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.fourwalledcubicle.com
   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
  67         for (;;)
  68         {
  69                 switch (USB_HostState)
  70                 {
  71                         case HOST_STATE_Addressed:
  72                                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  73
  74                                 uint16_t ConfigDescriptorSize;
  75                                 uint8_t  ConfigDescriptorData[512];
  76
  77                                 if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
  78                                                                        sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
  79                                 {
  80                                         printf("Error Retrieving Configuration Descriptor.\r\n");
  81                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  82                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  83                                         break;
  84                                 }
  85
  86                                 if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
  87                                                              ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
  88                                 {
  89                                         printf("Attached Device Not a Valid MIDI Class Device.\r\n");
  90                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  91                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  92                                         break;
  93                                 }
  94
  95                                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  96                                 {
  97                                         printf("Error Setting Device Configuration.\r\n");
  98                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  99                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 100                                         break;
 101                                 }
 102
 103                                 printf("MIDI Device Enumerated.\r\n");
 104                                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 105                                 USB_HostState = HOST_STATE_Configured;
 106                                 break;
 107                         case HOST_STATE_Configured:
 108                                 CheckJoystickMovement();
 109
 110                                 MIDI_EventPacket_t MIDIEvent;
 111                                 if (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
 112                                 {
 113                                         bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
 114                                         bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
 115
 116                                         if (NoteOnEvent || NoteOffEvent)
 117                                         {
 118                                                 printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
 119                                                                                                                                                                                        ((MIDIEvent.Data1 & 0x0F) + 1),
 120                                                                                                                                                                                        MIDIEvent.Data2, MIDIEvent.Data3);
 121                                         }
 122                                 }
 123
 124                                 break;
 125                 }
 126
 127                 MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
 128                 USB_USBTask();
 129         }
 130 }
 131
 132 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 133 void SetupHardware(void)
 134 {
 135         /* Disable watchdog if enabled by bootloader/fuses */
 136         MCUSR &= ~(1 << WDRF);
 137         wdt_disable();
 138
 139         /* Disable clock division */
 140         clock_prescale_set(clock_div_1);
 141
 142         /* Hardware Initialization */
 143         SerialStream_Init(9600, false);
 144         LEDs_Init();
 145         Buttons_Init();
 146         Joystick_Init();
 147         USB_Init();
 148 }
 149
 150 void CheckJoystickMovement(void)
 151 {
 152         static uint8_t PrevJoystickStatus;
 153
 154         uint8_t MIDICommand = 0;
 155         uint8_t MIDIPitch;
 156
 157         /* Get current joystick mask, XOR with previous to detect joystick changes */
 158         uint8_t JoystickStatus  = Joystick_GetStatus();
 159         uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
 160
 161         /* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
 162         uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
 163
 164         if (JoystickChanges & JOY_LEFT)
 165         {
 166                 MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 167                 MIDIPitch   = 0x3C;
 168         }
 169
 170         if (JoystickChanges & JOY_UP)
 171         {
 172                 MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 173                 MIDIPitch   = 0x3D;
 174         }
 175
 176         if (JoystickChanges & JOY_RIGHT)
 177         {
 178                 MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 179                 MIDIPitch   = 0x3E;
 180         }
 181
 182         if (JoystickChanges & JOY_DOWN)
 183         {
 184                 MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 185                 MIDIPitch   = 0x3F;
 186         }
 187
 188         if (JoystickChanges & JOY_PRESS)
 189         {
 190                 MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 191                 MIDIPitch   = 0x3B;
 192         }
 193
 194         if (MIDICommand)
 195         {
 196                 MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
 197                         {
 198                                 .CableNumber = 0,
 199                                 .Command     = (MIDICommand >> 4),
 200
 201                                 .Data1       = MIDICommand | Channel,
 202                                 .Data2       = MIDIPitch,
 203                                 .Data3       = MIDI_STANDARD_VELOCITY,
 204                         };
 205
 206                 MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
 207                 MIDI_Host_Flush(&Keyboard_MIDI_Interface);
 208         }
 209
 210         PrevJoystickStatus = JoystickStatus;
 211 }
 212
 213 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 214  *  starts the library USB task to begin the enumeration and USB management process.
 215  */
 216 void EVENT_USB_Host_DeviceAttached(void)
 217 {
 218         puts_P(PSTR("Device Attached.\r\n"));
 219         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 220 }
 221
 222 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 223  *  stops the library USB task management process.
 224  */
 225 void EVENT_USB_Host_DeviceUnattached(void)
 226 {
 227         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 228         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 229 }
 230
 231 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 232  *  enumerated by the host and is now ready to be used by the application.
 233  */
 234 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 235 {
 236         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 237 }
 238
 239 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 240 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 241 {
 242         USB_ShutDown();
 243
 244         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 245                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 246
 247         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 248         for(;;);
 249 }
 250
 251 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 252  *  enumerating an attached USB device.
 253  */
 254 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 255 {
 256         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 257                                  " -- Error Code %d\r\n"
 258                                  " -- Sub Error Code %d\r\n"
 259                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 260
 261         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 262 }