键盘测试程序

1、cpp view plaincopyprint?1. #include 2. #defineucharunsignedchar 3. #defineuintunsignedint 4. sbitdula=P30;5. sbitwela=P31;6. #definekeyport(P1) 7. #definekeystate00/按键确认状态 8. #definekeystate11/按键无动作状态 9. charkeystate=1;/按键状态初始化为按键无动作状态 10. ucharkeynum=0;11. voiddelayms(uintx)/1ms 12. 13. uinty,z;14.

2、 for(y=x;y0;y-)15. for(z=111;z0;z-);16. 17. ucharcodetable=/共阳数码管 18. 0xc0,0xf9,0xa4,0xb0,19. 0x99,0x92,0x82,0xf8,20. 0x80,0x90,0x88,0x83,21. 0xc6,0xa1,0x86,0x8e;22. voidsmg()23. 24. dula=0;25. wela=0;26. P2=0x01;27. wela=1;28. wela=0;29. P2=tablekeynum;30. dula=1;31. dula=0;32. delayms(1);33. 34. P

3、2=0x02;35. wela=1;36. wela=0;37. P2=tablekeynum;38. dula=1;39. dula=0;40. delayms(1);41. 42. P2=0x04;43. wela=1;44. wela=0;45. P2=tablekeynum;46. dula=1;47. dula=0;48. delayms(1);49. 50. P2=0x08;51. wela=1;52. wela=0;53. P2=tablekeynum;54. dula=1;55. dula=0;56. delayms(1);57. 58. P2=0x10;59. wela=1;

4、60. wela=0;61. P2=tablekeynum;62. dula=1;63. dula=0;64. delayms(1);65. 66. P2=0x20;67. wela=1;68. wela=0;69. P2=tablekeynum;70. dula=1;71. dula=0;72. delayms(1);73. 74. P2=0x40;75. wela=1;76. wela=0;77. P2=tablekeynum;78. dula=1;79. dula=0;80. delayms(1);81. 82. P2=0x80;83. wela=1;84. wela=0;85. P2=

5、tablekeynum;86. dula=1;87. dula=0;88. delayms(1);89. 90. voidkeyscan()91. 92. uchartemp1,temp2,column,row;93. switch(keystate)94. 95. casekeystate0:/keystate0，按键按下确认状态，下一状态为keystate1(按键无动作状态) 96. keyport=0x0f;97. temp1=keyport;98. keyport=0xf0;99. temp2=keyport;100. if(temp1|temp2)!=0xff)101. 102. t

6、emp1|=temp2;103. if(!(temp1&0x80)104. row=3;105. else106. if(!(temp1&0x40)107. row=2;108. else109. if(!(temp1&0x20)110. row=1;111. else112. if(!(temp1&0x10)113. row=0;114. if(!(temp1&0x08)115. column=3;116. else117. if(!(temp1&0x04)118. column=2;119. else120. if(!(temp1&0x02)121. column=1;122. else1

7、23. if(!(temp1&0x01)124. column=0;125. keynum=column*4+row;126. while(!(keyport=0x0f|keyport=0xf0);127. keystate=keystate1;128. break;129. 130. 131. else132. keystate=keystate1;133. break;134. casekeystate1:/keystate1，按键无动作状态，下一状态为keystate0(按键无动作状态) 135. keyport=0x0f;136. temp1=keyport;137. keyport=

8、0xf0;138. temp2=keyport;139. if(temp1|temp2)!=0xff)140. 141. keystate=keystate0;142. 143. else144. keystate=keystate1;145. break;146. 147. 148. voidmain()149. 150. while(1)151. 152. keyscan();153. smg();154. 155. #include#define uchar unsigned char#define uint unsigned intsbit dula=P30;sbit wela=P31

9、;#define keyport (P1)#define keystate0 0/按键确认状态#define keystate1 1/按键无动作状态char keystate=1;/按键状态初始化为按键无动作状态uchar keynum=0;void delayms(uint x)/1msuint y,z;for(y=x;y0;y-)for(z=111;z0;z-);uchar code table=/共阳数码管0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;void smg()du

10、la=0;wela=0;P2=0x01;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x02;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x04;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x08;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x10;wela=1;wela=0;P2=tablekeynum;dul

11、a=1;dula=0;delayms(1);P2=0x20;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x40;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);P2=0x80;wela=1;wela=0;P2=tablekeynum;dula=1;dula=0;delayms(1);void keyscan()uchar temp1,temp2,column,row;switch(keystate)case keystate0:/keystate0，按键按下确认状

12、态，下一状态为keystate1(按键无动作状态)keyport=0x0f;temp1=keyport;keyport=0xf0;temp2=keyport;if(temp1|temp2)!=0xff)temp1|=temp2;if(!(temp1&0x80)row=3;else if(!(temp1&0x40)row=2;elseif(!(temp1&0x20)row=1;elseif(!(temp1&0x10)row=0;if(!(temp1&0x08)column=3;else if(!(temp1&0x04)column=2;elseif(!(temp1&0x02)column=1;elseif(!(temp1&0x01)column=0;keynum=column*4+row;while(!(keyport=0x0f|keyport=0xf0);keystate=keystate1;break;elsekeystate=keystate1;break;case keystate1:/keystate1，按键无动作状态，下一状态为keystate0(按键无动作状态)keyport=0x0f;tem