MQTT ethernet gateway Works great for 3+ hours then stops
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Have had this problem. And I am pretty sure it's a power issue. Running 5v lines on a 3.3v. Works flawless when I pipe the ethernet lines through a 74LVC245 or when I replaced my "base station" with a Uno+Shield.
So try a level shifter or try running it with a 3.3v(3.7v) power supply to test ?(Remember to set the Arduino to 8Mhz so it's not overclocked)
/Mads
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Have had this problem. And I am pretty sure it's a power issue. Running 5v lines on a 3.3v. Works flawless when I pipe the ethernet lines through a 74LVC245 or when I replaced my "base station" with a Uno+Shield.
So try a level shifter or try running it with a 3.3v(3.7v) power supply to test ?(Remember to set the Arduino to 8Mhz so it's not overclocked)
/Mads
@Magiske said:
Have had this problem. And I am pretty sure it's a power issue. Running 5v lines on a 3.3v. Works flawless when I pipe the ethernet lines through a 74LVC245 or when I replaced my "base station" with a Uno+Shield.
So try a level shifter or try running it with a 3.3v(3.7v) power supply to test ?(Remember to set the Arduino to 8Mhz so it's not overclocked)
/Mads
Interesting... I am running the whole circuit at 3.3Volts from a regulator (LE33CZ-TR) and I have a capacitor across the power lines as well. But it's clocked at 16Mhz..
I don't have an 8Mhz crystal at hand to test with. I guess I could try the internal clock.
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Just rechecking the specs, and the ENC28J60 should be 5v tolerant ? I ran my at 8mhz using the internal clock.
So if it was the levelshift or 8mhz that "fixed" mine is a good question.
Have to add that the Uno+Shield I am using now for the gateway is a W5100 simply because I ordered the W5100 shield when I started having the issues.
(And this have also been running flawless from day one!) -
Sounds like the same issue I had.. Some time it would run for a day other times it would stop responding after an hour or so.
After reboot it was back right away. So it looks like the ENC28J60 chip is crashing.
For me fideling with it and droppinglines to 3.3v running at 8mhz worked(And working was having it up and running for at least 3-4 days compared to "normal"). But I remember seeing others having ENC28J60 issues to ?? Maybe you should check to see if you are running latest ENC28J60 Lib ?? -
I've been doing a great deal of research on this and I think I might have found the issue.
It seems that the radio is very sensitive to power changes... In my original circuit I had the Arduino and the radio running from the 3.3v line. Since I moved it to the 5Volts line the Gateway has stayed up for over a day now.
So to sum up. Everything is now powered by 5Volts except the radio which is 3.3v from the LE33CZ-TR regulator. I have it powered direct from a USB power adapter as well rather than the Uno I did have.
Once I have etched and tested I will post the circuit and PCB layout.
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I was still seeing it stop working. However after further diagnostics it seems the issue lies with the ethernet side of things, the Arduino and Radio still continue to function.
I tried to use the Arduino to reboot it's self, which didn't work, but also would not have rebooted the ethernet modules and thus would not have solved this.
I've ended up building a 555 timer circuit which is triggered from the Arduino (Digital pin 3), the time fires and triggers a relay to remove power from everything for 2 seconds. Thus we end up with a complete reboot.
Here's my circuit diagram, take 5Volts directly and then PWR is fed into my previous circuit that way when the relay clicks over all power to the Arduino and ethernet is removed.
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Well it's very simple to detect if the network has gone away.
In the processEthernetMessage() function, it checks
if (client) {
if there's a client connection then the network must be working. If not then either the network has stopped or nothing is connected. Well OpenHAB always maintains a connection.
So I've just added the
} else {
part to say the connection has gone. I also setup a timeout by counting the micros() since boot. so it's not constantly firing the reboot.
I then raise digital pin 3 which is linked to my 555 timer circuit, which causes the power cycle.
unsigned long resetCounter = micros(); int rebootAborted = 0; void processEthernetMessages() { char inputString[MQTT_MAX_PACKET_SIZE] = ""; uint8_t inputSize = 0; EthernetClient client = server.available(); if (client) { resetCounter=micros(); if (rebootAborted) { Serial.println("Rebooting Aborted"); rebootAborted = 0; } while (client.available()) { char inChar = client.read(); inputString[inputSize] = inChar; inputSize++; } #ifdef TCPDUMP Serial.print("<<"); char buf[4]; for (uint8_t a=0; a<inputSize; a++) { sprintf(buf,"%02X ", (uint8_t)inputString[a]); Serial.print(buf); } Serial.println(""); #endif gw.processMQTTMessage(inputString, inputSize); } else { if ((micros() - resetCounter) >= 100000000 && !client.connected() && !rebootAborted) { rebootAborted = 1; Serial.println("Rebooting"); pinMode(3,OUTPUT); digitalWrite(3,HIGH); delay(100); digitalWrite(3,LOW); } } }
