关于 CC2540 Mini DK BLE 广播时间设置的问题

Wayen Weng

Prodigy 60 points

Other Parts Discussed in Thread: CC2540

您好！

最近在熟悉 CC2540 BLE 的开发平台，手里的硬件是 CC2540 Mini DK 的板子，在学习 BLE KeyFob 例程代码的过程遇到如下问题。

例程的 peripheral.c 文件中，BLE 广播结束的时间设定为 30 秒，文件定义为：#define DEFAULT_ADVERT_OFF_TIME 30000 // 30 seconds

但本人测试了一下， BLE 广播结束的时间实际为 3 分钟，试着改变该参数的数值，但是 BLE 广播结束的时间一直不变。

不知是本人哪里理解错了还是遗漏了什么，请各位帮忙回答一下这个问题。

也请各位指点一下，广播时间间隔设定在代码的那个位置？根据这个 http://www.deyisupport.com/question_answer/analog/wireless_connectivity/f/45/t/22810.aspx

的方法设定后， CC2540 Mini DK 板子上电 1 秒指示灯亮是 OK 的，但按下广播按键后，发现连广播指示灯不闪烁了，用 SmartRF Packet Sniffer 监听无广播包。

不知是否还要设定其它的地方？

非常感谢！

10 年多前

0 Jerry 10 年多前

TI__Intellectual 770 points

In keyfob code, the gapRole_AdvertOffTime is set to 0 in KeyFobApp_Init();

GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );

While Keyfob is set in limited discoverable mode

#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_LIMITED

which will stop advertising after 180s by the following parameter

#define TGAP_LIM_ADV_TIMEOUT 1 //!< Maximum time to remain advertising, when in Limited Discoverable mode. In seconds (default 180 seconds)

you can change by :

GAP_SetParamValue( TGAP_LIM_ADV_TIMEOUT, xxxxx );

In KeyFobApp_Init(); you will find code for setting the advertising interval

// Set advertising interval
{
uint16 advInt = DEFAULT_ADVERTISING_INTERVAL;

    GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MAX, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MAX, advInt );
}

LED will turn off during sleep. the chip will go to sleep between advertising.

please find func HalLedEnterSleep( ) and HalLedExitSleep()and in file hal_led.c

0 bai 10 年多前回复 Jerry

Prodigy 110 points

Hi,jerry.

在cc2540的keyfobdemo.c代码里面，我可以看到的对我的DEFAULT_DISCOVERABLE_MODE的操作只有如下

#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_GENERAL

static uint8 advertData[] =
{
0x02, // length of first data structure (2 bytes excluding length byte)
GAP_ADTYPE_FLAGS, // AD Type = Flags
DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

// service UUID, to notify central devices what services are included
// in this peripheral
0x07, // length of second data structure (7 bytes excluding length byte)
GAP_ADTYPE_16BIT_MORE, // list of 16-bit UUID's available, but not complete list
LO_UINT16( LINK_LOSS_SERVICE_UUID ), // Link Loss Service (Proximity Profile)
HI_UINT16( LINK_LOSS_SERVICE_UUID ),
LO_UINT16( IMMEDIATE_ALERT_SERVICE_UUID ), // Immediate Alert Service (Proximity / Find Me Profile)
HI_UINT16( IMMEDIATE_ALERT_SERVICE_UUID ),
LO_UINT16( TX_PWR_LEVEL_SERVICE_UUID ), // Tx Power Level Service (Proximity Profile)
HI_UINT16( TX_PWR_LEVEL_SERVICE_UUID )
};

那么实际上cc2540是在哪里设定了是GAP_ADTYPE_FLAGS_GENERAL还是GAP_ADTYPE_FLAGS_LIMITED

我始终没有在程序中找到相关的语句

比如可以改变interval的语句

if( period_advertising_flag == 1 )
{
uint16 advInt=160;//DEFAULT_ADVERTISING_INTERVAL; //160 equals 100ms interval
GAP_SetParamValue(TGAP_LIM_DISC_ADV_INT_MIN,advInt);
GAP_SetParamValue(TGAP_GEN_DISC_ADV_INT_MIN,advInt);
GAP_SetParamValue(TGAP_LIM_DISC_ADV_INT_MAX,advInt);
GAP_SetParamValue(TGAP_GEN_DISC_ADV_INT_MAX,advInt);
}

希望得到解答

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关于 CC2540 Mini DK BLE 广播时间设置的问题