CC2541 突然停止广播

peng zhou6

Other Parts Discussed in Thread: CC2541, CC2540

使用CC2541, advertising的配置如下：

uint16 gapRole_AdvertOffTime = 5000;

uint8 enable_update_request = DEFAULT_ENABLE_UPDATE_REQUEST;
uint16 desired_min_interval = DEFAULT_DESIRED_MIN_CONN_INTERVAL;
uint16 desired_max_interval = DEFAULT_DESIRED_MAX_CONN_INTERVAL;
uint16 desired_slave_latency = DEFAULT_DESIRED_SLAVE_LATENCY;
uint16 desired_conn_timeout = DEFAULT_DESIRED_CONN_TIMEOUT;

// Set the GAP Role Parameters
GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable );
GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );

GAPRole_SetParameter( GAPROLE_SCAN_RSP_DATA, sizeof ( scanRspData ), scanRspData );
GAPRole_SetParameter( GAPROLE_ADVERT_DATA, sizeof( advertData ), advertData );

GAPRole_SetParameter( GAPROLE_PARAM_UPDATE_ENABLE, sizeof( uint8 ), &enable_update_request );
GAPRole_SetParameter( GAPROLE_MIN_CONN_INTERVAL, sizeof( uint16 ), &desired_min_interval );
GAPRole_SetParameter( GAPROLE_MAX_CONN_INTERVAL, sizeof( uint16 ), &desired_max_interval );
GAPRole_SetParameter( GAPROLE_SLAVE_LATENCY, sizeof( uint16 ), &desired_slave_latency );
GAPRole_SetParameter( GAPROLE_TIMEOUT_MULTIPLIER, sizeof( uint16 ), &desired_conn_timeout );

initial_advertising_enable = TRUE;
GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable );

发现经常出现广播突然停止的情况，用手机再也搜索不到设备了，有时候开机30秒-5分钟之后，设备就丢了。

反复开关设备几次，比较容易复现，

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9 年多前

0 wenzhong shen 9 年多前

Genius 3073 points

你的问题我遇到过。

keyfob的例程是按键触发广播，广播时间为30.72s，超时则不再广播。这是为了省电，相关的设置是通过

1.声明成受限制的广播

// Limited discoverable mode advertises for 30.72s, and then stops
// General discoverable mode advertises indefinitely

#if defined ( CC2540_MINIDK ) // 受限制的广播和普通广播
#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_LIMITED
#else
#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_GENERAL
#endif // defined ( CC2540_MINIDK )

// Advertisement data 广播数据
static uint8 advertData[] =
{
0x02, // length of this data
GAP_ADTYPE_FLAGS,// 改为无限广播模式
DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

// service UUID
0x03, // length of this data
GAP_ADTYPE_16BIT_MORE,
LO_UINT16( SIMPLEPROFILE_SERV_UUID ),
HI_UINT16( SIMPLEPROFILE_SERV_UUID ),

};

2. 设置广播关闭时间为30.72s

// By setting this to zero, the device will go into the waiting state after
// being discoverable for 30.72 second, and will not being advertising again
// until the enabler is set back to TRUE
uint16 gapRole_AdvertOffTime = 0;

如果你想修改的话，声明成普通广播，并将GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );这句话去掉就可以了