[SYSEX] need help reading nanoKONTROL2 knobs and sliders

[markaren10]

Hi All,

I am building a small wireless interface for a KORG nanoKONTROL2 MIDI-over-USB control surface. The system is based on a Microchip dsPIC device with USB host port, so far so good; everything works as expected in terms of controlling LEDs on the control surface, and reading back sliders, knobs etc. as Control Change messages. For example, after moving a slider, a message is received 0x0B, 0xB0, 0x02, 0x78 -- Cable 0, Control Change, Address 2, Data 0x78, etc.

As part of system initialization, I need to be able to fetch knob and slider positions. This appears to be covered in KORG document "nanoKONTROL2 MIDI Implementation Revision 1.00 (2010.12.14)", the last section references "Native KORG Mode Knob/Slider Output" which may be what is required.

However I am having difficulty constructing the required associated SYSEX command, and this is where I need some help.

Things that may need to happen:

1) put unit into native mode
2) send request to read knobs/sliders
3) fetch knob/slider data
4) return unit to original mode

I am not even sure if this sequence is appropriate, please feel free to correct me.

If someone can talk me through these steps, or if an example exists that will guide me in the right direction I will be most grateful.

Many thanks,

Mark

[burtonrodman]

were you able to get the nanoKontrol to report its current status of sliders?

I am working on a Windows app that controls all the audio device, mixer sessions and can send various keyboard shortcuts etc...

I have implemented the typical workaround of not responding to the slider until i receive a message that it is at or near the "current level" of whatever i'm controlling. But it would be very nice to be able to force the device to report its current state of all controls.