- value = GATTServApp_ReadCharCfg( connHandle, simpleProfileChar6Config );//读出CCC的值
- if ( value & GATT_CLIENT_CFG_NOTIFY ) //判断是否打开通知开关,打开了则发送数据
- {
- noti.handle = simpleProfileAttrTbl[ATTRTBL_CHAR6_IDX].handle;
- noti.len = len;
- osal_memcpy( noti.value, pValue, len); //数据
- GATT_Notification( connHandle, ¬i, FALSE );
- }
CCC是指Client Characteristic Configuration 的这个descriptor.
下面是个例子:
attWriteReq_t writeReq;
writeReq.handle = 0x002f;
writeReq.len = 2;
writeReq.value[0] = LO_UINT16(GATT_CLIENT_CFG_NOTIFY); // 0x01 【1:开启Notification 0:关闭Notify】
writeReq.value[1] = HI_UINT16(GATT_CLIENT_CFG_NOTIFY); // 0x00 【1:开启Indification 0:关闭Indi】
writeReq.sig = 0;
writeReq.cmd = 0;
GATT_WriteCharValue( simpleBLEConnHandle, &writeReq, simpleBLETaskId );
static void simpleBLECentralProcessGATTMsg( gattMsgEvent_t *pMsg )所有通过蓝牙发送的数据都会让GATT这个函数来处理.因此,发送的数据就到这里了。gattMsgEvent_t是个很大的联合体代码中都有注释,只要找到相应的结构体就行了。
typedef union
{
// Request messages
attExchangeMTUReq_t exchangeMTUReq; //!< ATT Exchange MTU Request
attFindInfoReq_t findInfoReq; //!< ATT Find Information Request
attFindByTypeValueReq_t findByTypeValueReq; //!< ATT Find By Type Vaue Request
attReadByTypeReq_t readByTypeReq; //!< ATT Read By Type Request
attReadReq_t readReq; //!< ATT Read Request
attReadBlobReq_t readBlobReq; //!< ATT Read Blob Request
attReadMultiReq_t readMultiReq; //!< ATT Read Multiple Request
attReadByGrpTypeReq_t readByGrpTypeReq; //!< ATT Read By Group Type Request
attWriteReq_t writeReq; //!< ATT Write Request
attPrepareWriteReq_t prepareWriteReq; //!< ATT Prepare Write Request
attExecuteWriteReq_t executeWriteReq; //!< ATT Execute Write Request
gattReadByTypeReq_t gattReadByTypeReq; //!< GATT Read By Type Request
gattWriteLongReq_t gattWriteLongReq; //!< GATT Long Write Request
gattReliableWritesReq_t gattReliableWritesReq; //!< GATT Reliable Writes Request
// Response messages
attErrorRsp_t errorRsp; //!< ATT Error Response
attExchangeMTURsp_t exchangeMTURsp; //!< ATT Exchange MTU Response