Some questions about using Zynthian kit v.4.2 without Zynthian OS

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22

Thanks! Hmm I wrote “ttymidi -s /dev/ttyAMA0 -b 38400” to run ttymidi in the background, and I can see a couple of MIDI notes coming in, both in the terminal and when checking with a midi monitor, when I play keys on the keyboard. After this MIDI does not pass through anymore, so there seems to be some error that occurs because of the incoming MIDI. Any idea what this might be?

23

What version of ttymidi are you using?

24

I got my version of ttymidi from here: https://github.com/cjbarnes18/ttymidi

25

It’s totally unmaintained. You should try this one:

https://github.com/moddevices/mod-ttymidi.git

Regards,

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26

Thanks! I’ve compiled this version succesfully and got some new errors. Here’s what I found while running from the root:

pi@raspberrypi:/ $ sudo ttymidi -s /dev/ttyAMA0 -b 38400 &
[1] 1496
pi@raspberrypi:/ $ Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Error opening JACK client.
Error creating jack client.

I installed Jack before compiling ttymidi and that seemed to be succesful