asp.net读取arduino上温度传感器数据
我手上有arduino 2560 和 一个w5100的网络模块，我想从一个asp.net的网站读取arduino上温度传感器数据，各位能否指点一二？我只熟悉asp.net,对PHP没有太多了解。 如果只是在asp.net页面上显示温度的话，可以把Arduino2560和W5100写成一个WebServer，读取温度值并输出一个网页。用asp.net写的页面里嵌入这个2560的页面，但一定要把页面组织好，要不不好看。只是一个建议，效果不一定好。如果要是还要把数据读取并写入数据库，建议用Arduino2560和W5100写成一个WebClient，通过url调用把温度定时写入数据库，然后asp.net再从数据库里取温度值。 #include <SPI.h>#include <Ethernet.h>
#define APIKEY "YOUR API KEY GOES HERE" // replace your pachube api key here
#define FEEDID 00000 // replace your feed ID
#define USERAGENT "My Project" // user agent is the project name
// assign a MAC address for the ethernet controller.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
// fill in your address here:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
// fill in an available IP address on your network here,
// for manual configuration:
IPAddress ip(192,168,1,254);
// initialize the library instance:
EthernetClient client;
// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
IPAddress server(192,168,1,5);
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
boolean lastConnected = false; // state of the connection last time through the main loop
const unsigned long postingInterval = 10*1000; //delay between updates to Pachube.com
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// DHCP failed, so use a fixed IP address:
Ethernet.begin(mac, ip);
}
}
void loop() {
// read the analog sensor:
int sensorReading = analogRead(A0);
// if there's incoming data from the net connection.
// send it out the serial port.This is for debugging
// purposes only:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if there's no net connection, but there was one last time
// through the loop, then stop the client:
if (!client.connected() && lastConnected) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
}
// if you're not connected, and ten seconds have passed since
// your last connection, then connect again and send data:
if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
sendData(sensorReading);
}
// store the state of the connection for next time through
// the loop:
lastConnected = client.connected();
}
// this method makes a HTTP connection to the server:
void sendData(int thisData) {
// if there's a successful connection:
if (client.connect(server, 80)) {
// if there's a successful connection:
Serial.println("connecting...");
// send the HTTP PUT request:
client.print("POST /iems/default.aspx?");
client.print("temp_sensor=");
client.print(thisData);
client.println(" HTTP/1.1");
client.println("Host: 192.168.1.5");
client.print("Content-Length: ");
client.println(thisData.length());
// last pieces of the HTTP PUT request:
client.println("Content-Type: application/x-www-form-urlencoded");
client.println("Connection: close");
client.println();
// here's the actual content of the PUT request:
client.println(thisData);
}
else {
// if you couldn't make a connection:
Serial.println("connection failed");
Serial.println();
Serial.println("disconnecting.");
client.stop();
}
// note the time that the connection was made or attempted:
lastConnectionTime = millis();
}
// This method calculates the number of digits in the
// sensor reading.Since each digit of the ASCII decimal
// representation is a byte, the number of digits equals
// the number of bytes:
int getLength(int someValue) {
// there's at least one byte:
int digits = 1;
// continually divide the value by ten,
// adding one to the digit count for each
// time you divide, until you're at 0:
int dividend = someValue /10;
while (dividend > 0) {
dividend = dividend /10;
digits++;
}
// return the number of digits:
return digits;
}
串口监视一直提示：connection failed disconnecting
能帮忙分析一下原因吗？192.168.1.5是一个asp.net网站，获取的数据上传asp.net网站的页面显示 会asp.net，想必也会C#或者VB.net了，你可以这样的：
1.写一个窗口程序，通过串口读取arduino的温度值，然后写入一个xml文件
2.做asp.net网站，读取前面的xml文件，解析后写入页面。。。
可以通过arduino的Ethernet模块先将数据传送到Mysql数据库吗？我不想数据走串口，直接走网络传送，有解决的办法吗？ 有同样的问题求解，php一点不懂 有同样的问题求解，php一点不懂可以通过arduino的Ethernet模块先将数据传送到Mysql数据库吗？我不想数据走串口，直接走网络传送，有解决的办法吗？
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