Im using weewx V5.02 and Im
using https://github.com/weewx/weewx/wiki/weewx-multi to connect 2 vantage
pro consoles. All is working as expected.
However when I moved the raspberry pi and connected the power back on the
/dev/ttyUSB 0 and 1 had switched over.
In the wiki I found a document on UDEV rules for USB ports and using
sudo udevadm info -a -n /dev/ttyUSB0
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device
'/devices/platform/axi/1000120000.pcie/1f00200000.usb/xhci->
KERNEL=="ttyUSB0"
SUBSYSTEM=="tty"
DRIVER==""
ATTR{power/control}=="auto"
ATTR{power/runtime_active_time}=="0"
ATTR{power/runtime_status}=="unsupported"
ATTR{power/runtime_suspended_time}=="0"
looking at parent device
'/devices/platform/axi/1000120000.pcie/1f00200000.us>
KERNELS=="ttyUSB0"
SUBSYSTEMS=="usb-serial"
DRIVERS=="cp210x"
sudo udevadm info -a -n /dev/ttyUSB1
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device
'/devices/platform/axi/1000120000.pcie/1f00300000.usb/xhci->
KERNEL=="ttyUSB1"
SUBSYSTEM=="tty"
DRIVER==""
ATTR{power/control}=="auto"
ATTR{power/runtime_active_time}=="0"
ATTR{power/runtime_status}=="unsupported"
ATTR{power/runtime_suspended_time}=="0"
looking at parent device
'/devices/platform/axi/1000120000.pcie/1f00300000.us>
KERNELS=="ttyUSB1"
SUBSYSTEMS=="usb-serial"
DRIVERS=="cp210x"
They look identical to me so Im wondering if this will work and if they
will work what do you put in
# FTDI usb-serial converter for device A ACTION=="add",
ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001",
ATTRS{serial}=="XXXXXXXX", SYMLINK+="deviceA" # FTDI usb-serial converter
for device B ACTION=="add", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6001", ATTRS{serial}=="YYYYYYYY", SYMLINK+="deviceB"
Thanks for help
Phil
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