Demos/BluetoothHost/BluetoothHost.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 /*
  32         Bluetooth Dongle host demo application.
  33
  34         ** NOT CURRENTLY FUNCTIONAL - DO NOT USE **
  35 */
  36
  37 /*
  38         USB Mode:           Host
  39         USB Class:          Bluetooth USB Transport Class
  40         USB Subclass:       Bluetooth HCI USB Transport
  41         Relevant Standards: Bluetooth 2.0 Standard
  42                             Bluetooth 2.0 HCI USB Transport Layer Addendum
  43                                                 Bluetooth Assigned Numbers (Baseband)
  44         Usable Speeds:      Full Speed Mode
  45 */
  46
  47 #include "BluetoothHost.h"
  48
  49 /* Project Tags, for reading out using the ButtLoad project */
  50 BUTTLOADTAG(ProjName,    "LUFA BT Host App");
  51 BUTTLOADTAG(BuildTime,   __TIME__);
  52 BUTTLOADTAG(BuildDate,   __DATE__);
  53 BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);
  54
  55 /* Scheduler Task List */
  56 TASK_LIST
  57 {
  58         { Task: USB_USBTask          ,   TaskStatus: TASK_STOP },
  59         { Task: USB_Bluetooth_Host   ,   TaskStatus: TASK_STOP },
  60         { Task: Bluetooth_Task       ,   TaskStatus: TASK_STOP },
  61 };
  62
  63 Bluetooth_Device_t Bluetooth_DeviceConfiguration =
  64         {
  65                 Class:   (DEVICE_CLASS_SERVICE_CAPTURING | DEVICE_CLASS_MAJOR_COMPUTER | DEVICE_CLASS_MINOR_COMPUTER_PALM),
  66                 PINCode: "0000",
  67                 Name:    "LUFA Bluetooth Demo"
  68         };
  69
  70
  71 int main(void)
  72 {
  73         /* Disable watchdog if enabled by bootloader/fuses */
  74         MCUSR &= ~(1 << WDRF);
  75         wdt_disable();
  76
  77         /* Disable Clock Division */
  78         SetSystemClockPrescaler(0);
  79
  80         /* Hardware Initialization */
  81         SerialStream_Init(9600, false);
  82         LEDs_Init();
  83
  84         /* Indicate USB not ready */
  85         UpdateStatus(Status_USBNotReady);
  86
  87         /* Startup message */
  88         puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
  89                "Bluetooth Host Demo running.\r\n" ESC_INVERSE_OFF));
  90
  91         /* Initialize Scheduler so that it can be used */
  92         Scheduler_Init();
  93
  94         /* Initialize USB Subsystem */
  95         USB_Init();
  96
  97         /* Scheduling routine never returns, so put this last in the main function */
  98         Scheduler_Start();
  99 }
 100
 101 EVENT_HANDLER(USB_DeviceAttached)
 102 {
 103         puts_P(PSTR("Device Attached.\r\n"));
 104         UpdateStatus(Status_USBEnumerating);
 105
 106         /* Start USB management task to enumerate the device */
 107         Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
 108 }
 109
 110 EVENT_HANDLER(USB_DeviceUnattached)
 111 {
 112         /* Stop USB management and Bluetooth tasks */
 113         Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
 114         Scheduler_SetTaskMode(USB_Bluetooth_Host, TASK_STOP);
 115         Scheduler_SetTaskMode(Bluetooth_Task, TASK_STOP);
 116
 117         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 118         UpdateStatus(Status_USBNotReady);
 119 }
 120
 121 EVENT_HANDLER(USB_DeviceEnumerationComplete)
 122 {
 123         /* Once device is fully enumerated, start the Bluetooth Host task */
 124         Scheduler_SetTaskMode(USB_Bluetooth_Host, TASK_RUN);
 125         Scheduler_SetTaskMode(Bluetooth_Task, TASK_RUN);
 126
 127         UpdateStatus(Status_USBReady);
 128 }
 129
 130 EVENT_HANDLER(USB_HostError)
 131 {
 132         USB_ShutDown();
 133
 134         puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
 135         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 136
 137         UpdateStatus(Status_HardwareError);
 138         for(;;);
 139 }
 140
 141 EVENT_HANDLER(USB_DeviceEnumerationFailed)
 142 {
 143         puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
 144         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 145         printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
 146
 147         UpdateStatus(Status_EnumerationError);
 148 }
 149
 150 TASK(USB_Bluetooth_Host)
 151 {
 152         uint8_t ErrorCode;
 153
 154         switch (USB_HostState)
 155         {
 156                 case HOST_STATE_Addressed:
 157                         puts_P(PSTR("Getting Device Data.\r\n"));
 158
 159                         /* Get and process the configuration descriptor data */
 160                         if ((ErrorCode = ProcessDeviceDescriptor()) != SuccessfulDeviceRead)
 161                         {
 162                                 if (ErrorCode == ControlErrorDuringDeviceRead)
 163                                   puts_P(PSTR("Control Error (Get Device).\r\n"));
 164                                 else
 165                                   puts_P(PSTR("Invalid Device.\r\n"));
 166
 167                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 168
 169                                 /* Indicate error via status LEDs */
 170                                 LEDs_SetAllLEDs(LEDS_LED1);
 171
 172                                 /* Wait until USB device disconnected */
 173                                 while (USB_IsConnected);
 174                                 break;
 175                         }
 176
 177                         puts_P(PSTR("Bluetooth Dongle Detected.\r\n"));
 178
 179                         /* Standard request to set the device configuration to configuration 1 */
 180                         USB_HostRequest = (USB_Host_Request_Header_t)
 181                                 {
 182                                         bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
 183                                         bRequest:      REQ_SetConfiguration,
 184                                         wValue:        1,
 185                                         wIndex:        0,
 186                                         wLength:       0,
 187                                 };
 188
 189                         /* Send the request, display error and wait for device detatch if request fails */
 190                         if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
 191                         {
 192                                 puts_P(PSTR("Control Error (Set Configuration).\r\n"));
 193                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 194
 195                                 /* Indicate error via status LEDs */
 196                                 LEDs_SetAllLEDs(LEDS_LED1);
 197
 198                                 /* Wait until USB device disconnected */
 199                                 while (USB_IsConnected);
 200                                 break;
 201                         }
 202
 203                         USB_HostState = HOST_STATE_Configured;
 204                         break;
 205                 case HOST_STATE_Configured:
 206                         puts_P(PSTR("Getting Config Data.\r\n"));
 207
 208                         /* Get and process the configuration descriptor data */
 209                         if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
 210                         {
 211                                 if (ErrorCode == ControlErrorDuringConfigRead)
 212                                   puts_P(PSTR("Control Error (Get Configuration).\r\n"));
 213                                 else
 214                                   puts_P(PSTR("Invalid Device.\r\n"));
 215
 216                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 217
 218                                 /* Indicate error via status LEDs */
 219                                 LEDs_SetAllLEDs(LEDS_LED1);
 220
 221                                 /* Wait until USB device disconnected */
 222                                 while (USB_IsConnected);
 223                                 break;
 224                         }
 225
 226                         puts_P(PSTR("Bluetooth Dongle Enumerated.\r\n"));
 227
 228                         USB_HostState = HOST_STATE_Ready;
 229                         break;
 230                 case HOST_STATE_Ready:
 231                         if (Bluetooth_HCIProcessingState != Bluetooth_ProcessEvents)
 232                         {
 233                                 UpdateStatus(Status_BluetoothBusy);
 234                         }
 235                         else
 236                         {
 237                                 if (Bluetooth_Connection.IsConnected)
 238                                   UpdateStatus(Status_BluetoothConnected);
 239                                 else
 240                                   UpdateStatus(Status_USBReady);
 241                         }
 242
 243                         break;
 244         }
 245 }
 246
 247 /** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
 248  *  log to a serial port, or anything else that is suitable for status updates.
 249  *
 250  *  \param CurrentStatus  Current status of the system, from the MouseHostViaInt_StatusCodes_t enum
 251  */
 252 void UpdateStatus(uint8_t CurrentStatus)
 253 {
 254         uint8_t LEDMask = LEDS_NO_LEDS;
 255
 256         /* Set the LED mask to the appropriate LED mask based on the given status code */
 257         switch (CurrentStatus)
 258         {
 259                 case Status_USBNotReady:
 260                         LEDMask = (LEDS_LED1);
 261                         break;
 262                 case Status_USBEnumerating:
 263                         LEDMask = (LEDS_LED1 | LEDS_LED2);
 264                         break;
 265                 case Status_USBReady:
 266                         LEDMask = (LEDS_LED2);
 267                         break;
 268                 case Status_EnumerationError:
 269                 case Status_HardwareError:
 270                         LEDMask = (LEDS_LED1 | LEDS_LED3);
 271                         break;
 272                 case Status_BluetoothConnected:
 273                         LEDMask = (LEDS_LED2 | LEDS_LED4);
 274                         break;
 275                 case Status_BluetoothBusy:
 276                         LEDMask = (LEDS_LED2 | LEDS_LED3 | LEDS_LED4);
 277                         break;
 278         }
 279
 280         /* Set the board LEDs to the new LED mask */
 281         LEDs_SetAllLEDs(LEDMask);
 282 }