USB MIDI 2.0 Class device API

USB MIDI 2.0 class device API . More...

Data Structures
struct	usbd_midi_ops
	MIDI2 application event handlers. More...

Functions
int	usbd_midi_send (const struct device *dev, const struct midi_ump ump)
	Send a Universal MIDI Packet to the host.
void	usbd_midi_set_ops (const struct device *dev, const struct usbd_midi_ops *ops)
	Set the application event handlers on a USB MIDI device.

Detailed Description

USB MIDI 2.0 class device API .

Since

4.1

Version

0.1.0

See also

midi20: "Universal Serial Bus Device Class Definition for MIDI Devices" Document Release 2.0 (May 5, 2020)

Function Documentation

usbd_midi_send()

int usbd_midi_send	(	const struct device *	dev,
		const struct midi_ump	ump )

#include <zephyr/usb/class/usbd_midi2.h>

Send a Universal MIDI Packet to the host.

Parameters

[in]	dev	The MIDI2 device
[in]	ump	The packet to send, in Universal MIDI Packet format

Returns

0 on success, all other values should be treated as error -EIO if USB MIDI 2.0 is not enabled by the host -ENOBUFS if there is no space in the TX buffer

usbd_midi_set_ops()

void usbd_midi_set_ops	(	const struct device *	dev,
		const struct usbd_midi_ops *	ops )

#include <zephyr/usb/class/usbd_midi2.h>

Set the application event handlers on a USB MIDI device.

Parameters

[in]	dev	The MIDI2 device
[in]	ops	The event handlers. Pass NULL to reset all callbacks