Korg Forums

[oleczek]

Hi

I am trying to switch patterns of ER or EA using MIDI.

I can start/stop/play single notes and alter knobs (using NRPN messages). However I can't switch patterns. This means the cable and the connection are OK. I also googled for a few days but couldn't find any solution.

After studying the midi implementation I believe I should send this to change the pattern (to A.03):
B0 00 00 B0 20 00 C0 02

but it doesn't change anything.

However I have observed that this is not entirely wrong, because if I send:
b0 00 00 b0 20 01
or
b0 00 00 b0 20 00

then it will switch patterns between c.01 and a.01 (beginning of the bank change)

So it turns out that it doesn't take under consideration the c0 pp (NOTES1 section of the manual).

For your convenience I am pasting a snippet of the midi implementation:

# NOTE1 : Pattern number
#mm,bb,pp =
# 00,00,00~3F A01~64
# 00,00,40~7F B01~64
# 00,01,00~3F C01~64
# 00,01,40~7F D01~64

Manual:

3. Switching patterns
When you switch patterns, Program Change message and Bank
Select messages [Bn, 00, mm] (control change #00), [Bn, 20, bb]
(control change #32) (mm: bank number upper byte, bb: bank
number lower byte, together allowing 16,384 banks to be selected) will be transmitted.
If a Program Change is received on the MIDI channel of the ER1mkII, patterns will be switched within the same group (e.g.,
from A01 to A02). After a Bank Select has been received, the
next-received Program Change will be able to switch to a pattern of a different group (e.g., from A01 to C01).
Transmission and reception of Program Change messages can
be controlled by the MIDI mode MIDI Filter setting.
Bank Select
MSB LSB Program Change Pattern number
00 00 0...127 A01...b64
00 01 0...127 C01...d64

I also tried to dump the midi messages but for some reason I don't see how program change is triggered. Both my electribes work fine and they can send this midi message (if I change pattern on one of them then it changes on the second one, for example: A.01 -> A.02).

So my question is: what should I send via MIDI to change the pattern?

[oleczek]

In the meantime I found a manual in which the cable I use is described as non working (working only for simple notes, failing on complex midi messages).

source: http://electribe.cc/wp/installation/

Waiting for a new midi to usb converter.

[oleczek]

After I changed the cable it worked out of the box.

b0 00 00 b0 20 00 c0 10 changes the pattern to A.11

Problem solved.