Demos/Host/ClassDriver/StillImageHost/StillImageHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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 StillImageHost demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "StillImageHost.h"
  38
  39 /** LUFA Still Image Class driver interface configuration and state information. This structure is
  40  *  passed to all Still Image 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_SI_Host_t DigitalCamera_SI_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .DataINPipeNumber       = 1,
  48                                 .DataINPipeDoubleBank   = false,
  49
  50                                 .DataOUTPipeNumber      = 2,
  51                                 .DataOUTPipeDoubleBank  = false,
  52
  53                                 .EventsPipeNumber       = 3,
  54                                 .EventsPipeDoubleBank   = false,
  55                         },
  56         };
  57
  58
  59 /** Main program entry point. This routine configures the hardware required by the application, then
  60  *  enters a loop to run the application tasks in sequence.
  61  */
  62 int main(void)
  63 {
  64         SetupHardware();
  65
  66         puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
  67
  68         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  69         sei();
  70
  71         for (;;)
  72         {
  73                 StillImageHost_Task();
  74
  75                 SI_Host_USBTask(&DigitalCamera_SI_Interface);
  76                 USB_USBTask();
  77         }
  78 }
  79
  80 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  81 void SetupHardware(void)
  82 {
  83         /* Disable watchdog if enabled by bootloader/fuses */
  84         MCUSR &= ~(1 << WDRF);
  85         wdt_disable();
  86
  87         /* Disable clock division */
  88         clock_prescale_set(clock_div_1);
  89
  90         /* Hardware Initialization */
  91         Serial_Init(9600, false);
  92         LEDs_Init();
  93         USB_Init();
  94
  95         /* Create a stdio stream for the serial port for stdin and stdout */
  96         Serial_CreateStream(NULL);
  97 }
  98
  99 /** Task to manage an enumerated USB Still Image device once connected, to manage a
 100  *  new PIMA session in order to send commands to the attached device.
 101  */
 102 void StillImageHost_Task(void)
 103 {
 104         if (USB_HostState != HOST_STATE_Configured)
 105           return;
 106
 107         puts_P(PSTR("Opening Session...\r\n"));
 108
 109         if (SI_Host_OpenSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
 110         {
 111                 puts_P(PSTR("Could not open PIMA session.\r\n"));
 112                 USB_Host_SetDeviceConfiguration(0);
 113                 return;
 114         }
 115
 116         puts_P(PSTR("Turning off Device...\r\n"));
 117
 118         SI_Host_SendCommand(&DigitalCamera_SI_Interface, 0x1013, 0, NULL);
 119         if (SI_Host_ReceiveResponse(&DigitalCamera_SI_Interface))
 120         {
 121                 puts_P(PSTR("Could not turn off device.\r\n"));
 122                 USB_Host_SetDeviceConfiguration(0);
 123                 return;
 124         }
 125
 126         puts_P(PSTR("Device Off.\r\n"));
 127
 128         puts_P(PSTR("Closing Session...\r\n"));
 129
 130         if (SI_Host_CloseSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
 131         {
 132                 puts_P(PSTR("Could not close PIMA session.\r\n"));
 133                 USB_Host_SetDeviceConfiguration(0);
 134                 return;
 135         }
 136
 137         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 138         USB_Host_SetDeviceConfiguration(0);
 139 }
 140
 141 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 142  *  starts the library USB task to begin the enumeration and USB management process.
 143  */
 144 void EVENT_USB_Host_DeviceAttached(void)
 145 {
 146         puts_P(PSTR("Device Attached.\r\n"));
 147         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 148 }
 149
 150 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 151  *  stops the library USB task management process.
 152  */
 153 void EVENT_USB_Host_DeviceUnattached(void)
 154 {
 155         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 156         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 157 }
 158
 159 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 160  *  enumerated by the host and is now ready to be used by the application.
 161  */
 162 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 163 {
 164         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 165
 166         uint16_t ConfigDescriptorSize;
 167         uint8_t  ConfigDescriptorData[512];
 168
 169         if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
 170                                                sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
 171         {
 172                 puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
 173                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 174                 return;
 175         }
 176
 177         if (SI_Host_ConfigurePipes(&DigitalCamera_SI_Interface,
 178                                    ConfigDescriptorSize, ConfigDescriptorData) != SI_ENUMERROR_NoError)
 179         {
 180                 puts_P(PSTR("Attached Device Not a Valid Still Image Class Device.\r\n"));
 181                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 182                 return;
 183         }
 184
 185         if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
 186         {
 187                 puts_P(PSTR("Error Setting Device Configuration.\r\n"));
 188                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 189                 return;
 190         }
 191
 192         puts_P(PSTR("Still Image Device Enumerated.\r\n"));
 193         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 194 }
 195
 196 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 197 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 198 {
 199         USB_Disable();
 200
 201         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 202                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 203
 204         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 205         for(;;);
 206 }
 207
 208 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 209  *  enumerating an attached USB device.
 210  */
 211 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
 212                                             const uint8_t SubErrorCode)
 213 {
 214         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 215                                  " -- Error Code %d\r\n"
 216                                  " -- Sub Error Code %d\r\n"
 217                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 218
 219         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 220 }
 221