【正文】 ........................................................................................... 9 液晶顯示芯片的選擇 ............................................................................................................................. 10 LCD12864 引腳說明 ....................................................................................................................... 11 LCD12864 工作時序 ....................................................................................................................... 12 驅(qū)動芯片的選擇 ...................................................................................................................................... 13 L298N 引腳說明 .............................................................................................................................. 13 步進電機的調(diào)速方法 ............................................................................................................................. 15 步進電動機概述 .............................................................................................................................. 15 步進電動機的調(diào)速 ......................................................................................................................... 15 直流電動機的調(diào)速方法 ......................................................................................................................... 15 直流電動 機概述 .............................................................................................................................. 15 直流電動機的調(diào)速 ......................................................................................................................... 16 第 3 章 乒乓球發(fā)球機控制器硬件設(shè)計 ..........................................................................................................17 總體設(shè)計 .................................................................................................................................................. 18 單片機的最小系統(tǒng) .................................................................................................................................. 18 驅(qū)動電路模塊 .......................................................................................................................................... 19 按鍵電路模塊 .......................................................................................................................................... 20 LCD 液晶顯示電路模塊 ........................................................................................................................ 20 第 4 章 乒乓球發(fā)球機控制器軟件設(shè)計 ..........................................................................................................21 系統(tǒng)軟件設(shè)計概述 ................................................................................................................................. 21 軟件程序編寫的原則 .................................................................................................................... 21 程序設(shè)計方法 ................................................................................................................................. 22 軟件設(shè)計步驟 ................................................................................................................................. 23 編譯軟件介紹 ......................................................................................................................................... 23 4 系統(tǒng)各部分流程圖 .................................................................................................................................. 24 主程序流程 ..................................................................................................................................... 24 LCD12864 流程 ............................................................................................................................... 25 按鍵流程 ......................................................................................................................................... 27 電機驅(qū)動流程 ................................................................................................................................. 29 直流電機驅(qū)動流程 ...................................................................................................................... 30 步進電機驅(qū)動流程 ...................................................................................................................... 31 第 5 章 系統(tǒng)調(diào)試 ................................................................................................................................................32 硬件調(diào)試 .................................................................................................................................................. 32 硬件靜態(tài)調(diào)試 ................................................................................................................................. 32 硬件動態(tài)調(diào)試 ................................................................................................................................. 33 軟件調(diào)試 .................................................................................................................................................. 33 聯(lián)機調(diào)試 .................................................................................................................................................. 34 調(diào)試結(jié)果 .................................................................................................................................................. 35 第 6 章 結(jié)束語 ....................................................................................................................................................37 總結(jié) ........................................................................................................................................................... 37 心得體會 .................................................................................................................................................. 37 致 謝 ............................