libopencm3-examples

Files

Piotr Esden-Tempski a0d379f460 [stm32f429i-discovery] Added usbmidi example.

This board connects the USB HS interface to the micro usb connector as
opposed to the USB FS interface on the stm32f4-discovery board. This is
why we are using different pins, different periph and different driver.
At the end it should(TM) behave the same as the HS interface implements
FS too.

2015-01-14 16:50:44 -08:00

Makefile

[stm32f429i-discovery] Added usbmidi example.

2015-01-14 16:50:44 -08:00

README

[stm32f429i-discovery] Added usbmidi example.

2015-01-14 16:50:44 -08:00

usbmidi.c

[stm32f429i-discovery] Added usbmidi example.

2015-01-14 16:50:44 -08:00

README

------------------------------------------------------------------------------
README
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This example implements a USB MIDI device to demonstrate the use of the
USB device stack. It implements the device configuration found in Appendix
B of the Universal Serial Bus Device Class Definition for MIDI Devices.

The 'USER' button sends note on/note off messages.

The board will also react to identity request (or any other data sent to
the board) by transmitting an identity message in reply.

Board connections:
------------------

  CN6	(USB_OTG_HS)	USB acting as device, connect to computer

Testing
-------

To list midi devices, which should include this demo device

    $ amidi -l
    Dir Device    Name
    IO  hw:2,0,0  MIDI demo MIDI 1
    $

To record events, while pushing the user button

    $ amidi -d -p hw:2,0,0
    
    90 3C 40   -- key down
    80 3C 40   -- key up
    90 3C 40
    80 3C 40^C
    12 bytes read
    $

To query the system identity, note this dump matches sysex_identity[] in the
source.

    $ amidi -d -p hw:2,0,0 -s Sysexdump.syx
    
    F0 7E 00 7D 66 66 51 19 00 00 01 00 F7
    ^C
    13 bytes read
    $