setting digital I/O, pic16f690, using ccs pcm

Thread Starter

Blasterdito

Joined Jul 9, 2008
5
Huy guys (and girls)

I have two questions

1.
I'm trying to make pic16f690 recive bytes on pin 19 RAO and send bytes on pin 10 RB7,
I have red that I need to make pins digital and also define them as in or out pins, If I'm not mistaking I need to put "set_trisx(...) somewhere?

2. How do I set the internal oscillator
I'm thinking if this is correct, and does this mean that I don't need any external xrstal?

Rich (BB code):
#FUSE INTRC and
#Delay (clock=...)
but I don't know if it's correct.

Here is my code

Rich (BB code):
#include <16F690.h> 
#fuses NOWDT,HS,NOPUT,NOPROTECT
#use delay(clock=8000000)  
#use rs232(baud=2400,parity=N,xmit=PIN_B7,rcv=PIN_B5,bits=9) 
void clockwait(void); 
void main() 
{ 
   unsigned char byt;   // Holds each byte received 
   unsigned char t;     // Variable t declaration
   setup_counters(RTCC_INTERNAL,RTCC_DIV_1); 
   while(1)         // Loop forever... 
   { 
      byt=0;         // Starting a new data frame 
      clockwait();      // Ignore start bit 
      for(t=0;t<8;t++)      // Grab eight bits of data... 
      { 
         clockwait(); 
            byt|=input(PIN_A0)<<t; 
      } 
      clockwait();         // Ignore parity bit 
      clockwait();      // Ignore stop bit 
      putc(byt);         // Send byte to the transmitter 
   }            // ... rinse and repeat :) 
} 
void clockwait(void) 
{ 
   // Waits for the next clock cycle... 
      while(!input(PIN_A1));   // Wait for clock to go HI 
      while(input(PIN_A1));   // Wait for clock to go LO 
}

I've bin trying to figure this out for 3 days now, any help would be extremly appriciated.

:confused:

Regards
 
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