{"id":36150,"date":"2025-05-08T02:40:46","date_gmt":"2025-05-07T18:40:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/36150.html"},"modified":"2025-05-08T02:40:46","modified_gmt":"2025-05-07T18:40:46","slug":"2025-%e5%b9%b4%e6%9c%80%e6%96%b0%e6%a0%91%e8%8e%93%e6%b4%be-pico-%e8%bf%9e%e6%8e%a5-esp8266-%e6%a8%a1%e5%9d%97%e5%ae%9e%e7%8e%b0-wifi-%e9%80%9a%e4%bf%a1%e3%80%81%e6%90%ad%e5%bb%ba-tcp-%e6%9c%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/36150.html","title":{"rendered":"2025 \u5e74\u6700\u65b0\u6811\u8393\u6d3e Pico \u8fde\u63a5 ESP8266 \u6a21\u5757\u5b9e\u73b0 WiFi \u901a\u4fe1\u3001\u642d\u5efa TCP \u670d\u52a1\u5668\u5b9e\u73b0\u6570\u636e\u4ea4\u4e92\u8be6\u7ec6\u6559\u7a0b"},"content":{"rendered":"

AT \u6307\u4ee4\u57fa\u672c\u7ed3\u6784\u6982\u8ff0<\/h3>\n

AT \u6307\u4ee4\u6700\u521d\u7531 Hayes \u516c\u53f8\u4e3a\u5176\u8c03\u5236\u89e3\u8c03\u5668（modem）\u5f00\u53d1，\u76ee\u7684\u662f\u63d0\u4f9b\u4e00\u79cd\u6807\u51c6\u5316\u7684\u65b9\u5f0f\u6765\u63a7\u5236\u901a\u4fe1\u8bbe\u5907\u3002\u6700\u65e9\u7684 Hayes Smartmodem 300 \u8c03\u5236\u89e3\u8c03\u5668（1981\u5e74）\u5f15\u5165\u4e86\u8fd9\u4e00\u6307\u4ee4\u96c6，\u56e0\u6b64 AT \u6307\u4ee4\u4e5f\u88ab\u79f0\u4e3a \u201cHayes \u547d\u4ee4\u96c6\u201d\u3002\u201cAT\u201d \u662f \u201cAttention\u201d \u7684\u7f29\u5199，\u7528\u4e8e\u5524\u9192\u8bbe\u5907\u5e76\u8868\u793a\u540e\u7eed\u5b57\u7b26\u4e32\u662f\u4e00\u4e2a\u547d\u4ee4\u3002<\/p>\n

\u968f\u7740\u901a\u4fe1\u6280\u672f\u7684\u53d1\u5c55，AT \u6307\u4ee4\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e GSM\u3001GPRS\u30013G\u30014G \u6a21\u5757\u3001\u84dd\u7259\u6a21\u5757\u3001Wi-Fi \u6a21\u5757\u7b49\u9886\u57df，\u6210\u4e3a\u8bb8\u591a\u8bbe\u5907\u7684\u6807\u51c6\u901a\u4fe1\u534f\u8bae\u3002\u73b0\u4ee3 AT \u6307\u4ee4\u96c6\u5df2\u7531 3GPP（\u7b2c\u4e09\u4ee3\u5408\u4f5c\u4f19\u4f34\u8ba1\u5212）\u7b49\u7ec4\u7ec7\u6807\u51c6\u5316，\u5c24\u5176\u5728\u79fb\u52a8\u901a\u4fe1\u9886\u57df\u3002<\/p>\n

\u57fa\u672c\u7ed3\u6784<\/p>\n

AT<<\/span>\u547d\u4ee4><\/span>[<\/span>\u53c2\u6570]<\/span>[<\/span>\u56de\u8f66\u7b26]<\/span><\/p>\n

ESP8266 \u6982\u8ff0<\/h3>\n

Wi-Fi \u6a21\u5757\u6982\u8ff0<\/p>\n

\u4e3b\u8981\u529f\u80fd：Wi-Fi\u6a21\u5757\u4e3b\u8981\u7528\u4e8e\u8bbe\u5907\u4e4b\u95f4\u7684\u65e0\u7ebf\u901a\u4fe1\u548c\u8fde\u63a5\u3002\u5b83\u53ef\u4ee5\u4f7f\u8bbe\u5907\u80fd\u591f\u901a\u8fc7Wi-Fi\u7f51\u7edc\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3001\u63a5\u5165\u4e92\u8054\u7f51\u4ee5\u53ca\u4e0e\u5176\u4ed6Wi-Fi\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002Wi-Fi\u6a21\u5757\u901a\u5e38\u914d\u5907\u6709\u65e0\u7ebf\u63a5\u6536\u5668\u548c\u53d1\u9001\u5668，\u53ef\u4ee5\u63a5\u6536\u6765\u81ea\u5176\u4ed6\u8bbe\u5907\u6216\u65e0\u7ebf\u8def\u7531\u5668\u7684\u65e0\u7ebf\u4fe1\u53f7，\u5e76\u53d1\u9001\u6570\u636e\u5230\u76ee\u6807\u8bbe\u5907\u6216\u8def\u7531\u5668\u3002<\/p>\n

\u6280\u672f\u6807\u51c6：Wi-Fi\u6a21\u5757\u9075\u5faaIEEE 802.11\u65e0\u7ebf\u901a\u4fe1\u6807\u51c6\u3002\u4e0d\u540c\u7684Wi-Fi\u6a21\u5757\u53ef\u80fd\u652f\u6301\u4e0d\u540c\u7684Wi-Fi\u6807\u51c6，\u5982802.11a\/b\/g\/n\/ac\/ax\u7b49\u3002\u8fd9\u4e9b\u6807\u51c6\u5b9a\u4e49\u4e86\u65e0\u7ebf\u4fe1\u53f7\u7684\u9891\u7387\u3001\u4f20\u8f93\u901f\u7387\u3001\u5b89\u5168\u6027\u548c\u5176\u4ed6\u901a\u4fe1\u53c2\u6570，\u4ee5\u786e\u4fddWi-Fi\u8bbe\u5907\u4e4b\u95f4\u7684\u4e92\u64cd\u4f5c\u6027\u3002<\/p>\n

\u786c\u4ef6\u7ec4\u6210：Wi-Fi\u6a21\u5757\u901a\u5e38\u7531\u65e0\u7ebf\u82af\u7247\u3001\u5929\u7ebf\u3001\u5c04\u9891\u524d\u7aef\u3001\u5904\u7406\u5668\u548c\u5b58\u50a8\u5668\u7b49\u7ec4\u6210\u3002\u65e0\u7ebf\u82af\u7247\u662fWi-Fi\u6a21\u5757\u7684\u6838\u5fc3\u90e8\u4ef6，\u8d1f\u8d23\u5904\u7406\u65e0\u7ebf\u4fe1\u53f7\u7684\u63a5\u6536\u548c\u53d1\u9001\u3002\u5929\u7ebf\u7528\u4e8e\u63a5\u6536\u548c\u53d1\u9001\u65e0\u7ebf\u4fe1\u53f7\u3002\u5c04\u9891\u524d\u7aef\u8d1f\u8d23\u4fe1\u53f7\u7684\u653e\u5927\u548c\u8c03\u7406\u3002\u5904\u7406\u5668\u548c\u5b58\u50a8\u5668\u7528\u4e8e\u6267\u884c\u65e0\u7ebf\u901a\u4fe1\u534f\u8bae\u3001\u7ba1\u7406\u6570\u636e\u4f20\u8f93\u548c\u5b58\u50a8\u76f8\u5173\u914d\u7f6e\u4fe1\u606f\u3002<\/p>\n

\u8f6f\u4ef6\u652f\u6301：Wi-Fi\u6a21\u5757\u901a\u5e38\u914d\u5907\u6709\u5d4c\u5165\u5f0f\u8f6f\u4ef6，\u7528\u4e8e\u5b9e\u73b0Wi-Fi\u901a\u4fe1\u534f\u8bae\u6808，\u5904\u7406\u6570\u636e\u4f20\u8f93\u548c\u7ba1\u7406\u7f51\u7edc\u8fde\u63a5\u3002\u8fd9\u4e9b\u8f6f\u4ef6\u901a\u5e38\u7531\u4f9b\u5e94\u5546\u63d0\u4f9b，\u5e76\u4e14\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u8fdb\u884c\u914d\u7f6e\u548c\u5b9a\u5236\u3002<\/p>\n

\u4f9b\u7535\u548c\u63a5\u53e3：Wi-Fi\u6a21\u5757\u901a\u5e38\u901a\u8fc7\u4f9b\u7535\u5f15\u811a\u4e0e\u5916\u90e8\u7535\u6e90\u8fde\u63a5，\u5e76\u901a\u8fc7UART\u3001SPI\u3001I2C\u7b49\u63a5\u53e3\u4e0e\u4e3b\u63a7\u5236\u5668\u6216\u5176\u4ed6\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002\u8fd9\u4e9b\u63a5\u53e3\u4f7f\u5f97Wi-Fi\u6a21\u5757\u80fd\u591f\u4e0e\u5404\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u8bbe\u5907\u96c6\u6210\u3002<\/p>\n

\u5e94\u7528\u9886\u57df：Wi-Fi\u6a21\u5757\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u7269\u8054\u7f51（IoT）\u8bbe\u5907\u3001\u667a\u80fd\u5bb6\u5c45\u3001\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u533b\u7597\u8bbe\u5907\u3001\u6d88\u8d39\u7535\u5b50\u4ea7\u54c1\u7b49\u9886\u57df\u3002\u5b83\u4eec\u53ef\u4ee5\u4f7f\u8fd9\u4e9b\u8bbe\u5907\u5b9e\u73b0\u65e0\u7ebf\u8fde\u63a5\u3001\u8fdc\u7a0b\u63a7\u5236\u548c\u4e92\u8054\u7f51\u63a5\u5165\u529f\u80fd\u3002<\/p>\n

ESP8266 \u6982\u8ff0<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

ESP8266 \u662f\u4e00\u6b3e\u4f4e\u6210\u672c\u3001\u9ad8\u6027\u80fd\u7684 Wi-Fi \u6a21\u5757，\u7531 Espressif Systems \u5f00\u53d1\u3002\u5b83\u96c6\u6210\u4e86 Wi-Fi \u529f\u80fd\u548cTCP\/IP\u534f\u8bae\u6808，\u5e76\u53ef\u901a\u8fc7\u4e32\u53e3\u4e0e\u4e3b\u63a7\u5236\u5668\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n

ESP \u901a\u5e38\u6307 Espressif Systems \u7684\u5fae\u63a7\u5236\u5668\u7cfb\u5217，\u5305\u62ec ESP8266 \u548c ESP32\u3002\u7531\u4e2d\u56fd\u516c\u53f8Espressif Systems（\u4e50\u946b\u4fe1\u606f\u79d1\u6280）\u5f00\u53d1，\u6210\u7acb\u4e8e2008\u5e74，\u603b\u90e8\u4f4d\u4e8e\u4e0a\u6d77\u3002\u751f\u4ea7\u4f4e\u6210\u672c\u3001\u9ad8\u6027\u80fd\u7684 Wi-Fi \u548c\u84dd\u7259 SoC（\u7cfb\u7edf\u7ea7\u82af\u7247），\u5e7f\u6cdb\u7528\u4e8e\u7269\u8054\u7f51（IoT）\u8bbe\u5907\u3002<\/p>\n

ESP8266 \u57fa\u7840 AT \u6307\u4ee4<\/h3>\n

ESP8266 \u57fa\u7840 AT \u6307\u4ee4\u96c6，\u7528\u4e8e\u901a\u8fc7\u4e32\u53e3\u63a7\u5236\u6a21\u5757\u3002\u6db5\u76d6\u4e86\u57fa\u672c\u914d\u7f6e\u3001Wi-Fi \u8fde\u63a5\u3001TCP\/IP \u901a\u4fe1\u7b49\u64cd\u4f5c\u3002\u914d\u5408 115200 \u6ce2\u7279\u7387 \u4e32\u53e3\u5de5\u5177\u4f7f\u7528（\u4f8b\u5982：Arduino IDE \u4e32\u53e3\u76d1\u89c6\u5668\u3001PuTTY \u7b49）\u3002<\/p>\n

\u57fa\u672c\u529f\u80fd<\/p>\n\n\u6307\u4ee4\u529f\u80fd\u793a\u4f8b\u54cd\u5e94<\/tr>\n\n\n\n\n\n
AT<\/td>\n\u6d4b\u8bd5\u6a21\u5757\u662f\u5426\u6b63\u5e38<\/td>\nAT<\/td>\nOK<\/td>\n<\/tr>\n
AT+RST<\/td>\n\u91cd\u542f\u6a21\u5757<\/td>\nAT+RST<\/td>\nOK + \u91cd\u542f\u4fe1\u606f<\/td>\n<\/tr>\n
AT+GMR<\/td>\n\u67e5\u770b\u56fa\u4ef6\u7248\u672c<\/td>\nAT+GMR<\/td>\n<\u7248\u672c\u53f7>\\\\r\\\\nOK<\/td>\n<\/tr>\n
ATE0\/ATE1<\/td>\n\u5173\u95ed\/\u5f00\u542f\u56de\u663e<\/td>\nATE0<\/td>\nOK<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Wi-Fi \u6a21\u5f0f\u8bbe\u7f6e<\/p>\n\n\u6307\u4ee4\u529f\u80fd\u793a\u4f8b\u54cd\u5e94<\/tr>\n\n\n\n
AT+CWMODE=<mode><\/td>\n\u8bbe\u7f6e Wi-Fi \u6a21\u5f0f<\/td>\nAT+CWMODE=1<\/td>\nOK<\/td>\n<\/tr>\n
AT+CWMODE?<\/td>\n\u67e5\u8be2\u5f53\u524d\u6a21\u5f0f<\/td>\nAT+CWMODE?<\/td>\n+CWMODE:<mode>\\\\r\\\\nOK<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

1<\/span>：Station \u6a21\u5f0f（\u5ba2\u6237\u7aef，\u8fde\u63a5\u8def\u7531\u5668）
\n2<\/span>：AP \u6a21\u5f0f（\u70ed\u70b9，\u5176\u4ed6\u8bbe\u5907\u53ef\u8fde\u63a5）
\n3<\/span>：Station+<\/span>AP \u6df7\u5408\u6a21\u5f0f<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u8fde\u63a5 Wi-Fi（Station \u6a21\u5f0f）<\/p>\n\n\u6307\u4ee4\u529f\u80fd\u793a\u4f8b\u54cd\u5e94<\/tr>\n\n\n\n\n\n
AT+CWLAP<\/td>\n\u626b\u63cf\u9644\u8fd1 AP<\/td>\nAT+CWLAP<\/td>\n\u8fd4\u56de\u9644\u8fd1\u70ed\u70b9\u5217\u8868<\/td>\n<\/tr>\n
AT+CWJAP="SSID","PWD"<\/td>\n\u8fde\u63a5 Wi-Fi<\/td>\nAT+CWJAP="home","123456"<\/td>\nOK（\u6210\u529f\u65f6）<\/td>\n<\/tr>\n
AT+CWQAP<\/td>\n\u65ad\u5f00\u5f53\u524d Wi-Fi<\/td>\nAT+CWQAP<\/td>\nOK<\/td>\n<\/tr>\n
AT+CIFSR<\/td>\n\u67e5\u8be2\u672c\u5730 IP<\/td>\nAT+CIFSR<\/td>\n\u8fd4\u56de IP \u5730\u5740<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

AP \u6a21\u5f0f\u914d\u7f6e（\u70ed\u70b9）<\/p>\n\n\u6307\u4ee4\u529f\u80fd\u793a\u4f8b\u54cd\u5e94<\/tr>\n\n\n\n
AT+CWSAP="SSID","PWD",ch,ecn<\/td>\n\u8bbe\u7f6e AP \u53c2\u6570<\/td>\nAT+CWSAP="ESP","pass",5,3<\/td>\nOK<\/td>\n<\/tr>\n
AT+CWLIF<\/td>\n\u67e5\u770b\u8fde\u63a5\u7684\u8bbe\u5907<\/td>\nAT+CWLIF<\/td>\n\u8fd4\u56de\u5ba2\u6237\u7aef IP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

ch：\u4fe1\u9053（1~13）
\necn：\u52a0\u5bc6\u65b9\u5f0f（0-OPEN, 2-WPA_PSK, 3-WPA2_PSK, 4-WPA_WPA2_PSK）<\/p>\n

TCP\/IP \u901a\u4fe1<\/p>\n\n\u6307\u4ee4\u529f\u80fd\u793a\u4f8b\u54cd\u5e94<\/tr>\n\n\n\n\n\n\n
AT+CIPSTATUS<\/td>\n\u67e5\u8be2\u8fde\u63a5\u72b6\u6001<\/td>\nAT+CIPSTATUS<\/td>\n\u8fd4\u56de\u5f53\u524d\u8fde\u63a5\u4fe1\u606f<\/td>\n<\/tr>\n
AT+CIPSTART="TYPE","IP",port<\/td>\n\u5efa\u7acb TCP\/UDP \u8fde\u63a5<\/td>\nAT+CIPSTART="TCP","192.168.1.100",80<\/td>\nOK \u6216 ERROR<\/td>\n<\/tr>\n
AT+CIPSEND=<length><\/td>\n\u53d1\u9001\u6570\u636e<\/td>\nAT+CIPSEND=4 > ABCD<\/td>\nSEND OK<\/td>\n<\/tr>\n
AT+CIPCLOSE<\/td>\n\u5173\u95ed\u8fde\u63a5<\/td>\nAT+CIPCLOSE<\/td>\nOK<\/td>\n<\/tr>\n
AT+CIPMUX=<mode><\/td>\n\u8bbe\u7f6e\u8fde\u63a5\u6a21\u5f0f<\/td>\nAT+CIPMUX=1<\/td>\nOK<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

0：\u5355\u8fde\u63a5
\n1：\u591a\u8fde\u63a5（\u9700\u914d\u5408 `AT+CIPSERVER` \u4f7f\u7528）<\/p>\n

HTTP \u8bf7\u6c42\u793a\u4f8b<\/p>\n

AT+CIPSTART="TCP","www.example.com",80
\nAT+CIPSEND=48
\n> GET \/ HTTP\/1.1\\\\r\\\\nHost: www.example.com\\\\r\\\\n\\\\r\\\\n
\n# \u8fd4\u56de\u7f51\u9875\u6570\u636e\u540e\u5173\u95ed\u8fde\u63a5
\nAT+CIPCLOSE<\/p>\n

RXD \/ TXD<\/h3>\n

TXD（Transmit Data）\u548c RXD（Receive Data）\u662f\u4e32\u53e3\u901a\u4fe1（UART，Universal Asynchronous Receiver \/ Transmitter）\u4e2d\u7684\u4e24\u4e2a\u5173\u952e\u5f15\u811a，\u5206\u522b\u7528\u4e8e\u6570\u636e\u7684\u53d1\u9001\u548c\u63a5\u6536\u3002TXD \u548c RXD \u5171\u540c\u5b9e\u73b0\u4e32\u53e3\u901a\u4fe1\u7684\u53cc\u5411\u6570\u636e\u4ea4\u6362，TXD\u8d1f\u8d23\u8f93\u51fa，RXD\u8d1f\u8d23\u8f93\u5165，\u662f\u4e32\u53e3\u901a\u4fe1\u7684\u57fa\u7840\u7ec4\u4ef6\u3002<\/p>\n

TXD（\u53d1\u9001\u6570\u636e）<\/p>\n

\u4f5c\u7528：\u7528\u4e8e\u8bbe\u5907\u53d1\u9001\u6570\u636e\u5230\u5916\u90e8\u8bbe\u5907\u3002
\n\u5de5\u4f5c\u539f\u7406：\u5f53\u4e00\u4e2a\u8bbe\u5907（\u4f8b\u5982\u5fae\u63a7\u5236\u5668\u6216GSM\u6a21\u5757）\u9700\u8981\u5411\u53e6\u4e00\u8bbe\u5907\u53d1\u9001\u6570\u636e\u65f6，\u6570\u636e\u901a\u8fc7TXD\u5f15\u811a\u4ee5\u4e32\u884c\u5f62\u5f0f\u8f93\u51fa\u3002
\n\u793a\u4f8b：\u5fae\u63a7\u5236\u5668\u901a\u8fc7TXD\u53d1\u9001AT\u6307\u4ee4\u5230\u8c03\u5236\u89e3\u8c03\u5668\u3002<\/p>\n

RXD（\u63a5\u6536\u6570\u636e）<\/p>\n

\u4f5c\u7528：\u7528\u4e8e\u8bbe\u5907\u63a5\u6536\u6765\u81ea\u5916\u90e8\u8bbe\u5907\u7684\u6570\u636e\u3002
\n\u5de5\u4f5c\u539f\u7406：\u5f53\u5916\u90e8\u8bbe\u5907\u901a\u8fc7\u5176TXD\u5f15\u811a\u53d1\u9001\u6570\u636e\u65f6，\u76ee\u6807\u8bbe\u5907\u7684RXD\u5f15\u811a\u63a5\u6536\u8fd9\u4e9b\u6570\u636e\u3002
\n\u793a\u4f8b：\u8c03\u5236\u89e3\u8c03\u5668\u901a\u8fc7RXD\u8fd4\u56deAT\u6307\u4ee4\u7684\u54cd\u5e94\u7ed9\u5fae\u63a7\u5236\u5668\u3002<\/p>\n

\u4e00\u5bf9\u4e00\u901a\u4fe1：TXD \u548c RXD \u901a\u5e38\u4ee5\u4ea4\u53c9\u65b9\u5f0f\u8fde\u63a5，\u5373\u8bbe\u5907 A \u7684 TXD \u8fde\u63a5\u5230\u8bbe\u5907 B \u7684 RXD，\u8bbe\u5907 B \u7684 TXD \u8fde\u63a5\u5230\u8bbe\u5907 A \u7684 RXD\u3002<\/p>\n

ESP8266 \u6a21\u5757\u5de5\u4f5c\u6a21\u5f0f<\/h3>\n

STA \u6a21\u5f0f<\/p>\n

\u5728\u6b64\u6a21\u5f0f\u4e0b，\u6a21\u5757\u53ef\u8fde\u63a5\u5176\u4ed6\u8bbe\u5907\u63d0\u4f9b\u7684\u65e0\u7ebf\u7f51\u7edc，\u4f8b\u5982\u901a\u8fc7 WIFI \u8fde\u63a5\u81f3\u8def\u7531\u5668，\u4ece\u800c\u53ef\u4ee5\u8bbf\u95ee\u4e92\u8054\u7f51，\u8fdb\u800c\u5b9e\u73b0\u624b\u673a\u6216\u7535\u8111\u901a\u8fc7\u4e92\u8054\u7f51\u5b9e\u73b0\u5bf9\u8bbe\u5907\u7684\u8fdc\u7a0b\u63a7\u5236\u3002<\/p>\n

\u7b80\u5355\u6765\u8bf4，\u6b64\u6a21\u5f0f\u4e0b，\u8be5\u6a21\u5757\u76f8\u5f53\u4e8e\u4e00\u4e2a\u7528\u6237，\u9700\u8981\u94fe\u63a5\u5916\u90e8\u7684 WIFI（\u6216\u81ea\u5df1\u7684\u70ed\u70b9），\u901a\u8fc7\u94fe\u63a5\u7684 WIFI \u8fdb\u884c\u4e0e\u5176\u4ed6\u8bbe\u5907\u7684\u901a\u4fe1\u3002<\/p>\n

AP \u6a21\u5f0f<\/p>\n

AP \u6a21\u5f0f\u4e3a\u9ed8\u8ba4\u7684\u6a21\u5f0f，\u5728\u6b64\u6a21\u5f0f\u4e0b，\u6a21\u5757\u5c06\u4f5c\u4e3a\u70ed\u70b9\u4f9b\u5176\u4ed6\u8bbe\u5907\u8fde\u63a5， \u4ece\u800c\u8ba9\u624b\u673a\u6216\u7535\u8111\u76f4\u63a5\u4e0e\u6a21\u5757\u8fdb\u884c\u901a\u8baf，\u5b9e\u73b0\u5c40\u57df\u7f51\u7684\u65e0\u7ebf\u63a7\u5236\u3002<\/p>\n

\u7b80\u5355\u6765\u8bf4，\u6b64\u6a21\u5f0f\u4e0b，\u8be5\u6a21\u5757\u76f8\u5f53\u4e8e\u63d0\u4f9b\u4e00\u4e2a\u70ed\u70b9，\u521b\u5efa\u4e00\u4e2a\u5c0f\u8303\u56f4\u7684\u5c40\u57df\u7f51，\u51e1\u662f\u8fde\u63a5\u4e0a\u7684\u8bbe\u5907\u5c31\u80fd\u4e0e\u5176\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n

STA + AP \u6a21\u5f0f<\/p>\n

\u8be5\u6a21\u5f0f\u4e3a STA \u6a21\u5f0f\u4e0e AP \u6a21\u5f0f\u5171\u5b58\u7684\u4e00\u79cd\u6a21\u5f0f，\u6a21\u5757\u65e2\u80fd\u8fde\u63a5\u81f3\u5176\u4ed6 \u8bbe\u5907\u63d0\u4f9b\u7684\u65e0\u7ebf\u7f51\u7edc，\u53c8\u80fd\u4f5c\u4e3a\u70ed\u70b9，\u4f9b\u5176\u4ed6\u8bbe\u5907\u8fde\u63a5，\u4ee5\u5b9e\u73b0\u5e7f\u57df\u7f51\u4e0e\u5c40\u57df\u7f51\u7684\u65e0\u7f1d\u5207\u6362， \u65b9\u4fbf\u64cd\u4f5c\u4f7f\u7528\u3002<\/p>\n

WiFi ESP8266 \u642d\u5efa\u670d\u52a1\u5668<\/h3>\n

pico \u7aef\u8fde\u63a5 WiFi \u542f\u52a8\u670d\u52a1\u5668<\/p>\n

import<\/span> machine
\nimport<\/span> time<\/p>\n

# Initialize UART with larger buffer<\/span>
\nuart =<\/span> machine.<\/span>UART(<\/span>0<\/span>,<\/span> baudrate=<\/span>115200<\/span>,<\/span> tx=<\/span>0<\/span>,<\/span> rx=<\/span>1<\/span>,<\/span> timeout=<\/span>100<\/span>,<\/span> rxbuf=<\/span>2048<\/span>)<\/span> # Adjust pins, increase buffer<\/span><\/p>\n

# Send AT command<\/span>
\ndef<\/span> send_cmd<\/span>(<\/span>cmd,<\/span> wait=<\/span>1000<\/span>)<\/span>:<\/span>
\n uart.<\/span>write(<\/span>cmd +<\/span> "\\\\r\\\\n"<\/span>)<\/span>
\n time.<\/span>sleep_ms(<\/span>wait)<\/span>
\n response =<\/span> ""<\/span>
\n timeout =<\/span> time.<\/span>ticks_ms(<\/span>)<\/span> +<\/span> wait
\n while<\/span> time.<\/span>ticks_ms(<\/span>)<\/span> <<\/span> timeout:<\/span>
\n if<\/span> uart.<\/span>any<\/span>(<\/span>)<\/span>:<\/span>
\n data =<\/span> uart.<\/span>read(<\/span>)<\/span>
\n if<\/span> data:<\/span> # Check if data is not None<\/span>
\n try<\/span>:<\/span>
\n response +=<\/span> data.<\/span>decode(<\/span>'utf-8'<\/span>)<\/span>
\n except<\/span> UnicodeError:<\/span>
\n response +=<\/span> str<\/span>(<\/span>data)<\/span> # Fallback for non-UTF-8 data<\/span>
\n time.<\/span>sleep_ms(<\/span>10<\/span>)<\/span> # Avoid CPU overload<\/span>
\n return<\/span> response<\/p>\n

# Initialize ESP8266<\/span>
\ndef<\/span> init_esp8266<\/span>(<\/span>)<\/span>:<\/span>
\n print<\/span>(<\/span>"Initializing ESP8266…"<\/span>)<\/span>
\n response =<\/span> send_cmd(<\/span>"AT"<\/span>,<\/span> 500<\/span>)<\/span> # Test communication<\/span>
\n if<\/span> "OK"<\/span> in<\/span> response:<\/span>
\n print<\/span>(<\/span>"AT OK"<\/span>)<\/span>
\n else<\/span>:<\/span>
\n print<\/span>(<\/span>"AT failed:"<\/span>,<\/span> response)<\/span>
\n return<\/span> False<\/span>
\n send_cmd(<\/span>"AT+CWMODE=1"<\/span>,<\/span> 500<\/span>)<\/span> # Set to Station mode<\/span>
\n send_cmd(<\/span>"AT+CIPRECVTYPE=0"<\/span>,<\/span> 500<\/span>)<\/span> # Set to normal data receive mode<\/span>
\n return<\/span> True<\/span><\/p>\n

# Connect to WiFi<\/span>
\ndef<\/span> connect_wifi<\/span>(<\/span>ssid,<\/span> password)<\/span>:<\/span>
\n print<\/span>(<\/span>"Connecting to WiFi…"<\/span>)<\/span>
\n response =<\/span> send_cmd(<\/span>f'AT+CWJAP="<\/span>{<\/span>ssid}<\/span><\/span>","<\/span>{<\/span>password}<\/span><\/span>"'<\/span><\/span>,<\/span> 10000<\/span>)<\/span> # Connect to WiFi<\/span>
\n if<\/span> "OK"<\/span> in<\/span> response:<\/span>
\n print<\/span>(<\/span>"WiFi connected"<\/span>)<\/span>
\n ip_response =<\/span> send_cmd(<\/span>"AT+CIFSR"<\/span>,<\/span> 1000<\/span>)<\/span> # Get IP address<\/span>
\n print<\/span>(<\/span>"IP info:"<\/span>,<\/span> ip_response)<\/span>
\n return<\/span> True<\/span>
\n else<\/span>:<\/span>
\n print<\/span>(<\/span>"WiFi connection failed:"<\/span>,<\/span> response)<\/span>
\n return<\/span> False<\/span><\/p>\n

# Start TCP server<\/span>
\ndef<\/span> start_tcp_server<\/span>(<\/span>port=<\/span>12345<\/span>)<\/span>:<\/span>
\n print<\/span>(<\/span>"Starting TCP server…"<\/span>)<\/span>
\n send_cmd(<\/span>"AT+CIPMUX=1"<\/span>,<\/span> 500<\/span>)<\/span> # Enable multiple connections<\/span>
\n response =<\/span> send_cmd(<\/span>f'AT+CIPSERVER=1,<\/span>{<\/span>port}<\/span><\/span>'<\/span><\/span>,<\/span> 1000<\/span>)<\/span> # Start server on port<\/span>
\n if<\/span> "OK"<\/span> in<\/span> response:<\/span>
\n print<\/span>(<\/span>f"TCP server started on port <\/span>{<\/span>port}<\/span><\/span>"<\/span><\/span>)<\/span>
\n return<\/span> True<\/span>
\n else<\/span>:<\/span>
\n print<\/span>(<\/span>"Failed to start TCP server:"<\/span>,<\/span> response)<\/span>
\n return<\/span> False<\/span><\/p>\n

# Receive and respond to messages<\/span>
\ndef<\/span> handle_tcp_communication<\/span>(<\/span>)<\/span>:<\/span>
\n print<\/span>(<\/span>"Listening for messages…"<\/span>)<\/span>
\n buffer<\/span> =<\/span> ""<\/span> # Buffer to accumulate UART data<\/span>
\n while<\/span> True<\/span>:<\/span>
\n if<\/span> uart.<\/span>any<\/span>(<\/span>)<\/span>:<\/span>
\n data =<\/span> uart.<\/span>read(<\/span>uart.<\/span>any<\/span>(<\/span>)<\/span>)<\/span> # Read exact number of available bytes<\/span>
\n if<\/span> data:<\/span>
\n try<\/span>:<\/span>
\n buffer<\/span> +=<\/span> data.<\/span>decode(<\/span>'utf-8'<\/span>)<\/span>
\n except<\/span> UnicodeError:<\/span>
\n buffer<\/span> +=<\/span> str<\/span>(<\/span>data)<\/span>
\n print<\/span>(<\/span>"Non-UTF-8 data received:"<\/span>,<\/span> data)<\/span><\/p>\n

# Debug: Print raw buffer content<\/span>
\n # print("Raw buffer:", repr(buffer))<\/span><\/p>\n

# Clean up CONNECT\/CLOSED messages<\/span>
\n buffer<\/span> =<\/span> buffer<\/span>.<\/span>replace(<\/span>",CONNECT\\\\r\\\\n"<\/span>,<\/span> ""<\/span>)<\/span>
\n buffer<\/span> =<\/span> buffer<\/span>.<\/span>replace(<\/span>",CLOSED\\\\r\\\\n"<\/span>,<\/span> ""<\/span>)<\/span><\/p>\n

# Process complete +IPD messages<\/span>
\n while<\/span> "+IPD"<\/span> in<\/span> buffer<\/span>:<\/span>
\n ipd_start =<\/span> buffer<\/span>.<\/span>find(<\/span>"+IPD"<\/span>)<\/span>
\n colon_pos =<\/span> buffer<\/span>.<\/span>find(<\/span>":"<\/span>,<\/span> ipd_start)<\/span>
\n if<\/span> colon_pos ==<\/span> –<\/span>1<\/span>:<\/span>
\n break<\/span> # Incomplete +IPD, wait for more data<\/span><\/p>\n

# Extract conn_id and data_len<\/span>
\n header =<\/span> buffer<\/span>[<\/span>ipd_start:<\/span>colon_pos]<\/span>
\n parts =<\/span> header.<\/span>split(<\/span>","<\/span>)<\/span>
\n if<\/span> len<\/span>(<\/span>parts)<\/span> <<\/span> 3<\/span>:<\/span>
\n break<\/span> # Invalid +IPD format<\/span>
\n try<\/span>:<\/span>
\n conn_id =<\/span> parts[<\/span>1<\/span>]<\/span>
\n data_len =<\/span> int<\/span>(<\/span>parts[<\/span>2<\/span>]<\/span>.<\/span>split(<\/span>":"<\/span>)<\/span>[<\/span>0<\/span>]<\/span>)<\/span>
\n except<\/span> (<\/span>IndexError,<\/span> ValueError)<\/span>:<\/span>
\n break<\/span> # Malformed header<\/span><\/p>\n

# Check if enough data is available<\/span>
\n data_start =<\/span> colon_pos +<\/span> 1<\/span>
\n if<\/span> len<\/span>(<\/span>buffer<\/span>[<\/span>data_start:<\/span>]<\/span>)<\/span> <<\/span> data_len:<\/span>
\n break<\/span> # Incomplete data, wait for more<\/span><\/p>\n

# Extract client data<\/span>
\n client_data =<\/span> buffer<\/span>[<\/span>data_start:<\/span>data_start +<\/span> data_len]<\/span>
\n print<\/span>(<\/span>f"Received from conn <\/span>{<\/span>conn_id}<\/span><\/span>: <\/span>{<\/span>client_data}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

# Send response<\/span>
\n response =<\/span> f"Echo: <\/span>{<\/span>client_data}<\/span><\/span>"<\/span><\/span>
\n send_cmd(<\/span>f'AT+CIPSEND=<\/span>{<\/span>conn_id}<\/span><\/span>,<\/span>{<\/span>len<\/span>(<\/span>response)<\/span>}<\/span><\/span>'<\/span><\/span>,<\/span> 1000<\/span>)<\/span>
\n time.<\/span>sleep_ms(<\/span>100<\/span>)<\/span> # Ensure ESP8266 processes send command<\/span>
\n send_cmd(<\/span>response,<\/span> 1000<\/span>)<\/span>
\n send_cmd(<\/span>f'AT+CIPCLOSE=<\/span>{<\/span>conn_id}<\/span><\/span>'<\/span><\/span>,<\/span> 500<\/span>)<\/span> # Close connection<\/span>
\n print<\/span>(<\/span>f"Sent to conn <\/span>{<\/span>conn_id}<\/span><\/span>: <\/span>{<\/span>response}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

# Remove processed data from buffer<\/span>
\n buffer<\/span> =<\/span> buffer<\/span>[<\/span>data_start +<\/span> data_len:<\/span>]<\/span><\/p>\n

time.<\/span>sleep_ms(<\/span>10<\/span>)<\/span> # Faster polling for UART data<\/span><\/p>\n

# Main program<\/span>
\ntry<\/span>:<\/span>
\n if<\/span> init_esp8266(<\/span>)<\/span>:<\/span>
\n # Replace with your WiFi credentials<\/span>
\n if<\/span> connect_wifi(<\/span>"CMCC-308"<\/span>,<\/span> "165123308"<\/span>)<\/span>:<\/span>
\n if<\/span> start_tcp_server(<\/span>)<\/span>:<\/span>
\n handle_tcp_communication(<\/span>)<\/span>
\nexcept<\/span> Exception as<\/span> e:<\/span>
\n print<\/span>(<\/span>"Error:"<\/span>,<\/span> e)<\/span><\/p>\n

PC \u6d4b\u8bd5\u8bf7\u6c42<\/p>\n

import<\/span> socket
\nimport<\/span> time<\/p>\n

# ESP8266 IP and port<\/span>
\nESP8266_IP =<\/span> "192.168.1.12"<\/span> # Update with actual IP from AT+CIFSR<\/span>
\nPORT =<\/span> 12345<\/span><\/p>\n

def<\/span> tcp_client<\/span>(<\/span>)<\/span>:<\/span>
\n # Create socket<\/span>
\n client =<\/span> socket.<\/span>socket(<\/span>socket.<\/span>AF_INET,<\/span> socket.<\/span>SOCK_STREAM)<\/span>
\n client.<\/span>settimeout(<\/span>10.0<\/span>)<\/span> # Increase timeout to 10 seconds<\/span>
\n try<\/span>:<\/span>
\n # Connect to ESP8266<\/span>
\n client.<\/span>connect(<\/span>(<\/span>ESP8266_IP,<\/span> PORT)<\/span>)<\/span>
\n print<\/span>(<\/span>f"Connected to <\/span>{<\/span>ESP8266_IP}<\/span><\/span>:<\/span>{<\/span>PORT}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

# Send test message<\/span>
\n timestamp =<\/span> int<\/span>(<\/span>time.<\/span>time(<\/span>)<\/span>)<\/span>
\n message =<\/span> f"msg:<\/span>{<\/span>timestamp}<\/span><\/span> hello world."<\/span><\/span>
\n client.<\/span>send(<\/span>message.<\/span>encode(<\/span>'utf-8'<\/span>)<\/span>)<\/span>
\n print<\/span>(<\/span>"Sent:"<\/span>,<\/span> message)<\/span><\/p>\n

# Receive response<\/span>
\n data =<\/span> client.<\/span>recv(<\/span>1024<\/span>)<\/span>
\n print<\/span>(<\/span>"Received:"<\/span>,<\/span> data.<\/span>decode(<\/span>'utf-8'<\/span>)<\/span>)<\/span><\/p>\n

except<\/span> Exception as<\/span> e:<\/span>
\n print<\/span>(<\/span>"Error:"<\/span>,<\/span> e)<\/span>
\n finally<\/span>:<\/span>
\n client.<\/span>close(<\/span>)<\/span>
\n print<\/span>(<\/span>"Connection closed"<\/span>)<\/span><\/p>\n

if<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
\n tcp_client(<\/span>)<\/span><\/p>\n

\u8fd0\u884c\u7ed3\u679c<\/p>\n

python .\\\\pc_client.py
\nConnected to 192.168.1.12:12345
\nSent: msg:1746379223 hello world.
\nReceived: Echo: msg:1746379223 hello world.
\nConnection closed<\/p>\n

Initializing ESP8266…
\nAT OK
\nConnecting to WiFi…
\nWiFi connected
\nIP info: AT+CIFSR
\n+CIFSR:STAIP,"192.168.1.12"
\n+CIFSR:STAMAC,"40:91:51:4b:b6:55"<\/p>\n

OK<\/p>\n

Starting TCP server…
\nTCP server started on port 12345
\nListening for messages…
\nReceived from conn 0: msg:1746379223 hello world.
\nSent to conn 0: Echo: msg:1746379223 hello world.<\/p>\n","protected":false},"excerpt":{"rendered":"

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