本帖最后由 ilychw 于 2019-3-26 19:36 编辑

本人用W5500来上传温湿度数据到服务器，刚开始是可以上传数据的，但不定期(有时几个小时，有时一天或两天)就会出现用Ethernet.localIP()获取到的IP显示是0.0.0.0，然后上传不了数据，或者IP显示是正常的的，也可以PING通这个IP，但就是上传不了数据，重新初始化也是不行，LCD显示屏会出现花屏等现象。以为计算机的USB口电压不够，就用了手机的充电插头，也是一样的情况。真的没办法了。[mw_shl_code=arduino,true]

#include

#include

#include

#include

#include

#include

#include                      //定时器库的头文件

#define dht11pin 8                        //DHT11的DATA脚

#define W5500CS 10                        //W5500的CS脚

bool    showtime = false;                 //是否显示时间

LiquidCrystal lcd(4, 5, A0, A1, A2, A3);  //对应LCD1602的RS, E, D4, D5, D6, D7

DS3231  Clock;                            //DS3231的SDA接A4，SCL接A5

bool    h12, PM, Century = false;

int     p = 6;                            //LCD1602的V0脚

dht11   DHT11;

char    inString[27];

int     stringPos = 0;

boolean startRead = false;                //是否开始读取服务器返回的数据

float   temp = 0;                         //保存温度

float   hum = 0;                          //保存湿度

float   jg = 20;                           //发送内容的间隔

String  sp = " ";

byte    mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};

IPAddress ip(192, 168, 0, 109);

IPAddress myDns(192, 168, 0, 1);

IPAddress gateway(192, 168, 0, 1);

IPAddress subnet(255, 255, 255, 0);

char      server[] = "192.168.0.2";         //服务器地址

EthernetClient client;

void(* resetFunc)(void) = 0;              //制造重启命令

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

Wire.begin();

pinMode(p, OUTPUT);

analogWrite(p, 110);

lcd.begin(16, 2);

lcd.clear();

Ethernet.init(W5500CS);               //初始化W5500的CS脚对应的D10

Ethernet.begin(mac, ip, myDns, gateway, subnet);  //W5500的CS接D10，SI接D11，SO接D12，SCK接D13

delay(1000);

setDateTime();

getTempHum();

showData(temp, hum);

sendData();

//client.flush();

MsTimer2::set(jg * 1000 * 60, sendData);    //中断设置函数，每jg分钟进入一次中断

MsTimer2::start();                          //开始计时

}

void loop() {

// put your main code here, to run repeatedly:

if(Ethernet.localIP()[0] == '0'){

Ethernet.init(W5500CS);

Ethernet.begin(mac, ip, myDns, gateway, subnet);

delay(500);

}

getTempHum();

showData(temp, hum);

}

void setDateTime(){

Serial.println("connecting...");

if(client.connect(server, 80)){

Serial.println("connected");

client.println("GET /tempHum/getTime.aspx HTTP/1.0");

client.println();

}

else{

Serial.println("connection failed");

}

Serial.println(Ethernet.localIP());

lcd.setCursor(0, 0);

lcd.print(Ethernet.localIP());

lcd.setCursor(0, 1);

lcd.print("Initialization.");

Serial.println(readPage());

/*for(int i = 3; i < readPage().length() - 4; i ++){

Serial.print(readPage());

}*/

Serial.println();

String year = (String)readPage()[3] + (String)readPage()[4] + (String)readPage()[5] + (String)readPage()[6];

String month = (String)readPage()[8] + (String)readPage()[9];

String day = ((String)readPage()[11] + (String)readPage()[12]);

String hour = ((String)readPage()[14] + (String)readPage()[15]);

String minute = ((String)readPage()[17] + (String)readPage()[18]);

String second = ((String)readPage()[20] + (String)readPage()[21]);

Clock.setYear(year.toInt() - 2000);

Clock.setMonth(month.toInt());

Clock.setDate(day.toInt());

Clock.setHour(hour.toInt());

Clock.setMinute(minute.toInt());

Clock.setSecond(second.toInt());

client.stop();

client.flush();

}

String readPage(){

while(true){

if(client.available()){

char c = client.read();

if(c == 'YYYY-MM-DD HH:mm:SS

startRead = true;                 //可以读取数据

}

if(startRead){

inString[stringPos] = c;          //将读取到的字节保存

stringPos++;                      //记数加1

}

}

else{

return inString;

}

}

}

void getTempHum(){

int chk = DHT11.read(dht11pin);         //读取DHT11的数据

temp = (float)DHT11.temperature;        //保存读取的温度

hum = (float)DHT11.humidity;            //保存读取的湿度

}

void showData(float temp, float hum){

int hour = Clock.getHour(h12, PM);      //以24小时制显示小时

int minute = Clock.getMinute();

int second = Clock.getSecond();

int n = second % 10;

int m = second / 10;

if(showtime)

{

lcd.setCursor(0, 0);

lcd.print("20");

lcd.print(Clock.getYear());

lcd.print("-");

//if(Clock.getMonth(Century) < 10){

//  print.print("0");

//}

lcd.print(Clock.getMonth(Century));

lcd.print("-");

lcd.print(Clock.getDate());

if((Clock.getMonth(Century) < 10) && (Clock.getDate() < 10)){

sp = " ";

}

else if((Clock.getMonth(Century) > 9) && (Clock.getDate() > 9)){

sp = "  ";

}

else{

sp = "   ";

}

lcd.print(sp);

lcd.setCursor(11, 0);

lcd.print(temp);

lcd.setCursor(15, 0);

lcd.print("C");

lcd.setCursor(0, 1);

lcd.print(Clock.getHour(h12, PM));

lcd.print(":");

if(Clock.getMinute() < 10){

lcd.print("0");

}

lcd.print(Clock.getMinute());

lcd.print(":");

if(Clock.getSecond() < 10){

lcd.print("0");

}

lcd.print(Clock.getSecond());

lcd.print("   ");

lcd.setCursor(11, 1);

lcd.print(hum);

lcd.setCursor(15, 1);

lcd.print("%");

}

else{

lcd.setCursor(0, 0);

lcd.print(Ethernet.localIP());

lcd.print("            ");

lcd.setCursor(0, 1);

lcd.print(temp);

lcd.setCursor(4, 1);

lcd.print("C");

lcd.print("      ");

lcd.setCursor(11, 1);

lcd.print(hum);

lcd.setCursor(15, 1);

lcd.print("%");

}

if((m % 2 == 0) && n == 0){             //秒数是否被2整除

showtime = false;

}

else if((m % 2 != 0) && n == 0){

showtime = true;

}

if((minute == 0) && (second == 0)){

setDateTime();

delay(1000);

}

}

void sendData(){

String url = "GET /tempHum/Add.aspx?ip=";  //拼接url

url.concat(Ethernet.localIP()[0]);

url.concat(".");

url.concat(Ethernet.localIP()[1]);

url.concat(".");

url.concat(Ethernet.localIP()[2]);

url.concat(".");

url.concat(Ethernet.localIP()[3]);

url.concat("&mac=");

String strMac = String(mac[0], HEX);

strMac.concat(String(mac[1], HEX));

strMac.concat("-");

strMac.concat(String(mac[2], HEX));

strMac.concat(String(mac[3], HEX));

strMac.concat("-");

strMac.concat(String(mac[4], HEX));

strMac.concat(String(mac[5], HEX));

url.concat(strMac);

url.concat("&temp=");

url.concat(temp);

url.concat("&hum=");

url.concat(hum);

url.concat(" HTTP/1.0");

if(client.connect(server, 80)){

Serial.println(url);

client.println(url);

client.println();

}

else{

Serial.println("connection failed");

Ethernet.init(W5500CS);

delay(1000);

}

client.stop();

client.flush();

}

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