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16F886 I/O

 
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ccnewbie



Joined: 08 Dec 2008
Posts: 2

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16F886 I/O
PostPosted: Mon Dec 08, 2008 10:34 am     Reply with quote
I am truly a newbie. After discovered some notes at the examples and via forum, I tried some basic idea on getting the input.

Code:
#include <16F886.h>
#device ICD=1
#fuses INTRC,NOWDT, NOLVP, BORV21
#device *=16
#use delay(clock = 4000000)
#use rs232(xmit=PIN_C6, rcv=PIN_C7, baud=9600)

#include "em260.h"

#include "ember_utilities.c"

void main(void)
{     
      set_tris_c (0xff);

      while(TRUE)
      {
   i++;
   c_rate[i] = PIN_C7;
   }   
}


I try to configure pin RC7 as my input (CCS Ember Zigbee kit only allow user interface at port C and analog at port A). I tried to read the serial input by looping and store it to c_rate. Then transmit it using ezspSendUnicast (). Correct me if I am wrong.







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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Dec 08, 2008 10:57 am     Reply with quote
Download the CCS manual.
http://www.ccsinfo.com/downloads/ccs_c_manual.pdf
Look at the list of functions on page 141 (page 153 in the Acrobat reader).
Find the function that allows you to do input from a pin.
Guest
PostPosted: Mon Dec 08, 2008 11:41 am     Reply with quote
Thank you so much for the details ...
ccnewbie



Joined: 08 Dec 2008
Posts: 2

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PostPosted: Tue Dec 09, 2008 3:58 am     Reply with quote
How about if the input is a 3 decimal number from 7 segment display?
Due to the properties of 7 segment display, 7 bits are used to denote a character on the display. Is PIC 16F886 allows up to 8 bits of data input in a time? So that means if 3 characters needed, so an array for the

spi_read()

is required?
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Dec 10, 2008 1:04 am     Reply with quote
Yes it can be put in an array of 3 bytes. Or, 3 separate int8 variables
can hold the data. The Ember kit will have a function that you can call
to read data. But none of us have the Ember kit. I don't have it.
So we can only help you a little.
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