diff options
Diffstat (limited to 'bootloader/midi/examples/lufa_midi/midi_usb.c')
| -rw-r--r-- | bootloader/midi/examples/lufa_midi/midi_usb.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/bootloader/midi/examples/lufa_midi/midi_usb.c b/bootloader/midi/examples/lufa_midi/midi_usb.c new file mode 100644 index 0000000..4a045c8 --- /dev/null +++ b/bootloader/midi/examples/lufa_midi/midi_usb.c @@ -0,0 +1,161 @@ +/*
+ * Modified by Alex Norman (x37v.info) from Dean Camera's MIDI LUFA demo
+ * Original Copyright below
+ */
+
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+ */
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+ */
+
+#include "midi_usb.h"
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/power.h>
+#include <avr/interrupt.h>
+#include <stdbool.h>
+
+#include "Descriptors.h"
+
+#include <LUFA/Version.h>
+#include <LUFA/Drivers/USB/USB.h>
+
+/* Function Prototypes: */
+void SetupHardware(void);
+
+void EVENT_USB_Device_Connect(void);
+void EVENT_USB_Device_Disconnect(void);
+void EVENT_USB_Device_ConfigurationChanged(void);
+void EVENT_USB_Device_ControlRequest(void);
+
+/** LUFA MIDI Class driver interface configuration and state information. This structure is
+ * passed to all MIDI Class driver functions, so that multiple instances of the same class
+ * within a device can be differentiated from one another.
+ */
+
+USB_ClassInfo_MIDI_Device_t USB_MIDI_Interface =
+{
+ .Config =
+ {
+ .StreamingInterfaceNumber = 1,
+
+ .DataINEndpointNumber = MIDI_STREAM_IN_EPNUM,
+ .DataINEndpointSize = MIDI_STREAM_EPSIZE,
+ .DataINEndpointDoubleBank = false,
+
+ .DataOUTEndpointNumber = MIDI_STREAM_OUT_EPNUM,
+ .DataOUTEndpointSize = MIDI_STREAM_EPSIZE,
+ .DataOUTEndpointDoubleBank = false,
+ },
+ };
+
+//we disregard cnt because we assume all other bytes are zero and we always send 4 bytes
+void usb_send_func(MidiDevice * device, uint8_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2) {
+ MIDI_EventPacket_t event;
+ event.CableNumber = 0;
+ event.Command = byte0 >> 4;
+ event.Data1 = byte0;
+ event.Data2 = byte1;
+ event.Data3 = byte2;
+
+ MIDI_Device_SendEventPacket(&USB_MIDI_Interface, &event);
+ MIDI_Device_Flush(&USB_MIDI_Interface);
+ MIDI_Device_USBTask(&USB_MIDI_Interface);
+ USB_USBTask();
+}
+
+void usb_get_midi(MidiDevice * device) {
+ /* Select the MIDI OUT stream */
+ Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM);
+
+ MIDI_EventPacket_t event;
+ while (MIDI_Device_ReceiveEventPacket(&USB_MIDI_Interface, &event)) {
+
+ midi_packet_length_t length = midi_packet_length(event.Data1);
+
+ //pass the data to the device input function
+ //not dealing with sysex yet
+ if (length != UNDEFINED)
+ midi_device_input(device, length, event.Data1, event.Data2, event.Data3);
+
+ }
+ MIDI_Device_USBTask(&USB_MIDI_Interface);
+ USB_USBTask();
+}
+
+void midi_usb_init(MidiDevice * device){
+ midi_device_init(device);
+ midi_device_set_send_func(device, usb_send_func);
+ midi_device_set_pre_input_process_func(device, usb_get_midi);
+
+ SetupHardware();
+ sei();
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ USB_Init();
+}
+
+/** Event handler for the library USB Connection event. */
+void EVENT_USB_Device_Connect(void)
+{
+ //set some LED?
+}
+
+/** Event handler for the library USB Disconnection event. */
+void EVENT_USB_Device_Disconnect(void)
+{
+ //set some LED?
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&USB_MIDI_Interface);
+ //set some LED?
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ MIDI_Device_ProcessControlRequest(&USB_MIDI_Interface);
+}
+
|