@dbemowsk The serial API (=communication between controller and GW) doesn't distinguish between different transport technologies used in a specific GW. So it's not important if a GW is using nRF, RS485, RFM69, none or whatever else as a transceiver.
@Tommas there can only be one gateway per MySensors network. So you'll need to put the nodes on different networks.
See https://www.mysensors.org/about/network for more info on how nodes, gateways and networks work.
How to set change the channel depends on which transport you are using. Look for the channel setting in MyConfig.h. All nodes in one MySensors network must use the same channel.
If you are going to use a different channel for each network, make sure you have them at least 10 channels apart as I noticed that if they are too close they can still talk to each other
@terence-faul this is not a fail prove design. Nodes are not typically moved even within one GW. Each GW must have each one channel and the same goes for nodes. Otherwise, in theory you may have a situation that the same node is reporting to one GW and then to the other GW. For controller this is going to be a chaos. A lot of data will be shared between two similar child IDs, i.e. for example two similar temperature child IDs for one node will have one measurement assigned through the first GW to the first temperature child ID and another measurement assigned to another child ID through another GW.
@jocke4u I run 2 RF gateways and it's not a problem. When you 'migrate' a node to a new gateway make sure to run the mysensors clear eeprom sketch first to get rid of the old routing table or you might have issues.
I will answer myself after some testing done today:
How can I change network id for gateway (mysgw)?
It is possible to change MY_RFM69_NETWORKID for mysgw by exporting CPPFLAGS variable with the option set before running ./configure:
example:
export CPPFLAGS='-DMY_RFM69_NETWORKID="101"'
./configure --my-gateway=serial --my-transport=rfm69 --my-rfm69-frequency=868 --my-is-rfm69hw --my-serial-is-pty --my-serial-port=/dev/ttyUSB-MysGW --my-serial-groupname=dialout
make
Is it possible to create another RFM69 network on new hardware, just for the test, while my current RFM69 network keeps running on current gateway/controller?
As soon as I started another RFM69 gateway (mysgw) on new hw, even with different network id (101), most of the sensors connected to my other (production) gateway running on old hw with default network id (100) stopped communicating... so it seems it is not possible to run multiple RFM69 gateways in the same range (on the same freq).
