[nRF52 xBee EVM]보드를 이용하여 SPI 테스트를 하기위해 이더넷 모듈은 W5500 EVM보드를 이용하여 테스트 해 보았다.
W5500 EVM 모듈의 CS핀은 IO27에 연결되어 있다.
이더넷 모듈의 라이브러리는 Ethernet2를 사용하였다.
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print("server is at ");
// start the Ethernet connection and the server:
Ethernet.w5500_cspin = 27;
Ethernet.begin(mac, ip);
server.begin();
Serial.println(Ethernet.localIP());
}
이더넷 웹서버를 이용해서 [nRF52 xBee EVM] Arduino 테스트 - 내장 온도 측정하기를 이용하여 웹페이지에 온도값을 출력 하는 예제를 작성해 보았다.
void loop() {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html><center>");
client.print("<h1>");
client.print("nRF52x Temperature : ");
int sensorReading = get_temperature();
client.print(sensorReading);
client.println("<br /></center></h1>");
/*
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(analogChannel);
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(sensorReading);
client.println("<br />");
}
*/
client.println("</html>");
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
nRF52와 W5500 모듈을 이용하여 웹서버 구현 예제
반응형
