【正文】 s work and lifestyle a great change, manmachine interfaces will be more humane. The current standard Bluetooth can also transfer 1 Mbit / s voice and data, but transmission rate of the Bluetooth standard introduced in 2003 could reach 12 Mb. And it will be a smart frequencyhopping technology patible with the standard. Perhaps in the near future, people go by train and plane will be very convenient. Many things for example, booking, buyi。s personal mobile gateway (PMG) using Bluetooth technology will help to deliver value for the operator, through changing an ordinary telephone into wireless router, which can expand the use of other data equipment, can move from the personal gateway transfers the data via Bluetooth to the socalled thin passengers households terminal to enhance its usability. And this is now can be precisely solved the inconvenient question of the use of data. But at the same time IXI Mobile39。s authoritative Organization for Standardization, also concerned about Bluetooth technology in the formulation and development of standards. For example, the IEEE standardization institude has set up Working Group, the specialized concerning exclusively about the Bluetooth technology standards’ patibility ,the future development and other issues. IEEE TG1 is discussing a standard in accordance with Bluetooth version . IEEE TG2 is to explore how the Bluetooth and IEEE wireless LAN technology coexist. And the IEEE TG3, is to study the future development of Bluetooth technology to a higher rate (such as 10 / s). Numbers of domestic manufacturers and research departments have also ready to start with the research of Bluetooth technology for product development. The China forum on development and application of Bluetooth technology attracted a lot of people who concern Bluetooth technology. The forum is built by many people from the national authorities, the business munity, academia and leaders of researching production institutions, experts, professors and other authoritative sources. And all sectors of the domestic and world organizations Bluetooth SIG organization representatives talk over the issues of concern to both sides. The two sides will further strengthen ties and share the Bluetooth technology information resources, and jointly promote the Bluetooth technology in China, such as the promotion and application of the issue to reach a consensus. 2. Application issue highlightsAlthough Bluetooth technology developed rapidly, widely used, and the market outlook is promising, but the current status quo of Bluetooth technology, in particular Bluetooth World Congress from 2003 exposed the problems of it, the outlook is still not optimistic. Bluetooth technology has not yet received adequate recognition of consumerAlthough Bluetooth technology in the industry has received a widespread concerns , but not received adequate consumer’s recognition. Philips Semiconductor mercial lines connecting Paul Marino, general manager pointed out: Bluetooth industry did not clearly tell consumers, the technology will give them any value. While TI39。北京航空航天大學出版社,2006：3542.[2][M].秦老師工作認真負責，積極為我們提供所需的資料，讓我學到了很多有用的東西，督促我們完成任務，她嚴謹?shù)闹螌W精神和深厚的理論水平都使我受益匪淺，在此感謝秦老師的耐心指導。但由于知識的欠缺，還無法真正實現(xiàn)數(shù)據(jù)的無線傳輸。
3. 設計藍牙模塊與PC機的連接與傳輸，以及藍牙與FPGA的連接，用函數(shù)實現(xiàn)簡單的通信功能。圖617藍牙建鏈流程1. 復位：Reset[01 03 0C 00]2. 初始化：Write_Scan_Enable[01 1A 0C 01 03]Set_Event_Filter[01 05 0C 03 02 00 02] Ericsson_Write_PCM_Setting[01 07 FC 01 03]3. 查詢：Inquiry[01 01 04 05 33 8B 9E 06 00]4．建立ACL：Create_Connection[01 05 04 0D BD_ADDR 08 00 01 00 timedrift 00],其中BD_ADDR和timedrift是由Inquiry得到的藍牙地址和時鐘偏差5. 發(fā)送數(shù)據(jù)：02 01 20 02 00 FF FF（例子）6. 建立SCO：Add_SCO_Connection[01 07 04 04 00 01 20 00]7．斷開連接：Disconnection[04 05 04 00 01 00 08] 學習參考 結　論本設計采用EDA 的設計思想，完成了以FPGA 為核心邏輯控制部件，以藍牙芯片傳輸?shù)臏囟炔杉到y(tǒng)，主要結論如下：
1. 確定整個系統(tǒng)的各個模塊以及其對應的功能和管腳，并確定各個模塊之間的連接方式。表63 HCI事件分組格式事件類型碼參數(shù)總長事件參數(shù)0……事件總長N(3)HCI數(shù)據(jù)分組，HCI分組包括兩類，ACL和SCO分組，對應的格式分別如表64和65所示。(1) HCI指令分組，用于從主機向主控制器發(fā)送指令，如表62所示。 HCI分組藍牙主機與藍牙模塊之間是通過各種HCI分組來交互的，HCI分組包括三種，分別是HCI指令分組、HCI事件分組、HCI數(shù)據(jù)分組。HCI指令用于處理由主機傳來的HCI指令和數(shù)據(jù)，然后再傳向鏈路管理固件和基帶硬件，最后通過射頻發(fā)出。圖616 HCI的數(shù)據(jù)傳輸模式射頻、基帶控制器、HCI固件及鏈路管理器構成了藍牙硬件模塊。 end PC機與藍牙的連接通信 PC機與藍牙是通過HCI通信傳輸?shù)?，HCI是整個藍牙協(xié)議體系中提供對基帶控制器和鏈路管理器的命令接口以及對硬件狀態(tài)和控制注冊成員的訪問。 rdsig=139。 idle=139。 end …… else begin t=839。 rdsig=139。 t=t+839。 dataout[0]=rx。d24: begin idle=139。b0。d1。b1。b1) begin case(t) 839。圖614 UART接收模塊設計由圖614的設計圖導出仿真圖615可知其結果與所設計的一致，UART接收模塊得到驗證。 end end UART的接收模塊設計用VerilogHDL語言設計UART的接收模塊功能，圖613為UART接收模塊功能圖。 idle=139。 t=839。 end …… else begin tx=139。 t=t+839。 idle=139。d16: begin tx=datain[0]。d1。b1。b0。b1) begin case(t) 839。圖611 UART發(fā)送模塊由圖611導出的仿真圖612可知其結果與所設計的一致，UART發(fā)送模塊得到驗證。 endend UART的發(fā)送模塊設計用VerilogHDL語言設計UART的發(fā)送模塊功能，圖610為發(fā)送模塊功能圖，如下圖所示。 t=t+839。 end else begin wrsig=139。 t=839。 wrsig=139。對應的VerilogHDL代碼如下：always (posedge clk)begin if(t==254) begin dataout=dataout+839。圖69 UART測試模塊仿真圖由仿真圖69可知其結果與所設計的一致，UART測試模塊得到驗證。我們設計一個從0依次加1的功能模塊，如下68圖所示。d1。d0。b0。 endelse if(t==1639。 t=t+1639。d12) begin clkout=139。圖67時鐘分頻仿真由仿真圖可知其結果與所設計的一致，分頻模塊得到驗證。用VerilogHDL設計功能圖如下圖66所示。為了能保證數(shù)據(jù)傳輸?shù)恼_性，UART采用16倍的數(shù)據(jù)波特率時鐘進行采樣。圖64MAX232引腳下圖65所示為MAX232模塊的具體連接應用。圖63UART功能框 MAX232設計 由于RS232的電氣特性與FPGA引腳不相同，因此它們之間不能直接相連，對于RS232的數(shù)據(jù)線，當為邏輯“1”時，對應電平是15V~3V；當為邏輯“0”時，對應電平是15V~3V。設計時可參考由專用芯片實現(xiàn)的UART的功能并進行一定精簡，如可以用FPGA的片內RAM替換UART的FIFO，不用單獨在UART模塊中實現(xiàn)。起始位和停止位的作用是使接收器能把局部時鐘與每個新開始接收的字符再同步。數(shù)據(jù)傳輸之后是可供選擇的奇偶位發(fā)送或接收4. 停止傳輸。發(fā)送方在任何時刻將傳號變成空號，即“1”跳變到“O”，并持續(xù)1位時間表明發(fā)送方開始傳輸數(shù)據(jù)。表61異步通信字符傳輸