ESP32/ESP8266 RS485 gateway - example needed

[Konrad Winiarski]

Hi there!
Did anyone tried (successfuly) to use ESP32 as gateway for RS485 nodes?
So far I tried to (testing on ESP8266):

1. ...use example for Serial Gateway: https://www.mysensors.org/build/rs485 but no success. AltSoftwareSerial is not working with ESP32, it won't compile,
2. ...search for solution to replace AltSoftwareSerial to EspSoftwareSerial - but nothing found,
3. ...change to HWSerial (#define MY_RS485_HWSERIAL Serial1 // also checked with Serial) but there is no data "comming out" from TX pin (except ESP "junk" and the start),

Some debug info:

• The node (Arduino) is the code from example: https://www.mysensors.org/build/rs485:

381282 TSM:FAIL:RE-INIT
381284 TSM:INIT
381285 TSM:INIT:TSP OK
381287 TSF:SID:OK,ID=10
381290 TSM:FPAR
381308 ?TSF:MSG:SEND,10-10-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
383316 !TSM:FPAR:NO REPLY
383319 TSM:FPAR
383337 ?TSF:MSG:SEND,10-10-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
385345 !TSM:FPAR:NO REPLY
385347 TSM:FPAR
385366 ?TSF:MSG:SEND,10-10-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
387374 !TSM:FPAR:NO REPLY
387376 TSM:FPAR
387394 ?TSF:MSG:SEND,10-10-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
389402 !TSM:FPAR:FAIL
389404 TSM:FAIL:CNT=7
389406 TSM:FAIL:DIS
389408 TSF:TDI:TSL

• the data is transmitted out to RS485 (checked with another TTL-USB converter), hex:

01 FF 0A 58 07 02 0A 0A FF 02 03 07 FF 03 86 04

• the data is received from RS485 (same content) as above - DE/RE pins are controlled from ESP (at least Low State is set)
• RO is connected to RX pin at ESP32
• no response is comming out from TX pin (except junk at start)

The code:
Thanks in advance for hints!
Konrad

[benb]

@Konrad-Winiarski i tried this in the last days as well. It seems as if AltSoftSerial would be working if the right module names in the library boards definitions would be included. I searched for the wemos d1 mini and lolin esp32 lines but could not find them up to now.

Did you come any further since your post in 2021?

[JeeLet]

Dual Transport (dual bus)

Hello
Yes a Gateway with several buses or a Node with two different buses would be a good thing.

You may have seen the post and the version of @tekka

https://forum.mysensors.org/topic/11135/something-s-cooking-in-the-mysensors-labs?_=1674118354490
. maybe not a problem for you
"tekka's personal fork from the MySensors 2.4 branch and has not been updated"

https://github.com/tekka007/MySensors/tree/UpdateMultiTransport