diff --git a/avr/modules/lcd2/gui/base/button.asm b/avr/modules/lcd2/gui/base/button.asm
index a36bd6e..8ef8c03 100644
--- a/avr/modules/lcd2/gui/base/button.asm
+++ b/avr/modules/lcd2/gui/base/button.asm
@@ -27,6 +27,7 @@
 ; button modes
 .equ BUTTON_MODE_NORMAL   = 0
 .equ BUTTON_MODE_REPEATED = 1
+.equ BUTTON_MODE_LONG     = 2
 
 ; button states
 .equ BUTTON_STATE_INACTIVE   = 0
@@ -35,6 +36,8 @@
 .equ BUTTON_STATE_REPEATING  = 3
 
 
+.equ BUTTON_LONGPRESS_TIME100MS = 50
+
 
 ; ***************************************************************************
 ; code
@@ -145,10 +148,15 @@ Button_OnTouchBegin:
   ldd r16, Y+BUTTON_OFFS_MODE
   cpi r16, BUTTON_MODE_REPEATED
   breq Button_OnTouchBegin_repeated
+  cpi r16, BUTTON_MODE_LONG
+  breq Button_OnTouchBegin_setActiveResetTimer
+  cpi r16, BUTTON_MODE_NORMAL
+  brne Button_OnTouchBegin_done
+Button_OnTouchBegin_setActiveResetTimer:
   ldi r16, BUTTON_STATE_ACTIVE
   std Y+BUTTON_OFFS_STATE, r16
   clr r16
-  std Y+BUTTON_OFFS_TIMER, r16
+  std Y+BUTTON_OFFS_TIMER, r16      ; reset timer
   rjmp Button_OnTouchBegin_done
 Button_OnTouchBegin_repeated:
   ldi r16, BUTTON_STATE_WAITREPEAT
@@ -176,14 +184,32 @@ Button_OnTouchEnd:
   bigcall OBJ_SubFlagsDown    ; (r17, r18, r19)
   ldi r16, (1<<WIDGET_FLAGS_DIRTY_BIT)
   bigcall OBJ_AddFlagsDown    ; (r17, r18, r19)
-  clr r16
-  std Y+BUTTON_OFFS_TIMER, r16
+
+  ; check mode
+  ldd r17, Y+BUTTON_OFFS_MODE
+  cpi r17, BUTTON_MODE_REPEATED
+  breq Button_OnTouchEnd_repeating
+  cpi r17, BUTTON_MODE_NORMAL
+  breq Button_OnTouchEnd_emitCommand
+  cpi r17, BUTTON_MODE_LONG
+  brne Button_OnTouchEnd_done
+Button_OnTouchEnd_long:
+  ldd r17, Y+BUTTON_OFFS_TIMER
+  cpi r17, BUTTON_LONGPRESS_TIME100MS
+  brcs Button_OnTouchEnd_emitCommand
+  ldi r16, WIDGET_SIGNAL_ALTCMD
+  rjmp Button_OnTouchEnd_emit
+Button_OnTouchEnd_repeating:
   ldd r16, Y+BUTTON_OFFS_STATE
   cpi r16, BUTTON_STATE_REPEATING
   breq Button_OnTouchEnd_done
+Button_OnTouchEnd_emitCommand:
   ldi r16, WIDGET_SIGNAL_COMMAND
+Button_OnTouchEnd_emit:
   bigcall OBJ_EmitSignal
 Button_OnTouchEnd_done:
+  clr r16
+  std Y+BUTTON_OFFS_TIMER, r16
   ldi r16, BUTTON_STATE_INACTIVE
   std Y+BUTTON_OFFS_STATE, r16
   sec
@@ -218,6 +244,20 @@ Button_OnTouchMove:
 ; @clobbers any, !Y
 
 Button_OnTimer:
+  ldd r16, Y+BUTTON_OFFS_MODE
+  cpi r16, BUTTON_MODE_NORMAL
+  breq Button_OnTimer_ret          ; nothing to do in normal mode
+  cpi r16, BUTTON_MODE_REPEATED
+  breq Button_OnTimer_repeated     ; handle repeats in repeating mode
+  cpi r16, BUTTON_MODE_LONG
+  brne Button_OnTimer_ret          ; jump on invalid mode
+  ; long mode: increment timer counter
+  ldd r16, Y+BUTTON_OFFS_TIMER
+  inc r16
+  breq Button_OnTimer_ret
+  std Y+BUTTON_OFFS_TIMER, r16
+  rjmp Button_OnTimer_ret
+Button_OnTimer_repeated:
   ldd r16, Y+BUTTON_OFFS_TIMER
   tst r16
   breq Button_OnTimer_ret