A keyboard input block allows to read a registered set of keys from the keyboard. This set of registered keys are available on the output of this block. To give an example

KeyboardInput<3> keyboard{{'a','b','c'}, {"start", "stop", "home"}};

The three keys 'a', 'b', 'c' are registered and will be available on the output. The output itself is an array with three fields each of type bool. As soon as you press 'a', the corresponding signal will be set to true. You have to manually reset the signal to false with

keyboard.reset(0);

For each registered key, the keyboard input block automatically creates a instance of hal::KeyboardDigIn. This is a digital input of the HAL and can be used as such. For instance, it could be used as a critical input to the safety system, see KeyboardTest.cpp. When used as a HAL input, it is not necessary to reset manually. It will be reset automatically when read by the HAL.