【正文】 ion, powerful, low price, good reliability, and many other advantages, which in the instrumentation, home appliances, data acquisition, and some areas have been widely used in embedded control. When you need to deal with more plex data, or the need for more prehensive data collection process and the need for distributed control, the microcontroller arithmetic and logic operations noticeable lack of ability, then often require the use of puter systems. The microcontroller data collected through the serial port to the PC machine, highlevel language, or by the PC database language processing, or achieve PC remote microprocessor control. Therefore, SCM and remote munication between PC has more practical significance. Keywords: microcontroller, PC, send data, receive data ,serial munication 西北工業(yè)大學(xué)明德學(xué)院本科畢業(yè)設(shè)計論文 1 目 錄 摘 要 ................................................................................................................................ I 緒 論 ............................................................................................................................... 2 第一章 設(shè)計總體介紹 ...................................................................................................... 3 單片機的發(fā)展階段 ............................................................................................... 3 單片機的發(fā)展趨勢 ............................................................................................... 3 單片機的應(yīng)用模式 ............................................................................................... 4 單片機與 PC 串口間通訊設(shè)計的應(yīng)用 .................................................................... 5 設(shè)計內(nèi)容及要求 ............................................................................................... 5 串口通信原理 ..................................................................................................... 5 第二章 系統(tǒng)設(shè)計 ............................................................................................................. 8 硬件方案選擇 ...................................................................................................... 8 單片機的選擇 ............................................................................................. 8 電平轉(zhuǎn)換 .................................................................................................... 8 單片機與 pc 機通信原理 ............................................................................. 8 軟件方案選擇 ...................................................................................................... 9 PC機編程方案選擇 ................................................................................. 9 單片機編程方案選擇 ................................................................................. 9 總體方案選擇 ................................................................................................... 10 系統(tǒng)總體設(shè)計思路 ............................................................................................. 10 第三章 單元硬件電路設(shè)計 ..............................................................................................11 硬件實現(xiàn)的過程 ..................................................................................................11 單片機主要特性 .......................................................................................11 RS232 總線標準 ...................................................................................... 16 RS232C接口電路 ........................................................................................... 17 、 MAX232接口電路 ............................................................................... 18 51 單片機與 PC 機串行通信電路 ...................................................................... 19 第四章 軟件設(shè)計 ........................................................................................................... 21 軟件設(shè)計和硬件設(shè)計的關(guān)系 .............................................................................. 21 Proteus 中的 仿真 使用 ......................................................................................... 21 虛擬串口 ................................................................................................. 21 虛擬串口在 Proteus 中的使用 ................................................................... 24 在 Proteus 中實現(xiàn)單片機的串口調(diào)試功能 .................................................. 28 程序設(shè)計 ........................................................................................................... 30 、程序運行后的結(jié)果 ........................................................................................... 33 第五章 結(jié)論 .................................................................................................................. 34 致 謝 ............................................................................................................................. 35 參考文獻 ........................................................................................................................ 36 西北工業(yè)大學(xué)明德學(xué)院本科畢業(yè)設(shè)計論文 2 緒 論 計算機與計算機或計算機與終端之間的數(shù)據(jù)傳送可以采用串行通訊和并行通訊二種方式。由于單片機具有體積小，重量輕，功耗低，功能強，價格低，可靠性好等諸多優(yōu)點，因而在儀器儀表，家用電器，數(shù)據(jù)采集等一些嵌入式控制領(lǐng)域被廣泛應(yīng)用。 4. 1415 周 對各階段的工作整理，完成畢業(yè)設(shè)計論文撰寫及修改。 五、進度安排 1． 23 周 接受并熟悉任務(wù)書，查閱有關(guān)書籍、資料，上網(wǎng)查尋相關(guān)網(wǎng)站，獲取所需的信息。 （ 2）軟件設(shè)計 通過 keil 軟件編寫相關(guān)程序并進行調(diào)試。 附加初步總體結(jié)構(gòu)圖 設(shè)計總體構(gòu)思圖 （ 1）硬件設(shè)計 通過 ALtium Designer 設(shè)計串口通信硬件電路，制作全部電路 PCB 及所有的元器件的焊接。 通信正常，但顯示出現(xiàn)亂碼