Link switch input¶
The link switch input (LINK_SW) can be used to interface with a momentary (monostable) closing push button to facilitate a simple user interface. This is an alternative to using the SPI interface to integrate into a host device's menu system.
This signal is Internally pulled high to 3.3V.
The switch input has several functions, please see the table below for details about the functions of the switch input.
|Link||Only for transmitters. Pull signal low (button pressed) for 0.1-1 second.|
|Unlink||Hold signal low (button pressed) for >3 seconds.|
|Change RX/TX mode||See Mode selection for more info|
|Change TX protocol||See Mode selection for more info|
|Force firmware update mode||Hold signal low (button pressed) during power on and keep pressing until discovered by update tool.|