hid_mouse_led.c

蓝牙鼠标的例程

/****************************************************************************
Copyright (C) Cambridge Silicon Radio Ltd. 2005-2006
Part of BlueLab 3.5.2-release

FILE NAME
    hid_mouse_led.c        
DESCRIPTION
    This file contains the LED control task.
NOTES

*/

/****************************************************************************
    Header files
*/
#include "hid_mouse.h"
#include <pio.h>
#include <vm.h>

/* Internal messages */
enum
{
    LED_INTERNAL_UPDATE
};


static void appLedHandleInternalUpdate(appLedTaskData *theLed)
{
    if (theLed->onPeriod < 0)
#ifdef HW_DEV_1409
		theLed->state = 0xFF;
#else
        theLed->state = LED_PIO_MASK;		
#endif
	else if (theLed->offPeriod < 0)
        theLed->state = 0;
    else
#ifdef HW_DEV_1409
		theLed->state ^= 0xFF;
#else
        theLed->state ^= LED_PIO_MASK;
#endif
  
#ifdef HW_DEV_1409
	PioSetAuxDac(1, theLed->state);
#else
	PioSet(LED_PIO_MASK, theLed->state);
#endif
    
    if (theLed->state)
    {
#ifdef HW_DEV_1409
        VmDeepSleepEnable(FALSE);
#endif
        if (theLed->onPeriod > 0)
            MessageSendLater(&theLed->task, LED_INTERNAL_UPDATE, 0, theLed->onPeriod);
    }
    else
    {
#ifdef HW_DEV_1409
        VmDeepSleepEnable(TRUE);
#endif
        if (theLed->offPeriod > 0)
            MessageSendLater(&theLed->task, LED_INTERNAL_UPDATE, 0, theLed->offPeriod);
    }            
}

static void appLedHandler(Task task, MessageId id, Message message)
{
    if (id == LED_INTERNAL_UPDATE)
        appLedHandleInternalUpdate((appLedTaskData *)task);
}

void appLedInit(appLedTaskData *theLed)
{
    theLed->task.handler = appLedHandler;
    theLed->state = 0;
    theLed->priority = -1;   
}

void appLedUpdate(appLedTaskData *theLed, int onPeriod, int offPeriod, uint8 priority)
{
    theLed->onPeriodTable[priority] = onPeriod;
    theLed->offPeriodTable[priority] = offPeriod;
    
    appLedSetPriority(theLed, priority);
}

void appLedSetPriority(appLedTaskData *theLed, uint8 priority)
{
    theLed->onPeriod = theLed->onPeriodTable[priority];
    theLed->offPeriod = theLed->offPeriodTable[priority];
    theLed->priority = priority;
        
    /* Cancel LED update message */
    MessageCancelAll(&theLed->task, LED_INTERNAL_UPDATE);
       
    /* Post update message to LED task */
    MessageSend(&theLed->task, LED_INTERNAL_UPDATE, 0);
}