红外遥控器同一个键控制一个I/O口，第一次开，第二次关，比如P0^1开启关闭C语言代码？高手请进。 单片机中独立键盘和矩阵键盘如何一起使用 请用C语言写个程序说...
at89c51\u5355\u7247\u673a\u5bf9\u5e94\u9ad8\u4f4e\u7535\u5e73\u7684\u7535\u538b\u503c\u9ad8\u7535\u5e73\u6307\u7684\u662f\u548c\u4f60\u7535\u6e90\u7535\u538b\u76f8\u7b49\u7684\u4e3a\u903b\u8f911\u3002
0V\u8868\u793a\u903b\u8f910
\u5c31\u662f\u8bf4\u4f60 40\u811a\u548c20\u811a\u4e4b\u95f4\u7684\u7535\u538b\u8fd9\u4e2a\u503c\u5c31\u662f IO \u8f93\u51fa\u9ad8\u7535\u5e73\u503c\uff0c\u4f5c\u4e3a\u8f93\u5165\u7684\u65f6\u5019\uff0c\u7535\u538b\u57282\u30028V\u4ee5\u4e0a\u90fd\u8ba4\u4e3a\u662f\u9ad8\u7535\u5e73\u3002\u53ef\u4ee5\u517c\u5bb93\u30023V\u7cfb\u7edf\u3002
\u5e95\u7535\u5e73\u4e00\u822c\u57280\u30028V\u4ee5\u4e0b\u3002\u3002\u4e0d\u540c\u7684\u5668\u4ef6\u4f1a\u6709\u4e0d\u540c\u7684\u6807\u51c6\u3002
AT89S52
1
\u4e3b\u8981\u6027\u80fd
l \u4e0eMCS-51\u5355\u7247\u673a\u4ea7\u54c1\u517c\u5bb9
l 8K\u5b57\u8282\u5728\u7cfb\u7edf\u53ef\u7f16\u7a0bFlash\u5b58\u50a8\u5668
l 1000\u6b21\u64e6\u5199\u5468\u671f
l \u5168\u9759\u6001\u64cd\u4f5c\uff1a0Hz\uff5e33Hz
l \u4e09\u7ea7\u52a0\u5bc6\u7a0b\u5e8f\u5b58\u50a8\u5668
l 32\u4e2a\u53ef\u7f16\u7a0bI/O\u53e3\u7ebf
l \u4e09\u4e2a16\u4f4d\u5b9a\u65f6\u5668/\u8ba1\u6570\u5668
l \u516b\u4e2a\u4e2d\u65ad\u6e90
l \u5168\u53cc\u5de5UART\u4e32\u884c\u901a\u9053
l \u4f4e\u529f\u8017\u7a7a\u95f2\u548c\u6389\u7535\u6a21\u5f0f
l \u6389\u7535\u540e\u4e2d\u65ad\u53ef\u5524\u9192
l \u770b\u95e8\u72d7\u5b9a\u65f6\u5668
l \u53cc\u6570\u636e\u6307\u9488
l \u6389\u7535\u6807\u8bc6\u7b26
\u529f\u80fd\u7279\u6027\u63cf\u8ff0
AT89S52\u662f\u4e00\u79cd\u4f4e\u529f\u8017\u3001\u9ad8\u6027\u80fdCMOS8\u4f4d\u5fae\u63a7\u5236\u5668\uff0c\u5177\u6709
8K \u5728\u7cfb\u7edf\u53ef\u7f16\u7a0bFlash \u5b58\u50a8\u5668\u3002\u4f7f\u7528Atmel \u516c\u53f8\u9ad8\u5bc6\u5ea6\u975e
\u6613\u5931\u6027\u5b58\u50a8\u5668\u6280\u672f\u5236\u9020\uff0c\u4e0e\u5de5\u4e1a80C51 \u4ea7\u54c1\u6307\u4ee4\u548c\u5f15\u811a\u5b8c
\u5168\u517c\u5bb9\u3002\u7247\u4e0aFlash\u5141\u8bb8\u7a0b\u5e8f\u5b58\u50a8\u5668\u5728\u7cfb\u7edf\u53ef\u7f16\u7a0b\uff0c\u4ea6\u9002\u4e8e
\u5e38\u89c4\u7f16\u7a0b\u5668\u3002\u5728\u5355\u82af\u7247\u4e0a\uff0c\u62e5\u6709\u7075\u5de7\u76848 \u4f4dCPU \u548c\u5728\u7cfb\u7edf
\u53ef\u7f16\u7a0bFlash\uff0c\u4f7f\u5f97AT89S52\u4e3a\u4f17\u591a\u5d4c\u5165\u5f0f\u63a7\u5236\u5e94\u7528\u7cfb\u7edf\u63d0
\u4f9b\u9ad8\u7075\u6d3b\u3001\u8d85\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002
AT89S52\u5177\u6709\u4ee5\u4e0b\u6807\u51c6\u529f\u80fd\uff1a 8k\u5b57\u8282Flash\uff0c256\u5b57\u8282RAM\uff0c
32 \u4f4dI/O \u53e3\u7ebf\uff0c\u770b\u95e8\u72d7\u5b9a\u65f6\u5668\uff0c2 \u4e2a\u6570\u636e\u6307\u9488\uff0c\u4e09\u4e2a16 \u4f4d
\u5b9a\u65f6\u5668/\u8ba1\u6570\u5668\uff0c\u4e00\u4e2a6\u5411\u91cf2\u7ea7\u4e2d\u65ad\u7ed3\u6784\uff0c\u5168\u53cc\u5de5\u4e32\u884c\u53e3\uff0c
\u7247\u5185\u6676\u632f\u53ca\u65f6\u949f\u7535\u8def\u3002\u53e6\u5916\uff0cAT89S52 \u53ef\u964d\u81f30Hz \u9759\u6001\u903b
\u8f91\u64cd\u4f5c\uff0c\u652f\u63012\u79cd\u8f6f\u4ef6\u53ef\u9009\u62e9\u8282\u7535\u6a21\u5f0f\u3002\u7a7a\u95f2\u6a21\u5f0f\u4e0b\uff0cCPU
\u505c\u6b62\u5de5\u4f5c\uff0c\u5141\u8bb8RAM\u3001\u5b9a\u65f6\u5668/\u8ba1\u6570\u5668\u3001\u4e32\u53e3\u3001\u4e2d\u65ad\u7ee7\u7eed\u5de5
\u4f5c\u3002\u6389\u7535\u4fdd\u62a4\u65b9\u5f0f\u4e0b\uff0cRAM\u5185\u5bb9\u88ab\u4fdd\u5b58\uff0c\u632f\u8361\u5668\u88ab\u51bb\u7ed3\uff0c
\u5355\u7247\u673a\u4e00\u5207\u5de5\u4f5c\u505c\u6b62\uff0c\u76f4\u5230\u4e0b\u4e00\u4e2a\u4e2d\u65ad\u6216\u786c\u4ef6\u590d\u4f4d\u4e3a\u6b62\u3002
R
8 \u4f4d\u5fae\u63a7\u5236\u5668
8K \u5b57\u8282\u5728\u7cfb\u7edf\u53ef\u7f16\u7a0b
Flash
AT89S52
Rev. 1919-07/01
AT89S52
2
\u5f15\u811a\u7ed3\u6784
AT89S52
3
\u65b9\u6846\u56fe
\u5f15\u811a\u529f\u80fd\u63cf\u8ff0
AT89S52
4
VCC : \u7535\u6e90
GND: \u5730
P0 \u53e3\uff1aP0\u53e3\u662f\u4e00\u4e2a8\u4f4d\u6f0f\u6781\u5f00\u8def\u7684\u53cc\u5411I/O\u53e3\u3002\u4f5c\u4e3a\u8f93\u51fa\u53e3\uff0c\u6bcf\u4f4d\u80fd\u9a71\u52a88\u4e2aTTL\u903b
\u8f91\u7535\u5e73\u3002\u5bf9P0\u7aef\u53e3\u5199\u201c1\u201d\u65f6\uff0c\u5f15\u811a\u7528\u4f5c\u9ad8\u963b\u6297\u8f93\u5165\u3002
\u5f53\u8bbf\u95ee\u5916\u90e8\u7a0b\u5e8f\u548c\u6570\u636e\u5b58\u50a8\u5668\u65f6\uff0cP0\u53e3\u4e5f\u88ab\u4f5c\u4e3a\u4f4e8\u4f4d\u5730\u5740/\u6570\u636e\u590d\u7528\u3002\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c
P0\u5177\u6709\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u3002
\u5728flash\u7f16\u7a0b\u65f6\uff0cP0\u53e3\u4e5f\u7528\u6765\u63a5\u6536\u6307\u4ee4\u5b57\u8282\uff1b\u5728\u7a0b\u5e8f\u6821\u9a8c\u65f6\uff0c\u8f93\u51fa\u6307\u4ee4\u5b57\u8282\u3002\u7a0b\u5e8f\u6821\u9a8c
\u65f6\uff0c\u9700\u8981\u5916\u90e8\u4e0a\u62c9\u7535\u963b\u3002
P1 \u53e3\uff1aP1 \u53e3\u662f\u4e00\u4e2a\u5177\u6709\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u76848 \u4f4d\u53cc\u5411I/O \u53e3\uff0cp1 \u8f93\u51fa\u7f13\u51b2\u5668\u80fd\u9a71\u52a84 \u4e2a
TTL \u903b\u8f91\u7535\u5e73\u3002\u5bf9P1 \u7aef\u53e3\u5199\u201c1\u201d\u65f6\uff0c\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u628a\u7aef\u53e3\u62c9\u9ad8\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f5c\u4e3a\u8f93\u5165
\u53e3\u4f7f\u7528\u3002\u4f5c\u4e3a\u8f93\u5165\u4f7f\u7528\u65f6\uff0c\u88ab\u5916\u90e8\u62c9\u4f4e\u7684\u5f15\u811a\u7531\u4e8e\u5185\u90e8\u7535\u963b\u7684\u539f\u56e0\uff0c\u5c06\u8f93\u51fa\u7535\u6d41\uff08IIL\uff09\u3002
\u6b64\u5916\uff0cP1.0\u548cP1.2\u5206\u522b\u4f5c\u5b9a\u65f6\u5668/\u8ba1\u6570\u56682\u7684\u5916\u90e8\u8ba1\u6570\u8f93\u5165\uff08P1.0/T2\uff09\u548c\u65f6\u5668/\u8ba1\u6570\u56682
\u7684\u89e6\u53d1\u8f93\u5165\uff08P1.1/T2EX\uff09\uff0c\u5177\u4f53\u5982\u4e0b\u8868\u6240\u793a\u3002
\u5728flash\u7f16\u7a0b\u548c\u6821\u9a8c\u65f6\uff0cP1\u53e3\u63a5\u6536\u4f4e8\u4f4d\u5730\u5740\u5b57\u8282\u3002
\u5f15\u811a\u53f7 \u7b2c\u4e8c\u529f\u80fd
P1.0 T2\uff08\u5b9a\u65f6\u5668/\u8ba1\u6570\u5668T2\u7684\u5916\u90e8\u8ba1\u6570\u8f93\u5165\uff09\uff0c\u65f6\u949f\u8f93\u51fa
P1.1 T2EX\uff08\u5b9a\u65f6\u5668/\u8ba1\u6570\u5668T2\u7684\u6355\u6349/\u91cd\u8f7d\u89e6\u53d1\u4fe1\u53f7\u548c\u65b9\u5411\u63a7\u5236\uff09
P1.5 MOSI\uff08\u5728\u7cfb\u7edf\u7f16\u7a0b\u7528\uff09
P1.6 MISO\uff08\u5728\u7cfb\u7edf\u7f16\u7a0b\u7528\uff09
P1.7 SCK\uff08\u5728\u7cfb\u7edf\u7f16\u7a0b\u7528\uff09
P2 \u53e3\uff1aP2 \u53e3\u662f\u4e00\u4e2a\u5177\u6709\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u76848 \u4f4d\u53cc\u5411I/O \u53e3\uff0cP2 \u8f93\u51fa\u7f13\u51b2\u5668\u80fd\u9a71\u52a84 \u4e2a
TTL \u903b\u8f91\u7535\u5e73\u3002\u5bf9P2 \u7aef\u53e3\u5199\u201c1\u201d\u65f6\uff0c\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u628a\u7aef\u53e3\u62c9\u9ad8\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f5c\u4e3a\u8f93\u5165
\u53e3\u4f7f\u7528\u3002\u4f5c\u4e3a\u8f93\u5165\u4f7f\u7528\u65f6\uff0c\u88ab\u5916\u90e8\u62c9\u4f4e\u7684\u5f15\u811a\u7531\u4e8e\u5185\u90e8\u7535\u963b\u7684\u539f\u56e0\uff0c\u5c06\u8f93\u51fa\u7535\u6d41\uff08IIL\uff09\u3002
\u5728\u8bbf\u95ee\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u6216\u752816\u4f4d\u5730\u5740\u8bfb\u53d6\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\uff08\u4f8b\u5982\u6267\u884cMOVX @DPTR\uff09
\u65f6\uff0cP2 \u53e3\u9001\u51fa\u9ad8\u516b\u4f4d\u5730\u5740\u3002\u5728\u8fd9\u79cd\u5e94\u7528\u4e2d\uff0cP2 \u53e3\u4f7f\u7528\u5f88\u5f3a\u7684\u5185\u90e8\u4e0a\u62c9\u53d1\u90011\u3002\u5728\u4f7f\u7528
8\u4f4d\u5730\u5740\uff08\u5982MOVX @RI\uff09\u8bbf\u95ee\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\u65f6\uff0cP2\u53e3\u8f93\u51faP2\u9501\u5b58\u5668\u7684\u5185\u5bb9\u3002
\u5728flash\u7f16\u7a0b\u548c\u6821\u9a8c\u65f6\uff0cP2\u53e3\u4e5f\u63a5\u6536\u9ad88\u4f4d\u5730\u5740\u5b57\u8282\u548c\u4e00\u4e9b\u63a7\u5236\u4fe1\u53f7\u3002
P3 \u53e3\uff1aP3 \u53e3\u662f\u4e00\u4e2a\u5177\u6709\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u76848 \u4f4d\u53cc\u5411I/O \u53e3\uff0cp2 \u8f93\u51fa\u7f13\u51b2\u5668\u80fd\u9a71\u52a84 \u4e2a
TTL \u903b\u8f91\u7535\u5e73\u3002\u5bf9P3 \u7aef\u53e3\u5199\u201c1\u201d\u65f6\uff0c\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u628a\u7aef\u53e3\u62c9\u9ad8\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f5c\u4e3a\u8f93\u5165
\u53e3\u4f7f\u7528\u3002\u4f5c\u4e3a\u8f93\u5165\u4f7f\u7528\u65f6\uff0c\u88ab\u5916\u90e8\u62c9\u4f4e\u7684\u5f15\u811a\u7531\u4e8e\u5185\u90e8\u7535\u963b\u7684\u539f\u56e0\uff0c\u5c06\u8f93\u51fa\u7535\u6d41\uff08IIL\uff09\u3002
P3\u53e3\u4ea6\u4f5c\u4e3aAT89S52\u7279\u6b8a\u529f\u80fd\uff08\u7b2c\u4e8c\u529f\u80fd\uff09\u4f7f\u7528\uff0c\u5982\u4e0b\u8868\u6240\u793a\u3002
\u5728flash\u7f16\u7a0b\u548c\u6821\u9a8c\u65f6\uff0cP3\u53e3\u4e5f\u63a5\u6536\u4e00\u4e9b\u63a7\u5236\u4fe1\u53f7\u3002
AT89S52
5
\u5f15\u811a\u53f7 \u7b2c\u4e8c\u529f\u80fd
P3.0 RXD\uff08\u4e32\u884c\u8f93\u5165\uff09
P3.1 TXD\uff08\u4e32\u884c\u8f93\u51fa\uff09
P3.2 INT0(\u5916\u90e8\u4e2d\u65ad0)
P3.3 INT0(\u5916\u90e8\u4e2d\u65ad0)
P3.4 T0\uff08\u5b9a\u65f6\u56680\u5916\u90e8\u8f93\u5165\uff09
P3.5 T1\uff08\u5b9a\u65f6\u56681\u5916\u90e8\u8f93\u5165\uff09
P3.6 WR(\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\u5199\u9009\u901a)
P3.7 RD(\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\u5199\u9009\u901a)
RST: \u590d\u4f4d\u8f93\u5165\u3002\u6676\u632f\u5de5\u4f5c\u65f6\uff0cRST\u811a\u6301\u7eed2 \u4e2a\u673a\u5668\u5468\u671f\u9ad8\u7535\u5e73\u5c06\u4f7f\u5355\u7247\u673a\u590d\u4f4d\u3002\u770b\u95e8
\u72d7\u8ba1\u65f6\u5b8c\u6210\u540e\uff0cRST \u811a\u8f93\u51fa96 \u4e2a\u6676\u632f\u5468\u671f\u7684\u9ad8\u7535\u5e73\u3002\u7279\u6b8a\u5bc4\u5b58\u5668AUXR(\u5730\u57408EH)\u4e0a
\u7684DISRTO\u4f4d\u53ef\u4ee5\u4f7f\u6b64\u529f\u80fd\u65e0\u6548\u3002DISRTO\u9ed8\u8ba4\u72b6\u6001\u4e0b\uff0c\u590d\u4f4d\u9ad8\u7535\u5e73\u6709\u6548\u3002
ALE/PROG\uff1a\u5730\u5740\u9501\u5b58\u63a7\u5236\u4fe1\u53f7\uff08ALE\uff09\u662f\u8bbf\u95ee\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u65f6\uff0c\u9501\u5b58\u4f4e8 \u4f4d\u5730\u5740
\u7684\u8f93\u51fa\u8109\u51b2\u3002\u5728flash\u7f16\u7a0b\u65f6\uff0c\u6b64\u5f15\u811a\uff08PROG\uff09\u4e5f\u7528\u4f5c\u7f16\u7a0b\u8f93\u5165\u8109\u51b2\u3002
\u5728\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cALE \u4ee5\u6676\u632f\u516d\u5206\u4e4b\u4e00\u7684\u56fa\u5b9a\u9891\u7387\u8f93\u51fa\u8109\u51b2\uff0c\u53ef\u7528\u6765\u4f5c\u4e3a\u5916\u90e8\u5b9a\u65f6\u5668\u6216
\u65f6\u949f\u4f7f\u7528\u3002\u7136\u800c\uff0c\u7279\u522b\u5f3a\u8c03\uff0c\u5728\u6bcf\u6b21\u8bbf\u95ee\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\u65f6\uff0cALE\u8109\u51b2\u5c06\u4f1a\u8df3\u8fc7\u3002
\u5982\u679c\u9700\u8981\uff0c\u901a\u8fc7\u5c06\u5730\u5740\u4e3a8EH\u7684SFR\u7684\u7b2c0\u4f4d\u7f6e \u201c1\u201d\uff0cALE\u64cd\u4f5c\u5c06\u65e0\u6548\u3002\u8fd9\u4e00\u4f4d\u7f6e \u201c1\u201d\uff0c
ALE \u4ec5\u5728\u6267\u884cMOVX \u6216MOVC\u6307\u4ee4\u65f6\u6709\u6548\u3002\u5426\u5219\uff0cALE \u5c06\u88ab\u5fae\u5f31\u62c9\u9ad8\u3002\u8fd9\u4e2aALE \u4f7f
\u80fd\u6807\u5fd7\u4f4d\uff08\u5730\u5740\u4e3a8EH\u7684SFR\u7684\u7b2c0\u4f4d\uff09\u7684\u8bbe\u7f6e\u5bf9\u5fae\u63a7\u5236\u5668\u5904\u4e8e\u5916\u90e8\u6267\u884c\u6a21\u5f0f\u4e0b\u65e0\u6548\u3002
PSEN:\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u9009\u901a\u4fe1\u53f7\uff08PSEN\uff09\u662f\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u9009\u901a\u4fe1\u53f7\u3002
\u5f53AT89S52\u4ece\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u6267\u884c\u5916\u90e8\u4ee3\u7801\u65f6\uff0cPSEN\u5728\u6bcf\u4e2a\u673a\u5668\u5468\u671f\u88ab\u6fc0\u6d3b\u4e24\u6b21\uff0c\u800c
\u5728\u8bbf\u95ee\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\u65f6\uff0cPSEN\u5c06\u4e0d\u88ab\u6fc0\u6d3b\u3002
EA/VPP:\u8bbf\u95ee\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u63a7\u5236\u4fe1\u53f7\u3002\u4e3a\u4f7f\u80fd\u4ece0000H \u5230FFFFH\u7684\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668
\u8bfb\u53d6\u6307\u4ee4\uff0cEA\u5fc5\u987b\u63a5GND\u3002
\u4e3a\u4e86\u6267\u884c\u5185\u90e8\u7a0b\u5e8f\u6307\u4ee4\uff0cEA\u5e94\u8be5\u63a5VCC\u3002
\u5728flash\u7f16\u7a0b\u671f\u95f4\uff0cEA\u4e5f\u63a5\u653612\u4f0fVPP\u7535\u538b\u3002
XTAL1:\u632f\u8361\u5668\u53cd\u76f8\u653e\u5927\u5668\u548c\u5185\u90e8\u65f6\u949f\u53d1\u751f\u7535\u8def\u7684\u8f93\u5165\u7aef\u3002
XTAL2:\u632f\u8361\u5668\u53cd\u76f8\u653e\u5927\u5668\u7684\u8f93\u51fa\u7aef\u3002
AT89S52
6
\u88681 AT89S52 \u7279\u6b8a\u5bc4\u5b58\u5668\u6620\u8c61\u53ca\u590d\u4f4d\u503c
\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668
\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668(SFR)\u7684\u5730\u5740\u7a7a\u95f4\u6620\u8c61\u5982\u88681\u6240\u793a\u3002
\u5e76\u4e0d\u662f\u6240\u6709\u7684\u5730\u5740\u90fd\u88ab\u5b9a\u4e49\u4e86\u3002\u7247\u4e0a\u6ca1\u6709\u5b9a\u4e49\u7684\u5730\u5740\u662f\u4e0d\u80fd\u7528\u7684\u3002\u8bfb\u8fd9\u4e9b\u5730\u5740\uff0c\u4e00\u822c\u5c06
\u5f97\u5230\u4e00\u4e2a\u968f\u673a\u6570\u636e\uff1b\u5199\u5165\u7684\u6570\u636e\u5c06\u4f1a\u65e0\u6548\u3002
\u7528\u6237\u4e0d\u5e94\u8be5\u7ed9\u8fd9\u4e9b\u672a\u5b9a\u4e49\u7684\u5730\u5740\u5199\u5165\u6570\u636e\u201c1\u201d\u3002\u7531\u4e8e\u8fd9\u4e9b\u5bc4\u5b58\u5668\u5728\u5c06\u6765\u53ef\u80fd\u88ab\u8d4b\u4e88\u65b0\u7684
\u529f\u80fd\uff0c\u590d\u4f4d\u540e\uff0c\u8fd9\u4e9b\u4f4d\u90fd\u4e3a\u201c0\u201d\u3002
\u5b9a\u65f6\u56682 \u5bc4\u5b58\u5668\uff1a\u5bc4\u5b58\u5668T2CON \u548cT2MOD \u5305\u542b\u5b9a\u65f6\u56682 \u7684\u63a7\u5236\u4f4d\u548c\u72b6\u6001\u4f4d\uff08\u5982\u88682
\u548c\u88683\u6240\u793a\uff09\uff0c\u5bc4\u5b58\u5668\u5bf9RCAP2H\u548cRCAP2L\u662f\u5b9a\u65f6\u56682\u7684\u6355\u6349/\u81ea\u52a8\u91cd\u8f7d\u5bc4\u5b58\u5668\u3002
\u4e2d\u65ad\u5bc4\u5b58\u5668\uff1a\u5404\u4e2d\u65ad\u5141\u8bb8\u4f4d\u5728IE\u5bc4\u5b58\u5668\u4e2d\uff0c\u516d\u4e2a\u4e2d\u65ad\u6e90\u7684\u4e24\u4e2a\u4f18\u5148\u7ea7\u4e5f\u53ef\u5728IE\u4e2d\u8bbe\u7f6e\u3002
AT89S52
7
\u88682 T2CON\uff1a\u5b9a\u65f6\u5668/\u8ba1\u6570\u56682\u63a7\u5236\u5bc4\u5b58\u5668
T2CON \u5730\u5740\u4e3a0C8H \u590d\u4f4d\u503c\uff1a0000 0000B
\u4f4d\u53ef\u5bfb\u5740
TF2 EXF2 RLCLK TCLK EXEN2 TR2
7 6 5 4 3 2 1 0
\u7b26\u53f7 \u529f\u80fd
TF2 \u5b9a\u65f6\u56682 \u6ea2\u51fa\u6807\u5fd7\u4f4d\u3002\u5fc5\u987b\u8f6f\u4ef6\u6e05\u201c0\u201d\u3002RCLK=1 \u6216TCLK=1 \u65f6\uff0cTF2
\u4e0d\u7528\u7f6e\u4f4d\u3002
EXF2
\u5b9a\u65f6\u56682 \u5916\u90e8\u6807\u5fd7\u4f4d\u3002EXEN2=1 \u65f6\uff0cT2EX \u4e0a\u7684\u8d1f\u8df3\u53d8\u800c\u51fa\u73b0\u6355\u6349\u6216\u91cd
\u8f7d\u65f6\uff0cEXF2 \u4f1a\u88ab\u786c\u4ef6\u7f6e\u4f4d\u3002\u5b9a\u65f6\u56682 \u6253\u5f00\uff0cEXF2=1 \u65f6\uff0c\u5c06\u5f15\u5bfcCPU
\u6267\u884c\u5b9a\u65f6\u56682 \u4e2d\u65ad\u7a0b\u5e8f\u3002EXF2 \u5fc5\u987b\u5982\u89c1\u6e05\u201c0\u201d\u3002\u5728\u5411\u4e0b/\u5411\u4e0a\u6280\u672f\u6a21\u5f0f
\uff08DCEN=1\uff09\u4e0bEXF2\u4e0d\u80fd\u5f15\u8d77\u4e2d\u65ad\u3002
RCLK
\u4e32\u884c\u53e3\u63a5\u6536\u6570\u636e\u65f6\u949f\u6807\u5fd7\u4f4d\u3002\u82e5RCLK=1\uff0c\u4e32\u884c\u53e3\u5c06\u4f7f\u7528\u5b9a\u65f6\u56682 \u6ea2\u51fa
\u8109\u51b2\u4f5c\u4e3a\u4e32\u884c\u53e3\u5de5\u4f5c\u6a21\u5f0f1 \u548c3 \u7684\u4e32\u53e3\u63a5\u6536\u65f6\u949f\uff1bRCLK\uff1d0\uff0c\u5c06\u4f7f\u7528\u5b9a
\u65f6\u56681\u8ba1\u6570\u6ea2\u51fa\u4f5c\u4e3a\u4e32\u53e3\u63a5\u6536\u65f6\u949f\u3002
TCLK
\u4e32\u884c\u53e3\u53d1\u9001\u6570\u636e\u65f6\u949f\u6807\u5fd7\u4f4d\u3002\u82e5TCLK=1\uff0c\u4e32\u884c\u53e3\u5c06\u4f7f\u7528\u5b9a\u65f6\u56682 \u6ea2\u51fa
\u8109\u51b2\u4f5c\u4e3a\u4e32\u884c\u53e3\u5de5\u4f5c\u6a21\u5f0f1 \u548c3 \u7684\u4e32\u53e3\u53d1\u9001\u65f6\u949f\uff1bTCLK\uff1d0\uff0c\u5c06\u4f7f\u7528\u5b9a
\u65f6\u56681\u8ba1\u6570\u6ea2\u51fa\u4f5c\u4e3a\u4e32\u53e3\u53d1\u9001\u65f6\u949f\u3002
EXEN2
\u5b9a\u65f6\u56682\u5916\u90e8\u5141\u8bb8\u6807\u5fd7\u4f4d\u3002\u5f53EXEN2=1\u65f6\uff0c\u5982\u679c\u5b9a\u65f6\u56682\u6ca1\u6709\u7528\u4f5c\u4e32\u884c
\u65f6\u949f\uff0cT2EX\uff08P1.1\uff09\u7684\u8d1f\u8df3\u53d8\u89c1\u5f15\u8d77\u5b9a\u65f6\u56682 \u6355\u6349\u548c\u91cd\u8f7d\u3002\u82e5EXEN2
\uff1d0\uff0c\u5b9a\u65f6\u56682\u5c06\u89c6T2EX\u7aef\u7684\u4fe1\u53f7\u65e0\u6548
TR2 \u5f00\u59cb/\u505c\u6b62\u63a7\u5236\u5b9a\u65f6\u56682\u3002TR2=1\uff0c\u5b9a\u65f6\u56682\u5f00\u59cb\u5de5\u4f5c
\u5b9a\u65f6\u56682 \u5b9a\u65f6/\u8ba1\u6570\u9009\u62e9\u6807\u5fd7\u4f4d\u3002\uff1d0\uff0c\u5b9a\u65f6\uff1b \uff1d1\uff0c\u5916\u90e8\u4e8b
\u4ef6\u8ba1\u6570\uff08\u4e0b\u964d\u6cbf\u89e6\u53d1\uff09
\u6355\u6349/\u91cd\u8f7d\u9009\u62e9\u6807\u5fd7\u4f4d\u3002\u5f53EXEN2=1\u65f6\uff0c \uff1d1\uff0cT2EX\u51fa\u73b0\u8d1f\u8109\u51b2\uff0c
\u4f1a\u5f15\u8d77\u6355\u6349\u64cd\u4f5c\uff1b\u5f53\u5b9a\u65f6\u56682\u6ea2\u51fa\u6216EXEN2=1\u65f6T2EX\u51fa\u73b0\u8d1f\u8df3\u53d8\uff0c\u90fd
\u4f1a\u51fa\u73b0\u81ea\u52a8\u91cd\u8f7d\u64cd\u4f5c\u3002\uff1d0 \u5c06\u5f15\u8d77T2EX \u7684\u8d1f\u8109\u51b2\u3002\u5f53RCKL=1
\u6216TCKL\uff1d1\u65f6\uff0c\u6b64\u6807\u5fd7\u4f4d\u65e0\u6548\uff0c\u5b9a\u65f6\u56682\u6ea2\u51fa\u65f6\uff0c\u5f3a\u5236\u505a\u81ea\u52a8\u91cd\u8f7d\u64cd\u4f5c\u3002
\u53cc\u6570\u636e\u6307\u9488\u5bc4\u5b58\u5668\uff1a\u4e3a\u4e86\u66f4\u6709\u5229\u4e8e\u8bbf\u95ee\u5185\u90e8\u548c\u5916\u90e8\u6570\u636e\u5b58\u50a8\u5668\uff0c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e24\u8def16\u4f4d
\u6570\u636e\u6307\u9488\u5bc4\u5b58\u5668\uff1a\u4f4d\u4e8eSFR\u4e2d82H~83H\u7684DP0\u548c\u4f4d\u4e8e84H\uff5e85\u3002\u7279\u6b8a\u5bc4\u5b58\u5668AUXR1
\u4e2dDPS\uff1d0 \u9009\u62e9DP0\uff1bDPS=1 \u9009\u62e9DP1\u3002\u7528\u6237\u5e94\u8be5\u5728\u8bbf\u95ee\u6570\u636e\u6307\u9488\u5bc4\u5b58\u5668\u524d\u5148\u521d\u59cb\u5316
AT89S52
8
DPS\u81f3\u5408\u7406\u7684\u503c\u3002
\u88683a AUXR\uff1a\u8f85\u52a9\u5bc4\u5b58\u5668
AUXR \u5730\u5740\uff1a8EH \u590d\u4f4d\u503c\uff1aXXX00XX0B
\u4e0d\u53ef\u4f4d\u5bfb\u5740
- - - WDIDLE DISRTO - - DISALE
7 6 5 4 3 2 1 0
- \u9884\u7559\u6269\u5c55\u7528
DISALE ALE\u4f7f\u80fd\u6807\u5fd7\u4f4d
DISALE \u64cd\u4f5c\u65b9\u5f0f
0 ALE \u4ee51/6\u6676\u632f\u9891\u7387\u8f93\u51fa\u4fe1\u53f7
1 ALE \u53ea\u6709\u5728\u6267\u884cMOVX \u6216MOVC\u6307\u4ee4\u65f6\u6fc0\u6d3b
DISRTO \u590d\u4f4d\u8f93\u51fa\u6807\u5fd7\u4f4d
DISRTO
0 \u770b\u95e8\u72d7\uff08WDT\uff09\u5b9a\u65f6\u7ed3\u675f\uff0cReset \u8f93\u51fa\u9ad8\u7535\u5e73
1 Reset \u53ea\u6709\u8f93\u5165
WDIDLE \u7a7a\u95f2\u6a21\u5f0f\u4e0bWDT\u4f7f\u80fd\u6807\u5fd7\u4f4d
WDIDLE
0 \u7a7a\u95f2\u6a21\u5f0f\u4e0b\uff0cWDT\u7ee7\u7eed\u8ba1\u6570
1 \u7a7a\u95f2\u6a21\u5f0f\u4e0b\uff0cWDT\u505c\u6b62\u8ba1\u6570
\u6389\u7535\u6807\u5fd7\u4f4d\uff1a\u6389\u7535\u6807\u5fd7\u4f4d\uff08POF\uff09\u4f4d\u4e8e\u7279\u6b8a\u5bc4\u5b58\u5668PCON\u7684\u7b2c\u56db\u4f4d\uff08PCON.4\uff09\u3002\u4e0a\u7535\u671f
\u95f4POF\u7f6e\u201c1\u201d\u3002POF\u53ef\u4ee5\u8f6f\u4ef6\u63a7\u5236\u4f7f\u7528\u4e0e\u5426\uff0c\u4f46\u4e0d\u53d7\u590d\u4f4d\u5f71\u54cd\u3002
\u88683b AUXR1\uff1a\u8f85\u52a9\u5bc4\u5b58\u56681
AUXR1 \u5730\u5740\uff1aA2H \u590d\u4f4d\u503c\uff1aXXXXXXX0B
\u4e0d\u53ef\u4f4d\u5bfb\u5740
\uff0d \uff0d \uff0d \uff0d \uff0d \uff0d \uff0d DPS
7 6 5 4 3 2 1 0
- \u9884\u7559\u6269\u5c55\u7528
DPS \u6570\u636e\u6307\u9488\u9009\u62e9\u4f4d
DPS
0 \u9009\u62e9DPTR\u5bc4\u5b58\u5668DP0L\u548cDP0H
1 \u9009\u62e9DPTR\u5bc4\u5b58\u5668DP1L\u548cDP1H
AT89S52
9
\u5b58\u50a8\u5668\u7ed3\u6784
MCS-51\u5668\u4ef6\u6709\u5355\u72ec\u7684\u7a0b\u5e8f\u5b58\u50a8\u5668\u548c\u6570\u636e\u5b58\u50a8\u5668\u3002\u5916\u90e8\u7a0b\u5e8f\u5b58\u50a8\u5668\u548c\u6570\u636e\u5b58\u50a8\u5668\u90fd\u53ef\u4ee5
64K\u5bfb\u5740\u3002
\u7a0b\u5e8f\u5b58\u50a8\u5668\uff1a\u5982\u679cEA\u5f15\u811a\u63a5\u5730\uff0c\u7a0b\u5e8f\u8bfb\u53d6\u53ea\u4ece\u5916\u90e8\u5b58\u50a8\u5668\u5f00\u59cb\u3002
\u5bf9\u4e8e89S52\uff0c\u5982\u679cEA \u63a5VCC\uff0c\u7a0b\u5e8f\u8bfb\u5199\u5148\u4ece\u5185\u90e8\u5b58\u50a8\u5668\uff08\u5730\u5740\u4e3a0000H\uff5e1FFFH\uff09\u5f00
\u59cb\uff0c\u63a5\u7740\u4ece\u5916\u90e8\u5bfb\u5740\uff0c\u5bfb\u5740\u5730\u5740\u4e3a\uff1a2000H~FFFFH\u3002
\u6570\u636e\u5b58\u50a8\u5668\uff1aAT89S52 \u6709256 \u5b57\u8282\u7247\u5185\u6570\u636e\u5b58\u50a8\u5668\u3002\u9ad8128 \u5b57\u8282\u4e0e\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u91cd
\u53e0\u3002\u4e5f\u5c31\u662f\u8bf4\u9ad8128\u5b57\u8282\u4e0e\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u6709\u76f8\u540c\u7684\u5730\u5740\uff0c\u800c\u7269\u7406\u4e0a\u662f\u5206\u5f00\u7684\u3002
\u5f53\u4e00\u6761\u6307\u4ee4\u8bbf\u95ee\u9ad8\u4e8e7FH \u7684\u5730\u5740\u65f6\uff0c\u5bfb\u5740\u65b9\u5f0f\u51b3\u5b9aCPU \u8bbf\u95ee\u9ad8128 \u5b57\u8282RAM \u8fd8\u662f\u7279
\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u7a7a\u95f4\u3002\u76f4\u63a5\u5bfb\u5740\u65b9\u5f0f\u8bbf\u95ee\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\uff08SFR\uff09\u3002
\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u76f4\u63a5\u5bfb\u5740\u6307\u4ee4\u8bbf\u95ee0A0H\uff08P2\u53e3\uff09\u5b58\u50a8\u5355\u5143
MOV 0A0H , #data
\u4f7f\u7528\u95f4\u63a5\u5bfb\u5740\u65b9\u5f0f\u8bbf\u95ee\u9ad8128 \u5b57\u8282RAM\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u95f4\u63a5\u5bfb\u5740\u65b9\u5f0f\u4e2d\uff0cR0 \u5185\u5bb9\u4e3a
0A0H\uff0c\u8bbf\u95ee\u7684\u662f\u5730\u57400A0H\u7684\u5bc4\u5b58\u5668\uff0c\u800c\u4e0d\u662fP2\u53e3\uff08\u5b83\u7684\u5730\u5740\u4e5f\u662f0A0H\uff09\u3002
MOV @R0 , #data
\u5806\u6808\u64cd\u4f5c\u4e5f\u662f\u7b80\u4ecb\u5bfb\u5740\u65b9\u5f0f\u3002\u56e0\u6b64\uff0c\u9ad8128\u5b57\u8282\u6570\u636eRAM\u4e5f\u53ef\u7528\u4e8e\u5806\u6808\u7a7a\u95f4\u3002
\u770b\u95e8\u72d7\u5b9a\u65f6\u5668
WDT\u662f\u4e00\u79cd\u9700\u8981\u8f6f\u4ef6\u63a7\u5236\u7684\u590d\u4f4d\u65b9\u5f0f\u3002WDT \u753113\u4f4d\u8ba1\u6570\u5668\u548c\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u4e2d\u7684\u770b
\u95e8\u72d7\u5b9a\u65f6\u5668\u590d\u4f4d\u5b58\u50a8\u5668\uff08WDTRST\uff09\u6784\u6210\u3002WDT \u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u65e0\u6cd5\u5de5\u4f5c\uff1b\u4e3a\u4e86\u6fc0\u6d3b
WDT\uff0c\u6237\u7528\u5fc5\u987b\u5f80WDTRST \u5bc4\u5b58\u5668\uff08\u5730\u5740\uff1a0A6H\uff09\u4e2d\u4f9d\u6b21\u5199\u516501EH \u548c0E1H\u3002\u5f53
WDT\u6fc0\u6d3b\u540e\uff0c\u6676\u632f\u5de5\u4f5c\uff0cWDT\u5728\u6bcf\u4e2a\u673a\u5668\u5468\u671f\u90fd\u4f1a\u589e\u52a0\u3002WDT\u8ba1\u65f6\u5468\u671f\u4f9d\u8d56\u4e8e\u5916\u90e8
\u65f6\u949f\u9891\u7387\u3002\u9664\u4e86\u590d\u4f4d\uff08\u786c\u4ef6\u590d\u4f4d\u6216WDT\u6ea2\u51fa\u590d\u4f4d\uff09\uff0c\u6ca1\u6709\u529e\u6cd5\u505c\u6b62WDT\u5de5\u4f5c\u3002\u5f53WDT
\u6ea2\u51fa\uff0c\u5b83\u5c06\u9a71\u52a8RSR\u5f15\u811a\u4e00\u4e2a\u9ad8\u4e2a\u7535\u5e73\u8f93\u51fa\u3002
WDT\u7684\u4f7f\u7528
\u4e3a\u4e86\u6fc0\u6d3bWDT\uff0c\u7528\u6237\u5fc5\u987b\u5411WDTRST\u5bc4\u5b58\u5668\uff08\u5730\u5740\u4e3a0A6H\u7684SFR\uff09\u4f9d\u6b21\u5199\u51650E1H
\u548c0E1H\u3002\u5f53WDT\u6fc0\u6d3b\u540e\uff0c\u7528\u6237\u5fc5\u987b\u5411WDTRST\u5199\u516501EH\u548c0E1H\u5582\u72d7\u6765\u907f\u514dWDT
\u6ea2\u51fa\u3002\u5f53\u8ba1\u6570\u8fbe\u52308191(1FFFH)\u65f6\uff0c13 \u4f4d\u8ba1\u6570\u5668\u5c06\u4f1a\u6ea2\u51fa\uff0c\u8fd9\u5c06\u4f1a\u590d\u4f4d\u5668\u4ef6\u3002\u6676\u632f\u6b63
\u5e38\u5de5\u4f5c\u3001WDT\u6fc0\u6d3b\u540e\uff0c\u6bcf\u4e00\u4e2a\u673a\u5668\u5468\u671fWDT \u90fd\u4f1a\u589e\u52a0\u3002\u4e3a\u4e86\u590d\u4f4dWDT\uff0c\u7528\u6237\u5fc5\u987b\u5411
WDTRST \u5199\u516501EH \u548c0E1H\uff08WDTRST \u662f\u53ea\u8bfb\u5bc4\u5b58\u5668\uff09\u3002WDT \u8ba1\u6570\u5668\u4e0d\u80fd\u8bfb\u6216\u5199\u3002
\u5f53WDT \u8ba1\u6570\u5668\u6ea2\u51fa\u65f6\uff0c\u5c06\u7ed9RST \u5f15\u811a\u4ea7\u751f\u4e00\u4e2a\u590d\u4f4d\u8109\u51b2\u8f93\u51fa\uff0c\u8fd9\u4e2a\u590d\u4f4d\u8109\u51b2\u6301\u7eed96
\u4e2a\u6676\u632f\u5468\u671f\uff08TOSC\uff09\uff0c\u5176\u4e2dTOSC=1/FOSC\u3002\u4e3a\u4e86\u5f88\u597d\u5730\u4f7f\u7528WDT\uff0c\u5e94\u8be5\u5728\u4e00\u5b9a\u65f6\u95f4
\u5185\u5468\u671f\u6027\u5199\u5165\u90a3\u90e8\u5206\u4ee3\u7801\uff0c\u4ee5\u907f\u514dWDT\u590d\u4f4d\u3002
\u6389\u7535\u548c\u7a7a\u95f2\u65b9\u5f0f\u4e0b\u7684WDT
\u5728\u6389\u7535\u6a21\u5f0f\u4e0b\uff0c\u6676\u632f\u505c\u6b62\u5de5\u4f5c\uff0c\u8fd9\u610f\u5473\u8fd9WDT\u4e5f\u505c\u6b62\u4e86\u5de5\u4f5c\u3002\u5728\u8fd9\u79cd\u65b9\u5f0f\u4e0b\uff0c\u7528\u6237\u4e0d
\u5fc5\u5582\u72d7\u3002\u6709\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u79bb\u5f00\u6389\u7535\u6a21\u5f0f\uff1a\u786c\u4ef6\u590d\u4f4d\u6216\u901a\u8fc7\u4e00\u4e2a\u6fc0\u6d3b\u7684\u5916\u90e8\u4e2d\u65ad\u3002\u901a\u8fc7\u786c
\u4ef6\u590d\u4f4d\u9000\u51fa\u6389\u7535\u6a21\u5f0f\u540e\uff0c\u7528\u6237\u5c31\u5e94\u8be5\u7ed9WDT \u5582\u72d7\uff0c\u5c31\u5982\u540c\u901a\u5e38AT89S52 \u590d\u4f4d\u4e00\u6837\u3002
\u901a\u8fc7\u4e2d\u65ad\u9000\u51fa\u6389\u7535\u6a21\u5f0f\u7684\u60c5\u5f62\u6709\u5f88\u5927\u7684\u4e0d\u540c\u3002\u4e2d\u65ad\u5e94\u6301\u7eed\u62c9\u4f4e\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\uff0c\u4f7f\u5f97\u6676\u632f
AT89S52
10
\u7a33\u5b9a\u3002\u5f53\u4e2d\u65ad\u62c9\u9ad8\u540e\uff0c\u6267\u884c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u3002\u4e3a\u4e86\u9632\u6b62WDT\u5728\u4e2d\u65ad\u4fdd\u6301\u4f4e\u7535\u5e73\u7684\u65f6\u5019\u590d
\u4f4d\u5668\u4ef6\uff0cWDT \u76f4\u5230\u4e2d\u65ad\u62c9\u4f4e\u540e\u624d\u5f00\u59cb\u5de5\u4f5c\u3002\u8fd9\u5c31\u610f\u5473\u7740WDT \u5e94\u8be5\u5728\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u4e2d
\u590d\u4f4d\u3002
\u4e3a\u4e86\u786e\u4fdd\u5728\u79bb\u5f00\u6389\u7535\u6a21\u5f0f\u6700\u521d\u7684\u51e0\u4e2a\u72b6\u6001WDT\u4e0d\u88ab\u6ea2\u51fa\uff0c\u6700\u597d\u5728\u8fdb\u5165\u6389\u7535\u6a21\u5f0f\u524d\u5c31\u590d
\u4f4dWDT\u3002
\u5728\u8fdb\u5165\u5f85\u673a\u6a21\u5f0f\u524d\uff0c\u7279\u6b8a\u5bc4\u5b58\u5668AUXR\u7684WDIDLE\u4f4d\u7528\u6765\u51b3\u5b9aWDT\u662f\u5426\u7ee7\u7eed\u8ba1\u6570\u3002
\u9ed8\u8ba4\u72b6\u6001\u4e0b\uff0c\u5728\u5f85\u673a\u6a21\u5f0f\u4e0b\uff0cWDIDLE\uff1d0\uff0cWDT\u7ee7\u7eed\u8ba1\u6570\u3002\u4e3a\u4e86\u9632\u6b62WDT\u5728\u5f85\u673a\u6a21
\u5f0f\u4e0b\u590d\u4f4dAT89S52\uff0c\u7528\u6237\u5e94\u8be5\u5efa\u7acb\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5b9a\u65f6\u79bb\u5f00\u5f85\u673a\u6a21\u5f0f\uff0c\u5582\u72d7\uff0c\u518d\u91cd\u65b0\u8fdb
\u5165\u5f85\u673a\u6a21\u5f0f\u3002
UART
\u5728AT89S52 \u4e2d\uff0cUART \u7684\u64cd\u4f5c\u4e0eAT89C51 \u548cAT89C52 \u4e00\u6837\u3002\u4e3a\u4e86\u83b7\u5f97\u66f4\u6df1\u5165\u7684\u5173\u4e8e
UART \u7684\u4fe1\u606f\uff0c\u53ef\u53c2\u8003ATMEL \u7f51\u7ad9\uff08http://www.atmel.com\uff09\u3002\u4ece\u8fd9\u4e2a\u4e3b\u9875\uff0c\u9009\u62e9
\u201cProducts\u201d\uff0c\u7136\u540e\u9009\u62e9\u201c8051-Architech Flash Microcontroller\u201d\uff0c\u518d\u9009\u62e9\u201cProduct
Overview\u201d\u5373\u53ef\u3002
\u5b9a\u65f6\u56680 \u548c\u5b9a\u65f6\u56681
\u5728AT89S52 \u4e2d\uff0c\u5b9a\u65f6\u56680 \u548c\u5b9a\u65f6\u56681 \u7684\u64cd\u4f5c\u4e0eAT89C51 \u548cAT89C52 \u4e00\u6837\u3002\u4e3a\u4e86\u83b7\u5f97
\u66f4\u6df1\u5165\u7684\u5173\u4e8eUART \u7684\u4fe1\u606f\uff0c\u53ef\u53c2\u8003ATMEL \u7f51\u7ad9\uff08http://www.atmel.com\uff09\u3002\u4ece\u8fd9\u4e2a\u4e3b
\u9875\uff0c\u9009\u62e9\u201cProducts\u201d\uff0c\u7136\u540e\u9009\u62e9\u201c8051-Architech Flash Microcontroller\u201d\uff0c\u518d\u9009\u62e9\u201cProduct
Overview\u201d\u5373\u53ef\u3002
\u5b9a\u65f6\u56682
\u5b9a\u65f6\u56682\u662f\u4e00\u4e2a16\u4f4d\u5b9a\u65f6/\u8ba1\u6570\u5668\uff0c\u5b83\u65e2\u53ef\u4ee5\u505a\u5b9a\u65f6\u5668\uff0c\u53c8\u53ef\u4ee5\u505a\u4e8b\u4ef6\u8ba1\u6570\u5668\u3002\u5176\u5de5\u4f5c
\u65b9\u5f0f\u7531\u7279\u6b8a\u5bc4\u5b58\u5668T2CON\u4e2d\u7684C/T2\u4f4d\u9009\u62e9\uff08\u5982\u88682\u6240\u793a\uff09\u3002\u5b9a\u65f6\u56682\u6709\u4e09\u79cd\u5de5\u4f5c\u6a21\u5f0f\uff1a
\u6355\u6349\u65b9\u5f0f\u3001\u81ea\u52a8\u91cd\u8f7d\uff08\u5411\u4e0b\u6216\u5411\u4e0a\u8ba1\u6570\uff09\u548c\u6ce2\u7279\u7387\u53d1\u751f\u5668\u3002\u5982\u88683 \u6240\u793a\uff0c\u5de5\u4f5c\u6a21\u5f0f\u7531
T2CON\u4e2d\u7684\u76f8\u5173\u4f4d\u9009\u62e9\u3002\u5b9a\u65f6\u56682 \u67092 \u4e2a8\u4f4d\u5bc4\u5b58\u5668\uff1aTH2\u548cTL2\u3002\u5728\u5b9a\u65f6\u5de5\u4f5c\u65b9\u5f0f
\u4e2d\uff0c\u6bcf\u4e2a\u673a\u5668\u5468\u671f\uff0cTL2 \u5bc4\u5b58\u5668\u90fd\u4f1a\u52a01\u3002\u7531\u4e8e\u4e00\u4e2a\u673a\u5668\u5468\u671f\u753112 \u4e2a\u6676\u632f\u5468\u671f\u6784\u6210\uff0c
\u56e0\u6b64\uff0c\u8ba1\u6570\u9891\u7387\u5c31\u662f\u6676\u632f\u9891\u7387\u76841/12\u3002
\u88683 \u5b9a\u65f6\u56682\u5de5\u4f5c\u6a21\u5f0f
RCLK+TCLK CP/RL2 TR2 MODE
0 0 1 16\u4f4d\u81ea\u52a8\u91cd\u8f7d
0 1 1 16\u4f4d\u6355\u6349
1 \u00d7 1 \u6ce2\u7279\u7387\u53d1\u751f\u5668
\u00d7 \u00d7 0 \uff08\u4e0d\u7528\uff09
\u5728\u8ba1\u6570\u5de5\u4f5c\u65b9\u5f0f\u4e0b\uff0c\u5bc4\u5b58\u5668\u5728\u76f8\u5173\u5916\u90e8\u8f93\u5165\u89d2T2 \u53d1\u751f1 \u81f30 \u7684\u4e0b\u964d\u6cbf\u65f6\u589e\u52a01\u3002\u5728\u8fd9
AT89S52
11
\u79cd\u65b9\u5f0f\u4e0b\uff0c\u6bcf\u4e2a\u673a\u5668\u5468\u671f\u7684S5P2\u671f\u95f4\u91c7\u6837\u5916\u90e8\u8f93\u5165\u3002\u4e00\u4e2a\u673a\u5668\u5468\u671f\u91c7\u6837\u5230\u9ad8\u7535\u5e73\uff0c\u800c
\u4e0b\u4e00\u4e2a\u5468\u671f\u91c7\u6837\u5230\u4f4e\u7535\u5e73\uff0c\u8ba1\u6570\u5668\u5c06\u52a01\u3002\u5728\u68c0\u6d4b\u5230\u8df3\u53d8\u7684\u8fd9\u4e2a\u5468\u671f\u7684S3P1 \u671f\u95f4\uff0c\u65b0
\u7684\u8ba1\u6570\u503c\u51fa\u73b0\u5728\u5bc4\u5b58\u5668\u4e2d\u3002\u56e0\u4e3a\u8bc6\u522b1\uff0d0\u7684\u8df3\u53d8\u9700\u89812\u4e2a\u673a\u5668\u5468\u671f\uff0824\u4e2a\u6676\u632f\u5468\u671f\uff09\uff0c
\u6240\u4ee5\uff0c\u6700\u5927\u7684\u8ba1\u6570\u9891\u7387\u4e0d\u9ad8\u4e8e\u6676\u632f\u9891\u7387\u76841/24\u3002\u4e3a\u4e86\u786e\u4fdd\u7ed9\u5b9a\u7684\u7535\u5e73\u5728\u6539\u53d8\u524d\u91c7\u6837\u5230
\u4e00\u6b21\uff0c\u7535\u5e73\u5e94\u8be5\u81f3\u5c11\u5728\u4e00\u4e2a\u5b8c\u6574\u7684\u673a\u5668\u5468\u671f\u5185\u4fdd\u6301\u4e0d\u53d8\u3002
\u6355\u6349\u65b9\u5f0f
\u5728\u6355\u6349\u6a21\u5f0f\u4e0b\uff0c\u901a\u8fc7T2CON\u4e2d\u7684EXEN2\u6765\u9009\u62e9\u4e24\u79cd\u65b9\u5f0f\u3002\u5982\u679cEXEN2=0\uff0c\u5b9a\u65f6\u56682
\u65f6\u4e00\u4e2a16\u4f4d\u5b9a\u65f6/\u8ba1\u6570\u5668\uff0c\u6ea2\u51fa\u65f6\uff0c\u5bf9T2CON \u7684TF2\u6807\u5fd7\u7f6e\u4f4d\uff0cTF2\u5f15\u8d77\u4e2d\u65ad\u3002\u5982\u679c
EXEN2=1\uff0c\u5b9a\u65f6\u56682\u505a\u76f8\u540c\u7684\u64cd\u4f5c\u3002\u9664\u4e0a\u8ff0\u529f\u80fd\u5916\uff0c\u5916\u90e8\u8f93\u5165T2EX\u5f15\u811a\uff08P1.1\uff091\u81f3
0\u7684\u4e0b\u8df3\u53d8\u4e5f\u4f1a\u4f7f\u5f97TH2\u548cTL2\u4e2d\u7684\u503c\u5206\u522b\u6355\u6349\u5230RCAP2H\u548cRCAP2L\u4e2d\u3002\u9664\u6b64\u4e4b\u5916\uff0c
T2EX \u7684\u8df3\u53d8\u4f1a\u5f15\u8d77T2CON \u4e2d\u7684EXF2 \u7f6e\u4f4d\u3002\u50cfTF2 \u4e00\u6837\uff0cT2EX \u4e5f\u4f1a\u5f15\u8d77\u4e2d\u65ad\u3002\u6355
\u6349\u6a21\u5f0f\u5982\u56fe5\u6240\u793a\u3002
\u56fe5 \u5b9a\u65f6\u5668\u7684\u6355\u6349\u6a21\u5f0f
\u81ea\u52a8\u91cd\u8f7d
\u5f53\u5b9a\u65f6\u56682 \u5de5\u4f5c\u4e8e16 \u4f4d\u81ea\u52a8\u91cd\u8f7d\u6a21\u5f0f\uff0c\u53ef\u5bf9\u5176\u7f16\u7a0b\u5b9e\u73b0\u5411\u4e0a\u8ba1\u6570\u6216\u5411\u4e0b\u8ba1\u6570\u3002\u8fd9\u4e00\u529f
\u80fd\u53ef\u4ee5\u901a\u8fc7\u7279\u6b8a\u5bc4\u5b58\u5668T2MOD\uff08\u89c1\u88684\uff09\u4e2d\u7684DCEN\uff08\u5411\u4e0b\u8ba1\u6570\u5141\u8bb8\u4f4d\uff09\u6765\u5b9e\u73b0\u3002\u901a
\u8fc7\u590d\u4f4d\uff0cDCEN \u88ab\u7f6e\u4e3a0\uff0c\u56e0\u6b64\uff0c\u5b9a\u65f6\u56682 \u9ed8\u8ba4\u4e3a\u5411\u4e0a\u8ba1\u6570\u3002DCEN \u8bbe\u7f6e\u540e\uff0c\u5b9a\u65f6\u56682
\u5c31\u53ef\u4ee5\u53d6\u51b3\u4e8eT2EX\u5411\u4e0a\u3001\u5411\u4e0b\u8ba1\u6570\u3002
\u5982\u56fe6 \u6240\u793a\uff0cDCEN=0 \u65f6\uff0c\u5b9a\u65f6\u56682 \u81ea\u52a8\u8ba1\u6570\u3002\u901a\u8fc7T2CON \u4e2d\u7684EXEN2 \u4f4d\u53ef\u4ee5\u9009\u62e9
\u4e24\u79cd\u65b9\u5f0f\u3002\u5982\u679cEXEN2=0\uff0c\u5b9a\u65f6\u56682\u8ba1\u6570\uff0c\u8ba1\u52300FFFFH\u540e\u7f6e\u4f4dTF2\u6ea2\u51fa\u6807\u5fd7\u3002\u8ba1\u6570
\u6ea2\u51fa\u4e5f\u4f7f\u5f97\u5b9a\u65f6\u5668\u5bc4\u5b58\u5668\u91cd\u65b0\u4eceRCAP2H \u548cRCAP2L \u4e2d\u52a0\u8f7d16 \u4f4d\u503c\u3002\u5b9a\u65f6\u5668\u5de5\u4f5c\u4e8e
\u6355\u6349\u6a21\u5f0f\uff0cRCAP2H\u548cRCAP2L\u7684\u503c\u53ef\u4ee5\u7531\u8f6f\u4ef6\u9884\u8bbe\u3002\u5982\u679cEXEN2=1\uff0c\u8ba1\u6570\u6ea2\u51fa\u6216\u5728
\u5916\u90e8T2EX\uff08P1.1\uff09\u5f15\u811a\u4e0a\u76841\u52300\u7684\u4e0b\u8df3\u53d8\u90fd\u4f1a\u89e6\u53d116\u4f4d\u91cd\u8f7d\u3002\u8fd9\u4e2a\u8df3\u53d8\u4e5f\u7f6e\u4f4dEXF2
\u4e2d\u65ad\u6807\u5fd7\u4f4d\u3002
\u5982\u56fe6\u6240\u793a\uff0c\u7f6e\u4f4dDCEN\uff0c\u5141\u8bb8\u5b9a\u65f6\u56682\u5411\u4e0a\u6216\u5411\u4e0b\u8ba1\u6570\u3002\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0cT2EX\u5f15\u811a
\u63a7\u5236\u7740\u8ba1\u6570\u7684\u65b9\u5411\u3002T2EX\u4e0a\u7684\u4e00\u4e2a\u903b\u8f911\u4f7f\u5f97\u5b9a\u65f6\u56682\u5411\u4e0a\u8ba1\u6570\u3002\u5b9a\u65f6\u5668\u8ba1\u52300FFFFH
AT89S52
12
\u6ea2\u51fa\uff0c\u5e76\u7f6e\u4f4dTF2\u3002\u5b9a\u65f6\u5668\u7684\u6ea2\u51fa\u4e5f\u4f7f\u5f97RCAP2H\u548cRCAP2L\u4e2d\u768416\u4f4d\u503c\u5206\u522b\u52a0\u8f7d\u5230
\u5b9a\u65f6\u5668\u5b58\u50a8\u5668TH2\u548cTL2\u4e2d\u3002
T2EX \u4e0a\u7684\u4e00\u4e2a\u903b\u8f910 \u4f7f\u5f97\u5b9a\u65f6\u56682 \u5411\u4e0b\u8ba1\u6570\u3002\u5f53TH2 \u548cTL2 \u5206\u522b\u7b49\u4e8eRCAP2H \u548c
RCAP2L\u4e2d\u7684\u503c\u7684\u65f6\u5019\uff0c\u8ba1\u6570\u5668\u4e0b\u6ea2\u3002\u8ba1\u6570\u5668\u4e0b\u6ea2\uff0c\u7f6e\u4f4dTF2\uff0c\u5e76\u5c060FFFFH\u52a0\u8f7d\u5230\u5b9a
\u65f6\u5668\u5b58\u50a8\u5668\u4e2d\u3002
\u5b9a\u65f6\u56682\u4e0a\u6ea2\u6216\u4e0b\u6ea2\uff0c\u5916\u90e8\u4e2d\u65ad\u6807\u5fd7\u4f4dEXF2 \u88ab\u9501\u6b7b\u3002\u5728\u8fd9\u79cd\u5de5\u4f5c\u6a21\u5f0f\u4e0b\uff0cEXF2\u4e0d\u80fd
\u89e6\u53d1\u4e2d\u65ad\u3002
\u56fe6 \u5b9a\u65f6\u56682\u91cd\u8f7d\u6a21\u5f0f\uff08DCEN=0\uff09
\u88684 T2MOD-\u5b9a\u65f6\u56682\u63a7\u5236\u5bc4\u5b58\u5668
T2MOD \u5730\u5740\uff1a0C9H \u590d\u4f4d\u503c\uff1aXXXXXX00B
\u4e0d\u53ef\u4f4d\u5bfb\u5740
\uff0d \uff0d \uff0d \uff0d \uff0d \uff0d T2OE DCEN
7 6 5 4 3 2 1 0
\u7b26\u53f7 \u529f\u80fd
- \u65e0\u5b9a\u4e49\uff0c\u9884\u7559\u6269\u5c55
T2OE \u5b9a\u65f6\u56682\u8f93\u51fa\u5141\u8bb8\u4f4d
DCEN \u7f6e1\u540e\uff0c\u5b9a\u65f6\u56682\u53ef\u914d\u7f6e\u6210\u5411\u4e0a/\u5411\u4e0b\u8ba1\u6570
AT89S52
13
\u56fe7 \u5b9a\u65f6\u56682\u81ea\u52a8\u91cd\u8f7d\uff08DCEN=1\uff09
\u56fe8 \u5b9a\u65f6\u56682 \u6ce2\u7279\u7387\u53d1\u751f\u5668\u6a21\u5f0f
AT89S52
14
\u6ce2\u7279\u7387\u53d1\u751f\u5668
\u901a\u8fc7\u8bbe\u7f6eT2CON\uff08\u89c1\u88682\uff09\u4e2d\u7684TCLK\u6216RCLK\u53ef\u9009\u62e9\u5b9a\u65f6\u56682 \u4f5c\u4e3a\u6ce2\u7279\u7387\u53d1\u751f\u5668\u3002
\u5982\u679c\u5b9a\u65f6\u56682\u4f5c\u4e3a\u53d1\u9001\u6216\u63a5\u6536\u6ce2\u7279\u7387\u53d1\u751f\u5668\uff0c\u5b9a\u65f6\u56681\u53ef\u7528\u4f5c\u5b83\u7528\uff0c\u53d1\u9001\u548c\u63a5\u6536\u7684\u6ce2\u7279
\u7387\u53ef\u4ee5\u4e0d\u540c\u3002\u5982\u56fe8 \u6240\u793a\uff0c\u8bbe\u7f6eRCLK \u548c\uff08\u6216\uff09TCLK \u53ef\u4ee5\u4f7f\u5b9a\u65f6\u56682 \u5de5\u4f5c\u4e8e\u6ce2\u7279\u7387
\u4ea7\u751f\u6a21\u5f0f\u3002
\u6ce2\u7279\u7387\u4ea7\u751f\u5de5\u4f5c\u6a21\u5f0f\u4e0e\u81ea\u52a8\u91cd\u8f7d\u6a21\u5f0f\u76f8\u4f3c\uff0c\u56e0\u6b64\uff0cTH2 \u7684\u7ffb\u8f6c\u4f7f\u5f97\u5b9a\u65f6\u56682 \u5bc4\u5b58\u5668\u91cd
\u8f7d\u88ab\u8f6f\u4ef6\u9884\u7f6e16\u4f4d\u503c\u7684RCAP2H\u548cRCAP2L\u4e2d\u7684\u503c\u3002
\u6a21\u5f0f1\u548c\u6a21\u5f0f3\u7684\u6ce2\u7279\u7387\u7531\u5b9a\u65f6\u56682\u6ea2\u51fa\u901f\u7387\u51b3\u5b9a\uff0c\u5177\u4f53\u5982\u4e0b\u516c\u5f0f\uff1a
\u6a21\u5f0f1\u548c\u6a21\u5f0f3\u6ce2\u7279\u7387\uff1d
16
\u5b9a\u65f6\u56682\u6ea2\u51fa\u7387
\u5b9a\u65f6\u5668\u53ef\u8bbe\u7f6e\u6210\u5b9a\u65f6\u5668\uff0c\u4e5f\u53ef\u4e3a\u8ba1\u6570\u5668\u3002\u5728\u591a\u6570\u5e94\u7528\u60c5\u51b5\u4e0b\uff0c\u4e00\u822c\u914d\u7f6e\u6210\u5b9a\u65f6\u65b9\u5f0f
\uff08CP/T2=0\uff09\u3002\u5b9a\u65f6\u56682 \u7528\u4e8e\u5b9a\u65f6\u5668\u64cd\u4f5c\u4e0e\u6ce2\u7279\u7387\u53d1\u751f\u5668\u6709\u6240\u4e0d\u540c\uff0c\u5b83\u5728\u6bcf\u4e00\u673a\u5668\u5468\u671f
\uff081/12\u6676\u632f\u5468\u671f\uff09\u90fd\u4f1a\u589e\u52a0\uff1b\u7136\u800c\uff0c\u4f5c\u4e3a\u6ce2\u7279\u7387\u53d1\u751f\u5668\uff0c\u5b83\u5728\u6bcf\u4e00\u673a\u5668\u72b6\u6001\uff081/2\u6676\u632f
\u5468\u671f\uff09\u90fd\u4f1a\u589e\u52a0\u3002\u6ce2\u7279\u7387\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a
\u6a21\u5f0f1\u548c\u6a21\u5f0f3\u7684\u6ce2\u7279\u7387\uff1d
32´[65536 - (RCAP2H,RCAP2L)]
\u6676\u632f\u9891\u7387*\u539f\u6587\u5c11\u534a\u4e2a\u62ec\u53f7\u201c(\u201d
\u5176\u4e2d\uff0c\uff08RCAP2H,RCAP2L\uff09\u662fRCAP2H\u548cRCAP2L\u7ec4\u6210\u768416\u4f4d\u65e0\u7b26\u53f7\u6574\u6570\u3002
\u5b9a\u65f6\u56682 \u4f5c\u4e3a\u6ce2\u7279\u7387\u53d1\u751f\u5668\uff0c\u5982\u56fe8 \u6240\u793a\u3002\u56fe\u4e2d\u4ec5\u4ec5\u5728T2CON \u4e2dRCLK \u6216TCLK\uff1d1
\u624d\u6709\u6548\u3002\u7279\u522b\u5f3a\u8c03\uff0cTH2\u7684\u7ffb\u8f6c\u5e76\u4e0d\u7f6e\u4f4dTF2\uff0c\u4e5f\u4e0d\u4ea7\u751f\u4e2d\u65ad\uff1b EXEN2\u7f6e\u4f4d\u540e\uff0cT2EX
\u5f15\u811a\u4e0a1\uff5e0\u7684\u4e0b\u8df3\u53d8\u4e0d\u4f1a\u4f7f\uff08RCAP2H\uff0cRCAP2L\uff09\u91cd\u8f7d\u5230\uff08TH2\uff0cTL2\uff09\u4e2d\u3002\u56e0\u6b64\uff0c
\u5b9a\u65f6\u56682\u4f5c\u4e3a\u6ce2\u7279\u7387\u53d1\u751f\u5668\uff0cT2EX\u4e5f\u8fd8\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u989d\u5916\u7684\u5916\u90e8\u4e2d\u65ad\u3002
\u5b9a\u65f6\u56682\u5904\u4e8e\u6ce2\u7279\u7387\u4ea7\u751f\u6a21\u5f0f\uff0cTR2=1\uff0c\u5b9a\u65f6\u56682\u6b63\u5e38\u5de5\u4f5c\u3002TH2\u6216TL2\u4e0d\u5e94\u8be5\u8bfb\u5199\u3002
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\u8bfb\uff0c\u4f46\u4e0d\u80fd\u5199\uff0c\u56e0\u4e3a\u5199\u53ef\u80fd\u548c\u91cd\u8f7d\u4ea4\u8fed\uff0c\u9020\u6210\u5199\u548c\u91cd\u8f7d\u9519\u8bef\u3002\u5728\u8bfb\u5199\u5b9a\u65f6\u56682 \u6216RCAP2
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\u53ef\u7f16\u7a0b\u65f6\u949f\u8f93\u51fa
\u5982\u56fe9 \u6240\u793a\uff0c\u53ef\u4ee5\u901a\u8fc7\u7f16\u7a0b\u5728P1.0 \u5f15\u811a\u8f93\u51fa\u4e00\u4e2a\u5360\u7a7a\u6bd4\u4e3a50%\u7684\u65f6\u949f\u4fe1\u53f7\u3002\u8fd9\u4e2a\u5f15\u811a
\u9664\u4e86\u5e38\u89c4\u7684I/O \u89d2\u5916\uff0c\u8fd8\u6709\u4e24\u79cd\u53ef\u9009\u62e9\u529f\u80fd\u3002\u5b83\u53ef\u4ee5\u901a\u8fc7\u7f16\u7a0b\u4f5c\u4e3a\u5b9a\u65f6\u5668/\u8ba1\u6570\u56682 \u7684
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\u56f4\u4e3a61HZ\u52304HZ\u3002
\u4e3a\u4e86\u628a\u5b9a\u65f6\u56682\u914d\u7f6e\u6210\u65f6\u949f\u53d1\u751f\u5668\uff0c\u4f4dC/T2\uff08T2CON.1\uff09\u5fc5\u987b\u6e050\uff0c\u4f4dT2OE\uff08T2MOD.1\uff09
\u5fc5\u987b\u7f6e1\u3002\u4f4dTR2\uff08T2CON.2\uff09\u542f\u52a8\u3001\u505c\u6b62\u5b9a\u65f6\u5668\u3002\u65f6\u949f\u8f93\u51fa\u9891\u7387\u53d6\u51b3\u4e8e\u6676\u632f\u9891\u7387\u548c\u5b9a
\u65f6\u56682\u6355\u6349\u5bc4\u5b58\u5668\uff08RCAP2H\uff0cRCAP2L\uff09\u7684\u91cd\u8f7d\u503c\uff0c\u5982\u516c\u5f0f\u6240\u793a\uff1a
\u65f6\u949f\u8f93\u51fa\u9891\u7387\uff1d
4 [65536\uff0d\uff08 2 , 2 \uff09]
\u6676\u632f\u9891\u7387
´ RCAP H RCAP L
\u5728\u65f6\u949f\u8f93\u51fa\u6a21\u5f0f\u4e0b\uff0c\u5b9a\u65f6\u56682\u4e0d\u4f1a\u4ea7\u751f\u4e2d\u65ad\uff0c\u8fd9\u548c\u5b9a\u65f6\u56682\u7528\u4f5c\u6ce2\u7279\u7387\u53d1\u751f\u5668\u4e00\u6837\u3002\u5b9a
AT89S52
15
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\u4e0d\u72ec\u7acb\uff0c\u5b83\u4eec\u90fd\u4f9d\u8d56\u4e8eRCAP2H\u548cRCAP2L\u3002
\u56fe9 \u5b9a\u65f6\u56682\u65f6\u949f\u8f93\u51fa\u6a21\u5f0f
\u4e2d\u65ad
AT89S52 \u67096\u4e2a\u4e2d\u65ad\u6e90\uff1a\u4e24\u4e2a\u5916\u90e8\u4e2d\u65ad\uff08INT0 \u548cINT1\uff09\uff0c\u4e09\u4e2a\u5b9a\u65f6\u4e2d\u65ad\uff08\u5b9a\u65f6\u56680\u30011\u3001
2\uff09\u548c\u4e00\u4e2a\u4e32\u884c\u4e2d\u65ad\u3002\u8fd9\u4e9b\u4e2d\u65ad\u5982\u56fe10\u6240\u793a
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AT89S52
16
\u88684 \u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u5bc4\u5b58\u5668\uff08IE\uff09
\uff08MSB\uff09 \uff08LSB\uff09
EA \uff0d ET2 ES ET1 EX1 ET0 EX0
\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d\uff1d1\uff0c\u5141\u8bb8\u4e2d\u65ad
\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d\uff1d0\uff0c\u7981\u6b62\u4e2d\u65ad
\u7b26\u53f7 \u4f4d\u5730\u5740 \u529f\u80fd
EA IE.7 \u4e2d\u65ad\u603b\u5141\u8bb8\u63a7\u5236\u4f4d\u3002EA=0\uff0c\u4e2d\u65ad\u603b\u7981\u6b62\uff1bEA=1\uff0c\u5404\u4e2d\u65ad\u7531\u5404
\u81ea\u7684\u63a7\u5236\u4f4d\u8bbe\u5b9a
- IE.6 \u9884\u7559
ET2 IE.5 \u5b9a\u65f6\u56682\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d
ES IE.4 \u4e32\u884c\u53e3\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d
ET1 IE.3 \u5b9a\u65f6\u56681\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d
EX1 IE.2 \u5916\u90e8\u4e2d\u65ad1\u5141\u8bb8\u63a7\u5236\u4f4d
ET0 IE.1 \u5b9a\u65f6\u56680\u4e2d\u65ad\u5141\u8bb8\u63a7\u5236\u4f4d
EX0 IE.0 \u5916\u90e8\u4e2d\u65ad1\u5141\u8bb8\u63a7\u5236\u4f4d
\u56fe10 \u4e2d\u65ad\u6e90
AT89S52
17
\u6676\u632f\u7279\u6027
\u5982\u56fe10 \u6240\u793a\uff0cAT89S52 \u5355\u7247\u673a\u6709\u4e00\u4e2a\u7528\u4e8e\u6784\u6210\u5185\u90e8\u632f\u8361\u5668\u7684\u53cd\u76f8\u653e\u5927\u5668\uff0cXTAL1 \u548c
XTAL2 \u5206\u522b\u662f\u653e\u5927\u5668\u7684\u8f93\u5165\u3001\u8f93\u51fa\u7aef\u3002\u77f3\u82f1\u6676\u4f53\u548c\u9676\u74f7\u8c10\u632f\u5668\u90fd\u53ef\u4ee5\u7528\u6765\u4e00\u8d77\u6784\u6210\u81ea
\u6fc0\u632f\u8361\u5668\u3002\u4ece\u5916\u90e8\u65f6\u949f\u6e90\u9a71\u52a8\u5668\u4ef6\u7684\u8bdd\uff0cXTAL2 \u53ef\u4ee5\u4e0d\u63a5\uff0c\u800c\u4eceXTAL1 \u63a5\u5165\uff0c\u5982\u56fe
12 \u6240\u793a\u3002\u7531\u4e8e\u5916\u90e8\u65f6\u949f\u4fe1\u53f7\u7ecf\u8fc7\u4e8c\u5206\u9891\u89e6\u53d1\u540e\u4f5c\u4e3a\u5916\u90e8\u65f6\u949f\u7535\u8def\u8f93\u5165\u7684\uff0c\u6240\u4ee5\u5bf9\u5916\u90e8
\u65f6\u949f\u4fe1\u53f7\u7684\u5360\u7a7a\u6bd4\u6ca1\u6709\u5176\u5b83\u8981\u6c42\uff0c\u6700\u957f\u4f4e\u7535\u5e73\u6301\u7eed\u65f6\u95f4\u548c\u6700\u5c11\u9ad8\u7535\u5e73\u6301\u7eed\u65f6\u95f4\u7b49\u8fd8\u662f\u8981
\u7b26\u5408\u8981\u6c42\u7684\u3002
\u56fe11 \u5185\u90e8\u632f\u8361\u7535\u8def\u8fde\u63a5\u56fe \u56fe12 \u5916\u90e8\u632f\u8361\u7535\u8def\u8fde\u63a5\u56fe
\u77f3\u82f1\u6676\u632f C1,C2=30PF\u00b110PF
\u9676\u74f7\u8c10\u632f\u5668 C1,C2=40PF\u00b110PF
\u7a7a\u95f2\u6a21\u5f0f
\u5728\u7a7a\u95f2\u5de5\u4f5c\u6a21\u5f0f\u4e0b\uff0cCPU \u5904\u4e8e\u7761\u7720\u72b6\u6001\uff0c\u800c\u6240\u6709\u7247\u4e0a\u5916\u90e8\u8bbe\u5907\u4fdd\u6301\u6fc0\u6d3b\u72b6\u6001\u3002\u8fd9\u79cd\u72b6
\u6001\u53ef\u4ee5\u901a\u8fc7\u8f6f\u4ef6\u4ea7\u751f\u3002\u5728\u8fd9\u79cd\u72b6\u6001\u4e0b\uff0c\u7247\u4e0aRAM\u548c\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u7684\u5185\u5bb9\u4fdd\u6301\u4e0d\u53d8\u3002
\u7a7a\u95f2\u6a21\u5f0f\u53ef\u4ee5\u88ab\u4efb\u4e00\u4e2a\u4e2d\u65ad\u6216\u786c\u4ef6\u590d\u4f4d\u7ec8\u6b62\u3002
\u7531\u786c\u4ef6\u590d\u4f4d\u7ec8\u6b62\u7a7a\u95f2\u6a21\u5f0f\u53ea\u9700\u4e24\u4e2a\u673a\u5668\u5468\u671f\u6709\u6548\u590d\u4f4d\u4fe1\u53f7\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7247\u4e0a\u786c\u4ef6\u7981
\u6b62\u8bbf\u95ee\u5185\u90e8RAM\uff0c\u800c\u53ef\u4ee5\u8bbf\u95ee\u7aef\u53e3\u5f15\u811a\u3002\u7a7a\u95f2\u6a21\u5f0f\u88ab\u786c\u4ef6\u590d\u4f4d\u7ec8\u6b62\u540e\uff0c\u4e3a\u4e86\u9632\u6b62\u9884\u60f3
\u4e0d\u5230\u7684\u5199\u7aef\u53e3\uff0c\u6fc0\u6d3b\u7a7a\u95f2\u6a21\u5f0f\u7684\u90a3\u4e00\u6761\u6307\u4ee4\u7684\u4e0b\u4e00\u6761\u6307\u4ee4\u4e0d\u5e94\u8be5\u662f\u5199\u7aef\u53e3\u6216\u5916\u90e8\u5b58\u50a8
\u5668\u3002
\u6389\u7535\u6a21\u5f0f
\u5728\u6389\u7535\u6a21\u5f0f\u4e0b\uff0c\u6676\u632f\u505c\u6b62\u5de5\u4f5c\uff0c\u6fc0\u6d3b\u6389\u7535\u6a21\u5f0f\u7684\u6307\u4ee4\u662f\u6700\u540e\u4e00\u6761\u6267\u884c\u6307\u4ee4\u3002\u7247\u4e0aRAM
AT89S52
18
\u548c\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u4fdd\u6301\u539f\u503c\uff0c\u76f4\u5230\u6389\u7535\u6a21\u5f0f\u7ec8\u6b62\u3002\u6389\u7535\u6a21\u5f0f\u53ef\u4ee5\u901a\u8fc7\u786c\u4ef6\u590d\u4f4d\u548c\u5916\u90e8\u4e2d
\u65ad\u9000\u51fa\u3002\u590d\u4f4d\u91cd\u65b0\u5b9a\u4e49\u4e86SFR \u7684\u503c\uff0c\u4f46\u4e0d\u6539\u53d8\u7247\u4e0aRAM \u7684\u503c\u3002\u5728VCC\u672a\u6062\u590d\u5230\u6b63\u5e38
\u5de5\u4f5c\u7535\u538b\u65f6\uff0c\u786c\u4ef6\u590d\u4f4d\u4e0d\u80fd\u65e0\u6548\uff0c\u5e76\u4e14\u5e94\u4fdd\u6301\u8db3\u591f\u957f\u7684\u65f6\u95f4\u4ee5\u4f7f\u6676\u632f\u91cd\u65b0\u5de5\u4f5c\u548c\u521d\u59cb\u5316\u3002
\u88686 \u7a7a\u95f2\u6a21\u5f0f\u548c\u6389\u7535\u6a21\u5f0f\u4e0b\u7684\u5916\u90e8\u5f15\u811a\u72b6\u6001
\u6a21\u5f0f \u7a0b\u5e8f\u5b58\u50a8\u5668 ALE PSEN PORT0 PORT1 PORT2 PORT3
\u7a7a\u95f2 \u5185\u90e8 1 1 \u6570\u636e \u6570\u636e \u6570\u636e \u6570\u636e
\u7a7a\u95f2 \u5916\u90e8 1 1 \u6d6e\u7a7a \u6570\u636e \u5730\u5740 \u6570\u636e
\u6389\u7535 \u5185\u90e8 0 0 \u6570\u636e \u6570\u636e \u6570\u636e \u6570\u636e
\u6389\u7535 \u5916\u90e8 0 0 \u6d6e\u7a7a \u6570\u636e \u6570\u636e \u6570\u636e
\u7a0b\u5e8f\u5b58\u50a8\u5668\u7684\u52a0\u5bc6\u4f4d
AT89S52\u6709\u4e09\u4e2a\u52a0\u5bc6\u4f4d\u4e0d\u53ef\u7f16\u7a0b\uff08U\uff09\u548c\u53ef\u7f16\u7a0b\u83b7\u5f97\u4e0b\u8868\u6240\u793a\u7684\u529f\u80fd\u3002
\u88687 \u52a0\u5bc6\u4f4d\u4fdd\u62a4\u6a21\u5f0f
\u52a0\u5bc6\u4f4d1\uff08LB1\uff09\u7f16\u7a0b\u540e\uff0cEA \u5f15\u811a\u7684\u903b\u8f91\u503c\u88ab\u91c7\u6837\uff0c\u5e76\u5728\u590d\u4f4d\u671f\u95f4\u9501\u5b58\u3002\u5982\u679c\u5668\u4ef6\u590d
\u4f4d\uff0c\u800c\u6ca1\u6709\u590d\u4f4d\uff0c\u5c06\u9501\u5b58\u4e00\u4e2a\u968f\u673a\u503c\uff0c\u76f4\u5230\u590d\u4f4d\u4e3a\u6b62\u3002\u4e3a\u4e86\u5668\u4ef6\u529f\u80fd\u6b63\u5e38\uff0c\u9501\u5b58\u5230\u7684
EA\u503c\u5fc5\u987b\u548c\u8fd9\u4e2a\u5f15\u811a\u7684\u5f53\u524d\u903b\u8f91\u7535\u5e73\u4e00\u81f4\u3002
Flash\u7f16\u7a0b\u2015\u5e76\u884c\u6a21\u5f0f
AT89S52 \u5e26\u6709\u7528\u4f5c\u7f16\u7a0b\u7684\u7247\u4e0aFlash \u5b58\u50a8\u5668\u9635\u5217\u3002\u7f16\u7a0b\u63a5\u53e3\u9700\u8981\u4e00\u4e2a\u9ad8\u7535\u538b\uff0812V\uff09\u7f16
\u7a0b\u4f7f\u80fd\u4fe1\u53f7\uff0c\u5e76\u4e14\u517c\u5bb9\u5e38\u89c4\u7684\u7b2c\u4e09\u65b9*\uff08\u539f\u6587\uff1athird-party\uff0c\u4e0d\u77e5\u9053\u5bf9\u4e0d\u5bf9\uff09Flash\u6216EPROM
\u7f16\u7a0b\u5668\u3002
AT89S52\u7a0b\u5e8f\u5b58\u50a8\u9635\u5217\u91c7\u7528\u5b57\u8282\u5f0f\u7f16\u7a0b\u3002
\u7f16\u7a0b\u65b9\u6cd5
\u5bf9AT89S52\u7f16\u7a0b\u4e4b\u524d\uff0c\u9700\u6839\u636eFlash\u7f16\u7a0b\u6a21\u5f0f\u8868\u548c\u56fe13\u3001\u56fe14\u5bf9\u5730\u5740\u3001\u6570\u636e\u548c\u63a7\u5236\u4fe1
\u53f7\u8bbe\u7f6e\u3002\u53ef\u91c7\u7528\u4e0b\u5217\u6b65\u9aa4\u5bf9AT89S52\u7f16\u7a0b\uff1a
AT89S52
19
1\uff0e\u5728\u5730\u5740\u7ebf\u4e0a\u8f93\u5165\u7f16\u7a0b\u5355\u5143\u5730\u5740\u4fe1\u53f7
2\uff0e\u5728\u6570\u636e\u7ebf\u4e0a\u8f93\u5165\u6b63\u786e\u7684\u6570\u636e
3\uff0e\u6fc0\u6d3b\u76f8\u5e94\u7684\u63a7\u5236\u4fe1\u53f7
4\uff0e\u628aEA/Vpp\u5347\u81f312V
5\uff0e\u6bcf\u7ed9Flash\u5199\u5165\u4e00\u4e2a\u5b57\u8282\u6216\u7a0b\u5e8f\u52a0\u5bc6\u4f4d\u65f6\uff0c\u90fd\u8981\u7ed9ALE/PROG\u4e00\u6b21\u8109\u51b2\u3002\u5b57\u8282\u5199\u5468
\u671f\u65f6\u81ea\u8eab\u5b9a\u5236\u7684\uff0c\u5178\u578b\u503c\u4ec5\u4ec550us\u3002\u6539\u53d8\u5730\u5740\u3001\u6570\u636e\u91cd\u590d\u7b2c1\u6b65\u5230\u7b2c5\u6b65\uff0c\u77e5\u9053\u5168
\u90e8\u6587\u4ef6\u7ed3\u675f\u3002
Data Polling
AT89S52\u7528Data Polling\u4f5c\u4e3a\u4e00\u4e2a\u5b57\u8282\u5199\u5468\u671f\u7ed3\u675f\u7684\u6807\u5fd7\u7279\u5f81\u3002
\u8bd1\u8005\u6ce8\uff1a
\u540e\u9762\u5168\u662f\u7f16\u7a0b\u7684\u65f6\u5e8f\u95ee\u9898\uff0c\u5b9e\u5728\u8bd1\u4e0d\u4e0b\u53bb\u4e86\u3002\u611f\u5174\u8da3\u7684\u63a5\u7740\u7ffb\u554a\u3002
\u53c2\u8003\u8d44\u6599\uff1a
1\uff0eATMEL\u516c\u53f8 AT89S52\u7684\u6280\u672f\u624b\u518c
2\uff0e\u6df1\u5733\u5e02\u4e2d\u6e90\u5355\u7247\u673a\u53d1\u5c55\u6709\u9650\u516c\u53f8 AT89C52 Datasheets
3\uff0e\u590d\u65e6\u5927\u5b66\u51fa\u7248\u793e \u5355\u7247\u5fae\u578b\u673a\u539f\u7406\u3001\u5e94\u7528\u548c\u5b9e\u9a8c \u5f20\u53cb\u5fb7\u7b49
\u8fd9\u4e2a\u5f88\u597d\u5904\u7406\u5440\uff0c\u6bd4\u5982\u4ee5\u4e0b\u4e3e\u4f8b\uff0c\u72ec\u7acb+\u77e9\u9635\uff0c\u5b9e\u73b0\u72ec\u7acb\u6309\u952e\u76f8\u5f53\u4e8e\u7c7b\u4f3cSHIFT\u4f5c\u7528\u7684\u6548\u679c\u3002
#include
#define uchar unsigned char
uchar tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; //0\u5230f
uchar keyval,num;
sbit skey=P1^0; //\u72ec\u7acb\u952eP1.0
void delay(uchar a)
{
uchar i,j;
for(i=0;i<a;i++)
for(j=0;j<125;j++);
}
uchar kbscan(void) //\u77e9\u9635\u952e\u626b\u63cf\u7a0b\u5e8f
{
unsigned char sccode,recode;
P3=0x0f; //\u53d10\u626b\u63cf,\u5217\u7ebf\u8f93\u5165
if ((P3 & 0x0f) != 0x0f) //\u6709\u952e\u6309\u4e0b
{
delay(20); //\u5ef6\u65f6\u53bb\u6296\u52a8
if ((P3&0x0f)!= 0x0f)
{
sccode = 0xef; //\u9010\u884c\u626b\u63cf\u521d\u503c
while((sccode&0x01)!=0)
{
P3=sccode;
if((P3&0x0f)!=0x0f)
{
recode=(P3&0x0f)|0xf0;
while((P3&0x0f)!=0x0f);//\u7b49\u5f85\u952e\u62ac\u8d77
return((~sccode)+(~recode));
}
else
sccode=(sccode<<1)|0x01;
}
}
}
return 0; //\u65e0\u952e\u6309\u4e0b\uff0c\u8fd4\u56de0
}
void getkey(void)
{
unsigned char key;
key=kbscan();
if(key==0)
{
return;
}
switch(key)
{
case 0x11:keyval=7;break;
case 0x12:keyval=4;break;
case 0x14:keyval=1;break;
case 0x18:keyval=10;break;
case 0x21:keyval=8;break;
case 0x22:keyval=5;break;
case 0x24:keyval=2;break;
case 0x28:keyval=0;break;
case 0x41:keyval=9;break;
case 0x42:keyval=6;break;
case 0x44:keyval=3;break;
case 0x48:keyval=11;break;
case 0x81:keyval=12;break;
case 0x82:keyval=13;break;
case 0x84:keyval=14;break;
case 0x88:keyval=15;break;
default:keyval=0xff;break;
}
//\u4ee5\u4e0b\u5904\u7406\u72ec\u7acb\u6309\u952e
if(skey==0)
{
if(keyval!=0xff)keyval+=16; //\u5982\u679c\u72ec\u7acb\u952e\u6309\u4e0b\uff0c\u952e\u503c\u52a016
while(skey==0); //\u7b49\u5f85\u72ec\u7acb\u952e\u91ca\u653e
}
}
void t0isr() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
switch(num)
{
case 0:P2=0x01;break;
case 1:P2=0x02;break;
case 2:P2=0x04;break;
case 3:P2=0x08;break;
default:break;
}
if(keyval<16) P0=~tab[keyval]; //\u72ec\u7acb\u952e\u672a\u6309\u6b63\u5e38\u663e\u793a
else P0=~(tab[keyval]|0x80); //\u72ec\u7acb\u952e\u6309\u4e0b\u663e\u793a+DP
num++;
num&=0x03;
}
main()
{
TMOD=0x01;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
TR0=1;
ET0=1;
EA=1;
while(1)
{
getkey();
}
}
第二，为了避免一次按键，多次触发，对按键值操作后，需要进行清除处理；（即赋值成无效的按键值），如 IrValue[2]=0xff；（如果没有按键是 0xff的话）
第三，最正确的做法是，收到遥控后，额外提供一个标志位（如 IR_UpdateFlag），程序识别标志位后，进行按键选择，处理完按键后，清除标志位。这样可以避免程序重复、多余执行按键选择（虽然是无效的按键，但那也是选择），可以提高系统执行效率！
求更新 我也遇到这种问题 你是怎么解决的
你的代码不完整
绛旓細鐢51鍗曠墖鏈哄埗浣滃涔犲瀷绾㈠閬ユ帶鍣鐨勫師鐞 涓昏鏄疌绋嬪簭鏂归潰寰堥毦鍐欏嚭鏉??鍙戝皠妯″潡鐨勭▼搴忔濊矾鎬庝箞鍐???鏈濂芥湁C绋嬪簭addby2004鐨勬槸涓涓帴鍙楁椂鐨勮В鐮佺殑杩囩▼鍚??鍋囧鎴戣鐨勯仴鎺у櫒鏄嚜宸卞仛鐨勮屼笖鏄敤51鍗曠墖鏈烘牴鎹鎸夐敭鐨勪笉鍚屽彂灏... 涓昏鏄疌绋嬪簭鏂归潰寰堥毦鍐欏嚭鏉??鍙戝皠妯″潡鐨勭▼搴忔濊矾鎬庝箞鍐???鏈濂芥湁C绋嬪簭addby2004 鐨...
绛旓細闇瑕佺煡閬撲綘鎵閫夌敤鐨绾㈠閬ユ帶鍣鐢ㄤ粈涔堝崗涔夛紝32浣嶇殑杩樻槸42浣嶈繕鏄48浣嶇殑锛岃璁′竴涓孩澶栬В鐮佺殑绋嬪簭妯″潡锛屽湪鏃堕棿涓柇閲岃疆璇紝渚濇櫠鎸儏鍐佃缃悎閫傜殑鏃堕棿婧㈠嚭鍊硷紝姣忔绉掑埌灏戦噰鏍5娆★紝瑕佽兘姣忔绉掗噰鏍10-20娆℃洿濂斤紝瑙ｇ爜鎴愬姛锛岃缃敭鍊煎彉閲忓苟鎶婁俊鍙锋爣璁扮疆1锛岃屼富绋嬪簭閲屽垯瑕佽疆璇㈡鏌ヨ繖涓俊鍙锋爣璁帮紝鍙戠幇鏈変俊鍙峰氨璇...
绛旓細if(irdate!=0)//闃叉娌℃湁鎺ユ敹鍒绾㈠淇″彿锛孖RCOM[3]缃浂鏃讹紝璇啓鍏0 { WP=0;WriIIC(W_cmd,0x00,irdate);delay10ms();WP=1;led=0;while(key==0);//瀛︿範鎴愬姛绛夊緟鎸夐敭閲婃斁锛宭ed鍋滄闂姩浣滀负鎸囩ず } } } //杩涘叆瀛︿範鐘舵佹椂鐨刲ed闂姩鍑芥暟 flash(){ unsigned char i;while(key==0){ led...
绛旓細e浜敭鍔熻兘锛氬揩閫熷垏鎹㈢┖璋冨埗鍐峰埗鐑俰feel鏄簯鍔熻兘锛岃嚜鍔ㄨ皟鑺傝垝閫傜┖璋冩俯搴︺傚锛氱幇鍦ㄧ敤鏈哄櫒闇瑕佸埗鐑紝璋冩垚鍒跺喎鎰燂紝鎸変笅e浜敭锛岀湅绌鸿皟鐨勮繍琛岀姸鎬佸彉浜嗘病锛屽鏋滃彉涓烘殩锛岀儹杩欎袱涓。灏辨甯搞
绛旓細e)褰撴寜閿噴鏀炬椂锛屽啀鍒や竴娆EY_JSQ锛屽鏋淜EY_JSQ< AN_CJ_DL锛屽垯璇存槑鍒氭墠閲婃斁鐨勯偅娆″嚮閿负鈥滅煭鍑烩漟) 闇瑕佹寚鍑虹殑鏄紝褰涓涓寜閿涓婂悓鏃舵敮鎸佲滅煭鍑烩濆拰鈥滈暱鍑烩濇椂锛 浜岃呯殑鎵ц鏃 鏈烘槸涓嶅悓鐨勩 i. 涓鑸潵璇达紝鈥滈暱鍑烩濅竴鏃﹁妫娴嬪埌灏辩珛鍗虫墽琛屻 ii. 鑰屽浜庘滅煭鍑烩濇潵璇达紝鍥犱负褰撴寜閿垰琚寜...
绛旓細EA=1; //寮鎬讳腑鏂 } void time0() interrupt 1//瀹氭椂鍣0涓柇 {TH0=0xff;TL0=0x06;timedata++;} void ex0() interrupt 0//澶栭儴涓柇0锛屾帴鏀舵暟鎹 { static bit startflag;//寮濮嬫帴鏀 static uchar i;if(startflag){ if(timedata<32&&timedata>=16) i=0;chubus[i]=timedata;timedata...
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