{"id":2112,"date":"2019-01-18T08:45:00","date_gmt":"2019-01-18T08:45:00","guid":{"rendered":""},"modified":"2019-01-18T16:45:22","modified_gmt":"2019-01-18T08:45:22","slug":"avr%e5%8d%95%e7%89%87%e6%9c%ba%e7%94%b5%e6%a2%af%e5%a4%96%e5%91%bc%e6%9d%bf%e7%b3%bb%e7%bb%9f%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2112","title":{"rendered":"AVR\u5355\u7247\u673a\u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u8bbe\u8ba1"},"content":{"rendered":"

\n\t\u968f\u7740\u73b0\u4ee3\u793e\u4f1a\u7684\u53d1\u5c55\uff0c\u79d1\u5b66\u6280\u672f\u7684\u8fdb\u6b65\uff0c\u51fa\u73b0\u4e86\u4f17\u591a\u9ad8\u5c42\u5efa\u7b51\u548c\u667a\u80fd\u5efa\u7b51\u3002\u7535\u68af\uff0c\u4f5c\u4e3a\u9ad8\u5c42\u5efa\u7b51\u5185\u90e8\u4e00\u79cd\u91cd\u8981\u7684\u4ea4\u901a\u5de5\u5177\uff0c\u5176\u5e94\u7528\u89c4\u6a21\u65e5\u76ca\u6269\u5927\u3002\u800c\u4f5c\u4e3a\u7535\u68af\u7cfb\u7edf\u4e2d\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u90e8\u5206\uff0c\u7535\u68af\u53ec\u5524\u663e\u793a\u677f\uff08\u7b80\u79f0\u7535\u68af\u5916\u547c\u677f\uff09\u7684\u5e94\u7528\u4e5f\u968f\u4e4b\u5267\u589e\u3002<\/p>\n

\n\t\u7535\u68af\u5916\u547c\u677f\u5e94\u7528\u4e8e\u6bcf\u5c42\u697c\u7684\u7535\u68af\u95e8\u5916\uff0c\u4f9b\u4e58\u5ba2\u53ca\u7535\u68af\u7ef4\u4fdd\u4eba\u5458\u4f7f\u7528\u3002\u7535\u68af\u5916\u547c\u677f\u5c06\u4e58\u5ba2\u53ca\u7ef4\u4fdd\u4eba\u5458\u7684\u9700\u6c42\u4fe1\u606f\u901a\u8fc7CAN<\/u>\u603b\u7ebf\u4f20\u8fbe\u7ed9\u7535\u68af\u4e3b\u677f\uff0c\u7535\u68af\u4e3b\u677f\u63a5\u6536\u4fe1\u606f\u5e76\u6267\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u540c\u65f6\uff0c\u7535\u68af\u4e3b\u677f\u5c06\u7535\u68af\u7684\u5b9e\u65f6\u8fd0\u884c\u4fe1\u606f\u901a\u8fc7CAN\u603b\u7ebf\u4f20\u9012\u7ed9\u7535\u68af\u5916\u547c\u677f\uff0c\u901a\u8fc7\u5916\u547c\u677fLED\u663e\u793a\u51fa\u6765\uff0c\u4f9b\u4e58\u5ba2\u53c2\u9605\u3002<\/p>\n

\n\t <\/div>\n

\n\tAVR\u5355\u7247\u673a<\/u>\u5177\u6709\u9ad8\u53ef\u9760\u6027\u3001\u529f\u80fd\u5f3a\u3001\u9ad8\u901f\u5ea6\u3001\u4f4e\u529f\u8017\u548c\u4f4e\u4ef7\u4f4d\u7684\u7279\u70b9\uff0c\u672c\u7cfb\u7edf\u9009\u7528\u4e86\u9ad8\u6863ATmega\u5217AVR\u5355\u7247\u673aATmegal6\u3002\u5b83\u5177\u6709\u5148\u8fdb\u7684RI-SC\u7ed3\u6784\uff0c\u5177\u670916 kB\u7684\u7cfb\u7edf\u5185\u53ef\u7f16\u7a0bFlash\uff0c512 B\u7684EEPROM<\/u>\uff0c1 kB\u7684\u7247\u5185SRAM<\/u>\u3002\u540c\u65f6\uff0c\u82af\u7247\u5177\u6709\u72ec\u7acb\u7247\u5185\u632f\u8361\u5668<\/u>\u7684\u53ef\u7f16\u7a0b\u770b\u95e8\u72d7<\/u>\u5b9a\u65f6\u5668<\/u>\uff0c\u901a\u8fc7\u6539\u53d8\u7194\u4e1d\u4f4d\u53ef\u4ee5\u8bbe\u7f6e\u7247\u5185\u6676\u632f\u7684\u632f\u8361\u5468\u671f\uff0c\u8fd9\u6837\u53ef\u4ee5\u7701\u53bb\u5916\u56f4\u7684\u770b\u95e8\u72d7\u7535\u8def\u548c\u6676\u632f\u7535\u8def\u7684\u8bbe\u8ba1\u3002<\/p>\n

\n\t1 \u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u786c\u4ef6\u7ed3\u6784<\/p>\n

\n\t\u7535\u68af\u5916\u547c\u677f\u7684\u786c\u4ef6\u7535\u8def\u4e3b\u8981\u7531\u4e58\u5ba2\u6309\u952e\u6a21\u5757\u3001\u6307\u793a\u706f\u63a7\u5236\u6a21\u5757\u3001LED\u6a21\u5757\u3001CAN\u901a\u4fe1\u7535\u8def\u4ee5\u53ca\u7535\u6e90\u6a21\u5757<\/u>\u6784\u6210\uff0c\u5982\u56fe1\u6240\u793a\u3002<\/p>\n

\n\t\"AVR\u5355\u7247\u673a\u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u8bbe\u8ba1\"<\/p>\n

\n\t1.1 CAN\u901a\u4fe1\u6a21\u5757<\/p>\n

\n\t1.1.1 CAN\u7684\u6280\u672f\u7279\u70b9<\/p>\n

\n\tCAN\u662f\u4e00\u79cd\u591a\u4e3b\u603b\u7ebf\uff0c\u901a\u4fe1\u4ecb\u8d28\u53ef\u4ee5\u662f\u53cc\u7ede\u7ebf\u3001\u540c\u8f74\u7535\u7f06\u6216\u5149\u5bfc\u7ea4\u7ef4\uff0c\u5177\u6709\u7269\u7406\u5c42\u3001\u6570\u636e\u94fe\u8def\u5c42\u548c\u5e94\u7528\u5c42\u7b493\u5c42\u534f\u8bae\uff0c\u5176\u901a\u4fe1\u901f\u7387\u53ef\u8fbe1 Mb\/s\u3002CAN\u603b\u7ebf\u4e13\u7528\u63a5\u53e3\u82af\u7247\u4e2d\u4ee5\u56fa\u4ef6\u5f62\u5f0f\u96c6\u6210\u4e86CAN\u534f\u8bae\u7684\u7269\u7406\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c422\u5c42\u529f\u80fd\uff0c\u5b8c\u6210\u5bf9\u901a\u4fe1\u6570\u636e\u7684\u6210\u5e27\u5904\u7406\uff0c\u5305\u62ec\u4f4d\u586b\u5145\u3001\u6570\u636e\u5757\u7f16\u7801\u3001\u5faa\u73af\u5197\u4f59\u6821\u9a8c\u3001\u4f18\u5148\u7ea7\u5224\u522b\u7b49\u591a\u9879\u5de5\u4f5c\u3002\u5b83\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n

\n\t1\uff09\u5e9f\u9664\u4f20\u7edf\u7684\u7ad9\u5730\u5740\u7f16\u7801\uff0c\u4ee3\u4e4b\u4ee5\u5bf9\u901a\u4fe1\u6570\u636e\u5757\u8fdb\u884c\u7f16\u7801\uff0c\u53ef\u4ee5\u591a\u4e3b\u65b9\u5f0f\u5de5\u4f5c;<\/p>\n

\n\t2\uff09\u91c7\u7528\u975e\u7834\u574f\u6027\u4ef2\u88c1\u6280\u672f\uff0c\u5f532\u4e2a\u8282\u70b9\u540c\u65f6\u5411\u7f51\u7edc\u4e0a\u4f20\u9001\u6570\u636e\u65f6\uff0c\u4f18\u5148\u7ea7\u4f4e\u7684\u8282\u70b9\u4e3b\u52a8\u505c\u6b62\u6570\u636e\u53d1\u9001\uff0c\u800c\u4f18\u5148\u7ea7\u9ad8\u7684\u8282\u70b9\u53ef\u4e0d\u53d7\u5f71\u54cd\u7ee7\u7eed\u4f20\u8f93\u6570\u636e\uff0c\u6709\u6548\u907f\u514d\u4e86\u603b\u7ebf\u51b2\u7a81;<\/p>\n

\n\t3\uff09\u91c7\u7528\u77ed\u5e27\u7ed3\u6784\uff0c\u6bcf\u4e00\u5e27\u7684\u6709\u6548\u5b57\u8282\u6570\u4e3a8\u4e2a\uff0c\u6570\u636e\u4f20\u8f93\u65f6\u95f4\u77ed\uff0c\u53d7\u5e72\u6270\u7684\u6982\u7387\u4f4e\uff0c\u91cd\u65b0\u53d1\u9001\u7684\u65f6\u95f4\u77ed;<\/p>\n

\n\t4\uff09\u6bcf\u5e27\u6570\u636e\u90fd\u6709CRC\u6821\u9a8c\u53ca\u5176\u4ed6\u68c0\u9519\u63aa\u65bd\uff0c\u4fdd\u8bc1\u4e86\u6570\u636e\u4f20\u8f93\u7684\u9ad8\u53ef\u9760\u6027\uff0c\u9002\u4e8e\u5728\u9ad8\u5e72\u6270\u73af\u5883\u4e0b\u4f7f\u7528;<\/p>\n

\n\t5\uff09\u8282\u70b9\u5728\u9519\u8bef\u4e25\u91cd\u7684\u60c5\u51b5\u4e0b\uff0c\u5177\u6709\u81ea\u52a8\u5173\u95ed\u603b\u7ebf\u7684\u529f\u80fd\uff0c\u5207\u65ad\u5176\u4e0e\u603b\u7ebf\u7684\u8054\u7cfb\uff0c\u4ee5\u4f7f\u603b\u7ebf\u4e0a\u5176\u4ed6\u64cd\u4f5c\u4e0d\u53d7\u5f71\u54cd;<\/p>\n

\n\t6\uff09\u53ef\u4ee5\u70b9\u5bf9\u70b9\uff0c\u4e00\u5bf9\u591a\u53ca\u5e7f\u64ad\u96c6\u4e2d\u65b9\u5f0f\u4f20\u9001\u548c\u63a5\u6536\u6570\u636e\u3002<\/p>\n

\n\t\u57fa\u4e8e\u4ee5\u4e0a\u7279\u70b9\uff0c\u5728\u672c\u8bbe\u8ba1\u4e2d\u5c06\u7535\u68af\u4e3b\u677f\u8282\u70b9\u7684\u4f18\u5148\u7ea7\u8bbe\u4e3a\u6700\u9ad8\uff0c\u800c\u5176\u4ed6\u7535\u68af\u5916\u547c\u677f\u7684\u4f18\u5148\u7ea7\u6b21\u4e4b\uff0c\u7535\u68af\u4e3b\u677f\u53ef\u4ee5\u63a5\u6536\u4efb\u4f55\u7535\u68af\u5916\u547c\u677f\u7684\u6570\u636e\uff0c\u800c\u7535\u68af\u5916\u547c\u677f\u53ea\u80fd\u63a5\u6536\u7535\u68af\u4e3b\u677f\u7684\u6570\u636e\u3002\u7535\u68af\u4e3b\u677f\u53ef\u4ee5\u53d1\u9001\u5e7f\u64ad\u4fe1\u606f\uff08\u4f8b\u5982\u697c\u5c42\u8fd0\u884c\u7684\u4fe1\u606f\uff09\uff0c\u4e5f\u53ef\u4ee5\u53d1\u9001\u70b9\u5bf9\u70b9\u4fe1\u606f\uff08\u4f8b\u5982\u9488\u5bf9\u67d0\u5c42\u7684\u6307\u793a\u706f\u63a7\u5236\u4fe1\u606f\uff09\u3002<\/p>\n

\n\t1.1.2 CAN\u7684\u786c\u4ef6\u5b9e\u73b0<\/p>\n

\n\tCAN\u63a7\u5236\u5668\u91c7\u7528MICroChip<\/u>\u516c\u53f8\u7684MCP2510\uff0c\u8be5\u5668\u4ef6\u4f7f\u7528SPI<\/u>\u63a5\u53e3\u4e0eMCU<\/u>\u901a\u4fe1\u3002\u53ea\u97004\u6761\u603b\u7ebf\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e0eMCU\u7684\u901a\u4fe1\uff0c\u4f46\u4e3a\u4e86\u5177\u6709\u66f4\u597d\u7684\u5b9e\u65f6\u6027\uff0c\u4e00\u822c\u91c7\u7528\u4e2d\u65ad\u65b9\u5f0f\u4e0eMCU\u8fdb\u884c\u901a\u4fe1\uff0c\u56e0\u6b64\u8fd8\u9700\u8981\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\u603b\u7ebf<\/p>\n

\n\t<\/p>\n

\n\t\u7528\u6765\u901a\u77e5MCU\u63a5\u6536\u4eceCAN\u603b\u7ebf\u4e0a\u53d1\u6765\u7684\u6570\u636e\u3002CAN\u7684\u63a5\u53e3\u5668\u4ef6\u91c7\u7528TJ-Al050\uff0c\u8be5\u5668\u4ef6\u662fCAN\u63a7\u5236\u5668\u4e0e\u7269\u7406\u603b\u7ebf\u4e4b\u95f4\u7684\u63a5\u53e3\u5668\u4ef6\u3002<\/p>\n

\n\t\u5728CAN\u6a21\u5757\u7535\u8def\u4e2d\uff0c\u5982\u56fe2\u6240\u793a\uff0cATmegal6\u7684SS\uff0cMOSI\uff0cMISO\uff0cSCK\uff0cINT\u5206\u522b\u4e0eMCP2510\u7684<\/p>\n

\n\t<\/p>\n

\n\t\uff0cSI\uff0cSO\uff0cSCK\uff0c<\/p>\n

\n\t<\/p>\n

\n\t\u76f8\u8fde\u63a5\u3002\u4e3a\u4e86\u8fdb\u4e00\u6b65\u63d0\u9ad8CAN\u603b\u7ebf\u8282\u70b9\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0cMCP2510\u7684TXCAN\u548cRXCAN\u901a\u8fc7\u5149\u8026<\/u>6N137\u5206\u522b\u4e0eTJAl050\u7684TXD\u548cRXD\u76f8\u8fde\u63a5\u3002<\/p>\n

\n\t\"AVR\u5355\u7247\u673a\u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u8bbe\u8ba1\"<\/p>\n

\n\t1.1.3CAN\u7684\u62a5\u6587\u683c\u5f0f<\/p>\n

\n\t\u5728\u603b\u7ebf\u4e2d\u4f20\u9001\u7684\u62a5\u6587\uff0c\u6bcf\u5e27\u75317\u90e8\u5206\u7ec4\u6210\u3002CAN\u534f\u8bae\u652f\u63012\u79cd\u62a5\u6587\u683c\u5f0f\uff0c\u5176\u552f\u4e00\u4e0d\u540c\u662f\u6807\u8bc6\u7b26\uff08ID\uff09\u957f\u5ea6\u4e0d\u540c\uff0c\u6807\u51c6\u683c\u5f0f\u4e3a11\u4f4d\uff0c\u6269\u5c55\u683c\u5f0f\u4e3a29\u4f4d\u3002\u672c\u8bbe\u8ba1\u4e2d\u4f7f\u7528\u6807\u51c6\u6570\u636e\u5e27\uff0c\u7531\u5e27\u8d77\u59cb\u3001\u4ef2\u88c1\u57df\u3001\u63a7\u5236\u57df\u3001\u6570\u636e\u57df\u3001CRC\u57df\u3001\u5e94\u7b54\u57df\u548c\u5e27\u7ed3\u5c3e\u7b497\u79cd\u4f4d\u57df\u7ec4\u6210\uff0c\u5982\u56fe3\u6240\u793a\u3002<\/p>\n

\n\t\"AVR\u5355\u7247\u673a\u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u8bbe\u8ba1\"<\/p>\n

\n\t\u5176\u4e2d\u6570\u636e\u57df\u7684\u957f\u5ea6\u4e3a0\uff5e8\u4e2a\u5b57\u8282\u3002\u4ef2\u88c1\u57df\u7531\u6807\u8bc6\u7b26\u548cRTR\u7ec4\u6210\uff0c\u5728\u6807\u51c6\u683c\u5f0f\u4e2d\uff0c\u6807\u8bc6\u7b26\u4e3a11\u4f4d\u3002\u5728\u672c\u4f8b\u901a\u4fe1\u534f\u8bae\u7684\u5236\u5b9a\u4e2d\uff0c\u6807\u5fd7\u4f4d\u7684\u524d4\u4f4d\u7528\u4f5c\u901a\u4fe1\u7684\u7c7b\u578b\u7801\uff0c\u540e7\u4f4d\u7528\u4f5cCAN\u8282\u70b9\u7684ID\u53f7\u3002\u6570\u636e\u57df\u5219\u7528\u6765\u5b58\u50a8\u901a\u4fe1\u7684\u5177\u4f53\u5185\u5bb9\u4fe1\u606f\uff0c\u4f8b\u5982\u7535\u68af\u6240\u5728\u7684\u697c\u5c42\uff0c\u8fd0\u52a8\u65b9\u5411\u7b49\u3002<\/p>\n

\n\t1.2LED\u663e\u793a\u6a21\u5757<\/p>\n

\n\t\u672c\u6a21\u5757\u75313\u72478x8 LED\u663e\u793a\u5c4f\u4ee5\u53ca\u4ee5\u5355\u7247\u673a\u4e3a\u6838\u5fc3\u7684\u9a71\u52a8\u7535\u8def\u6784\u6210\u3002LED\u663e\u793a\u5c4f\u7531LED\u70b9\u9635\u663e\u793a\u5668P2158\u6784\u6210\u3002\u5b83\u662f\u4ee5\u53d1\u5149\u4e8c\u6781\u7ba1<\/u>\u4e3a\u50cf\u7d20\uff0c\u6309\u7167\u884c\u4e0e\u5217\u7684\u987a\u5e8f\u6392\u5217\u800c\u6210\u7684\u663e\u793a\u5668\u4ef6\uff0c\u91c7\u7528\u9010\u884c\uff08\u6216\u9010\u5217\uff09\u626b\u63cf\u65b9\u5f0f\u5de5\u4f5c\uff0c\u7531\u5cf0\u503c\u8f83\u5927\u7684\u7a84\u8109\u51b2\u9a71\u52a8\uff0c\u4ece\u4e0a\u5230\u4e0b\u9010\u6b21\u4e0d\u65ad\u5730\u5bf9\u663e\u793a\u5c4f\u7684\u5404\u884c\u8fdb\u884c\u9009\u901a\uff0c\u540c\u65f6\u53c8\u5411\u5404\u5217\u9001\u51fa\u8868\u793a\u56fe\u5f62\u6216\u6587\u5b57\u4fe1\u606f\u7684\u8109\u51b2\u4fe1\u53f7\uff0c\u53cd\u590d\u5faa\u73af\u4ee5\u4e0a\u64cd\u4f5c\uff0c\u5c31\u53ef\u663e\u793a\u5404\u79cd\u56fe\u5f62\u6216\u6587\u5b57\u4fe1\u606f\u3002\u4ee5AVR\u9ad8\u901f\u5355\u7247\u673a\u4e3a\u6838\u5fc3\u7684\u9a71\u52a8\u7535\u8def\u5982\u56fe4\u6240\u793a\u3002<\/p>\n

\n\t\"AVR\u5355\u7247\u673a\u7535\u68af\u5916\u547c\u677f\u7cfb\u7edf\u8bbe\u8ba1\"<\/p>\n

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