ESP8266 gateway and sensor node not talking - noobie

[Yveaux]

@chrille Try adding the following line to your setup() function:

ESP.wdtDisable();

It should disable the (software) watchdog on ESP. See if it continues, or if it will now just hang.

[chrille]

@Yveaux Just tried that. The change removed the watchdog message and the stack trace, but the module still reboots

[chrille]

...I also tried to change TIME_OUT in rfm69.cpp to 500 as suggested by Fabien. Doesn't make any difference

[Yveaux]

@chrille said:

the module still reboots

Probably the hardware watchdog kicks in then...

[chrille]

@Yveaux I did some further tests and it may be related to the inclusion mode feature. At least disabling this makes things more stable - but I still haven't got the radio side working reliable. When this is working I will go back to the gateway and see if I can find out what triggers the crash

[chrille]

@Yveaux I think I have narrowed down the issue now to this code in RFM69.cpp

void RFM69::sendACK(const void* buffer, byte bufferSize) {
debug(PSTR("RFM69: void sendACK\n"));
  byte sender = SENDERID;
  debug(PSTR("RFM69: sendACK - entering while()\n"));
  while (!canSend()) receiveDone();
  sendFrame(sender, buffer, bufferSize, false, true);
}

(The debug lines are added by me)

Most of the time the WDT kicks in, after logging "entering while()" - occasionally it will reach sendFrame() and log a "read: " line but then the WDT kicks in when it gets to the while() loop again.
sendAck is called from sendFrame, that disables interrupts, by calling select()

With a bunch of additional debug turned on, this is what I get on the console

0;255;3;0;9;Init complete, id=0, parent=0, distance=0
chg_B:-60
chg_B:-120
0;255;3;0;9;RFM69: interruptHandler
0;255;3;0;9;RFM69: IRQ handler - select chip
0;255;3;0;9;RFM69: IRQ handler - release chip
0;255;3;0;9;RFM69: IRQ handler - read RSSI
0;255;3;0;9;RFM69: receiveDone() - payload
0;255;3;0;9;RFM69: void sendACK
chg_B:-60
0;255;3;0;9;RFM69: sendACK - entering while()
0;255;3;0;9;RFM69: sendFrame()
0;255;3;0;9;RFM69: interruptHandler
0;255;3;0;9;RFM69: IRQ handler - read RSSI
0;255;3;0;9;read: 255-255-0 s=255,c=3,t=3,pt=0,l=0,sg=0:
0;255;3;0;9;RFM69: interruptHandler
0;255;3;0;9;RFM69: IRQ handler - select chip
0;255;3;0;9;RFM69: IRQ handler - release chip
0;255;3;0;9;RFM69: IRQ handler - read RSSI
0;255;3;0;9;RFM69: receiveDone() - payload
0;255;3;0;9;RFM69: void sendACK
0;255;3;0;9;RFM69: sendACK - entering while()

Soft WDT reset

ctx: cont
sp: 3ffefa70 end: 3ffefd30 offset: 01b0

>>>stack>>>
3ffefc20:  00000001 3ffefdd4 3ffeffdc 000000ff
3ffefc30:  00000024 3ffefdd4 3ffeffdc 402022da
3ffefc40:  3ffe8496 00000000 3ffefdd4 40202360
3ffefc50:  00000000 00000000 3ffefdd4 4020254b
3ffefc60:  3ffefdf2 00000000 3ffefdd4 402037f9
3ffefc70:  3fffdc20 00000000 3ffefdd4 3ffefdac
3ffefc80:  3fffdc20 3ffefdf1 3ffefdd4 4020385c
3ffefc90:  00000003 00000000 3ffeecf8 40204035
3ffefca0:  00000003 00000000 00000000 00000000
3ffefcb0:  3ffefd58 3ffefdd4 3ffeffdc 3ffeed00
3ffefcc0:  3ffefe00 00000000 3ffefe98 40203aec
3ffefcd0:  00000003 00000000 000000ff 00000000
3ffefce0:  000000ff 00000002 00000000 00000000
3ffefcf0:  3fffdc20 00000000 3ffeecf8 3ffeed00
3ffefd00:  3fffdc20 00000000 3ffeecf8 40203c06
3ffefd10:  00000000 00000000 3ffeecf8 4020432c
3ffefd20:  00000000 00000000 3ffeed10 40100114
<<<stack<<<

Any ideas on how to fix this, would be greatly appreciated!

[Yveaux]

@chrille I'm not familiar with rfm implementation, but you could try adding a call to yield() inside the while loop.

[chrille]

@Yveaux Thank you very much. This seems to have fixed the issue now!

[Yveaux]

@chrille Could you create a pull-request (or a bug report) for this fix in MySensors' github repo ?

[chrille]

@Yveaux I already did! https://github.com/mysensors/Arduino/pull/396