pic to pc communication

[Einly]

Dear all,

I am trying to do commmunication between PIC 16f876 and the PC. I have successfully sent characters and string from the PIC and sent characters to PIC. However, I am not sure how to send string from PC to PIC.

This is the program that I used to send and receive characters

#include <16F876.h>
#use delay(clock=20000000)
#fuses hs,noprotect,nowdt,nolvp
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7,parity=N)
#byte PORTA=5
#byte PORTB=6
#byte PORTC=7

main()
{
int i;
char answer;

set_tris_b(0); //set pin b0-b7 as output
delay_ms(1000);

printf("Press any key to begin\n\r");
getc();

printf("Continue (Y/N)?\n\r");

do
{
answer=getc();
}while(answer!='Y'&&answer!='N');

printf("End\n\r");

}


Can anybody help me? How to use gets?

Einly
___________________________
This message was ported from CCS's old forum
Original Post ID: 144514719

[John Taylor]

<a href="http://www.tayloredge.com/utilities/scmd.c" TARGET="_blank">http://www.tayloredge.com/utilities/scmd.c</a>
<a href="http://www.tayloredge.com/utilities/scmd.h" TARGET="_blank">http://www.tayloredge.com/utilities/scmd.h</a>
<a href="http://www.tayloredge.com/utilities/convert.h" TARGET="_blank">http://www.tayloredge.com/utilities/convert.h</a>

This code reads characters at the #RDA interrupt level and converts the incomming ASCCI data to a binary array. When a complete frame is received, a flag is set that is read by the main level code as "command ready". Main level code then acts on and (If required) responds.

Example main code is included in the commented section at the beginning of scmd.c which allows start to finish implementation in minutes.

The command structure is as follows:

Command-
$aaccdd...dd[cr]

Response-
!aaccdd...dd[cr]

$/! Frame start for command/response
aa Unit address for bussed system, defaults to 0x00
cc Command code
dd 0 to 16 btyes of ASCII Hex data
[cr] Frame terminator

Read scmd.c, it's pretty detailed.

I don't charge for this, (I must be retarded!) Any questions may be submitted to the contact page. If there is any interest, I can work up a VB6 example driver. Enjoy

John Taylor
Taylor Electronics Services
<a href="http://www.tayloredge.com/contact/index.html" TARGET="_blank">http://www.tayloredge.com/contact/index.html</a>


:=Dear all,
:=
:=I am trying to do commmunication between PIC 16f876 and the PC. I have successfully sent characters and string from the PIC and sent characters to PIC. However, I am not sure how to send string from PC to PIC.
:=
:=This is the program that I used to send and receive characters
:=
:=#include <16F876.h>
:=#use delay(clock=20000000)
:=#fuses hs,noprotect,nowdt,nolvp
:=#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7,parity=N)
:=#byte PORTA=5
:=#byte PORTB=6
:=#byte PORTC=7
:=
:=main()
:={
:= int i;
:= char answer;
:=
:= set_tris_b(0); //set pin b0-b7 as output
:= delay_ms(1000);
:=
:= printf("Press any key to begin\n\r");
:= getc();
:=
:= printf("Continue (Y/N)?\n\r");
:=
:= do
:= {
:= answer=getc();
:= }while(answer!='Y'&&answer!='N');
:=
:= printf("End\n\r");
:=
:=}
:=
:=
:=Can anybody help me? How to use gets?
:=
:=Einly
___________________________
This message was ported from CCS's old forum
Original Post ID: 144514723

[Steve H.]

You can see what I do for a data acq system at my homepage,

Steve H.
___________________________
This message was ported from CCS's old forum
Original Post ID: 144514726