我用CH573跑藍牙主機程序，現(xiàn)在能找到并連接從機設(shè)備，但是無法接收來自從機的透傳數(shù)據(jù)，想請假大家，是不是因為主機程序中沒有使能CCCD，所以接收不到notify。如果是的話，主機程序中該如何使能CCCD。

下面圖片是串口輸出的一些信息。

藍牙連上后,一般來說 要先進行服務(wù)和特征發(fā)現(xiàn),

拿到對應(yīng)uuid 對應(yīng)的handle,

然后根據(jù)handle去操作,諸如使能cccd,和讀寫數(shù)據(jù)

如下面是一個發(fā)現(xiàn)服務(wù),發(fā)現(xiàn)char 和獲取cccd 對應(yīng)的handle的api:

void?central_db_dis_process(void){
????uint8_t?result?=?0;
????attReadByTypeReq_t?req;
????switch(ble_db_dis_state){
????????case?BLE_DISC_STATE_IDLE:
????????????break;
????????case?BLE_DISC_STATE_SVC:
????????????result?=?GATT_DiscPrimaryServiceByUUID(?centralConnHandle,
????????????????????????????service_uuid,
?????????????????????????????16,
?????????????????????????????centralTaskId?);?
????????????PRINT("GATT_DiscPrimaryServiceByUUID:%x\r\n",result);
????????????break;
????????case?BLE_DISC_STATE_CHAR:
????????????result?=?GATT_DiscAllChars(centralConnHandle,centralSvcStartHdl,centralSvcEndHdl,centralTaskId);
????????????break;
????????case?BLE_DISC_STATE_CCCD:
????????????req.startHandle?=?centralSvcStartHdl;
????????????req.endHandle?=?centralSvcEndHdl;
????????????req.type.len?=?ATT_BT_UUID_SIZE;
????????????req.type.uuid[0]?=?LO_UINT16(GATT_CLIENT_CHAR_CFG_UUID);
????????????req.type.uuid[1]?=?HI_UINT16(GATT_CLIENT_CHAR_CFG_UUID);
????????????result?=?GATT_ReadUsingCharUUID(?centralConnHandle,?&req,?centralTaskId?);
????????????break;
????????default:
????????????break;
????}
????if(result?!=?SUCCESS){
????????if(centralConnHandle?!=?BLE_STATE_IDLE){
????????????tmos_start_task(centralTaskId,START_SVC_DISCOVERY_EVT,1600);
????????}else{
????????????PRINT("conntection?has?been?disconnected\r\n");
????????}
????}
}

其中處理函數(shù)為:

/*********************************************************************
?*?@fn??????centralGATTDiscoveryEvent
?*
?*?@brief???Process?GATT?discovery?event
?*
?*?@return??none
?*/
static?void?centralGATTDiscoveryEvent(?gattMsgEvent_t?*pMsg?){
????PRINT("centralGATTDiscoveryEvent\r\n");
????switch(ble_db_dis_state){
????????case?BLE_DISC_STATE_SVC:

????????????//?Service?found,?store?handles
????????????if?(?pMsg->method?==?ATT_FIND_BY_TYPE_VALUE_RSP?){
????????????????if(?pMsg->msg.findByTypeValueRsp.numInfo?>?0?){
????????????????????centralSvcStartHdl?=?ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo,0);
????????????????????centralSvcEndHdl?=?ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo,0);
????????????????????//?Display?Profile?Service?handle?range
????????????????????PRINT("Found?Profile?Service?handle?:?%x?~?%x?\n",centralSvcStartHdl,centralSvcEndHdl);
????????????????}
????????????????if(?(?pMsg->hdr.status?==?bleProcedureComplete?)||(?pMsg->method?==?ATT_ERROR_RSP?)?)?{
??????????????????????if?(?centralSvcStartHdl?!=?0?){
??????????????????????????central_db_dis_change_state(BLE_DISC_STATE_CHAR);
??????????????????????}
????????????????}
????????????}??????????????
????????????break;
????????case?BLE_DISC_STATE_CHAR:
????????????//?Characteristic?found,?store?handle
????????????if?(?pMsg->method?==?ATT_READ_BY_TYPE_RSP?){
????????????????if(pMsg->msg.readByTypeRsp.numPairs?>?0?){
????????????????????for(unsigned?char?i?=?0;?i?<?pMsg->msg.readByTypeRsp.numPairs?;?i++){
#if?0????????????????????????
????????????????????????????//characteristic?properties
????????????????????????????uint8_t?char_properties?=?pMsg->msg.readByTypeRsp.pDataList[pMsg->msg.readByTypeRsp.len?*?i?+?2];
#endif????????????????????????????
????????????????????????????uint16_t?char_value_handle?=?BUILD_UINT16(pMsg->msg.readByTypeRsp.pDataList[pMsg->msg.readByTypeRsp.len?*?i+3],?\
????????????????????????????????????????????????????????????pMsg->msg.readByTypeRsp.pDataList[pMsg->msg.readByTypeRsp.len?*?i?+?4]);
????????????????????????????//characteristic?uuid?length
????????????????????????????uint8_t?char_uuid_length?=?pMsg->msg.readByGrpTypeRsp.len?-?5;
????????????????????????????
????????????????????????????//uuid
????????????????????????????uint8_t?*chat_uuid?=?&(pMsg->msg.readByGrpTypeRsp.pDataList[pMsg->msg.readByGrpTypeRsp.len?*?i?+?5]);??????????????????????????
????????????????????????????if(sizeof(write_uuid)?==?char_uuid_length){
????????????????????????????????if(tmos_memcmp(write_uuid,chat_uuid,char_uuid_length)){
????????????????????????????????????PRINT("write_uuid?found,handle:%02x\r\n",char_value_handle);
????????????????????????????????}else?if(tmos_memcmp(notify_uuid,chat_uuid,char_uuid_length)){
????????????????????????????????????PRINT("notify?uuid?found,handle:%02x\r\n",char_value_handle);
????????????????????????????????}
????????????????????????????}
????????????????????}
????????????????}
????????????????if((pMsg->hdr.status?==?bleProcedureComplete?)?||?(?pMsg->method?==?ATT_ERROR_RSP?)?)?{
????????????????????central_db_dis_change_state(BLE_DISC_STATE_CCCD);
????????????????????PRINT("BLE_DISC_STATE_CHAR?done\r\n");
????????????????}
????????????}??
????????????break;
??????case?BLE_DISC_STATE_CCCD:
????????if?(?pMsg->method?==?ATT_READ_BY_TYPE_RSP)?{
????????????if(pMsg->msg.readByTypeRsp.numPairs?>?0?)?{
????????????????centralCCCDHdl?=?BUILD_UINT16(?pMsg->msg.readByTypeRsp.pDataList[0],
?????????????????????????????????????????????pMsg->msg.readByTypeRsp.pDataList[1]?);

????????????????PRINT("Found?client?characteristic?configuration?handle?:?%x?\n",centralCCCDHdl);
????????????????central_enbale_notify(centralConnHandle,centralCCCDHdl);
????????????}
????????????ble_db_dis_state?=?BLE_DISC_STATE_IDLE;
????????}?
????????break;
??????default:
????????????break;
????}
}

然后enable notify 可以是:

uint8_t?central_gatt_write_char_value(uint16_t?connection_handle,uint16_t?char_handle,uint8_t?*data,uint16_t?length){
????uint8_t?result;
????attWriteReq_t?req;
?
????req.cmd?=?FALSE;
????req.sig?=?FALSE;
????req.handle?=?char_handle;
????req.len?=?length;
????req.pValue?=?GATT_bm_alloc(connection_handle,ATT_WRITE_REQ,req.len,NULL,0);
????if?(?req.pValue?!=?NULL?){
????????tmos_memcpy(req.pValue,data,length);?
????????result?=?GATT_WriteCharValue(centralConnHandle,&req,centralTaskId);
????????if(SUCCESS?==?result){
????????????return?SUCCESS;
????????}else{
????????????GATT_bm_free((gattMsg_t?*)&req,?ATT_WRITE_REQ);
????????????write_data_when_failed.connection_handle?=?connection_handle;
????????????write_data_when_failed.char_handle?=?char_handle;
????????????write_data_when_failed.data_length?=?length;
????????????tmos_memcpy(write_data_when_failed.data,data,write_data_when_failed.data_length);
????????????PRINT("data0?data1=%02x?%02x?\r\n",write_data_when_failed.data[0],write_data_when_failed.data[1]);
????????????tmos_start_task(centralTaskId,START_WRITE_EVT,80);
????????????return?result;
????????}
????}
????return?0xff;
}


uint8_t?central_enbale_notify(uint16_t?connection_handle,uint16_t?notify_handle){
????uint8_t?data[2]?=?{0x01,0x00};
????return?central_gatt_write_char_value(connection_handle,notify_handle,data,2);?
}

uint8_t?central_disable_notify(uint16_t?connection_handle,uint16_t?notify_handle){
????uint8_t?data[2]?=?{0x00,0x00};
????return?central_gatt_write_char_value(connection_handle,notify_handle,data,2);?
}

你好，請問這個問題解決了嗎？我用主機程序或者主從一體的程序，也是出現(xiàn)這個問題。

@TECH46,上傳代碼是哪個例程里面的，可以發(fā)給我么，個人信息保護，已隱藏謝謝！

已發(fā)送至郵箱，請查收。