ex_icd.c

来自「TI公司的CCS一些常用的函数库」· C语言 代码 · 共 70 行

/////////////////////////////////////////////////////////////////////////
////                            EX_ICD.C                             ////
////                                                                 ////
////  This is a simple program used to demonstrate the use of the    ////
////  ICD as a device.  The example does some simple math and then   ////
////  flashes a LED at a frequency of 1Hz.                           ////
////                                                                 ////
////  Configure the CCS prototype card as follows:                   ////
////     Jumper from pin 42 to 47.                                   ////
////     See additional connections below.                           ////
////                                                                 ////
////  This example will work with the PCM compiler.  The following   ////
////  conditional compilation lines are used to include a valid      ////
////  device for each compiler.  Change the device and clock for     ////
////  your hardware if needed.                                       ////
/////////////////////////////////////////////////////////////////////////
////        (C) Copyright 1996,2003 Custom Computer Services         ////
//// This source code may only be used by licensed users of the CCS  ////
//// C compiler.  This source code may only be distributed to other  ////
//// licensed users of the CCS C compiler.  No other use,            ////
//// reproduction or distribution is permitted without written       ////
//// permission.  Derivative programs created using this software    ////
//// in object code form are not restricted in any way.              ////
/////////////////////////////////////////////////////////////////////////


#if defined(__PCM__)
#include <16F877.h>
#device ICD=TRUE
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#endif

#define  TOGGLE_PIN  PIN_B0


// This function turns the LEDs on and off
void flash_led() {

   output_low(TOGGLE_PIN);
   delay_ms(500);
   output_high(TOGGLE_PIN);
   delay_ms(500);
}


// This function does simple math and also turns the LEDs on and
// of at a frequency of 1Hz
void main()   {
   int a,b,c;
   long al,bl,cl;
   
   a=10;             // initialize variables
   b=25;
   
   al=300;
   bl=525;
   
   c=a+b;            // simple math operations

   c=a*b;

   cl=al+bl;

   cl=al*bl;
   
   while(TRUE)       // flash LEDs at 1Hz
      flash_led();
}