@yveaux

nice tip; I am still getting into the proper mindset for memory conservation.

To be clear, do you mean the following?

void loop(){
  // for example
  float fgehum = myHumidity.readHumidity()
  send( MyMessage(CHILD_ID_FGEHUM,  V_HUM ).set(fgehum) );
...
}

Also, @mfalkvidd, why would you prefer to declare a MyMessage object instead of on the fly? I guess that there's overhead for creation of the object anew everytime. So there would be powersavings due to having a single and MyMessage object and then reusing it. Am I in the ballpark?

Yes, I have.
This is how I configured things:

https://github.com/oneyb/rpi-embed-dev/blob/master/install-mysensors-gateway-raspberry.yaml

HTH

Thank you @hek and @mfalkvidd for the quick replies! I did not receive a notification, so I had no idea anyone had had a look.

@mfalkvidd, indeed I like the group solution and just missed that option. Because I occasionally upload firmware with my Pi, I have the group 'dialout', which suits this purpose well. So, I tried it and it worked like a charm. I think that should be mentioned on the install page.

For the record:

./configure  --my-gateway=serial --my-serial-is-pty --my-serial-pty=/dev/ttyUSBMySensorsGateway --my-transport=nrf24 --my-rf24-irq-pin=15 --my-serial-groupname=dialout
make

I try to keep everything documented how I do things (for myself). I have an ansible playbook in my RPi ansible management repository.

For my configuration, please see:
https://github.com/oneyb/rpi-embed-dev/blob/master/install-mysensors-gateway-raspberry.yaml

Thanks again!

Dear All,
thank you for all the work done and all the help in advance. I have a hassbian controller and gateway working nicely with MySensors 2.2. I am happy.

One annoyance with the RPi gateway are the permissions of /dev/ttyUSBMySensorsGateway, which are by default owned by root and the root group. Modifying the permissions manually allows Home Assistant to happily read messages from the serial port until the next reboot (sudo chmod 777 /dev/ttyUSBMySensorsGateway).

How do you manage this? Ideally I would add the user homeassistant to the dialout group but this would not help because the group of this serial port is root, if I got it right. Likely this is a problem of udev rules. But how do you manage it?

I will put my setup on github as soon as it's cleaned up and tell you about it. Good stuff.

Thanks for the advice.

Cheers
Brian