【得捷Follow me第4期】项目任务提交

江华210

【得捷Follow me第4期】项目任务提交 [复制链接]

 

入门任务：开发环境搭建，BLINK，驱动液晶显示器进行显示。

W5500-RPI-PICO开发板对Arduino有很好的支持，安扎官方文档，我们先在arduino IDE中添加开发板地址，由于我购买了一块cardputer作为项目中的协处理器，负责屏幕显示，因此也一并添加相关支持。：

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https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/arduino/package_m5stack_index.json

 

  添加完成后，在开发板管理器中搜索pico并安装。

 

blink完成非常简单，直接使用arduino官方的basic example blink，不需要任何修改，直接上传。

  上传完成后就可以看到绿灯闪起来。

 

液晶屏是在cardputer上进行驱动的，我先在cardputer上初始化好液晶屏，然后开启一个硬件串口作为输入，当接收到信息时将它显示在屏幕上。这样就可以实现一个简单的串口显示器。W5500-RPI-PICO只需要将需要显示的内容用串口发送出去就可以。

 

在使用cardputer之前，我们需要安装一下对应的库。

 

安装好后使用起来就非常简单了。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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#include "M5Cardputer.h"
#include <HardwareSerial.h>

HardwareSerial mySerial(2);

void setup() {
  auto cfg = M5.config();
  M5Cardputer.begin(cfg, true);
  M5Cardputer.Display.setRotation(1);
  M5Cardputer.Display.setTextColor(GREEN);
  M5Cardputer.Display.setTextDatum(middle_center);
  M5Cardputer.Display.setTextFont(&fonts::Orbitron_Light_24);
  M5Cardputer.Display.setTextSize(1);
  M5Cardputer.Display.drawString("Ready",
                                 M5Cardputer.Display.width() / 2,
                                 M5Cardputer.Display.height() / 2);
  Serial.begin(115200);
  mySerial.begin(115200, SERIAL_8N1, 2, 1);
}

void loop() {
  if (mySerial.available()) {
    String receivedString = mySerial.readString();
    Serial.println(receivedString);
    if (receivedString != "") {
      M5Cardputer.Display.clear();
      M5Cardputer.Display.drawString(receivedString,
                                     M5Cardputer.Display.width() / 2,
                                     M5Cardputer.Display.height() / 2);
    }
  }
}

 

这里我们用cardputer上的GPIO1和GPIO2作为TX和RX。接下来我们用pico 使用serial1打印一个hello，就可以显示在cardputer上。注意由于pico在连接上串口监视器后并不会重置，因此要先等待串口连接后，才可以继续执行串口打印任务，否则无法在串口看到输出。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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void setup() {
  Serial.begin(115200);
  Serial1.begin(115200);
  while (!Serial)
    ;
  Serial.println("Now send Hello");
  Serial1.println("Hello");
}

void loop() {
}

 

基础任务一：完成主控板W5500初始化(静态IP配置)，并能使用局域网电脑ping通，同时W5500可以ping通互联网站点；通过抓包软件(Wireshark、Sniffer等)抓取本地PC的ping报文，展示并分析。

 

同样的，先安装一下需要的库。这个库需要自己去github上下载下来zip，然后在arduino ide中导入zip库。

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静态配置好ip，MAC等参数，就可以联网，然后分别解析dns并ping一下三个网站。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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#include <Ethernet.h>
#include <Dns.h>
#include <EthernetICMP.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xE1, 0xF2, 0xE3 };
IPAddress ip(192, 168, 50, 188);
IPAddress gateway(192, 168, 50, 1);
IPAddress myDns(8, 8, 8, 8);
IPAddress subnet(255, 255, 255, 0);

IPAddress setNet() {
  Serial.println("Ethernet Begin");
  Ethernet.init(17); 
  // DHCP
  // Ethernet.begin(mac);
  // 静态IP设置
  Ethernet.begin(mac, ip, myDns, gateway, subnet);

  // 打印INFO
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());
  Serial.print("My subnet: ");
  Serial.println(Ethernet.subnetMask());
  Serial.print("My DNS address: ");
  Serial.println(Ethernet.dnsServerIP());
  Serial.print("My GateWay address: ");
  Serial.println(Ethernet.gatewayIP());
  Serial.print("My Mac address: ");
  byte macBuffer[6];
  Ethernet.MACAddress(macBuffer);
  for (byte octet = 0; octet < 6; octet++) {
    Serial.print(macBuffer[octet], HEX);
    if (octet < 5) {
      Serial.print('-');
    }
  }
  Serial.println("");

  return Ethernet.localIP();
}

DNSClient dnClient;
SOCKET pingSocket = 4;
EthernetICMPPing ping(pingSocket, (uint8_t)random(0, 255));

void pingTest(const IPAddress &dstip) {
  EthernetICMPEchoReply echoReply = ping(dstip, 4);
  char buffer[256];
  if (echoReply.status == SUCCESS) {
    sprintf(buffer,
            "Reply[%d] from: %d.%d.%d.%d: bytes=%d time=%ldms TTL=%d",
            echoReply.data.seq,
            echoReply.addr[0],
            echoReply.addr[1],
            echoReply.addr[2],
            echoReply.addr[3],
            REQ_DATASIZE,
            millis() - echoReply.data.time,
            echoReply.ttl);
  } else {
    sprintf(buffer, "Echo request failed; %d", echoReply.status);
  }
  Serial.println(buffer);
}

void ping_site() {
  dnClient.begin(Ethernet.dnsServerIP());
  const char domains[3][20] = { "www.eeworld.com.cn", "www.digikey.cn", "www.digikey.com" };
  IPAddress dstip;
  for (int i = 0; i < 3; i++) {
    if (dnClient.getHostByName(domains[i], dstip) == 1) {
      Serial.print(domains[i]);
      Serial.print(" = ");
      Serial.println(dstip);
      pingTest(dstip);
    } else
      Serial.println(F("dns lookup failed"));
  }
}

void setup() {
  Serial.begin(115200);
  while (!Serial)
    ;
  setNet();
  ping_site();
}

void loop() {
  
}

 

打开wireshark开始抓包，然后用电脑ping一下上面串口打印出的W5500-RPI-PICO开发板，接着在wireshark中用ip地址筛选，就可以看到捕获到的icmp包。

 

 

 

基础任务二：主控板建立TCPIP或UDP服务器，局域网PC使用TCPIP或UDP客户端进行连接并发送数据，主控板接收到数据后，送液晶屏显示(没有则通过串口打印显示)；通过抓包软件抓取交互报文，展示并分析。

w5500-rpi-pico连接上网络后，建立一个tcp服务器并监听5000端口。如果有客户连入，则循环读取内容，并将内容添加至字符串。等客户结束连接后，用串口监视器和cardputer同时打印接收的内容。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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#include <Ethernet.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xE1, 0xF2, 0xE3 };
IPAddress ip(192, 168, 50, 188);
IPAddress gateway(192, 168, 50, 1);
IPAddress myDns(8, 8, 8, 8);
IPAddress subnet(255, 255, 255, 0);

IPAddress setNet() {
  Serial.println("Ethernet Begin");
  Ethernet.init(17);
  // DHCP
  // Ethernet.begin(mac);
  // 静态IP设置
  Ethernet.begin(mac, ip, myDns, gateway, subnet);

  // 打印INFO
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());
  Serial.print("My subnet: ");
  Serial.println(Ethernet.subnetMask());
  Serial.print("My DNS address: ");
  Serial.println(Ethernet.dnsServerIP());
  Serial.print("My GateWay address: ");
  Serial.println(Ethernet.gatewayIP());
  Serial.print("My Mac address: ");
  byte macBuffer[6];
  Ethernet.MACAddress(macBuffer);
  for (byte octet = 0; octet < 6; octet++) {
    Serial.print(macBuffer[octet], HEX);
    if (octet < 5) {
      Serial.print('-');
    }
  }
  Serial.println("");

  return Ethernet.localIP();
}


EthernetServer server(5000);

String server_loop() {
  String msg;
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        msg += String(c);
      }
    }
  }
  return msg;
}



void setup() {
  Serial.begin(115200);
  Serial1.begin(115200);
  while (!Serial)
    ;
  setNet();
  server.begin();
}

void loop() {
  String msg = server_loop();
  if (msg != "") {
    Serial.println(msg);
    Serial1.println(msg);
  }
}

编译代码时会有一定概率报错Compilation error: cannot declare variable 'server' to be of abstract type 'EthernetServer'。如果出现这种情况，需要修改一下两个库文件：

Ethernet.h

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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//	virtual void begin();
	virtual void begin(uint16_t port=0);

EthernetServer.cpp

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//void EthernetServer::begin()
void EthernetServer::begin(uint16_t port)

 

电脑上发送tcp访问请求我使用的是python，用python写了个非常简单的代码，发送Hello!!!后关闭连接。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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import socket

msg = "Hello!!!"

ip_addr=("192.168.50.188",5000)
client=socket.socket() 
client.connect(ip_addr) 
client.send(bytes(msg,"utf-8"))
client.close()

运行一下python代码，就可以看到效果。

打开wireshark，也可以抓到我们发送过去的信息。

 

进阶任务：从NTP服务器(注意数据交互格式的解析)同步时间，获取时间送显示屏(串口)显示。 

通过NTP服务器获取时间的方式是基于UDP的，UDP是只管发送，不管对方收不收的到，因此单次请求可能会失败，所以需要设定一定的重试次数。每次重试之间需要有间隔，以免被对方服务器当作网络攻击直接屏蔽。代码中先把请求的UDP报文写好，再用该方法像服务器发送请求。成功获取到时间后，发送到串口和屏幕。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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#include <Ethernet.h>
#include <EthernetUdp.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xE1, 0xF2, 0xE3 };
IPAddress ip(192, 168, 50, 188);
IPAddress gateway(192, 168, 50, 1);
IPAddress myDns(8, 8, 8, 8);
IPAddress subnet(255, 255, 255, 0);

IPAddress setNet() {
  Serial.println("Ethernet Begin");
  Ethernet.init(17);
  // DHCP
  // Ethernet.begin(mac);
  // 静态IP设置
  Ethernet.begin(mac, ip, myDns, gateway, subnet);

  // 打印INFO
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());
  Serial.print("My subnet: ");
  Serial.println(Ethernet.subnetMask());
  Serial.print("My DNS address: ");
  Serial.println(Ethernet.dnsServerIP());
  Serial.print("My GateWay address: ");
  Serial.println(Ethernet.gatewayIP());
  Serial.print("My Mac address: ");
  byte macBuffer[6];
  Ethernet.MACAddress(macBuffer);
  for (byte octet = 0; octet < 6; octet++) {
    Serial.print(macBuffer[octet], HEX);
    if (octet < 5) {
      Serial.print('-');
    }
  }
  Serial.println("");

  return Ethernet.localIP();
}

EthernetUDP Udp;
const uint8_t NTP_PACKET_SIZE = 48;
byte packetBuffer[NTP_PACKET_SIZE];
char bjtime[256];
void sendNTPpacket(const char *address)
{
  // set all bytes in the buffer to 0
  memset(packetBuffer, 0, NTP_PACKET_SIZE);
  // Initialize values needed to form NTP request
  // (see URL above for details on the packets)
  packetBuffer[0] = 0b11100011; // LI, Version, Mode
  packetBuffer[1] = 0;          // Stratum, or type of clock
  packetBuffer[2] = 6;          // Polling Interval
  packetBuffer[3] = 0xEC;       // Peer Clock Precision
  // 8 bytes of zero for Root Delay & Root Dispersion
  packetBuffer[12] = 49;
  packetBuffer[13] = 0x4E;
  packetBuffer[14] = 49;
  packetBuffer[15] = 52;

  // all NTP fields have been given values, now
  // you can send a packet requesting a timestamp:
  Udp.beginPacket(address, 123); // NTP requests are to port 123
  Udp.write(packetBuffer, NTP_PACKET_SIZE);
  Udp.endPacket();
}

void ntp()
{
  while (true)
  {
    sendNTPpacket("time.nist.gov"); // send an NTP packet to a time server
    // wait to see if a reply is available
    delay(1000);
    if (Udp.parsePacket())
    {
      // We've received a packet, read the data from it
      Udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer

      // the timestamp starts at byte 40 of the received packet and is four bytes,
      // or two words, long. First, extract the two words:

      unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
      unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
      // combine the four bytes (two words) into a long integer
      // this is NTP time (seconds since Jan 1 1900):
      unsigned long secsSince1900 = highWord << 16 | lowWord;
      Serial.print("Seconds since Jan 1 1900 = ");
      Serial.println(secsSince1900);

      // now convert NTP time into everyday time:
      Serial.print("Unix time = ");
      // Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
      const unsigned long seventyYears = 2208988800UL;
      // subtract seventy years:
      unsigned long epoch = secsSince1900 - seventyYears;
      // print Unix time:
      Serial.println(epoch);

      // print the hour, minute and second:
      sprintf(bjtime, "%d : %d : %d",
              (epoch % 86400L) / 3600 + 8,
              (epoch % 3600) / 60,
              epoch % 60);
      return;
    }
    // wait 3 seconds before asking for the time again
    Serial.println("Retry in 3 seconds...");
    delay(3000);
  }
}

void setup() {
  Serial.begin(115200);
  Serial1.begin(115200);
  while (!Serial)
    ;
  setNet();
  Udp.begin(8888);
  ntp();
  Serial.println(bjtime);
  Serial1.println(bjtime);
}

void loop() {

}

 终极任务二：使用外部存储器，组建简易FTP文件服务器，并能正常上传下载文件。

这个任务我本来打算继续在arduino平台完成的，虽然ftp部分没有很大的问题，但是储存这块出了问题。不管是littlefs，还是SD库，我尝试了各种主流的sd卡驱动库，都无法在修改默认SPI的情况下成功读取并写入SD卡。因此只好转战micropython，因为micropython可以直接在内存中虚拟出一块区域作为储存使用。

github中8266的uftp代码可以直接使用，唯一需要更改的一个小地方，就是将我们的IP地址传入即可。

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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import socket
import network
import uos
import gc
from time import localtime
from machine import Pin,SPI
import time


spi=SPI(0,2_000_000, mosi=Pin(19),miso=Pin(16),sck=Pin(18))
nic = network.WIZNET5K(spi,Pin(17),Pin(20)) #spi,cs,reset pin
nic.active(True)#network active
nic.ifconfig(('192.168.50.188','255.255.255.0','192.168.50.1','8.8.8.8'))#Set static network address information
while not nic.isconnected():
    time.sleep(1)
    print(nic.regs())#Print register information
    
#Print network address information
print("IP Address:",nic.ifconfig()[0])
print("Subnet Mask:",nic.ifconfig()[1])
print("Gateway:",nic.ifconfig()[2])
print("DNS:",nic.ifconfig()[3])


month_name = ["", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]

def send_list_data(path, dataclient, full):
    try: # whether path is a directory name
        for fname in uos.listdir(path):
            dataclient.sendall(make_description(path, fname, full))
    except: # path may be a file name or pattern
        pattern = path.split("/")[-1]
        path = path[:-(len(pattern) + 1)]
        if path == "": path = "/"
        for fname in uos.listdir(path):
            if fncmp(fname, pattern) == True:
                dataclient.sendall(make_description(path, fname, full))
                
def make_description(path, fname, full):
    if full:
        stat = uos.stat(get_absolute_path(path,fname))
        file_permissions = "drwxr-xr-x" if (stat[0] & 0o170000 == 0o040000) else "-rw-r--r--"
        file_size = stat[6]
        tm = localtime(stat[7])
        if tm[0] != localtime()[0]:
            description = "{}    1 owner group {:>10} {} {:2} {:>5} {}\r\n".format(
                file_permissions, file_size, month_name[tm[1]], tm[2], tm[0], fname)
        else:
            description = "{}    1 owner group {:>10} {} {:2} {:02}:{:02} {}\r\n".format(
                file_permissions, file_size, month_name[tm[1]], tm[2], tm[3], tm[4], fname)
    else:
        description = fname + "\r\n"
    return description
    
def send_file_data(path, dataclient):
    with open(path, "r") as file:
        chunk = file.read(512)
        while len(chunk) > 0:
            dataclient.sendall(chunk)
            chunk = file.read(512)

def save_file_data(path, dataclient, mode):
    with open(path, mode) as file:
        chunk = dataclient.read(512)
        while len(chunk) > 0:
            file.write(chunk)
            chunk = dataclient.read(512)

def get_absolute_path(cwd, payload):
    # Just a few special cases "..", "." and ""
    # If payload start's with /, set cwd to / 
    # and consider the remainder a relative path
    if payload.startswith('/'):
        cwd = "/"
    for token in payload.split("/"):
        if token == '..':
            if cwd != '/':
                cwd = '/'.join(cwd.split('/')[:-1])
                if cwd == '': 
                    cwd = '/'
        elif token != '.' and token != '':
            if cwd == '/':
                cwd += token
            else:
                cwd = cwd + '/' + token
    return cwd

# compare fname against pattern. Pattern may contain
# wildcards ? and *.
def fncmp(fname, pattern):
    pi = 0
    si = 0
    while pi < len(pattern) and si < len(fname):
        if (fname[si] == pattern[pi]) or (pattern[pi] == '?'):
            si += 1
            pi += 1
        else:
            if pattern[pi] == '*': # recurse
                if (pi + 1) == len(pattern):
                    return True
                while si < len(fname):
                    if fncmp(fname[si:], pattern[pi+1:]) == True:
                        return True
                    else:
                        si += 1
                return False
            else:
                return False
    if pi == len(pattern.rstrip("*"))  and si == len(fname):
        return True
    else:
        return False
    
def ftpserver():
    DATA_PORT = 13333
    ftpsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    datasocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    ftpsocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    datasocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    ftpsocket.bind(socket.getaddrinfo("0.0.0.0", 21)[0][4])
    datasocket.bind(socket.getaddrinfo("0.0.0.0", DATA_PORT)[0][4])

    ftpsocket.listen(1)
    datasocket.listen(1)
    datasocket.settimeout(10)

    msg_250_OK = '250 OK\r\n'
    msg_550_fail = '550 Failed\r\n'
    try:
        dataclient = None
        fromname = None
        while True:
            cl, remote_addr = ftpsocket.accept()
            cl.settimeout(300)
            cwd = '/'
            try:
                # print("FTP connection from:", remote_addr)
                cl.sendall("220 Hello, this is the ESP8266.\r\n")
                while True:
                    gc.collect()
                    data = cl.readline().decode("utf-8").rstrip("\r\n")
                    if len(data) <= 0:
                        print("Client disappeared")
                        break
                    
                    command = data.split(" ")[0].upper()
                    payload = data[len(command):].lstrip()

                    path = get_absolute_path(cwd, payload)
                    
                    print("Command={}, Payload={}, Path={}".format(command, payload, path))
                    
                    if command == "USER":
                        cl.sendall("230 Logged in.\r\n")
                    elif command == "SYST":
                        cl.sendall("215 UNIX Type: L8\r\n")
                    elif command == "NOOP":
                        cl.sendall("200 OK\r\n")
                    elif command == "FEAT":
                        cl.sendall("211 no-features\r\n")
                    elif command == "PWD":
                        cl.sendall('257 "{}"\r\n'.format(cwd))
                    elif command == "CWD":
                        try:
                            files = uos.listdir(path)
                            cwd = path
                            cl.sendall(msg_250_OK)
                        except:
                            cl.sendall(msg_550_fail)
                    elif command == "CDUP":
                        cwd = get_absolute_path(cwd, "..")
                        cl.sendall(msg_250_OK)
                    elif command == "TYPE":
                        # probably should switch between binary and not
                        cl.sendall('200 Transfer mode set\r\n')
                    elif command == "SIZE":
                        try:
                            size = uos.stat(path)[6]
                            cl.sendall('213 {}\r\n'.format(size))
                        except:
                            cl.sendall(msg_550_fail)
                    elif command == "QUIT":
                        cl.sendall('221 Bye.\r\n')
                        break
                    elif command == "PASV":
                        addr = nic.ifconfig()[0]
                        cl.sendall('227 Entering Passive Mode ({},{},{}).\r\n'.format(
                            addr.replace('.',','), DATA_PORT>>8, DATA_PORT%256))
                        dataclient, data_addr = datasocket.accept()
                        # print("FTP Data connection from:", data_addr)
                    elif command == "LIST" or command == "NLST":
                        if not payload.startswith("-"):
                            place = path
                        else: 
                            place = cwd
                        try:
                            send_list_data(place, dataclient, command == "LIST" or payload == "-l")
                            cl.sendall("150 Here comes the directory listing.\r\n")
                            cl.sendall("226 Listed.\r\n")
                        except:
                            cl.sendall(msg_550_fail)
                        if dataclient is not None:
                            dataclient.close()
                            dataclient = None
                    elif command == "RETR":
                        try:
                            send_file_data(path, dataclient)
                            cl.sendall("150 Opening data connection.\r\n")
                            cl.sendall("226 Transfer complete.\r\n")
                        except:
                            cl.sendall(msg_550_fail)
                        if dataclient is not None:
                            dataclient.close()
                            dataclient = None
                    elif command == "STOR":
                        try:
                            cl.sendall("150 Ok to send data.\r\n")
                            save_file_data(path, dataclient, "w")
                            cl.sendall("226 Transfer complete.\r\n")
                        except:
                            cl.sendall(msg_550_fail)
                        if dataclient is not None:
                            dataclient.close()
                            dataclient = None
                    elif command == "APPE":
                        try:
                            cl.sendall("150 Ok to send data.\r\n")
                            save_file_data(path, dataclient, "a")
                            cl.sendall("226 Transfer complete.\r\n")
                        except:
                            cl.sendall(msg_550_fail)
                        if dataclient is not None:
                            dataclient.close()
                            dataclient = None
                    elif command == "DELE":
                        try:
                            uos.remove(path)
                            cl.sendall(msg_250_OK)
                        except:
                            cl.sendall(msg_550_fail)
                    elif command == "RMD":
                        try:
                            uos.rmdir(path)
                            cl.sendall(msg_250_OK)
                        except:
                            cl.sendall(msg_550_fail)
                    elif command == "MKD":
                        try:
                            uos.mkdir(path)
                            cl.sendall(msg_250_OK)
                        except:
                            cl.sendall(msg_550_fail)
                    elif command == "RNFR":
                            fromname = path
                            cl.sendall("350 Rename from\r\n")
                    elif command == "RNTO":
                            if fromname is not None: 
                                try:
                                    uos.rename(fromname, path)
                                    cl.sendall(msg_250_OK)
                                except:
                                    cl.sendall(msg_550_fail)
                            else:
                                cl.sendall(msg_550_fail)
                            fromname = None
                    else:
                        cl.sendall("502 Unsupported command.\r\n")
                        # print("Unsupported command {} with payload {}".format(command, payload))
            except Exception as err:
                print(err)  

            finally:          
                cl.close()
                cl = None
    finally:
        datasocket.close()
        ftpsocket.close()
        if dataclient is not None:
            dataclient.close()

ftpserver()

 

 

项目视频


项目源码

https://download.eeworld.com.cn/detail/%E6%B1%9F%E5%8D%8E210/631263

 

心得
通过followme活动让我学到了很多，在活动中可以尝试很多之前没有尝试过的平台，希望活动越办越好。

Jacktang

cardputer之前，要安装一下对应的库，谢谢提醒哈