【正文】 。 因此為了符合 上述的要求，提出一種 新的設計方法，特別選用 STM32 微控制器作為數(shù)據(jù)傳輸?shù)闹行目刂破?。要求信息共享，生產(chǎn)過程信息化、網(wǎng)絡化管理。 3rd, in the process of designing software, implement TCP protocol over Ether to serial data protocol conversion and transport. Key words： STM32F107； Ether； RS232； Data transmission gateway； 目 錄 第一章 方案介紹 .......................................................................................................................1 課題設 計背景 .................................................................................................................1 課題設計要求 .................................................................................................................1 課題設計工作 .................................................................................................................1 第二章 主控芯片的選擇 ...........................................................................................................3 STM32 微型控制器的選擇 ..............................................................................................3 STM32F107 芯片 概述 ......................................................................................................3 STM32F107 芯片結(jié) 構(gòu) ......................................................................................................4 STM32 的功能及優(yōu)勢 ......................................................................................................5 第三章 網(wǎng)關(guān)硬件設計 ...............................................................................................................6 總體框架設計 .................................................................................................................6 電源模塊設計 .................................................................................................................7 JTAG 下載電路 ................................................................................................................8 復位電路 .........................................................................................................................8 以太網(wǎng)模塊電路設計 .....................................................................................................9 RS232 通訊電路設計 ......................................................................................................9 第四章 軟件介紹 ..................................................................................................................... 11 LWIP 協(xié)議棧簡介 .......................................................................................................... 11 pbuf 結(jié)構(gòu)體定義 ................................................................................................... 11 LWIP 協(xié)議棧中各層的實現(xiàn) ................................................................................... 12 LWIP 協(xié)議棧的內(nèi)存管理 ....................................................................................... 13 IP 處理 .......................................................................................................................... 14 IP 接收包 ............................................................................................................... 15 IP 發(fā)送包 ............................................................................................................... 16 TCP 服務器的設計和實現(xiàn) ............................................................................................ 16 TCP 協(xié)議的特點 ..................................................................................................... 16 TCP 協(xié)議結(jié)構(gòu) ......................................................................................................... 17 TCP 連接函數(shù)的建立 ............................................................................................. 18 TCP 服務器的初始化 ............................................................................................. 19 RS232 的通訊 ................................................................................................................ 20 軟件設計 ....................................................................................................................... 21 數(shù)據(jù)轉(zhuǎn)換軟件設計 ....................................................................................................... 22 第五章 系統(tǒng)的測試 ................................................................................................................. 25 數(shù)據(jù)傳輸簡介 ............................................................................................................... 25 硬件連接 ....................................................................................................................... 25 程序的調(diào)試與下載 ....................................................................................................... 25 軟件配置 ....................................................................................................................... 27 TCP 與 RS232 的雙向數(shù)據(jù)傳輸 .................................................................................... 29 TCP 向 RS232 進行數(shù)據(jù)傳輸 ................................................................................. 30 RS232 向 TCP 進行數(shù)據(jù)傳輸 ................................................................................. 31 測試結(jié)論分析 ........................................................................................................ 32 致謝 ........................................................................................................................................... 33 參考文獻 ................................................................................................................................... 34 附錄 ........................................................................................................................................... 36 第一章 方 案介紹 1 第一章 方案介紹 課題設計背景 智能建筑 就 是 把 建筑物的結(jié)構(gòu)、設備、服務