os_roottask.c

Go to the documentation of this file.

/*********************************************************
*Project: 80X86 32BIT MULTI TASKING OPERATING SYSTEM
*Description: Root task of multi-tasking kernel
*
*File: roottask.c
*Author: Book Chen
*Date: 2010.01.01
***********************************************************
*/
#include "includes.h"

U8 RootTaskName[]="ROOTTASK";
OS_STACK RootTaskStack[ROOT_TASK_STACK_SIZE];

void RootTaskInit(void){
    InterruptInit();      //interrupt initialization
    CgaInit();            //vga initialization
    KeyboardInit();       //keyboard initialization
    Uart1Init();          //com1 initialization and install event
    Uart2Init();          //com2 initialization and install event
    Lpt1Init();           //lpt1 initialization
    RtcInit();            //rtc initialization  and install event
    TimerInit();          //timer initialization
    XmodemInit();         //xmodem initalization
    GuiInit();            //gui initalization and install resource
}

void RootTask(void){
    RootTaskInit();
    OsTaskCreat(ShellTask,(OS_STACK*)&ShellTaskStack[SHELL_TASK_STACK_SIZE-1],&ShellTaskName,0);
    while(1){
        if(KeyboardKeyBufferCheck()!=BUFFER_EMPTY){
            OsEventUp(&KeyboardCtrl.KeyboardEvent);
        }
        if(Uart1RxBufferCheck()!=BUFFER_EMPTY){
            OsEventUp(&Uart1Ctrl.Uart1Event);
        }
        if(Uart2Ctrl.HasData==true){
            //GuiStringPrint("\nCOM2 EVENT UP");
            OsEventUp(&Uart2Ctrl.Uart2Event);
        }
        if((RtcCtrl.HasUpdate==true)||(RtcCtrl.HasPeriodic==true)){
            //GuiStringPrint("\nRTC EVENT UP");
            OsEventUp(&RtcCtrl.RtcEvent);
        }
        if(OsHasIntNesting==OS_TRUE){
            OsHasIntNesting=OS_FALSE;
            //GuiPrintString("\nsee nesting interrupt.");
        }
        OsYield();
    }
}

---