Re: [Jack-Devel] dumping MIDI events to a logfile
On Thu, Jan 14, 2016 at 3:06 PM, Benjamin Henrion <[hidden]> wrote:
> On Mon, Jan 11, 2016 at 5:15 PM, Benjamin Henrion <[hidden]> wrote:
>> On Mon, Jan 11, 2016 at 5:05 PM, Hanspeter Portner <[hidden]> wrote:
>>> On 11.01.2016 16:11, Benjamin Henrion wrote:
>>>> On Mon, Jan 11, 2016 at 3:56 PM, Paul Davis <[hidden]> wrote:
>>>>> You have to connect jack_midi_dump to the relevant MIDI port(s). You can
>>>>> start JACK using qjackctl or cadence, and then use their connection dialogs.
>>>>> You could use jack_connect. There are other ways too.
>>>>>
>>>>> You could also use gmidimon :)
>>>>
>>>> I also tried to hook an FTDI in 5V on the MIDI out connector in
>>>> 31250bps, I could only see the FE or FC (depending if I would add a
>>>> resistor) MIDI messages, and the keyboard would behave differently as
>>>> plugged in with the USB:
>>>>
>>>> https://pastee.org/27xc8
>>>>
>>>> I thought sniffing midi was easier...
>>>
>>> If you just want to sniff the raw MIDI transferred via USB, why not simply use amidi [1]?
>>> There's no need to fiddle with/route via JACK here, imho.
>>>
>>> Get the alsa MIDI hardware name for 'UMONE'
>>> export HW=$(amidi -l | grep UMONE | head -n 1 | gawk '{print $2}')
>>>
>>> Dump to console:
>>> amidi -p ${HW} -d
>>>
>>> Dump to file:
>>> amidi -p ${HW} -r my_dump.rawmidi
>>
>> Thanks, it worked!
>>
>> Sorry never played with MIDI before. I am still interested to dump the
>> MIDI from the serial wire, as the original intent was to build an
>> ESP8266 serial2wifi module (straight from the MIDI out connector, no
>> Roland USB converter), and to encapsulate the MIDI messages over some
>> TCP transport.
>
> If you are interested, my friend pieter made this morning a small app
> that takes MIDI events, sends them on the LAN, and receive them on
> another box (WIP):
>
> https://github.com/ZyreApps/DeMidi
>
> It is connected on the receiving side to qsynth+qjackctl.
>
> I am trying to install that on a small openwrt box:
>
> http://www.zoobab.com/glinet
>
> But I can't get amidi to list the HW devices (I had to install
> kmod-sound-dummy because the device does not have any soundcard):
>
> root@OpenWrt:/proc/asound# amidi -l
> Dir Device Name
> root@OpenWrt:/proc/asound#
>
> root@OpenWrt:/proc/asound# ls -al
> dr-xr-xr-x 5 root root 0 Jan 5 12:20 .
> dr-xr-xr-x 42 root root 0 Jan 1 1970 ..
> lrwxrwxrwx 1 root root 5 Jan 5 12:21 Dummy -> card0
> dr-xr-xr-x 4 root root 0 Jan 5 12:21 card0
> -r--r--r-- 1 root root 0 Jan 5 12:21 cards
> -r--r--r-- 1 root root 0 Jan 5 12:21 devices
> -r--r--r-- 1 root root 0 Jan 5 12:21 hwdep
> -r--r--r-- 1 root root 0 Jan 5 12:21 modules
> dr-xr-xr-x 2 root root 0 Jan 5 12:21 oss
> -r--r--r-- 1 root root 0 Jan 5 12:21 pcm
> dr-xr-xr-x 2 root root 0 Jan 5 12:21 seq
> -r--r--r-- 1 root root 0 Jan 5 12:21 timers
> -r--r--r-- 1 root root 0 Jan 5 12:21 version
>
> root@OpenWrt:/proc# lsusb
> Bus 001 Device 003: ID 0582:012a Roland Corp. UM-ONE
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> The kmod is the one here (search for sound in the list):
>
> http://downloads.openwrt.org/snapshots/trunk/ar71xx/generic/packages/base/
>
> Any idea on how I could get hw:1,0,0 as I have on my pc linux distro?
Loading snd_usb_audio fixed the issue.
--
Benjamin Henrion <bhenrion at ffii.org>
FFII Brussels - +32-484-566109 - +32-2-3500762
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