syntax = "proto3";

package sys;
import "GPIO.proto";
import "nanopb.proto";
option (nanopb_fileopt).enum_to_string = true;

enum ButtonAction {
  ACTRLS_NONE = 0;
  ACTRLS_POWER = 1;
  ACTRLS_VOLUP = 2;
  ACTRLS_VOLDOWN = 3;
  ACTRLS_TOGGLE = 4;
  ACTRLS_PLAY = 5;
  ACTRLS_PAUSE = 6;
  ACTRLS_STOP = 7;
  ACTRLS_REW = 8;
  ACTRLS_FWD = 9;
  ACTRLS_PREV = 10;
  ACTRLS_NEXT = 11;
  BCTRLS_UP = 12;
  BCTRLS_DOWN = 13;
  BCTRLS_LEFT = 14;
  BCTRLS_RIGHT = 15;
  BCTRLS_PS1 = 16;
  BCTRLS_PS2 = 17;
  BCTRLS_PS3 = 18;
  BCTRLS_PS4 = 19;
  BCTRLS_PS5 = 20;
  BCTRLS_PS6 = 21;
  BCTRLS_PS7 = 22;
  BCTRLS_PS8 = 23;
  BCTRLS_PS9 = 24;
  BCTRLS_PS10 = 25;
  KNOB_LEFT = 26;
  KNOB_RIGHT = 27;
  KNOB_PUSH = 28;
  ACTRLS_SLEEP = 29;
}
// Message for ButtonActions
message ButtonActions {
  option (nanopb_msgopt).msgid  = 10004;
  ButtonAction pressed = 1 ;
  ButtonAction released = 2 ;
}
message Button {
  option (nanopb_msgopt).msgid  = 10005;
  GPIO gpio = 1;
  bool pull = 2;
  int32 debounce = 3;
  GPIO shifter = 4;
  int32 longduration = 5;
  ButtonActions normal = 6;
  ButtonActions longpress = 7;
  ButtonActions shifted = 8;
  ButtonActions longshifted = 9;
}
message KnobOnly {
  option (nanopb_msgopt).msgid  = 10006;
  // This mode attempts to offer a single knob full navigation which is a bit contorded due to LMS UI's 
  // principles. Left, Right and Press obey to LMS's navigation rules and especially Press always goes to 
  // lower submenu item, even when navigating in the Music Library. That causes a challenge as there is no 
  // 'Play', 'Back' or 'Pause' button. Workaround are as of below:
  // - longpress is 'Play'
  // - double press is 'Back' (Left in LMS's terminology).
  // - a quick left-right movement on the encoder is 'Pause'
  //
  // The speed of double click (or left-right) can be set using the optional parameter of 'knobonly'. 
  // This is not a perfect solution, and other ideas are welcome. Be aware that the longer you set double 
  // click speed, the less responsive the interface will be. The reason is that I need to wait for that 
  // delay before deciding if it's a single or double click. It can also make menu navigation "hesitations" 
  // being easily interpreted as 'Pause'
  bool enable = 1; // Enable/disable
  int32 delay_ms = 2; // optionally set the delay

}
message Rotary {
  option (nanopb_msgopt).msgid  = 10007;
  GPIO A = 1;
  GPIO B = 2;
  GPIO SW = 3;
  KnobOnly knobonly = 4;
  bool volume = 5;
  bool longpress = 6;
}