gui_x_ucos-ii.c

移植到freescale 9s12系列单片机的uCOSII

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
* File    : GUI_X_uCOS-II.C
*********************************************************************************************************
*/

#include <ucos_ii.h>
#include "GUI_Private.H"
#include "stdio.H"

/*
*********************************************************************************************************
*                                         GLOBAL VARIABLES
*********************************************************************************************************
*/

static  OS_EVENT  *DispSem;
static  OS_EVENT  *EventMbox;

static  OS_EVENT  *KeySem;
static  int        KeyPressed;
static  char       KeyIsInited;


/*
*********************************************************************************************************
*                                        TIMING FUNCTIONS
*
* Notes: Some timing dependent routines of uC/GUI require a GetTime and delay funtion.
*        Default time unit (tick), normally is 1 ms.
*********************************************************************************************************
*/

int  GUI_X_GetTime (void)
{
    return ((int)OSTimeGet());
}


void  GUI_X_Delay (int period)
{
    INT32U  ticks;


    ticks = (period * 1000) / OS_TICKS_PER_SEC;
    if (ticks == 0) {
        OSTimeDly(1);
    } else {
        OSTimeDly((INT16U)ticks);
    }
}


/*
*********************************************************************************************************
*                                          GUI_X_ExecIdle()
*********************************************************************************************************
*/
void GUI_X_ExecIdle (void)
{
    GUI_X_Delay(1);
}


/*
*********************************************************************************************************
*                                    MULTITASKING INTERFACE FUNCTIONS
*
* Note(1): 1) The following routines are required only if uC/GUI is used in a true multi task environment,
*             which means you have more than one thread using the uC/GUI API.  In this case the #define
*             GUI_OS 1   needs to be in GUIConf.h
*********************************************************************************************************
*/

void  GUI_X_InitOS (void)
{
    DispSem   = OSSemCreate(1);
    EventMbox = OSMboxCreate((void *)0);
}


void  GUI_X_Lock (void)
{
    INT8U  err;


    OSSemPend(DispSem, 0, &err);
}


void  GUI_X_Unlock (void)
{
    OSSemPost(DispSem);
}


U32  GUI_X_GetTaskId (void)
{
    return ((U32)(OSTCBCur->OSTCBPrio));
}

/*
*********************************************************************************************************
*                                        GUI_X_WaitEvent()
*                                        GUI_X_SignalEvent()
*********************************************************************************************************
*/


void GUI_X_WaitEvent (void)
{
    INT8U  err;


    (void)OSMboxPend(EventMbox, 0, &err);
}


void GUI_X_SignalEvent (void)
{
    (void)OSMboxPost(EventMbox, (void *)1);
}

/*
*********************************************************************************************************
*                                      KEYBOARD INTERFACE FUNCTIONS
*
* Purpose: The keyboard routines are required only by some widgets.
*          If widgets are not used, they may be eliminated.
*
* Note(s): If uC/OS-II is used, characters typed into the log window will be placed	in the keyboard buffer.
*          This is a neat feature which allows you to operate your target system without having to use or
*          even to have a keyboard connected to it. (useful for demos !)
*********************************************************************************************************
*/

static  void  CheckInit (void)
{
    if (KeyIsInited == OS_FALSE) {
        KeyIsInited = OS_TRUE;
        GUI_X_Init();
    }
}


void GUI_X_Init (void)
{
    KeySem = OSSemCreate(0);
}


int  GUI_X_GetKey (void)
{
    int r;


    r          = KeyPressed;
    CheckInit();
    KeyPressed = 0;
    return (r);
}


int  GUI_X_WaitKey (void)
{
    int    r;
    INT8U  err;


    CheckInit();
    if (KeyPressed == 0) {
        OSSemPend(KeySem, 0, &err);
    }
    r          = KeyPressed;
    KeyPressed = 0;
    return (r);
}


void  GUI_X_StoreKey (int k)
{
    KeyPressed = k;
    OSSemPost(KeySem);
}