Hi!
I’m trying to figure out how to get “shift” keys into MIOS, like a regular keyboard. Need up to 5 shift layers.
E.g I want to have one “seek-button”, and if one of the shift buttons are pressed simultaneous it will be in slow/medium/fast/skip mode and send different midi events for the selected layer.
I got this to work half-way, but there’s some bugs I don’t know how to work around. Here’s the modifcation of the small_skeleton:
USER_DIN_NotifyToggle
movff MIOS_PARAMETER1, TMP1 ;;Save button number
movff MIOS_PARAMETER2, TMP2 ;;Save button value
;;Get status of shift buttons connected to SR0
movlw 0x00
call MIOS_DIN_SRGet
;;Set default table
movlw 0x30
movwf TBLPTRH ;;Store high byte
movlw 0x80
movwf TBLPTRL ;;Store low byte
IFCLR MIOS_PARAMETER1,0, call USER_SET_Shift1_Table ;;Set base adress to shift1_table (0x3300)
IFCLR MIOS_PARAMETER1,1, call USER_SET_Shift2_Table ;;Set base adress to shift2_table (0x3400)
IFCLR MIOS_PARAMETER1,2, call USER_SET_Shift3_Table ;;Set base adress to shift3_table (0x3500)
;;Restore MIOS_PARAMETER's
movff TMP1, MIOS_PARAMETER1
movff TMP2, MIOS_PARAMETER2
;; calc address to MIDI event
clrf TMP2 ; clear help register
clrc ; clear carry bit
rlf MIOS_PARAMETER1, W ; shift button number to the left (== number * 2)
movwf TMP1 ; save result in TMP1
rlf TMP2, F ; shift TMP2 to the left (it's zero, but just for info)
movf TMP1, W ; add button offset (number *2) to TABLPTR
addwf TBLPTRL, F ; low-byte
movf TMP2, W
addwfc TBLPTRH, F ; high-byte (+carry bit on overrun)
;; read first MIDI byte
tblrd*+
;; exit routine if no event has been defined for this button (entry = 0xff)
incf TABLAT, W
skpnz
return
;; for MIDIbox Link: notify begin of stream
call MIOS_MIDI_BeginStream
;; send first MIDI byte
movf TABLAT, W
call MIOS_MIDI_TxBufferPut
;; read second MIDI byte and send it
tblrd*+
movf TABLAT, W
call MIOS_MIDI_TxBufferPut
;; send third MIDI byte: 0x7f if button pressed, else 0x00
movlw 0x7f
IFSET MIOS_PARAMETER2, 0, movlw 0x00
call MIOS_MIDI_TxBufferPut
;; for MIDIbox Link: notify end of stream
call MIOS_MIDI_EndStream
return
and the USER_Set_ShiftX_table functions:
USER_SET_Shift1_Table
;Sets the table pointer to Shift1_table
TABLE_ADDR SHIFT1_TABLE
return
USER_SET_Shift2_Table
;Sets the table pointer to Shift2_table
TABLE_ADDR SHIFT2_TABLE
return
USER_SET_Shift3_Table
;Sets the table pointer to Shift3_table
TABLE_ADDR SHIFT3_TABLE
return
the tables are defined like the normal MIOS_MPROC_EVENT_TABLE :
org 0x3300
;; MIDI Trigger entry structure
S1_ENTRY MACRO event_0, event_1
dw (event_1 << 8) | event_0
ENDM
S1_EOT MACRO
dw 0xffff
ENDM
SHIFT1_TABLE
;; entry 0x00-0x0f
S1_ENTRY 0xb1, 0x00
S1_ENTRY 0xb1, 0x01
S1_ENTRY 0xb1, 0x02
S1_ENTRY 0xb1, 0x03
S1_ENTRY 0xb1, 0x04
S1_ENTRY 0xb1, 0x05
;;etc....
Same structure in SHIFT[23]_TABLE. The table lookups work perfect, the mb sends different midi events based upon the shift key that is pressed. But… The problems starts when I’m start releasing (depressing) the buttons. Eg. if I press JUST “Shif1-button”, it sends B1 00 7F 2 — CC: Bank MSB fine! And when i release Shift1: B0 00 00 1 — CC: Bank MSB when i wanted it to send: B1 00 00 1 — CC: Bank MSB instead… Well, this is understandable if you look at the
IFCLR MIOS_PARAMETER1,0, call USER_SET_Shift1_Table ;;Set base adress to shift1_table (0x3300)
IFCLR MIOS_PARAMETER1,1, call USER_SET_Shift2_Table ;;Set base adress to shift2_table (0x3400)
IFCLR MIOS_PARAMETER1,2, call USER_SET_Shift3_Table ;;Set base adress to shift3_table (0x3500)
It will not set the TBLPTS[HL] to the rigth “layer” :( Though this is not the biggest problem as I don’t plan to use the shift-buttons to send relevant MIDI events.
The real problem is that buttons get stuck in pressed state if I release the shift button before the function button.
E.g:
1: Pressing shift1 and hold it down
=>B1 00 7F 2 — CC: Bank MSB (all ok)
2: Pressing button 7 connected to SR0:
=>B1 07 7F 2 — CC: Volume (as expected and wanted)
3: Releasing shift1 button
=>B0 00 00 1 — CC: Bank MSB (As expected, not wanted but not a problem)
4: Releasing button 7:
=>B0 07 00 1 — CC: Volume (As expected, but NOT wanted)
How I want it to work:
If I first release the shift button I want mb to send CC00 from all buttons that are pressed at that time and then send unshifted events for the same buttons.
So, how i want it to work…:
1: As above
2: As above
3: B1 00 00 2 — CC: Bank MSB (Shift1 of)
B1 07 00 2 — CC: Volume (Shift state of button 7 off)
B0 07 7F 1 — CC: Volume (Unshifted event for button 7 on)
4: B0 07 00 1 — CC: Volume (Unshifted event for button 7 off
So, how to modify my code to get rid of the bugs, or another solution? Can’t use MB64 firmware because i will have more than 64 physical buttons in my NI Traktor controller (going to be huge ;D ;D ;D)
Anyone ? TK ?
/Wise
