A Small Multi-Tasking Operation System Using 8051: irda

00001 /**************************************************
00002 * Task to run in operation
00003 * Function: Irda signal handler 
00004 *
00005 * File:    irda_task.c
00006 * Author:  Book Chen
00007 * 2008.08.08 
00008 ****************************************************
00009 */
00010 #include "..\inc\includes.h"
00011 #include "..\tasks\task_includes.h"
00012 #include "..\os_core\os_includes.h"
00013 
00014 void F_IrdaTask(void) LargeReentrant;
00015 void F_IrdaTaskInit(void) LargeReentrant;
00016 
00017 void F_IrdaTaskInit(void) LargeReentrant{}
00018 void F_IrdaTask(void) LargeReentrant{
00019     INT8U i=0;
00020 
00021     F_IrdaTaskInit(); 
00022     while(1){
00023         if(F_IrdaCheckKeyInBuffer()==IRDA_KEY_BUFFER_EMPTY){ // If no ir key in, task switch out.
00024             #if(ENABLE_TASK_LEVEL_CSW==1)   
00025                OS_ENTER_CRITICAL();                      // Enter critical section
00026                OsCoreScheduler();                          // Task level context switch
00027                OS_EXIT_CRITICAL();                       // Exit critical section
00028             #endif         
00029         }
00030         i=F_IrdaGetKey();                                // Get a irda key
00031         if(i==0x80){                                          
00032             LcmChar[47]='8';                             // Show '80' on lcm
00033             LcmChar[48]='0';
00034             F_MotorDirectionSet(1);                      // If ir key code is 0x80, set motor to run clockwise.
00035         }
00036         else if(i==0x40){                                // If ir key code is 0x80, set motor to run clockwise.
00037             LcmChar[47]='4';                             // Show '40' on lcm
00038             LcmChar[48]='0';
00039             F_MotorDirectionSet(0);                      // If ir key code is 0x80, set motor to run clockwise.       
00040         }                  
00041     }
00042 }