mysgw not responding on RS485 data - raspberry pi zero

[Konrad Winiarski]

Hi!

I set up MySensors gateway on RPI Zero. The goal is to have a gateway for RS485 nodes and a HomeAsisstant on the same board.

I set up the UART like described here:
https://di-marco.net/blog/it/2020-06-06-raspberry_pi_3_4_and_0_w_serial_port_usage/

... and tested using Python script and separate TTL<->USB converter to view what is going on on TX/RX pins of RPI and Arduino (Node).

• (irrelevan for this topic) What is interesting - I have two systems set up (two SD cards) based on the same instruction. First I tried to install MySensors first (plain system) - the right device is /tty/AMA0. Second, I installed HomeAsisstant (Docker) first, then prepared ports and install MySensors - the right device is /ttyS0.

The installation process for the gateway was as follows:

sudo apt-get install git
git clone https://github.com/mysensors/MySensors.git --branch master
cd MySensors
sudo touch /dev/ttyUSB020 && sudo chmod 660 /dev/ttyUSB020 && sudo chown root:dialout /dev/ttyUSB020

and the configuration as follows:

sudo ./configure --my-debug=enable --my-config-file=/etc/mysensors.conf --my-transport=rs485 --my-gateway=serial --my-port=/dev/ttyUSB020 --my-serial-baudrate=115200 --my-serial-is-pty --my-rs485-de-pin=7 --my-rs485-serial-port=/dev/ttyAMA0 --my-rs485-baudrate=9600 --my-leds-err-pin=12 --my-leds-rx-pin=16 --my-leds-tx-pin=18

After I started the gateway using

sudo ./bin/mysgw

It started as follows:

Sep 21 12:43:27 ERROR Failed to open log pipe.
Sep 21 12:43:27 INFO  Starting gateway...
Sep 21 12:43:27 INFO  Protocol version - 2.3.2
Sep 21 12:43:27 DEBUG MCO:BGN:INIT GW,CP=RSNGL---,FQ=NA,REL=255,VER=2.3.2
Sep 21 12:43:27 DEBUG TSF:LRT:OK
Sep 21 12:43:27 DEBUG TSM:INIT
Sep 21 12:43:27 DEBUG TSF:WUR:MS=0
Sep 21 12:43:27 DEBUG Serial port /dev/ttyAMA0 (9600 baud) created
Sep 21 12:43:27 DEBUG TSM:INIT:TSP OK
Sep 21 12:43:27 DEBUG TSM:INIT:GW MODE
Sep 21 12:43:27 DEBUG TSM:READY:ID=0,PAR=0,DIS=0
Sep 21 12:43:27 DEBUG MCO:REG:NOT NEEDED
0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.3.2
Sep 21 12:43:27 DEBUG MCO:BGN:STP
Sep 21 12:43:27 DEBUG MCO:BGN:INIT OK,TSP=1

Sep 21 12:43:28 DEBUG TSM:READY:NWD REQ

Then I turned on the Node and it could not get response from gateway:

227278 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
229287 TSM:UPL
229306 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
231314 TSM:UPL
231332 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
233341 TSM:UPL
233360 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
235368 !TSM:UPL:FAIL
235370 TSM:FPAR
235371 TSM:FPAR:STATP=0
235373 TSM:ID
235375 TSM:ID:OK
235376 TSM:UPL

..untill I pressed <Enter>

Sep 21 12:49:40 DEBUG TSM:READY:NWD REQ
Sep 21 12:49:40 DEBUG ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
Sep 21 12:49:40 DEBUG TSF:MSG:READ,50-50-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
Sep 21 12:49:40 DEBUG TSF:MSG:PINGED,ID=50,HP=1
Sep 21 12:49:40 DEBUG TSF:MSG:SEND,0-0-50-50,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=OK:1

and on the node:

388210 TSF:MSG:BC
388353 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=21,pt=1,l=1,sg=0,ft=0,st=OK:0
388360 TSF:MSG:READ,0-0-50,s=255,c=3,t=25,pt=1,l=1,sg=0:1
388365 TSF:MSG:PONG RECV,HP=1
388368 TSM:UPL:OK
388369 TSM:READY:ID=50,PAR=0,DIS=1
388391 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
390421 TSF:MSG:SEND,50-50-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.3.2
390446 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
392480 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=11,pt=0,l=12,sg=0,ft=0,st=OK:Light Sensor
392508 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.0
392531 TSF:MSG:SEND,50-50-0-0,s=0,c=0,t=16,pt=0,l=0,sg=0,ft=0,st=OK:
392538 MCO:REG:REQ
392557 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
394582 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
396605 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
398628 TSF:MSG:SEND,50-50-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
400635 MCO:BGN:INIT OK,TSP=1

So it seems fine - there is communication etc... The problem is that nothing happens on the gateway side untill I press <Enter>. It does not work "by it self". After I hit the key again (in putty) the program shows all data sent by Node since last press.

Same problem seems to be when the mysgw is stared as daemon (--daemon or as service) - there is no reaction on Nodes. I waited 45min :(.

Any idea for that?
Regards!
Konrad

[Konrad Winiarski]

I have checked with ethernet port instead of serial:

sudo ./configure --my-debug=enable --my-config-file=/etc/mysensors.conf --my-transport=rs485 --my-gateway=ethernet --my-port=5003 --my-rs485-de-pin=7 --my-rs485-serial-port=/dev/ttyS0 --my-rs485-baudrate=9600 --my-leds-err-pin=12 --my-leds-rx-pin=16 --my-leds-tx-pin=18

The results is:

1. The gateway works with nodes as expected - no need to hit Enter for updates. It works as daemon as well.
   So why it not works on gateway with serial? My suspicious is the port - I was using fake ones (/dev/ttyMySensorsGateway and /dev/ttyUSB020) and the real one /dev/ttyAMA0. Always the same. I tried to listen the (fake) port with "screen" command - nothing was there.

2. I have another finding/problem. When the gateway starts:

Sep 21 14:20:57 ERROR Failed to open log pipe.
Sep 21 14:20:57 INFO  Starting gateway...
Sep 21 14:20:57 INFO  Protocol version - 2.3.2
Sep 21 14:20:57 DEBUG MCO:BGN:INIT GW,CP=RSNGL---,FQ=NA,REL=255,VER=2.3.2
Sep 21 14:20:57 DEBUG TSF:LRT:OK
Sep 21 14:20:57 DEBUG TSM:INIT
Sep 21 14:20:57 DEBUG TSF:WUR:MS=0
Sep 21 14:20:57 DEBUG Serial port /dev/ttyS0 (9600 baud) created
Sep 21 14:20:57 DEBUG TSM:INIT:TSP OK
Sep 21 14:20:57 DEBUG TSM:INIT:GW MODE
Sep 21 14:20:57 DEBUG TSM:READY:ID=0,PAR=0,DIS=0
Sep 21 14:20:57 DEBUG MCO:REG:NOT NEEDED
Sep 21 14:20:57 DEBUG Listening for connections on F▒▒:5003
Sep 21 14:20:57 DEBUG MCO:BGN:STP
Sep 21 14:20:57 DEBUG MCO:BGN:INIT OK,TSP=1
Sep 21 14:20:57 DEBUG TSM:READY:NWD REQ
Sep 21 14:20:57 DEBUG ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
Sep 21 14:21:10 DEBUG TSF:MSG:READ,50-50-0,s=0,c=1,t=23,pt=2,l=2,sg=0:58

... you can find that instead of IP address (I was expecting 127.0.0.0 or 0.0.0.0) I get a garbage:

DEBUG Listening for connections on F▒▒:5003

After another trial (make clean -> ./configure .... -> make I get similar but with different "garbage":

DEBUG Listening for connections on ▒ݾ:

Home Assistant is unable to find the gateway on ports 127.0.0.1 and 0.0.0.0. I tried local network IP (static) - it was "accepted" (no connection error returned), but no Nodes has been found.
I'm really stubborn to find single board solution for Gateway (RS485 nodes) and Controller but I'm getting tired :(.

[Jstoaks]

@Konrad-Winiarski
I have the same issue with this, Did you ever fins a resolve for this??
The only diff is that with the newer distro its listed a serial0
But I also show the ethernet as garbage, Home assistant does connect to the IP specified, so it says.

[Konrad Winiarski]

@Jstoaks no, I did not. I gave up. After some research I found better solution:
Raspberry PI zero + mysgw (485) + Mqtt + Node Red with Dashboard UI. It works great. I use mqtt for both mysensors and wifi devices (esp32/esp8266).
Node Red handles my home automation very well.

[JeeLet]

Hello @Konrad-Winiarski and best wishes for 2023

if you have time you can tell us more about the architecture you have chosen.

the part

• mysgw (485) : gateway USB?
• Mqtt : Mosiquitto !
• Node Red : flow exemple?

yes examples for a small test installation

thanks

https://forum.mysensors.org/topic/11513/corrupted-data-from-rs485-sensor-node/3