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                                 USB_HostState = HOST_STATE_Configured;
 105                                 break;
 106                         case HOST_STATE_Configured:
 107                                 CheckJoystickMovement();
 108
 109                                 MIDI_EventPacket_t MIDIEvent;
 110                                 if (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
 111                                 {
 112                                         bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
 113                                         bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
 114
 115                                         if (NoteOnEvent || NoteOffEvent)
 116                                         {
 117                                                 printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
 118                                                                                                                                                                                        ((MIDIEvent.Data1 & 0x0F) + 1),
 119                                                                                                                                                                                        MIDIEvent.Data2, MIDIEvent.Data3);
 120                                         }
 121                                 }
 122
 123                                 break;
 124                 }
 125
 126                 MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
 127                 USB_USBTask();
 128         }
 129 }
 130
 131 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 132 void SetupHardware(void)
 133 {
 134         /* Disable watchdog if enabled by bootloader/fuses */
 135         MCUSR &= ~(1 << WDRF);
 136         wdt_disable();
 137
 138         /* Disable clock division */
 139         clock_prescale_set(clock_div_1);
 140
 141         /* Hardware Initialization */
 142         SerialStream_Init(9600, false);
 143         LEDs_Init();
 144         Buttons_Init();
 145         Joystick_Init();
 146         USB_Init();
 147 }
 148
 149 void CheckJoystickMovement(void)
 150 {
 151         static uint8_t PrevJoystickStatus;
 152
 153         uint8_t MIDICommand = 0;
 154         uint8_t MIDIPitch;
 155
 156         /* Get current joystick mask, XOR with previous to detect joystick changes */
 157         uint8_t JoystickStatus  = Joystick_GetStatus();
 158         uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
 159
 160         /* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
 161         uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
 162
 163         if (JoystickChanges & JOY_LEFT)
 164         {
 165                 MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 166                 MIDIPitch   = 0x3C;
 167         }
 168
 169         if (JoystickChanges & JOY_UP)
 170         {
 171                 MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 172                 MIDIPitch   = 0x3D;
 173         }
 174
 175         if (JoystickChanges & JOY_RIGHT)
 176         {
 177                 MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 178                 MIDIPitch   = 0x3E;
 179         }
 180
 181         if (JoystickChanges & JOY_DOWN)
 182         {
 183                 MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 184                 MIDIPitch   = 0x3F;
 185         }
 186
 187         if (JoystickChanges & JOY_PRESS)
 188         {
 189                 MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
 190                 MIDIPitch   = 0x3B;
 191         }
 192
 193         if (MIDICommand)
 194         {
 195                 MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
 196                         {
 197                                 .CableNumber = 0,
 198                                 .Command     = (MIDICommand >> 4),
 199
 200                                 .Data1       = MIDICommand | Channel,
 201                                 .Data2       = MIDIPitch,
 202                                 .Data3       = MIDI_STANDARD_VELOCITY,
 203                         };
 204
 205                 MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
 206                 MIDI_Host_Flush(&Keyboard_MIDI_Interface);
 207         }
 208
 209         PrevJoystickStatus = JoystickStatus;
 210 }
 211
 212 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 213  *  starts the library USB task to begin the enumeration and USB management process.
 214  */
 215 void EVENT_USB_Host_DeviceAttached(void)
 216 {
 217         puts_P(PSTR("Device Attached.\r\n"));
 218         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 219 }
 220
 221 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 222  *  stops the library USB task management process.
 223  */
 224 void EVENT_USB_Host_DeviceUnattached(void)
 225 {
 226         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 227         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 228 }
 229
 230 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 231  *  enumerated by the host and is now ready to be used by the application.
 232  */
 233 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 234 {
 235         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 236 }
 237
 238 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 239 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 240 {
 241         USB_ShutDown();
 242
 243         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 244                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 245
 246         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 247         for(;;);
 248 }
 249
 250 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 251  *  enumerating an attached USB device.
 252  */
 253 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 254 {
 255         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 256                                  " -- Error Code %d\r\n"
 257                                  " -- Sub Error Code %d\r\n"
 258                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 259
 260         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 261 }