Only from home-assistant’s log output. The switches generate one signal for press and one for a release:
... Bus:Handling <Event button_pressed[L]: which=1, pushed=1, id=[0, 0, 0, 0], onoff=0>
... Bus:Handling <Event button_pressed[L]: which=1, pushed=0, id=[0, 0, 0, 0], onoff=0>
The FT55 has four switches. Let’s call them left-up, left-down, right-up and right-down. I won’t assciate any values to the names since the switch can be rotated by 180 degrees.
Due to the rocker design the left switches and the right switches are grouped. The group is identified by the ‘which’ field in the event data (0 or 1).
The ‘onoff’ field identifies the up or down switch (also 0 or 1).
‘pushed’ is 1 for the button press and 0 for the release. The two events could be used to distinguish short and long presses or closing blinds as long as the button is pressed.
‘id’ is the enocean id of the switch (used in the binary_sensor definition and printed on the switch).