矩阵键盘驱动、看门狗实验报告

杭州电子科技大学 实验报告 课程名称 嵌入式系统原理课程设计 姓名 应海东 实验项目 矩阵键盘驱动 看门狗实验 班级 10052313 指导教师 任彧 学号 10051329 日期 2012 11 27 实验目的键盘驱动实验 掌握嵌入式系统中断的处理流程 学习中断式矩阵键盘的驱动原理 掌握通过 CPU 的 I O 扩展键盘的方法 看门狗实验 了解看门狗的作用 掌握看门狗的使用方法 实验环境硬件 DM2410 实验板 测控与显示扩展板 PC 机 J Link V8 仿真器 软件 PC 机操作系统 WINDOWS XP ARM Developer Suite v1 2 J link ARM V4 081 实验内容 算法 程 序 步骤和 方法 矩阵键盘驱动实验代码 include def h include option h include 2410addr h include 2410lib h include 2410slib h void Led Test void void Led 8 Display int data void Led Output U8 data U8 DAT 10 0 xfa 0 x60 0 xdc 0 xf4 0 x66 0 xb6 0 xbe 0 xe0 0 xfe 0 xf6 函数定义区 函数名 Key Test 功能 实现键盘扫描 参数 void 返回值 void void Key Test void int i j count 0 int key 0 Led Test Uart Printf n nPRESS ANY KEY ON ECPEND BOARD n GPFCON GPF 1 0 00 INPUT GPFCON GPF 3 2 00 INPUT GPFCON GPF 5 4 00 INPUT GPFCON GPF 15 14 00 INPUT rGPFCON rGPFCON pf1237 input GPBCON GPB7 15 14 01 OUTPUT GPBCON GPB8 17 16 01 OUTPUT GPBCON GPB9 19 18 01 OUTPUT GPBCON GPB10 21 20 01 OUTPUT rGPBCON rGPBCON 0 x154000 rGPBCON rGPBCON Uart Printf n nPRESS ANY KEY OF PC TO STOP n while Uart GetKey GPBDAT 10 7 0000 rGPBDAT rGPBDAT if rGPFDAT 0 xffffff71 switch rGPFDAT 0 xffffff71 case 0 x2 i 1 break case 0 x4 i 2 break case 0 x8 i 3 break case 0 x80 i 4 break GPBDAT 10 9 8 7 0001 rGPBDAT rGPBDAT 0 x80 rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT if rGPFDAT 0 xffffff71 j 1 else GPBDAT 10 9 8 7 0010 rGPBDAT rGPBDAT rGPBDAT rGPBDAT 0 x100 rGPBDAT rGPBDAT rGPBDAT rGPBDAT if rGPFDAT 0 xffffff71 j 2 else GPBDAT 10 9 8 7 0100 rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT 0 x200 rGPBDAT rGPBDAT if rGPFDAT 0 xffffff71 j 3 else j 4 GPBDAT 10 9 8 7 1000 rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT rGPBDAT 0 x400 Delay 1 if i 4 if j 1 a i key 41 else if j 2 j r key 42 else if j 3 s z key 43 else key 0 else if j 4 if i 1 A I key 14 else if i 2 J R key 24 else if i 3 key 34 Delay 1 switch i 10 j S Z case 11 if key 0 Led 8 Display 1 else if key 41 Led 8 Display 97 a else if key 42 Led 8 Display 106 j else if key 43 Led 8 Display 115 s else if key 14 Led 8 Display 65 else if key 24 Led 8 Display 74 else if key 34 Led 8 Display 83 break case 12 if key 0 Led 8 Display 2 else if key 41 Led 8 Display 98 b else if key 42 Led 8 Display 107 k else if key 43 Led 8 Display 116 t else if key 14 Led 8 Display 66 else if key 24 Led 8 Display 75 else if key 34 Led 8 Display 84 break case 13 if key 0 Led 8 Display 3 else if key 41 Led 8 Display 99 c else if key 42 Led 8 Display 108 l else if key 43 Led 8 Display 117 u else if key 14 Led 8 Display 67 else if key 24 Led 8 Display 76 else if key 34 Led 8 Display 85 break case 21 if key 0 Led 8 Display 4 else if key 41 Led 8 Display 100 d else if key 42 Led 8 Display 109 m else if key 43 Led 8 Display 118 v else if key 14 Led 8 Display 68 else if key 24 Led 8 Display 77 else if key 34 Led 8 Display 86 break case 22 if key 0 Led 8 Display 5 else if key 41 Led 8 Display 101 e else if key 42 Led 8 Display 110 n else if key 43 Led 8 Display 119 w else if key 14 Led 8 Display 69 else if key 24 Led 8 Display 78 else if key 34 Led 8 Display 87 break case 23 if key 0 Led 8 Display 6 else if key 41 Led 8 Display 102 f else if key 42 Led 8 Display 111 o else if key 43 Led 8 Display 120 x else if key 14 Led 8 Display 70 else if key 24 Led 8 Display 79 else if key 34 Led 8 Display 88 break case 31 if key 0 Led 8 Display 7 else if key 41 Led 8 Display 103 g else if key 42 Led 8 Display 112 p else if key 43 Led 8 Display 121 y else if key 14 Led 8 Display 71 else if key 24 Led 8 Display 80 else if key 34 Led 8 Display 89 break case 32 if key 0 Led 8 Display 8 else if key 41 Led 8 Display 104 h else if key 42 Led 8 Display 113 q else if key 43 Led 8 Display 122 z else if key 14 Led 8 Display 72 else if key 24 Led 8 Display 81 else if key 34 Led 8 Display 90 break case 33 if key 0 Led 8 Display 9 else if key 41 Led 8 Display 105 i else if key 42 Led 8 Display 114 r else if key 43 Led 8 Display 0 else if key 14 Led 8 Display 73 else if key 24 Led 8 Display 82 break Delay 1 Uart Printf n nTEST FINISHED 名称 Led 8 Display 功能 将 8 位数据诸位送出 参数 void 返回值 void void Led Test void GPGCON GPG5 11 10 01 Output RCK GPGCON GPG6 13 12 01 Output DATA OUT GPGCON GPG7 15 14 01 Output CLK rGPGCON rGPGCON rGPGCON rGPGCON 0 x15000 rGPGDAT rGPGDAT void Led 8 Display int data int j i 7 U8 num j data for i 7 i 0 i num j 10 j j 10 Led Output DAT num RCK rGPGDAT rGPGDAT 0 x100 Delay 1 rGPGDAT rGPGDAT Delay 1 名称 Led Output 功能 将每位数的 8 位段数据送出 参数 void 返回值 void void Led Output U8 data int i j j data for i 7 i 0 i 共 8 段 if j 2 rGPGDAT rGPGDAT 0 x40 else rGPGDAT rGPGDAT j j 2 rGPGDAT rGPGDAT 0 x80 Delay 1 rGPGDAT rGPGDAT 看门狗实验代码 define UP KEY0 x41 define DOWN KEY 0 x42 defineESC KEY0 x1b void WDTimer reset void int i 35 int k 0 int i 7 int isWdtInt 0 Uart Printf n WatchDog Timer Request Test n rWTCON PCLK 1000000 1 5 8 3 3 1 Uart Printf nI will restart after d sec n i rWTCNT 8448 i rWTDAT 8448 i rWTCON rWTCON 1 1 rWTCNT 8448 i isWdtInt 0 else if k DOWN KEY isWdtInt 0 Uart Printf d isWdtInt r