Could you add "ParSer1.h"  header file also.

[The_Mole_763682]

It wont let me upload the .h as an attachment, or re-modify the main post, so here it is as a code block

Parser1.h

Code:

#include <16F716.h>
#device adc=8
#use delay(clock=16000000)
#fuses WDT, HS, NOPUT, NOPROTECT, BORV25, NOBROWNOUT
#define STROBE_   PIN_A0
#define ACK_   PIN_A1
#define BUSY   PIN_A2
#define RX   PIN_A3
#define TX   PIN_A4
#define LED  PIN_A2
#use rs232(baud=38400,parity=N,xmit=PIN_A4,rcv=PIN_A3)

you can substitute the PIC16F819 if you prefer that chip - i think the 716 is a little cheaper!


<Note to self: I really need to pay more attention in class>

Posted on: March 26, 2011, 01:32:09 13:32 - Automerged
Here is the lastest board schematic/layouts.

I didnt post this before as it wasn't a tested layout.

I received some PCB's for this Friday, and built one to test it - all ok and no errors!

If anyone is interested, and I don't know if this is allowed on here, but I have a handful of pcb's that were made for this project.  There are a couple of design faults (needs 3 wires adding) which is why they are not being used. 
They cost me 3 GBP each, and if anyone wants one, I could post one for the cost of it?
(moderator please delete this section if it's not allowed)