基于CH573蓝牙的实时修改广播内容

在沁恒ch573作为从机的时候，可以根据自己的喜好修改一些特定的广播内容，例如原厂信息之类的，在初始化的时候用的

`// GAP - SCAN RSP data (max size = 31 bytes) static uint8_t scanRspData[] = { // complete name 0x12, // length of this data GAP_ADTYPE_LOCAL_NAME_COMPLETE, 't', 'e', 's', 't', '-', '1', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // connection interval range
0x05, // length of this data
GAP_ADTYPE_SLAVE_CONN_INTERVAL_RANGE,
LO_UINT16(DEFAULT_DESIRED_MIN_CONN_INTERVAL), // 100ms
HI_UINT16(DEFAULT_DESIRED_MIN_CONN_INTERVAL),
LO_UINT16(DEFAULT_DESIRED_MAX_CONN_INTERVAL), // 1s
HI_UINT16(DEFAULT_DESIRED_MAX_CONN_INTERVAL),

//    // Tx power level
//    0x02, // length of this data
//    GAP_ADTYPE_POWER_LEVEL,
//    0 // 0dBm
0X05,
GAP_ADTYPE_MANUFACTURER_SPECIFIC,
0XFF,
0XFF,
0XFF,
0XFF
};

这些SCAN RSP data数据作为修改项进行改动，调用函数

GAP_UpdateAdvertisingData( 0,FALSE ,sizeof( scanRspData ),scanRspData );// false代表rsp数据，true代表adv数据

可初始化rsp数据有很多可以做为广播的数据，例如

// GAP_ADTYPE_DEFINES GAP Advertisement Data Types
#define GAP_ADTYPE_FLAGS                        0x01 //!< Discovery Mode: [url=home.php?mod=space&uid=1352397]@ref[/url] GAP_ADTYPE_FLAGS_MODES
#define GAP_ADTYPE_16BIT_MORE                   0x02 //!< Service: More 16-bit UUIDs available
#define GAP_ADTYPE_16BIT_COMPLETE               0x03 //!< Service: Complete list of 16-bit UUIDs
#define GAP_ADTYPE_32BIT_MORE                   0x04 //!< Service: More 32-bit UUIDs available
#define GAP_ADTYPE_32BIT_COMPLETE               0x05 //!< Service: Complete list of 32-bit UUIDs
#define GAP_ADTYPE_128BIT_MORE                  0x06 //!< Service: More 128-bit UUIDs available
#define GAP_ADTYPE_128BIT_COMPLETE              0x07 //!< Service: Complete list of 128-bit UUIDs
#define GAP_ADTYPE_LOCAL_NAME_SHORT             0x08 //!< Shortened local name
#define GAP_ADTYPE_LOCAL_NAME_COMPLETE          0x09 //!< Complete local name
#define GAP_ADTYPE_POWER_LEVEL                  0x0A //!< TX Power Level: -127 to +127 dBm
#define GAP_ADTYPE_OOB_CLASS_OF_DEVICE          0x0D //!< Simple Pairing OOB Tag: Class of device (3 octets)
#define GAP_ADTYPE_OOB_SIMPLE_PAIRING_HASHC     0x0E //!< Simple Pairing OOB Tag: Simple Pairing Hash C (16 octets)
#define GAP_ADTYPE_OOB_SIMPLE_PAIRING_RANDR     0x0F //!< Simple Pairing OOB Tag: Simple Pairing Randomizer R (16 octets)
#define GAP_ADTYPE_SM_TK                        0x10 //!< Security Manager TK Value
#define GAP_ADTYPE_SM_OOB_FLAG                  0x11 //!< Security Manager OOB Flags
#define GAP_ADTYPE_SLAVE_CONN_INTERVAL_RANGE    0x12 //!< Min and Max values of the connection interval (2 octets Min, 2 octets Max) (0xFFFF indicates no conn interval min or max)
#define GAP_ADTYPE_SIGNED_DATA                  0x13 //!< Signed Data field
#define GAP_ADTYPE_SERVICES_LIST_16BIT          0x14 //!< Service Solicitation: list of 16-bit Service UUIDs
#define GAP_ADTYPE_SERVICES_LIST_128BIT         0x15 //!< Service Solicitation: list of 128-bit Service UUIDs
#define GAP_ADTYPE_SERVICE_DATA                 0x16 //!< Service Data - 16-bit UUID
#define GAP_ADTYPE_PUBLIC_TARGET_ADDR           0x17 //!< Public Target Address
#define GAP_ADTYPE_RANDOM_TARGET_ADDR           0x18 //!< Random Target Address
#define GAP_ADTYPE_APPEARANCE                   0x19 //!< Appearance
#define GAP_ADTYPE_ADV_INTERVAL                 0x1A //!< Advertising Interval
#define GAP_ADTYPE_LE_BD_ADDR                   0x1B //!< LE Bluetooth Device Address
#define GAP_ADTYPE_LE_ROLE                      0x1C //!< LE Role
#define GAP_ADTYPE_SIMPLE_PAIRING_HASHC_256     0x1D //!< Simple Pairing Hash C-256
#define GAP_ADTYPE_SIMPLE_PAIRING_RANDR_256     0x1E //!< Simple Pairing Randomizer R-256
#define GAP_ADTYPE_SERVICE_DATA_32BIT           0x20 //!< Service Data - 32-bit UUID
#define GAP_ADTYPE_SERVICE_DATA_128BIT          0x21 //!< Service Data - 128-bit UUID
#define GAP_ADTYPE_3D_INFO_DATA                 0x3D //!< 3D Information Data
#define GAP_ADTYPE_MANUFACTURER_SPECIFIC        0xFF //!< Manufacturer Specific Data: first 2 octets contain the Company Identifier Code followed by the additional manufacturer specific data

还可以改变adv的数据，

// GAP - Advertisement data (max size = 31 bytes, though this is
// best kept short to conserve power while advertising)
static uint8_t advertData[] = {
    // Flags; this sets the device to use limited discoverable
    // mode (advertises for 30 seconds at a time) instead of general
    // discoverable mode (advertises indefinitely)
    0x02, // length of this data
    GAP_ADTYPE_FLAGS,
    DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

    // service UUID, to notify central devices what services are included
    // in this peripheral
    0x03,                  // length of this data
    GAP_ADTYPE_16BIT_MORE, // some of the UUID's, but not all
    LO_UINT16(SIMPLEPROFILE_SERV_UUID),
    HI_UINT16(SIMPLEPROFILE_SERV_UUID)
};

GAP_UpdateAdvertisingData( 0,TRUE,sizeof( advertData),advertData);// false代表rsp数据，true代表adv数据

只要把相应的数组数据改变，再更新到广播就可以了，后续如果要做保存，可以保存到flash内，在初始化后调用即可