Hello again everyone! Today I am trying to get my Arduino to talk to my PIC16F690 Micro-controller. I can get them to talk, just not the same language (metaphor). Any ideas?


Parts List:
WRL-10535 Transmitter http://www.sparkfun.com/products/10535
WRL-10533 Receiver http://www.sparkfun.com/products/10533
PIC16F690 Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/41262c.pdf
Arduino Uno

///////// CCS C Code on 16F690 (Transmitter)

#include <16F690.H>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>


#fuses INTRC_IO, NOWDT, NOPROTECT, NOBROWNOUT, PUT
#use delay(clock=4000000)
#use rs232(baud=4800, xmit=PIN_A0, rcv=PIN_C3)

main() {


    while(1) {

    putc(2);

    }        

}

And for the Arduino:

/////// Arduino Uno Code (Receiver)

int incomingByte = 0;

void setup(){

  Serial.begin(4800);

}

void loop(){

    incomingByte = Serial.read();
    Serial.println(incomingByte, DEC);


}

What it is showing:

///// putc(1); arduino serial monitor shows 64
///// putc(2); arduino serial monitor shows 2 pickit UART shows ˥
///// putc(3); arduino serial monitor shows 160 pickit UART shows ?

///// printf has so far been useless (generally correct on UART, incorrect on Arduino) I have tried millions of combinations, including:

int value = 2;
printf("%d", value);

and other correct printf formats. I have tried to configure it into a long as well since int in arduino is a long in ccsc. I have also used a byte for the receiver which is int in ccsc. They just aren't speaking the same language.



The code I am trying to adapt for the transmitter on the PIC (16F690) works with the arduino, and is as simple as

byte this;

void setup() {

this = 2;

}

void loop() {

Serial.print(this);

}

I really hope someone knows why Serial.print on the arduino works for the transmitter but putc and printf don't work the same in CCsC


Thanks in advance.

 

For some reason I can not locate the button to 'edit' this post. The good news, I have solved the PIC to Arduino problem, below is the code that works. Bad news, I cant seem to communicate PIC to PIC. Please see the code I am trying below and offer input.

Working:

// The 16F690 in CCSC as Transmitter (Working)

#include <16F690.H>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>


#fuses INTRC_IO, NOWDT, NOPROTECT, NOBROWNOUT, PUT
#use delay(clock=4000000)
#use rs232(baud=4800, xmit=PIN_C2, rcv=PIN_A0)

int value;
int count;

main() {

output_high(PIN_A2);


value = "0";

    while(1) {

    count = 0;

        while(count < 20) {

            if(value > 20) {

            value = 0;

            }

    
        printf("%c", value);
        count++;


    }    

value++;    

    }


}



// Arduino Uno as Receiver (Working)

int incomingByte = 0;

void setup(){

  Serial.begin(4800);

}

void loop(){

    incomingByte = Serial.read();
    Serial.println(incomingByte, DEC);


}

Not Working (Please Help):

// Trying to use CCSC W/ 16F690 as Receiver (Not Working)

#include <16F690.H>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>


#fuses INTRC_IO, NOWDT, NOPROTECT, NOBROWNOUT, PUT
#use delay(clock=4000000)
#use rs232(baud=4800, xmit=PIN_A0, rcv=PIN_B5)

int value;

main() {



    while(1) {

        value = getc();
        printf("%d", value);
        printf("\n");

    }

}

So, I can use the PIC as a transmitter, I can use the Arduino as a receiver. Can anyone help me use the PIC as the receiver? I am not sure why the code isn't working (getc())

 

You may need to check to see what variable type ris eturned by the function getc(); It is most likely returning type char.

Try declaring value as type char.

hgmjr