思路：要获得cell id,可以通过发送 MSG_ID_MMI_EM_UPDATE_REQ来获得网络回来的消息为MSE_ID_MMI_EM_UPDATE_RSP,MSG_ID_MMI_EM_STATUS_ID.可以自行实现这两个消息的处理函数处理的函数 mmi_em_update_rsp_hdlr 处理请求是否成功。如果不影响原来的工程模式处理可以使用EnginerrModeStartRes mmi_em_status_ind 处理返回来的所有信息。要想停止 MSG_ID_MMI_EM_STATUS_IND消息，可以在次发送MSG_ID_MMI_EM_UPDATE_REQ,并将update_req->info_request全部置为EM_OFF.
基站定位：cell_id unique identifier of the cell (cid for gsm ,bid for cdma)location_area_code location area code (lac for gsm ,nid for cdma) 位置区号mobile_country_code mobile country code (mcc for gsm and cdma) 移动国家码mobile_network_code mobile network code (mnc for gsm,sid for cdma) 移动网络码age the number of milliseconds since this cell was primary,if age is 0,the cell_id represents a current measurementsignal_strength radio signal strength mearsured in dbmtiming_advance represents the distance from the cell tower.each unit is roughly 550 meters///其他需要调用基站定位数据地方，可以通过注册一个回调函数来得到相应的基站信息例如：
1.cagps_reg_valid_cb(cagps_greg_send_agps); cagps_open();2.cagps_unreg_valid_cb(cagps_gred_send_agps); cagps_close(); typedef struct{ WORD cell_id; WORD location_area_code; WORD mobile_country_code; WORD mobile_network_code; WORD age; S16 signal_strength; WORD timing_advance;}AGPSDataStruct;typedef enum{ AI_NULL = 0x00; AI_LAI = 0x01; AI_MR = 0x02; AI_ALL = 0x03}AGPS_ITEM;///基站定位数据回调typedef void (*cagps_set_agpsdata_cb)(const AGPSDataStruct *p_agpsdata);typedef struct{ BOOL bt_open; AGPSDataStruct agpsdata; AGPS_ITEM ai_item; cagps_set_agpsdata_cb set_agpsdata_cb[MAX_GPSM_MODULE_SIZE]; }AGPSParserStruct;static AGPSParserStruct gAGPSParser;
///启动基站定位的时候需要对其初始化///1.初始化参数的值，都设置为0.///2.设置ai_item的参数为AI_NULL表示为接收到基站的信息 AI_LAI AI_MR 表示接收到了LAI MR参数///3.设置消息映射函数。void cagps_init(void){ meset(&gAGPSParser,0,sizeof(AGPRSParserStruct)); gAGPSParser.ai_item = AI_NULL; cagps_setevent_handler();}///设置消息映射函数，当请求基站定位的时候会参数两个消息MSG_ID_MMI_EM_UPDATE_RSP和MSG_ID_MMI_EM_STATUS_IND///MSG_ID_MMI_EM_UPDATE_RSP 看是否请求成功。///MSG_ID_MMI_EM_STATUS_IND 对得到的数据进行处理。///[注]此处用的是mmi_frm_set_protocol_event_handler();void cagps_setevent_handler();{ //SetProtocolEventHandler(); mmi_frm_set_protocol_event_handler(cagps_update_rsp_hdlr,MSG_ID_MMI_EM_UPDATE_RSP,MMI_TRUE); mmi_frm_set_protocol_event_handler(cagps_status_ind_hdlr,MSG_ID_MMI_EM_STATUS_IND,MMI_TRUE);}///对MSG_ID_MMI_EM_UPDATE_RSP的处理static void cagps_update_rsp_hdlr(void *inMsg){ /*mmi_em_update_rsp_struct *rsp_p = (mmi_em_update_rsp_struct *)inMsg; if(rsp_p == NULL) { } if(rsp_p->result) { } else { }*/}///对MSG_ID_MMI_EM_STATUS_IND的处理/*typedef struct{ LOCAL_PARA_HDR kal_uint8 mod_id; kal_uint32 em_info; peer_buff_struct* info;} mmi_em_status_ind_struct;typedef struct{ kal_uint8 mcc[3]; //MCC kal_uint8 mnc[3]; //MNC kal_uint8 lac[2]; //LAC kal_uint16 cell_id; //cell ID kal_uint8 nc_info_index; // index in rlc array to acquire the corresponding arfcn, bsic, rxlevel...} rr_em_lai_info_struct;*/static void cagps_status_ind_hdlr(void *info){ mmi_em_status_ind_struct *msg = (mmi_em_status_ind_struct *)info; if(msg == NULL) { } /// 处理lai if(msg->em_info == RR_EM_LAI_INFO) { rr_em_lai_info_struct *data_ptr; U16 mm_pdu_len; data_ptr = (rr_em_lai_info_struct *)get_pdu_ptr(msg->info,&mm_pdu_len); cagps_parse_lai_info(data_ptr); } ///处理 MR if(msg->em_info == RR_EM_MEASUREMENT_REPORT_INFO) { rr_em_measurement_report_info_struct *data_ptr; U16 mm_pdu_len; data_ptr = (rr_em_measurement_report_info_struct *)get_pdu_ptr(msg->info,&mm_pud_len); cagps_parse_mr_info(data_ptr); } free_peer_buff(msg->info);}///解析得到的LAI数据static void cagps_parse_lai_info(const rr_em_lai_info_struct *data_ptr){ AGPSDataStruct *p_ckAGPSData = &gAGPSParser.agpsdata; p_ckAGPSData->cell_id = data_ptr->cell_id; if(data_ptr->cell_id == 0) { return; } ///lac memcpy(&p_ckAGPSData->location_area_code,data_ptr->lac,sizeof(WORD)); p_ckAGPSData->location_area_code = cmo_short_reverse((short)p_ckAGPSData->location_area_code); ///mcc p_ckAGPSData->mobile_country_code = data_ptr->mcc[0]*100 + data_ptr->mcc[1]*10 + data_ptr->mcc[2]; ///mnc if(data_ptr->mnc[2] != 0x0f) { p_ckAGPSData->mobile_network_code = data_ptr->mnc[0]*100 + data_ptr->mnc[1]*10 + data_ptr->mnc[2]; } else { p_ckAGPSData->mobile_network_code = data_ptr->mnc[0]*10 + data_ptr->mnc[1]; } gAGPSParser.ai_item | = AI_LAI; if(gAGPSParser.ai_item == AI_ALL) { cagps_excute_valid_cb(&gAGPSParser.agpsdata); cagps_reset(); }}///解析MR数据static void cagps_parse_mr_info(const rr_em_measurement_report_info_struct *data_ptr){ AGPSDataStruct *p_ckAGPSData = &gAGPSParser.agpsdata; ///ta if(data_ptr->timing_advance != 0xff) { p_ckAGPSData->timing_advance = data_ptr->timing_advance * 550; } ///RSSI p_ckAGPSData->signal_strength = data_ptr->serv_rla_in_quarter_dbm * 4; gAGPSParser.ai_item | = AI_MR; if(gAGPSParser.ai_item == AI_ALL) { cagps_excute_valid_cb(&gAGPSParser.agpsdat); agps_reset(); }}///重置基站定位static void cagps_reset(void){ gAGPSParser.ai_item = AI_NULL;}///short类型转换short cmo_short_reverse(short sh){ char *p0 = (char *)&sh; short ret = 0; char *p1 = (char *)&ret; p1[0] = p0[0]; p1[1] = p0[1]; return ret;}///注册回调函数REG_TYPE cagps_reg_valid_cb(cagps_set_agpsdata_cb fun_ptr){ U8 i = 0; cagps_set_agpsdata_cb *parser_data_cb_list = gAGPSParer.set_agpsdata_cb; ASSERT(fun_ptr != NULL); while(parser_data_cb_list[i] != fun_ptr) { if(parser_data_cb_list[i] == fun_ptr) { return RT_HAS_DONE; } i++; if(i >= 6) { return RT_FAILED; } } parser_data_cb_list[i] = fun_ptr; return RT_SUCCESSED;}///取消注册回调函数BOOL cagps_unreg_valid(cagps_set_agpsdata_cb fun_ptr){ U8 i = 0; cagps_set_agpsdata_cb *parser_data_cb_list = gAGPSParser.set_agpsdata_cb; ASSERT(fun_ptr != NULL); while(i < 6) { if(parser_data_cb_list[i] == fun_ptr) { parser_data_cb_list[i] = NULL; return TRUE; } i++; } return FALSE;}///执行回调函数static void cagps_excute_valid(const AGPSDataStruct *p_agpsdata){ U8 i = 0; cagps_set_agpsdata_cb *parser_data_cb_list = gAGPSParser.set_agpsdata_cb; while(i < 6) { if(parser_data_cb_list[i] != NULL) { (*parser_data_cb_list[i])(p_agpsdata); } i++; }}///打开基站定位。发送消息MSG_ID_MMI_EM_UPDATE_REQBOOL cagps_open(void){ if(!gAGPSParser.bt_open) { gAGPSParser.bt_open = TRUE; share_SendEMUpdateReq(TRUE); } return gAGPSParser.bt_open;}///关闭基站定位void cagps_close(void){ if(gAGPSParser.bt_open) { share_SendEMUpdateReq(FALSE); gAGPSParser.bt_open = FALSE; cagps_restet(); }}///向系统发送MSG_ID_MMI_EM_UPDATE_REQ的消息处理/*typedef struct{ LOCAL_PARA_HDR kal_uint8 info_request[EM_INFO_REQ_NUM]; } mmi_em_update_req_struct;*/void share_SendEMUpdataReq(BOOL bState){ S32 i; MYQUEUE Message; mmi_em_update_req_struct *update_req; Message.oslMsgId = MSG_ID_MMI_EM_UPDATE_REQ; update_req = OslConstructDataPtr(sizeof(mmi_em_update_req_struct)); for(i = 0; i < EM_INFO_REQ_NUM; i++) { update_req->info_requsest[i] = EM_OFF; } if(bState) { update_req->info_request[RR_EM_LAI_INFO] = EM_ON; update_req->info_request[RR_EM_MESUREMENT_REPORT_INFO] = EM_ON; } Message.oslDataPtr = (oslParaType *)updata_req; Message.oslPeerBuffPtr = NULL; Message.oslSrcID = MOD_MMI; Message.oslDestId = MOD_L4C;}
///外部得到基站信息AGPSDataStruct *cagps_get_data(void){ WORD wCID = gAGPSParser.agpsdata.cell_id; if(wCID == 0) { } return &gAGPSParser.agpsdata;}
