Dear Forum,
I'm new into Teensy. I did some Arduino Projects, also with Ethernet, mostly with the WIZ5100 and the standard Ethernet library from the Aruino IDE. For a new project I needed some more "power" and I decided to use a Teensy 4.0 for this. Works very well, the only issue I have now is the Ethernet connection. I used a module with a WIZ5100 chip which worked very well with a standard Arduino DUE and tested this with the Webserver and Webclient examples. Both worked well, so I'm sure the hardware should not be damaged, I also use a second module, the same.
Now I'm not able to get this WIZ5100 module running with the Teensy 4.0. Ok, so I bought a newer module with the WIZ812 chip with the same result, I can't get it running. Has anybody any hint what I'm doing wrong? As written above, the code and also the modules seems to work, just in combination with the Teensy 4.0 I don't have any success.
Output on the serial console:
Ethernet WebServer Example
server is at 192.168.0.0
That’s all… I don’t even understand, why the IP is not compete?
The Webclient example can't connect to google.com, the same example with the DUE worked fine.
Thank you very much for any help.
Hardware:
Teensy 4.0
https://www.digikey.com/en/products/detail/sparkfun-electronics/DEV-15583/10384551
WIZ812MJ
https://www.digikey.com/en/products/detail/wiznet/WIZ812MJ/3829654
Wiring is done with wire wrap wires:
Teensy -> WIZ812MJ
GND -> J1,11 (GND)
3.3V -> J1,12 (3V3D)
10 (CS) -> J2,4 (/SCS)
11 (MOSI) -> J1,1 (MOSI)
12 (MISO) -> J1,2 (MISO)
13 (SCK) -> J2,3 (SCLK)
9 -> J2,2 (/RESET)
I connected the Reset Pin of the WIZ812 Board to pin 9 of the Teensy.
Code:
I'm new into Teensy. I did some Arduino Projects, also with Ethernet, mostly with the WIZ5100 and the standard Ethernet library from the Aruino IDE. For a new project I needed some more "power" and I decided to use a Teensy 4.0 for this. Works very well, the only issue I have now is the Ethernet connection. I used a module with a WIZ5100 chip which worked very well with a standard Arduino DUE and tested this with the Webserver and Webclient examples. Both worked well, so I'm sure the hardware should not be damaged, I also use a second module, the same.
Now I'm not able to get this WIZ5100 module running with the Teensy 4.0. Ok, so I bought a newer module with the WIZ812 chip with the same result, I can't get it running. Has anybody any hint what I'm doing wrong? As written above, the code and also the modules seems to work, just in combination with the Teensy 4.0 I don't have any success.
Output on the serial console:
Ethernet WebServer Example
server is at 192.168.0.0
That’s all… I don’t even understand, why the IP is not compete?
The Webclient example can't connect to google.com, the same example with the DUE worked fine.
Thank you very much for any help.
Hardware:
Teensy 4.0
https://www.digikey.com/en/products/detail/sparkfun-electronics/DEV-15583/10384551
WIZ812MJ
https://www.digikey.com/en/products/detail/wiznet/WIZ812MJ/3829654
Wiring is done with wire wrap wires:
Teensy -> WIZ812MJ
GND -> J1,11 (GND)
3.3V -> J1,12 (3V3D)
10 (CS) -> J2,4 (/SCS)
11 (MOSI) -> J1,1 (MOSI)
12 (MISO) -> J1,2 (MISO)
13 (SCK) -> J2,3 (SCLK)
9 -> J2,2 (/RESET)
I connected the Reset Pin of the WIZ812 Board to pin 9 of the Teensy.
Code:
Code:
/*
Web Server
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
modified 02 Sept 2015
by Arturo Guadalupi
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 0, 37);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
//Ethernet.init(10); // Most Arduino shields
//Ethernet.init(5); // MKR ETH shield
//Ethernet.init(0); // Teensy 2.0
//Ethernet.init(20); // Teensy++ 2.0
//Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet
//Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("Ethernet WebServer Example");
pinMode(9, OUTPUT);
digitalWrite(9, LOW);
delay(100);
digitalWrite(9, HIGH);
delay(100);
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}
// start the server
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
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>");
// 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");
}
}
Last edited: