{"id":12828,"date":"2019-06-08T00:00:00","date_gmt":"2019-06-08T00:00:00","guid":{"rendered":""},"modified":"2019-06-08T00:00:00","modified_gmt":"2019-06-08T00:00:00","slug":"44114-13215","status":"publish","type":"post","link":"http:\/\/www.cooxp.com\/talk\/44114-13215.htm","title":{"rendered":"51\u5355\u7247\u673a\u4e32\u53e3\u591a\u673a\u901a\u4fe1\u7f16\u7a0b\u8bf4\u660e"},"content":{"rendered":"

\u4e00\u300151\u5355\u7247\u673a\u7684\u4e3b\u4ece\u6a21\u5f0f\uff0c\u9996\u5148\u8981\u8bbe\u5b9a\u5de5\u4f5c\u65b9\u5f0f3\uff1a(\u4e3b\u4ece\u6a21\u5f0f+\u6ce2\u7279\u7387\u53ef\u53d8)
SCON\u4e32\u53e3\u529f\u80fd\u5bc4\u5b58\u5668\uff1aSM0=1;SM1=1(\u5de5\u4f5c\u65b9\u5f0f3)
620)this.width=620;” onclick=”window.open(this.src)”>
\u6ce8\uff1a\u4e3b\u673a\u548c\u4ece\u673a\u90fd\u8981\u4e3a\u5de5\u4f5c\u65b9\u5f0f3\u3002
\u3010\u5de5\u4f5c\u65b9\u5f0f2 (SM0 SM1 :1 0)\uff1a\u4e32\u884c\u53e3\u4e3a11\u4f4d\u5f02\u6b65\u901a\u4fe1\u63a5\u53e3\u3002\u53d1\u9001\u6216\u63a5\u6536\u4e00\u5e27\u4fe1\u606f\u5305\u62ec1\u4f4d\u8d77\u59cb\u4f4d\u201c0\u201d\u30018\u4f4d\u6570\u636e\u4f4d\u30011\u4f4d\u53ef\u7f16\u7a0b\u4f4d\u30011\u4f4d\u505c\u6b62\u4f4d\u201c1\u201d\u3002\u53d1\u9001\u6570\u636e\uff1a\u53d1\u9001\u524d\uff0c\u5148\u6839\u636e\u901a\u4fe1\u534f\u8bae\u7531\u8f6f\u4ef6\u8bbe\u7f6eTB8\u4e3a\u201c\u5947\u5076\u6821\u9a8c\u4f4d\u201d\u6216\u201c\u6570\u636e\u6807\u8bc6\u4f4d\u201d\uff0c\u7136\u540e\u5c06\u8981\u53d1\u9001\u7684\u6570\u636e\u5199\u5165SBUF\uff0c\u5373\u80fd\u542f\u52a8\u53d1\u9001\u5668\u3002\u53d1\u9001\u8fc7\u7a0b\u662f\u7531\u6267\u884c\u4efb\u4f55\u4e00\u6761\u4ee5SBUF\u4e3a\u76ee\u7684\u5bc4\u5b58\u5668\u7684\u6307\u4ee4\u800c\u542f\u52a8\u7684\uff0c\u628a8\u4f4d\u6570\u636e\u88c5\u5165SBUF\uff0c\u540c\u65f6\u8fd8\u628aTB8\u88c5\u5230\u53d1\u9001\u79fb\u4f4d\u5bc4\u5b58\u5668\u7684\u7b2c9\u4f4d\u4e0a\uff0c\u7136\u540e\u4eceTXD(P3.1)\u7aef\u53e3\u8f93\u51fa\u4e00\u5e27\u6570\u636e\u3002\u63a5\u6536\u6570\u636e\uff1a\u5148\u7f6eREN=1\uff0c\u4f7f\u4e32\u884c\u53e3\u4e3a\u5141\u8bb8\u63a5\u6536\u72b6\u6001\uff0c\u540c\u65f6\u8fd8\u8981\u5c06RI\u6e05\u201c0\u201d\u3002\u7136\u540e\u518d\u6839\u636eSM2\u7684\u72b6\u6001\u548c\u6240\u63a5\u6536\u5230\u7684RB8\u7684\u72b6\u6001\u51b3\u5b9a\u6b64\u4e32\u884c\u53e3\u5728\u4fe1\u606f\u5230\u6765\u540e\u662f\u5426\u7f6eR1=1\uff0c\u5e76\u7533\u8bf7\u4e2d\u65ad\uff0c\u901a\u77e5CPU\u63a5\u6536\u6570\u636e\u3002\u5f53SM2=0\u65f6\uff0c\u4e0d\u7ba1RB8\u4e3a\u201c0\u201d\u8fd8\u662f\u4e3a\u201c1\u201d\uff0c\u90fd\u7f6eRI=1\uff0c\u6b64\u4e32\u884c\u53e3\u5c06\u63a5\u6536\u53d1\u9001\u6765\u7684\u4fe1\u606f\u3002\u5f53SM2=1\u65f6\uff0c\u4e14RB8=1\uff0c\u8868\u793a\u5728\u591a\u673a\u901a\u4fe1\u60c5\u51b5\u4e0b\uff0c\u63a5\u6536\u7684\u4fe1\u606f\u4e3a\u201c\u5730\u5740\u5e27\u201d, \u6b64\u65f6\u7f6eRI=1,\u4e32\u884c\u53e3\u5c06\u63a5\u6536\u53d1\u6765\u7684\u5730\u5740\u3002\u5f53SM2=1\u65f6\uff0c\u4e14RB8=0\uff0c\u8868\u793a\u5728\u591a\u673a\u901a\u4fe1\u60c5\u51b5\u4e0b\uff0c\u63a5\u6536\u7684\u4fe1\u606f\u4e3a\u201c\u6570\u636e\u5e27\u201d, \u4f46\u4e0d\u662f\u53d1\u7ed9\u672c\u4ece\u673a\u7684\uff0c\u6b64\u65f6RI\u4e0d\u7f6e\u4e3a\u201c1\u201d\uff0c\u56e0\u800cSBUF\u4e2d\u63a5\u6536\u7684\u6570\u636e\u5e27\u5c06\u4e22\u5931\u3002
\u5de5\u4f5c\u65b9\u5f0f3 (SM0 SM1 :1 1)\uff1a\u4e3a\u6ce2\u7279\u7387\u53ef\u53d8\u768411\u4f4d\u5f02\u6b65\u901a\u4fe1\u65b9\u5f0f\uff0c\u9664\u4e86\u6ce2\u7279\u7387\u6709\u6240\u533a\u522b\u4e4b\u5916\uff0c\u5176\u4f59\u65b9\u5f0f\u90fd\u4e0e\u65b9\u5f0f2\u76f8\u540c\u3002\u3011\u3010\u4ee5\u4e0a\u5185\u5bb9\u6458\u81ea\u7f51\u7edc\u3011
\u4e8c\u3001\u4e3b\u673a\u7684\u914d\u7f6e\u53d1\u9001\u201c\u5730\u5740\u201d\u65f6\uff0c\u628aTB8\u8bbe\u5b9a\u4e3a1\uff0c\u53d1\u9001\u6570\u636e\u65f6TB8\u8bbe\u5b9a\u4e3a0
(\u7c7b\u4f3c\u4e8e\uff1a\u4e3b\u673a TB8=1\u53d1\u9001\u7684\u662f\u5730\u5740\uff0cTB8=0\u53d1\u9001\u7684\u662f\u6570\u636e)
\u53d1\u9001\u5e27\u7ed3\u6784\uff1a
620)this.width=620;” onclick=”window.open(this.src)”>
\u5047\u8bbe\u4e3b\u673a\u5c06\u53d1\u9001\u201c1234\u201d\u7ed9\u5730\u5740\u4e3a1\u7684\u4ece\u673a\uff1a\u8c03\u7528\u51fd\u6570\uff1aTXdata(1,1234$);
void TXdata(uchar addr,uchar *str)
{
TB8 = 1; \/\/\u53d1\u9001\u5730\u5740
SBUF = addr; \/\/\u628a\u5730\u5740\u53d1\u9001\u51fa\u53bb
while(!TI); \/\/\u5224\u65ad\u662f\u5426\u53d1\u9001\u6210\u529f(\u53d1\u9001\u6210\u529f\u540eTI\u4f1a\u7f6e1\uff0c\u9700\u624b\u52a8\u6e050)
TI = 0;
TB8 = 0; \/\/\u53d1\u9001\u6570\u636e
while(*str != \u0000) \/\/\u53d1\u9001\u6570\u7ec4
{
SBUF = (*str);
while(!TI);
TI = 0;
str++;
}
}
\u4e09\u3001\u4ece\u673a\u914d\u7f6e
1. \u4ece\u673a\u63a5\u6536\u65f6\uff0c\u9996\u5148\u4e32\u53e3\u521d\u59cb\u5316\u65f6\uff0c\u4f7fSM2=1(\u63a5\u6536\u5730\u5740\u6a21\u5f0f\uff0c\u5373\u53ea\u80fd\u63a5\u6536\u5230TB8=1\u7684\u6570\u636e\uff0c\u624d\u89e6\u53d1\u4e2d\u65ad)\uff0c\u4e3b\u673a\u53d1\u9001TB=0\u7684\u6570\u636e\uff0c\u88ab\u8ba4\u4e3a\u662f\u603b\u7ebf\u4e0a\u7684\u4e3b\u673a\u53d1\u9001\u7ed9\u522b\u673a\u7684\u901a\u4fe1\u6570\u636e\uff0c\u672c\u673a\u4e22\u5f03\uff0c\u4e0d\u4ea7\u751f\u4e2d\u65ad\u3002
2. \u63a5\u6536\u7684\u5730\u5740\u4e0e\u672c\u673a\u5730\u5740\u76f8\u7b26\u540e\uff0c\u4f7fSM2=0(\u63a5\u6536\u6570\u636e\u6a21\u5f0f\uff0c\u63a5\u6536\u6570\u636e\u6b63\u5e38\u89e6\u53d1\u4e2d\u65ad)
(\u7c7b\u4f3c\u4e8e\uff1a\u4ece\u673a SM2=1\u53ea\u63a5\u6536\u5730\u5740\uff0cSM2=0\u53ea\u63a5\u6536\u6570\u636e)
void chuan() interrupt 4 \/\/\u4e32\u53e3\u4e2d\u65ad\u670d\u52a1\u51fd\u6570
{
ES = 0; \/\/\u5173\u95ed\u4e32\u53e3\u4e2d\u65ad
if(RI) \/\/\u518d\u6b21\u5224\u65ad\uff0c\u662f\u5426\u63a5\u6536\u5230\u6570\u636e(\u63a5\u6536\u5230\u6570\u636e\u540e\uff0cRI\u4f1a\u7f6e1\uff0c\u9700\u624b\u52a8\u6e050)
{
RXData = SBUF;
if(RXstart) \/\/\u5224\u65ad\u662f\u5426\u63a5\u6536\u5230\u8fc7\u672c\u5730\u5740
{
if(RXData != $) \/\/\u5224\u65ad\u662f\u5426\u63a5\u6536\u5230 \u6570\u636e\u7ed3\u675f \u6807\u5fd7 $
{
temp[j] = RXData; \/\/\u6ca1\u6709\u63a5\u6536\u5230\u7ed3\u675f\u6807\u5fd7\uff0c\u6b63\u5e38\u4fdd\u5b58\u6570\u636e\u81f3\u6570\u7ec4
j++;
}
else \/\/\u63a5\u6536\u5230 \u7ed3\u675f\u6807\u5fd7 $
{
RXstart= 0; \/\/\u672c\u6b21\u63a5\u6536\u7ed3\u675f
SM2 = 1; \/\/\u91cd\u65b0 \u914d\u7f6e\u4e3a\uff1a\u53ea\u63a5\u6536\u5730\u5740 \u6a21\u5f0f\uff0c\u4e0b\u6b21\u53d1\u9001TB8=1\u624d\u4e2d\u65ad
j = 0;
}
}
if(RXData == 1) \/\/\u5224\u65ad\u662f\u5426\u547c\u53eb\u672c\u673a\uff0c\u5730\u5740\u8303\u56f4\uff1a000 \u2013 254(00 – FE)
{
RXstart = 1; \/\/\u5f00\u59cb\u63a5\u6536\u6570\u636e
SM2 = 0; \/\/\u914d\u7f6e\u4e3a\uff1a\u63a5\u6536\u6570\u636e \u6a21\u5f0f
}
}
RI = 0; \/\/\u6e05\u9664\u63a5\u6536\u6807\u5fd7\u4f4d
ES = 1; \/\/\u91cd\u65b0\u5f00\u542f\u4e32\u53e3\u4e2d\u65ad
}
\u56db\u3001\u4e32\u53e3\u521d\u59cb\u5316\u914d\u7f6e
89S51\u300152\u3001STC12Cxxx + 11.0592M\u6676\u632f\uff0c9600bps
void UART_init()
{
TMOD = 0x20; \/\/\u5b9a\u65f6\u56681\uff0c\u5de5\u4f5c\u65b9\u5f0f2\uff1a8\u4f4d\u3001\u81ea\u52a8\u91cd\u88c5
TH1 = 0xfd; \/\/fd: 9600bps @ 11.0592M
TL1 = 0xfd; \/\/e8: 1200bps @ 11.0592M
\/\/f4: 2400bps @ 11.0592M
REN = 1; \/\/\u5141\u8bb8\u4e32\u53e3\u63a5\u6536
SM0 = 1;
SM1 = 1; \/\/SM0\u548cSM1\uff1a\u4e32\u53e3\u5de5\u4f5c\u6a21\u5f0f3\uff0c\u4e3b\u4ece\u6a21\u5f0f + \u6ce2\u7279\u7387\u53ef\u53d8
SM2 = 1; \/\/\u53ea\u63a5\u6536\u5730\u5740(\u4ece\u673a\u5982\u6b64\u914d\u7f6e\uff0c\u4e3b\u673a\u4e0d\u9700\u8981)
ES = 1; \/\/\u5f00\u4e32\u53e3\u4e2d\u65ad
TR1 = 1; \/\/\u542f\u52a8\u5b9a\u65f6\u56681
EA = 1; \/\/\u4e2d\u65ad \u603b\u5f00\u5173
}
\u4e94\u3001\u63a5\u7ebf\u56fe\u548c\u6ce8\u610f\u4e8b\u9879
620)this.width=620;” onclick=”window.open(this.src)”>
1\u3001\u4ece\u673a\u548c\u4ece\u673a\u4e4b\u95f4\u901a\u4fe1\uff0c\u53ea\u80fd\u901a\u8fc7\u4e3b\u673a\u4e2d\u8f6c\u3002
2\u3001\u5404\u4ece\u673a\u7684TXD\u8f93\u51fa\u4e0d\u80fd\u8bbe\u7f6e\u4e3a\u63a8\u633d\u8f93\u51fa\uff0c\u8981\u8bbe\u7f6e\u4e3a\u5f00\u6f0f\u8f93\u51fa\u3002
3\u3001\u901a\u4fe1\u603b\u7ebf\u4e0d\u80fd\u8fc7\u957f\uff0c\u6700\u597d\u4e0d\u8d85\u8fc72\u7c73\u3002<\/p>\n

\u3002 \uff08\u672c\u6587\u6765\u6e90\u7f51\u7edc\u6574\u7406\uff0c\u76ee\u7684\u662f\u4f20\u64ad\u6709\u7528\u7684\u4fe1\u606f\u548c\u77e5\u8bc6\uff0c\u5982\u6709\u4fb5\u6743\uff0c\u53ef\u8054\u7cfb\u7ba1\u7406\u5458\u5220\u9664\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u300151\u5355\u7247\u673a\u7684\u4e3b\u4ece\u6a21\u5f0f\uff0c\u9996\u5148\u8981\u8bbe\u5b9a\u5de5\u4f5c\u65b9\u5f0f3\uff1a(\u4e3b\u4ece\u6a21\u5f0f+\u6ce2\u7279\u7387\u53ef\u53d8) SCON\u4e32\u53e3\u529f\u80fd\u5bc4\u5b58\u5668\uff1aSM0=1; […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts\/12828"}],"collection":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/comments?post=12828"}],"version-history":[{"count":0,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts\/12828\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/media?parent=12828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/categories?post=12828"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/tags?post=12828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}