headset_scan.c

bluelab的一个很好的例程

/****************************************************************************
Copyright (C) Cambridge Silicon Radio Ltd. 2005

FILE NAME
    headset_scan.c

DESCRIPTION
    

NOTES

*/


/****************************************************************************
    Header files
*/
#include "headset_private.h"
#include "headset_scan.h"

#include <connection.h>
#include <hfp.h>


/****************************************************************************
NAME    
    headsetEnableConnectable
    
DESCRIPTION
    Make the device connectable 

RETURNS
    void
*/
void headsetEnableConnectable(hsTaskData *app)
{
    hci_scan_enable scan = hci_scan_enable_off;

    /* Set the page scan params */
    ConnectionWritePagescanActivity(app->radio.page_scan_interval, app->radio.page_scan_window);

    /* Make sure that if we're inquiry scanning we don't disable it */
    if (app->inquiry_scan_enabled)
        scan = hci_scan_enable_inq_and_page;
    else
        scan = hci_scan_enable_page;

    /* Enable scan mode */
    ConnectionWriteScanEnable(scan);

    /* Set the flag to indicate we're page scanning */
    app->page_scan_enabled = 1;
}


/****************************************************************************
NAME    
    headsetDisableConnectable
    
DESCRIPTION
    Take device out of connectable mode.

RETURNS
    void
*/
void headsetDisableConnectable(hsTaskData *app)
{
    hci_scan_enable scan;

    /* Make sure that if we're inquiry scanning we don't disable it */
    if (app->inquiry_scan_enabled)
        scan = hci_scan_enable_inq;
    else
        scan = hci_scan_enable_off;

    /* Enable scan mode */
    ConnectionWriteScanEnable(scan);

    /* Set the flag to indicate we're page scanning */
    app->page_scan_enabled = 0;
}


/****************************************************************************
NAME    
    headsetEnableDiscoverable
    
DESCRIPTION
    Make the device discoverable. 

RETURNS
    void
*/
void headsetEnableDiscoverable(hsTaskData *app)
{
    hci_scan_enable scan = hci_scan_enable_off;

    /* Set the inquiry scan params */
    ConnectionWriteInquiryscanActivity(app->radio.inquiry_scan_interval, app->radio.inquiry_scan_window);

    /* Make sure that if we're page scanning we don't disable it */
    if (app->page_scan_enabled)
        scan = hci_scan_enable_inq_and_page;
    else
        scan = hci_scan_enable_inq;

    /* Enable scan mode */
    ConnectionWriteScanEnable(scan);

    /* Set the flag to indicate we're page scanning */
    app->inquiry_scan_enabled = 1;
}


/****************************************************************************
NAME    
    headsetDisableDiscoverable
    
DESCRIPTION
    Make the device non-discoverable. 

RETURNS
    void
*/
void headsetDisableDiscoverable(hsTaskData *app)
{
    hci_scan_enable scan;
    
    /* Make sure that if we're page scanning we don't disable it */
    if (app->page_scan_enabled)
        scan = hci_scan_enable_page;
    else
        scan = hci_scan_enable_off;

    /* Enable scan mode */
    ConnectionWriteScanEnable(scan);

    /* Set the flag to indicate we're page scanning */
    app->inquiry_scan_enabled = 0;
}