Demos/Host/ClassDriver/MIDIHost/MIDIHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Main source file for the MIDIHost demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "MIDIHost.h"
  38
  39 /** LUFA MIDI Class driver interface configuration and state information. This structure is
  40  *  passed to all MIDI Class driver functions, so that multiple instances of the same class
  41  *  within a device can be differentiated from one another.
  42  */
  43 USB_ClassInfo_MIDI_Host_t Keyboard_MIDI_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .DataINPipeNumber       = 1,
  48                                 .DataOUTPipeNumber      = 2,
  49                         },
  50         };
  51
  52
  53 /** Main program entry point. This routine configures the hardware required by the application, then
  54  *  enters a loop to run the application tasks in sequence.
  55  */
  56 int main(void)
  57 {
  58         SetupHardware();
  59
  60         puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
  61
  62         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  63
  64         for (;;)
  65         {
  66                 switch (USB_HostState)
  67                 {
  68                         case HOST_STATE_Addressed:
  69                                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  70
  71                                 uint16_t ConfigDescriptorSize;
  72                                 uint8_t  ConfigDescriptorData[512];
  73
  74                                 if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
  75                                                                   sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
  76                                 {
  77                                         printf("Error Retrieving Configuration Descriptor.\r\n");
  78                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  79                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  80                                         break;
  81                                 }
  82
  83                                 if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
  84                                                              ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
  85                                 {
  86                                         printf("Attached Device Not a Valid MIDI Class Device.\r\n");
  87                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  88                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  89                                         break;
  90                                 }
  91
  92                                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  93                                 {
  94                                         printf("Error Setting Device Configuration.\r\n");
  95                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  96                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  97                                         break;
  98                                 }
  99
 100                                 printf("MIDI Device Enumerated.\r\n");
 101                                 USB_HostState = HOST_STATE_Configured;
 102                                 break;
 103                         case HOST_STATE_Configured:
 104                                 CheckJoystickMovement();
 105
 106                                 MIDI_EventPacket_t MIDIEvent;
 107                                 if (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
 108                                 {
 109                                         bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
 110                                         bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
 111
 112                                         if (NoteOnEvent || NoteOffEvent)
 113                                         {
 114                                                 printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d"), NoteOnEvent ? "On" : "Off",
 115                                                                                                                                                                                    ((MIDIEvent.Data1 & 0x0F) + 1),
 116                                                                                                                                                                                    MIDIEvent.Data2, MIDIEvent.Data3);
 117                                         }
 118                                 }
 119
 120                                 break;
 121                 }
 122
 123                 MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
 124                 USB_USBTask();
 125         }
 126 }
 127
 128 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 129 void SetupHardware(void)
 130 {
 131         /* Disable watchdog if enabled by bootloader/fuses */
 132         MCUSR &= ~(1 << WDRF);
 133         wdt_disable();
 134
 135         /* Disable clock division */
 136         clock_prescale_set(clock_div_1);
 137
 138         /* Hardware Initialization */
 139         SerialStream_Init(9600, false);
 140         LEDs_Init();
 141         Buttons_Init();
 142         Joystick_Init();
 143         USB_Init();
 144 }
 145
 146 void CheckJoystickMovement(void)
 147 {
 148         static uint8_t PrevJoystickStatus;
 149
 150         uint8_t MIDICommand = 0;
 151         uint8_t MIDIPitch;
 152
 153         /* Get current joystick mask, XOR with previous to detect joystick changes */
 154         uint8_t JoystickStatus  = Joystick_GetStatus();
 155         uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
 156
 157         /* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
 158         uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
 159
 160         if (JoystickChanges & JOY_LEFT)
 161         {
 162                 MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 163                 MIDIPitch   = 0x3C;
 164         }
 165
 166         if (JoystickChanges & JOY_UP)
 167         {
 168                 MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 169                 MIDIPitch   = 0x3D;
 170         }
 171
 172         if (JoystickChanges & JOY_RIGHT)
 173         {
 174                 MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 175                 MIDIPitch   = 0x3E;
 176         }
 177
 178         if (JoystickChanges & JOY_DOWN)
 179         {
 180                 MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 181                 MIDIPitch   = 0x3F;
 182         }
 183
 184         if (JoystickChanges & JOY_PRESS)
 185         {
 186                 MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 187                 MIDIPitch   = 0x3B;
 188         }
 189
 190         if (MIDICommand)
 191         {
 192                 MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
 193                         {
 194                                 .CableNumber = 0,
 195                                 .Command     = (MIDICommand >> 4),
 196
 197                                 .Data1       = MIDICommand | Channel,
 198                                 .Data2       = MIDIPitch,
 199                                 .Data3       = MIDI_STANDARD_VELOCITY,
 200                         };
 201
 202                 MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
 203         }
 204
 205         PrevJoystickStatus = JoystickStatus;
 206 }
 207
 208 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 209  *  starts the library USB task to begin the enumeration and USB management process.
 210  */
 211 void EVENT_USB_Host_DeviceAttached(void)
 212 {
 213         puts_P(PSTR("Device Attached.\r\n"));
 214         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 215 }
 216
 217 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 218  *  stops the library USB task management process.
 219  */
 220 void EVENT_USB_Host_DeviceUnattached(void)
 221 {
 222         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 223         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 224 }
 225
 226 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 227  *  enumerated by the host and is now ready to be used by the application.
 228  */
 229 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 230 {
 231         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 232 }
 233
 234 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 235 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 236 {
 237         USB_ShutDown();
 238
 239         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 240                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 241
 242         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 243         for(;;);
 244 }
 245
 246 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 247  *  enumerating an attached USB device.
 248  */
 249 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 250 {
 251         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 252                                  " -- Error Code %d\r\n"
 253                                  " -- Sub Error Code %d\r\n"
 254                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 255
 256         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 257 }