Demos/Host/ClassDriver/MIDIHost/MIDIHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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                                 .DataINPipeDoubleBank   = false,
  49
  50                                 .DataOUTPipeNumber      = 2,
  51                                 .DataOUTPipeDoubleBank  = false,
  52                         },
  53         };
  54
  55
  56 /** Main program entry point. This routine configures the hardware required by the application, then
  57  *  enters a loop to run the application tasks in sequence.
  58  */
  59 int main(void)
  60 {
  61         SetupHardware();
  62
  63         puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
  64
  65         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  66         sei();
  67
  68         for (;;)
  69         {
  70                 switch (USB_HostState)
  71                 {
  72                         case HOST_STATE_Addressed:
  73                                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  74
  75                                 uint16_t ConfigDescriptorSize;
  76                                 uint8_t  ConfigDescriptorData[512];
  77
  78                                 if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
  79                                                                        sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
  80                                 {
  81                                         puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
  82                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  83                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  84                                         break;
  85                                 }
  86
  87                                 if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
  88                                                              ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
  89                                 {
  90                                         puts_P(PSTR("Attached Device Not a Valid MIDI Class Device.\r\n"));
  91                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  92                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  93                                         break;
  94                                 }
  95
  96                                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  97                                 {
  98                                         puts_P(PSTR("Error Setting Device Configuration.\r\n"));
  99                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 100                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 101                                         break;
 102                                 }
 103
 104                                 puts_P(PSTR("MIDI Device Enumerated.\r\n"));
 105                                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 106                                 USB_HostState = HOST_STATE_Configured;
 107                                 break;
 108                         case HOST_STATE_Configured:
 109                                 CheckJoystickMovement();
 110
 111                                 MIDI_EventPacket_t MIDIEvent;
 112                                 while (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
 113                                 {
 114                                         bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
 115                                         bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
 116
 117                                         if (NoteOnEvent || NoteOffEvent)
 118                                         {
 119                                                 printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
 120                                                                                                                                                                                        ((MIDIEvent.Data1 & 0x0F) + 1),
 121                                                                                                                                                                                        MIDIEvent.Data2, MIDIEvent.Data3);
 122                                         }
 123                                 }
 124
 125                                 break;
 126                 }
 127
 128                 MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
 129                 USB_USBTask();
 130         }
 131 }
 132
 133 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 134 void SetupHardware(void)
 135 {
 136         /* Disable watchdog if enabled by bootloader/fuses */
 137         MCUSR &= ~(1 << WDRF);
 138         wdt_disable();
 139
 140         /* Disable clock division */
 141         clock_prescale_set(clock_div_1);
 142
 143         /* Hardware Initialization */
 144         SerialStream_Init(9600, false);
 145         LEDs_Init();
 146         Buttons_Init();
 147         Joystick_Init();
 148         USB_Init();
 149 }
 150
 151 void CheckJoystickMovement(void)
 152 {
 153         static uint8_t PrevJoystickStatus;
 154
 155         uint8_t MIDICommand = 0;
 156         uint8_t MIDIPitch;
 157
 158         /* Get current joystick mask, XOR with previous to detect joystick changes */
 159         uint8_t JoystickStatus  = Joystick_GetStatus();
 160         uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
 161
 162         /* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
 163         uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
 164
 165         if (JoystickChanges & JOY_LEFT)
 166         {
 167                 MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 168                 MIDIPitch   = 0x3C;
 169         }
 170
 171         if (JoystickChanges & JOY_UP)
 172         {
 173                 MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 174                 MIDIPitch   = 0x3D;
 175         }
 176
 177         if (JoystickChanges & JOY_RIGHT)
 178         {
 179                 MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 180                 MIDIPitch   = 0x3E;
 181         }
 182
 183         if (JoystickChanges & JOY_DOWN)
 184         {
 185                 MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 186                 MIDIPitch   = 0x3F;
 187         }
 188
 189         if (JoystickChanges & JOY_PRESS)
 190         {
 191                 MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 192                 MIDIPitch   = 0x3B;
 193         }
 194
 195         if (MIDICommand)
 196         {
 197                 MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
 198                         {
 199                                 .CableNumber = 0,
 200                                 .Command     = (MIDICommand >> 4),
 201
 202                                 .Data1       = MIDICommand | Channel,
 203                                 .Data2       = MIDIPitch,
 204                                 .Data3       = MIDI_STANDARD_VELOCITY,
 205                         };
 206
 207                 MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
 208                 MIDI_Host_Flush(&Keyboard_MIDI_Interface);
 209         }
 210
 211         PrevJoystickStatus = JoystickStatus;
 212 }
 213
 214 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 215  *  starts the library USB task to begin the enumeration and USB management process.
 216  */
 217 void EVENT_USB_Host_DeviceAttached(void)
 218 {
 219         puts_P(PSTR("Device Attached.\r\n"));
 220         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 221 }
 222
 223 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 224  *  stops the library USB task management process.
 225  */
 226 void EVENT_USB_Host_DeviceUnattached(void)
 227 {
 228         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 229         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 230 }
 231
 232 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 233  *  enumerated by the host and is now ready to be used by the application.
 234  */
 235 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 236 {
 237         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 238 }
 239
 240 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 241 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 242 {
 243         USB_ShutDown();
 244
 245         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 246                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 247
 248         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 249         for(;;);
 250 }
 251
 252 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 253  *  enumerating an attached USB device.
 254  */
 255 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
 256                                             const uint8_t SubErrorCode)
 257 {
 258         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 259                                  " -- Error Code %d\r\n"
 260                                  " -- Sub Error Code %d\r\n"
 261                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 262
 263         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 264 }
 265