I use #include <NativeEthernet.h>
I am sure, client connection handling is correct (for one server): I see "new client" and "client disconnected" in pairs, one server runs forever fine.
(both servers send HTTP response with "Refresh: 5", so, auto-refreshing in WebBrowser)
I get this error:
StateErr: -28
The entire project is here:
https://github.com/tjaekel/Teesny_4_1
I tried to use a Mutex (lock) - it does not solve the problem!
The code for the ETH servers (as HTTPD daemons):
Code:
////#include <SPI.h>
#include <NativeEthernet.h>
#include <TeensyThreads.h>
void thread_HTTPD(void);
void thread_NETCMD(void);
Threads::Mutex serverLock;
// 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, 196);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
EthernetServer serverNETCMD(8080);
void HTTPD_setup(void) {
// 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
#if 0
// 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
}
#endif
Serial.println("Ethernet WebServer Example");
// 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());
//run as a RTOS thread
threads.addThread(thread_HTTPD);
threads.addThread(thread_NETCMD);
}
uint32_t HTTPD_GetIPAddress(void) {
return Ethernet.localIP();
}
void thread_HTTPD(void) {
static uint32_t cnt = 0;
while(1) {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
serverLock.lock();
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = false;
while (client.connected()) {
if (client.available()) {
char c = client.read();
#if 0
//this prints all received characters on Serial
Serial.write(c);
#endif
// 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>");
// avoid to request all the time a favicon - otherwise, we get always two requests!
client.println("<head><link rel=\"icon\" href=\"data:,\"></head><body>");
#if 0
// 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 />");
}
#else
client.print("<h2>Welcome on Teensy: ");
client.print(cnt);
Serial.print("XXXX: "); Serial.println(cnt);
cnt++;
client.println("</h2>");
#endif
client.println("</body></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);
threads.delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
serverLock.unlock();
}
threads.delay(1);
threads.yield();
}
}
void thread_NETCMD(void) {
static uint32_t cnt = 0;
while(1) {
// listen for incoming clients
EthernetClient client = serverNETCMD.available();
if (client) {
serverLock.lock();
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = false;
while (client.connected()) {
if (client.available()) {
char c = client.read();
#if 0
//this prints all received characters on Serial
Serial.write(c);
#endif
// 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>");
// avoid to request all the time a favicon - otherwise, we get always two requests!
client.println("<head><link rel=\"icon\" href=\"data:,\"></head><body>");
#if 0
// 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 />");
}
#else
client.print("<h2>Teensy CMD: ");
client.print(cnt);
Serial.print("XXXX: "); Serial.println(cnt);
cnt++;
client.println("</h2>");
#endif
client.println("</body></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);
threads.delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
serverLock.unlock();
}
threads.delay(1);
threads.yield();
}
}
My impression: two parallel servers are not supported by the "NativeEthernet" LIB
(I do not see that I have QNEthernet LIB installed - I would like use this instead)
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Originally Posted by tjaekel
