Demos/Host/ClassDriver/StillImageHost/StillImageHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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                                 .DataINPipe             =
  48                                         {
  49                                                 .Address        = (PIPE_DIR_IN  | 1),
  50                                                 .Banks          = 1,
  51                                         },
  52                                 .DataOUTPipe            =
  53                                         {
  54                                                 .Address        = (PIPE_DIR_OUT | 2),
  55                                                 .Banks          = 1,
  56                                         },
  57                                 .EventsPipe             =
  58                                         {
  59                                                 .Address        = (PIPE_DIR_IN  | 3),
  60                                                 .Banks          = 1,
  61                                         },
  62                         },
  63         };
  64
  65
  66 /** Main program entry point. This routine configures the hardware required by the application, then
  67  *  enters a loop to run the application tasks in sequence.
  68  */
  69 int main(void)
  70 {
  71         SetupHardware();
  72
  73         puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
  74
  75         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  76         sei();
  77
  78         for (;;)
  79         {
  80                 StillImageHost_Task();
  81
  82                 SI_Host_USBTask(&DigitalCamera_SI_Interface);
  83                 USB_USBTask();
  84         }
  85 }
  86
  87 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  88 void SetupHardware(void)
  89 {
  90         /* Disable watchdog if enabled by bootloader/fuses */
  91         MCUSR &= ~(1 << WDRF);
  92         wdt_disable();
  93
  94         /* Disable clock division */
  95         clock_prescale_set(clock_div_1);
  96
  97         /* Hardware Initialization */
  98         Serial_Init(9600, false);
  99         LEDs_Init();
 100         USB_Init();
 101
 102         /* Create a stdio stream for the serial port for stdin and stdout */
 103         Serial_CreateStream(NULL);
 104 }
 105
 106 /** Task to manage an enumerated USB Still Image device once connected, to manage a
 107  *  new PIMA session in order to send commands to the attached device.
 108  */
 109 void StillImageHost_Task(void)
 110 {
 111         if (USB_HostState != HOST_STATE_Configured)
 112           return;
 113
 114         puts_P(PSTR("Opening Session...\r\n"));
 115
 116         if (SI_Host_OpenSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
 117         {
 118                 puts_P(PSTR("Could not open PIMA session.\r\n"));
 119                 USB_Host_SetDeviceConfiguration(0);
 120                 return;
 121         }
 122
 123         puts_P(PSTR("Turning off Device...\r\n"));
 124
 125         SI_Host_SendCommand(&DigitalCamera_SI_Interface, 0x1013, 0, NULL);
 126         if (SI_Host_ReceiveResponse(&DigitalCamera_SI_Interface))
 127         {
 128                 puts_P(PSTR("Could not turn off device.\r\n"));
 129                 USB_Host_SetDeviceConfiguration(0);
 130                 return;
 131         }
 132
 133         puts_P(PSTR("Device Off.\r\n"));
 134
 135         puts_P(PSTR("Closing Session...\r\n"));
 136
 137         if (SI_Host_CloseSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
 138         {
 139                 puts_P(PSTR("Could not close PIMA session.\r\n"));
 140                 USB_Host_SetDeviceConfiguration(0);
 141                 return;
 142         }
 143
 144         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 145         USB_Host_SetDeviceConfiguration(0);
 146 }
 147
 148 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 149  *  starts the library USB task to begin the enumeration and USB management process.
 150  */
 151 void EVENT_USB_Host_DeviceAttached(void)
 152 {
 153         puts_P(PSTR("Device Attached.\r\n"));
 154         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 155 }
 156
 157 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 158  *  stops the library USB task management process.
 159  */
 160 void EVENT_USB_Host_DeviceUnattached(void)
 161 {
 162         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 163         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 164 }
 165
 166 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 167  *  enumerated by the host and is now ready to be used by the application.
 168  */
 169 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 170 {
 171         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 172
 173         uint16_t ConfigDescriptorSize;
 174         uint8_t  ConfigDescriptorData[512];
 175
 176         if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
 177                                                sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
 178         {
 179                 puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
 180                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 181                 return;
 182         }
 183
 184         if (SI_Host_ConfigurePipes(&DigitalCamera_SI_Interface,
 185                                    ConfigDescriptorSize, ConfigDescriptorData) != SI_ENUMERROR_NoError)
 186         {
 187                 puts_P(PSTR("Attached Device Not a Valid Still Image Class Device.\r\n"));
 188                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 189                 return;
 190         }
 191
 192         if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
 193         {
 194                 puts_P(PSTR("Error Setting Device Configuration.\r\n"));
 195                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 196                 return;
 197         }
 198
 199         puts_P(PSTR("Still Image Device Enumerated.\r\n"));
 200         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 201 }
 202
 203 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 204 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 205 {
 206         USB_Disable();
 207
 208         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 209                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 210
 211         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 212         for(;;);
 213 }
 214
 215 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 216  *  enumerating an attached USB device.
 217  */
 218 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
 219                                             const uint8_t SubErrorCode)
 220 {
 221         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 222                                  " -- Error Code %d\r\n"
 223                                  " -- Sub Error Code %d\r\n"
 224                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 225
 226         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 227 }
 228