Hello everyone

     Really hope anyone can help me.
     There is a problem regarding communication
between pic and computer.I can't get them
talk to each other.So I suspect the interfacing
is not probaly done.This is the way I connect the
MAX232A with the Dsub 9pin.Am I corrcet?

   MAX232A Chip   *A=22uf25V

^^^^^^^^^^^^^^|^^^Vdd=5V
              |-----||------->GND
             -|    +  -47uF16V

  -   +(A)    =(A)
 --||--1     +|               16-->Vdd
 |     2-------               15-->GND
 ------3      |               14-->pin2 of dsub9pin

 --||--4                      13-->pin8 of dsub9pin
 |-  +(A)                     12-->to pin10 of itself
 |---- 5 -  +                 11-->to rc6/tx of pic
       6--||--|GND            10-->to pin12 of itself
       7-->pin7 of Dsub9pin    9-->rc7/rx of pic

       8-->pin3 of Dsub9pin

   Please correct me if I am wrong.

(2)second suspicion : the led dont turn off.So
   RCIF of PIR1 is always 0.

LPRCV
                BCF             PORTC,5;to turn on
;                                      ;led
                BTFSS           PIR1,RCIF
                GOTO            LPRCV
;
                BSF             PORTC,5;to turn off
                BTFSC           RCSTA,FERR

     Thank you very much for reading my mail.
Any advice will be appreciate.
     Thank you again.

Chee Sze Keat



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