【正文】 res . Every module draws the very block diagram ,which is clear at a glance . Finally,via simulation and debugging ,the design of the control aspects such as the clock , the manual switch curtain has basically reached the expected purpose . Of course , the system requires constant perfection and improvement on some detail designs . Key words： stc89c52rc singlechip； ds1302 clock chip； infrared remote control；lcd1602； curtain 目錄 摘 要 ...................................................................................................................................... I Abstract ................................................................................................................................ III 1 緒言 ................................................................................................................................... 1 課題背景 ................................................................................................................. 1 課題的研究方向 ..................................................................................................... 1 2 系統(tǒng)總體方案設(shè)計(jì) ........................................................................................................... 2 系統(tǒng)方案確定 ......................................................................................................... 2 模塊器件選擇 ......................................................................................................... 2 STC89C52RC 單片機(jī) ................................................................................... 2 LCD1602 液晶顯示屏 .................................................................................. 5 DS1302 時(shí)鐘芯片 ......................................................................................... 5 3 系統(tǒng)硬件電路設(shè)計(jì) ........................................................................................................... 6 單片機(jī)時(shí)鐘電路 ..................................................................................................... 6 單片機(jī)復(fù)位電路 ..................................................................................................... 6 電源 電路 ................................................................................................................... 7 顯示電路 ................................................................................................................... 7 LCD1602 管腳介紹 ...................................................................................... 8 LCD1602 操作時(shí)序 ...................................................................................... 8 LCD1602 指令集 .......................................................................................... 8 DS1302 時(shí)鐘電路 ...................................................................................................... 9 DS1302 簡介 ............................................................................................... 9 DS1302 芯片引腳 ....................................................................................... 9 DS1302 內(nèi)部寄存器 ................................................................................. 10 DS1302 數(shù)據(jù)傳輸方式 ............................................................................. 10 AT24C02 數(shù)據(jù)存儲(chǔ)電路 ........................................................................................11 AT24C02 簡介 ............................................................................................11 AT24C02 芯片引腳 ....................................................................................11 I2C 總線介紹 ............................................................................................ 12 步進(jìn)電機(jī) 28BYJ48 電路 ..................................................................................... 13 28BYJ_48 電路圖 ....................................................................................... 13 28BYJ_48 相關(guān)概念 ................................................................................... 14 28BYJ_48 驅(qū)動(dòng)時(shí)序 ................................................................................... 14 28BYJ_48 特點(diǎn) ........................................................................................... 15 28BYJ_48 驅(qū)動(dòng)芯片 ULN2020 .................................................................. 15 紅外接收電路 ....................................................................................................... 16 紅外接收電路圖 ......................................................................................... 16 紅外接收探頭 HS0038 ............................................................................... 16 光控電路 ............................................................................................................... 17 窗簾框架設(shè)計(jì) ..................................................................................................... 17 4 系統(tǒng)軟件設(shè)計(jì) ................................................................................................................. 18 LCD1602 顯示程序 .............................................................................................. 18 LCD1602 的初始化過程 ............................................................................ 18 LCD1602 的程序流程圖 ............................................................................ 18 DS1302 時(shí)鐘芯片控制程序 ................................................................................. 19 時(shí)間調(diào)整和定時(shí)時(shí)間程序 ................................................................................... 20 步進(jìn)電機(jī)控制程序 ............................................................................................... 21 步進(jìn)電機(jī)轉(zhuǎn)動(dòng)方式（一） ......................................................................... 21 步進(jìn)電機(jī)轉(zhuǎn)動(dòng)方式（二） ......................................................................... 22 步進(jìn)電機(jī)控制程序流程圖 ...............................................