====== Summary ======

This page is for describing the functions found in the file seq_buttons.inc in the MBSEQ v2.4a application.  

seq_buttons.inc contains the handler functions for button presses. USER_DIN_NotifyToggle calls SEQ_Button_Handler which first checks to see if the button press came from one of the two shift registers which are assigned in main.asm to be the 16 general purpose buttons.

====== Functions ======

|SEQ_BUTTON_Handler|
|SEQ_BUTTON_Handler_ChkGP1|
|SEQ_BUTTON_Handler_ChkGP2|
|CS_MENU_BUTTON_Handler_NoGP|
|SEQ_BUTTON_Handler_Loop|
|SEQ_BUTTON_Handler_End|
|SEQ_BUTTON_GP|
|SEQ_BUTTON_GP1|	
|SEQ_BUTTON_GP2|	
|SEQ_BUTTON_GP3|	
|SEQ_BUTTON_GP4|
|SEQ_BUTTON_GP5|
|SEQ_BUTTON_GP6|
|SEQ_BUTTON_GP7|
|SEQ_BUTTON_GP8|
|SEQ_BUTTON_GP9|
|SEQ_BUTTON_GP10|
|SEQ_BUTTON_GP11|
|SEQ_BUTTON_GP12|
|SEQ_BUTTON_GP13|
|SEQ_BUTTON_GP14|
|SEQ_BUTTON_GP15|
|SEQ_BUTTON_GP16|
|SEQ_BUTTON_GP_Cont|
|SEQ_BUTTON_Select|	
|SEQ_BUTTON_Exit|	
|SEQ_BUTTON_Left|	
|SEQ_BUTTON_LeftRemote|
|SEQ_BUTTON_Right|
|SEQ_BUTTON_RightRemote|
|SEQ_BUTTON_StartStop|
|BUTTON_Control4SetStart|	
|SEQ_BUTTON_StartStop_Stop|
|SEQ_BUTTON_Pause|
|SEQ_BUTTON_Rew|
|SEQ_BUTTON_Fwd|
|SEQ_BUTTON_Play|
|SEQ_BUTTON_Stop|
|SEQ_BUTTON_Continue|
|SEQ_BUTTON_Edit|
|SEQ_BUTTON_Mute|
|SEQ_BUTTON_Pattern|
|SEQ_BUTTON_Song|	
|SEQ_BUTTON_Song_Toggle|
|SEQ_BUTTON_Song_Toggle_1|
|SEQ_BUTTON_Song_Toggle_0|	
|SEQ_BUTTON_Song_Toggle_Cont|
|SEQ_BUTTON_Song_NoToggle|
|SEQ_BUTTON_Menu|
|SEQ_BUTTON_Metronome|
|SEQ_BUTTON_Scrub|
|SEQ_BUTTON_Solo|
|SEQ_BUTTON_All|
|SEQ_BUTTON_Fast|
|SEQ_BUTTON_Fast_Loop|
|SEQ_BUTTON_LayerA|	
|SEQ_BUTTON_LayerB|
|SEQ_BUTTON_LayerC|
|SEQ_BUTTON_Layerx|	
|SEQ_BUTTON_Layerx_MPS|
|SEQ_BUTTON_Layerx_Edit|
|SEQ_BUTTON_Layer_Depr|
|SEQ_BUTTON_Track1|	
|SEQ_BUTTON_Track2|	
|SEQ_BUTTON_Track3|	
|SEQ_BUTTON_Track4|
|SEQ_BUTTON_Trackx_Cont|	
|SEQ_BUTTON_Trackx_MPS|
|SEQ_BUTTON_Trackx_Edit|
|SEQ_BUTTON_Trackx_Toggle|
|SEQ_BUTTON_Trackx_Radio|
|SEQ_BUTTON_Trackx_End|
|SEQ_BUTTON_Trackx_Hlp_Sav|
|SEQ_BUTTON_F1|
|SEQ_BUTTON_F2|
|SEQ_BUTTON_F3|
|SEQ_BUTTON_F4|
====== Function Descriptions ======
SEQ_BUTTON_Handler_ChkGP1 first moves MIOS_PARAMETER1 into W, AND's W with 0xf8 and then xorlw's against "(DEFAULT_GP_DIN_SR0 - 1) << 3" which, presumably results in zero if the registers match.  Perhaps the AND statement converts the button number in MIOS_PARAMETER1 into a value representing which SR it belongs to. 

SEQ_BUTTON_Handler searches through mios_tables.inc for a DIN pin that matches MIOS_PARAMETER1 and then calls the appr. function

From the comments:
	GP button number is stored in MIOS_PARAMETER1, button value in MIOS_PARAMETER2 (1 for released, 0 for pressed)

If the button press did come from one of the GP's then the program branches to SEQ_GP_Button in seq_gp.inc, not to be confused with SEQ_Button_GP in seq_button.inc.