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Implement v2 models. Add test fixture. Make MIDI port normal to zero

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hirsch 2016-07-17 20:44:54 -04:00
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README.md
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@ -3,6 +3,30 @@
Allow Fender Mustang series guitar amplifiers to be controlled by MIDI
messages
# What's New
The command line parameter for MIDI controller port is now assumed to
start at 0 rather than 1 in order to match the way Linux ALSA
enumerates devices (see 'Run' below).
The program has been updated to run as a non-privileged daemon
process. You can still invoke it on the command line, but there will
be no output to the console and it no longer responds to keypress
input. Enter Ctrl-C (SIGINT) to exit.
I have added the first version of a runtime framework that starts and
stops the program automatically based on attached MIDI devices. This
seems to be working on a Beaglebone SBC, but has not been extensively
tested or documented yet. There is a small amount of customization
required to account for your specific amp model and MIDI controller
interface. Technically oriented users can probably work this out,
otherwise wait a bit until I can refine the packaging and arrange to
have the various pieces configured from a common setup file.
I'm currently working on implementation of amp and effects models
added in the Mustang v2 products and hope to have that checked in
soon.
# Introduction
The intent is to implement the published MIDI spec for the Fender
@ -106,12 +130,28 @@ Both the amplifier and MIDI source should be connected first, then:
```
$ mustang_midi midi_port# midi_listen_channel#
```
NOTE: RPi and BBG are a bit fussy about enumeration of new USB
NOTE1: I'm not sure about other platforms, but on Linux the MIDI
port number is equivalent to the ALSA card index. I had originally
treated port as 1..n, but since ALSA (and JACK? Not sure..) starts at
0, this has now been changed. You can find the card index for your
controller by connecting it to the computer and examining the
pseudo-file, e.g.:
$ cat /proc/asound/cards
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7530000 irq 30
1 [Interface ]: USB-Audio - USB MS1x1 MIDI Interface
M-Audio USB MS1x1 MIDI Interface at usb-0000:00:14.0-1, full speed
To accept MIDI messages from devices behind the M-Audio interface you
would now specify '1' as the MIDI port value.
NOTE2: RPi and BBG are a bit fussy about enumeration of new USB
devices. If you are not getting proper communication, quit the program
and try replugging both the Fender amp and MIDI controller **after**
those devices are powered up.
NOTE2: I've had success using a passive USB hub with the single USB on
NOTE3: I've had success using a passive USB hub with the single USB on
the BBG, but YMMV since most USB<->5Pin MIDI converters draw some
degree of bus power. A powered hub might be necessary in some
situations.