Arduino never reaches setup() or loop() when rs485 connection is down

[StorePeter]

I am trying to add MySensors connectivity via rs485 on diy thermostats (arduino based)

As long as I have a connection to a rs485 gateway things seems to be working fine, but if the connection is lost (or the gateway-program on my Linux box is not running) the thermostat never starts up. only the code in before() is executed

Is that the expected behavior, and is there anyway around this ?

I need my thermostats to work even if there is no connectivity to the MySensors infrastructure.

Here is what I see on the serial port of the arduino when the gateway is down.

 __  __       ____
|  \/  |_   _/ ___|  ___ _ __  ___  ___  _ __ ___
| |\/| | | | \___ \ / _ \ `_ \/ __|/ _ \| `__/ __|
| |  | | |_| |___| |  __/ | | \__ \  _  | |  \__ \
|_|  |_|\__, |____/ \___|_| |_|___/\___/|_|  |___/
        |___/                      2.3.1

16 MCO:BGN:INIT NODE,CP=RSNNA---,REL=255,VER=2.3.1
26 MCO:BGN:BFR
ShuntCtrl
to clear EEPROM presss c now:  321
4142 TSM:INIT
4143 TSF:WUR:MS=0
4145 TSM:INIT:TSP OK
4146 TSM:INIT:STATID=123
4149 TSF:SID:OK,ID=123
4151 TSM:FPAR
4168 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6176 !TSM:FPAR:NO REPLY
6178 TSM:FPAR
6196 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8204 !TSM:FPAR:NO REPLY
8206 TSM:FPAR
8223 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
10231 !TSM:FPAR:NO REPLY
10233 TSM:FPAR
10252 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
12259 !TSM:FPAR:FAIL
12260 TSM:FAIL:CNT=1
12262 TSM:FAIL:DIS
12264 TSF:TDI:TSL
22267 TSM:FAIL:RE-INIT
22269 TSM:INIT
22270 TSM:INIT:TSP OK
22273 TSM:INIT:STATID=123
22275 TSF:SID:OK,ID=123
22278 TSM:FPAR
22295 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
24303 !TSM:FPAR:NO REPLY
24305 TSM:FPAR
24324 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
26331 !TSM:FPAR:NO REPLY
26333 TSM:FPAR
26351 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
28358 !TSM:FPAR:NO REPLY
28360 TSM:FPAR
28379 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
30386 !TSM:FPAR:FAIL
30387 TSM:FAIL:CNT=2
30389 TSM:FAIL:DIS
30391 TSF:TDI:TSL
40394 TSM:FAIL:RE-INIT
40396 TSM:INIT
40397 TSM:INIT:TSP OK
40399 TSM:INIT:STATID=123

[mfalkvidd]

welcome to the forum @storepeter !

Yes this is expected default behavior, but it can be changed. Exactly how things should work varies a bit from different use cases, but see the documentation for MY_TRANSPORT_WAIT_READY_MS and search for that keyword in the forum to find some ways to do it.

See the flowchart "node boot sequence" at https://www.mysensors.org/download/sensor_api_20#node-boot-sequence to see how changing MY_TRANSPORT_WAIT_READY_MS will affect how code is executed.

If you have any questions, just post them here.

[StorePeter]

Thank you so much, just the input I needed.

Works like a charm, I have included the output from the serial port, if any one else wonders what to expect.

__  __       ____
|  \/  |_   _/ ___|  ___ _ __  ___  ___  _ __ ___
| |\/| | | | \___ \ / _ \ `_ \/ __|/ _ \| `__/ __|
| |  | | |_| |___| |  __/ | | \__ \  _  | |  \__ \
|_|  |_|\__, |____/ \___|_| |_|___/\___/|_|  |___/
        |___/                      2.3.1

16 MCO:BGN:INIT NODE,CP=RSNNA---,REL=255,VER=2.3.1
26 MCO:BGN:BFR
before
ShuntCtrl
to clear EEPROM presss c now:  321
4156 TSM:INIT
4157 TSF:WUR:MS=1000
4159 TSM:INIT:TSP OK
4161 TSM:INIT:STATID=123
4163 TSF:SID:OK,ID=123
4165 TSM:FPAR
4184 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
5159 MCO:BGN:STP
setup
5161 !TSF:SND:TNR
6164 !TSF:SND:TNR
6192 !TSM:FPAR:NO REPLY
6194 TSM:FPAR
6211 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
7165 MCO:BGN:INIT OK,TSP=0
8288 !MCO:SND:NODE NOT REG
8372 !MCO:SND:NODE NOT REG
8455 !MCO:SND:NODE NOT REG
8539 !MCO:SND:NODE NOT REG
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
8636 !TSM:FPAR:NO REPLY
8638 TSM:FPAR
8656 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
11094 !TSM:FPAR:NO REPLY
11096 TSM:FPAR
11114 TSF:MSG:SEND,123-123-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
13550 !TSM:FPAR:FAIL
13552 TSM:FAIL:CNT=1
13554 TSM:FAIL:DIS
13556 TSF:TDI:TSL
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
[ %0PH 18.8 Vejr 18.7 ] [ %16PC 18.6 ->25 18.4 ]
23558 TSM:FAIL:RE-INIT
23560 TSM:INIT
23561 TSM:INIT:TSP OK
23563 TSM:INIT:STATID=123
23565 TSF:SID:OK,ID=123