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- /*
- LUFA Library
- Copyright (C) Dean Camera, 2014.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
- */
-
- /*
- Copyright 2014 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaims all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
- */
-
- /** \file
- *
- * Main source file for the StillImageHost demo. This file contains the main tasks of
- * the demo and is responsible for the initial application hardware configuration.
- */
-
- #include "StillImageHost.h"
-
- /** Main program entry point. This routine configures the hardware required by the application, then
- * enters a loop to run the application tasks in sequence.
- */
- int main(void)
- {
- SetupHardware();
-
- puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
-
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
- GlobalInterruptEnable();
-
- for (;;)
- {
- StillImageHost_Task();
-
- USB_USBTask();
- }
- }
-
- /** Configures the board hardware and chip peripherals for the demo's functionality. */
- void SetupHardware(void)
- {
- #if (ARCH == ARCH_AVR8)
- /* Disable watchdog if enabled by bootloader/fuses */
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- /* Disable clock division */
- clock_prescale_set(clock_div_1);
- #endif
-
- /* Hardware Initialization */
- Serial_Init(9600, false);
- LEDs_Init();
- USB_Init();
-
- /* Create a stdio stream for the serial port for stdin and stdout */
- Serial_CreateStream(NULL);
- }
-
- /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
- * starts the library USB task to begin the enumeration and USB management process.
- */
- void EVENT_USB_Host_DeviceAttached(void)
- {
- puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
- }
-
- /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
- * stops the library USB task management process.
- */
- void EVENT_USB_Host_DeviceUnattached(void)
- {
- puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
- }
-
- /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
- * enumerated by the host and is now ready to be used by the application.
- */
- void EVENT_USB_Host_DeviceEnumerationComplete(void)
- {
- puts_P(PSTR("Getting Config Data.\r\n"));
-
- uint8_t ErrorCode;
-
- /* Get and process the configuration descriptor data */
- if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
- {
- if (ErrorCode == ControlError)
- puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
- else
- puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
-
- printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- return;
- }
-
- /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
- if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
- {
- printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
- " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- return;
- }
-
- puts_P(PSTR("Still Image Device Enumerated.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_READY);
- }
-
- /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
- void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
- {
- USB_Disable();
-
- printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
- " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- for(;;);
- }
-
- /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
- * enumerating an attached USB device.
- */
- void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
- const uint8_t SubErrorCode)
- {
- printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
- " -- Error Code %d\r\n"
- " -- Sub Error Code %d\r\n"
- " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
-
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- /** Task to print device information through the serial port, and open/close a test PIMA session with the
- * attached Still Image device.
- */
- void StillImageHost_Task(void)
- {
- if (USB_HostState != HOST_STATE_Configured)
- return;
-
- uint8_t ErrorCode;
-
- /* Indicate device busy via the status LEDs */
- LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
-
- puts_P(PSTR("Retrieving Device Info...\r\n"));
-
- PIMA_SendBlock = (PIMA_Container_t)
- {
- .DataLength = PIMA_COMMAND_SIZE(0),
- .Type = PIMA_CONTAINER_CommandBlock,
- .Code = PIMA_OPERATION_GETDEVICEINFO,
- .TransactionID = 0x00000000,
- .Params = {},
- };
-
- /* Send the GETDEVICEINFO block */
- SImage_SendBlockHeader();
-
- /* Receive the response data block */
- if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError)
- {
- ShowCommandError(ErrorCode, false);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- /* Calculate the size of the returned device info data structure */
- uint16_t DeviceInfoSize = (PIMA_ReceivedBlock.DataLength - PIMA_COMMAND_SIZE(0));
-
- /* Create a buffer large enough to hold the entire device info */
- uint8_t DeviceInfo[DeviceInfoSize];
-
- /* Read in the data block data (containing device info) */
- SImage_ReadData(DeviceInfo, DeviceInfoSize);
-
- /* Once all the data has been read, the pipe must be cleared before the response can be sent */
- Pipe_ClearIN();
-
- /* Create a pointer for walking through the info dataset */
- uint8_t* DeviceInfoPos = DeviceInfo;
-
- /* Skip over the data before the unicode device information strings */
- DeviceInfoPos += 8; // Skip to VendorExtensionDesc String
- DeviceInfoPos += (1 + UNICODE_STRING_LENGTH(*DeviceInfoPos)); // Skip over VendorExtensionDesc String
- DeviceInfoPos += 2; // Skip over FunctionalMode
- DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Operations Array
- DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Events Array
- DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Device Properties Array
- DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Capture Formats Array
- DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Image Formats Array
-
- /* Extract and convert the Manufacturer Unicode string to ASCII and print it through the USART */
- char Manufacturer[*DeviceInfoPos];
- UnicodeToASCII(DeviceInfoPos, Manufacturer);
- printf_P(PSTR(" Manufacturer: %s\r\n"), Manufacturer);
-
- DeviceInfoPos += 1 + UNICODE_STRING_LENGTH(*DeviceInfoPos); // Skip over Manufacturer String
-
- /* Extract and convert the Model Unicode string to ASCII and print it through the USART */
- char Model[*DeviceInfoPos];
- UnicodeToASCII(DeviceInfoPos, Model);
- printf_P(PSTR(" Model: %s\r\n"), Model);
-
- DeviceInfoPos += 1 + UNICODE_STRING_LENGTH(*DeviceInfoPos); // Skip over Model String
-
- /* Extract and convert the Device Version Unicode string to ASCII and print it through the USART */
- char DeviceVersion[*DeviceInfoPos];
- UnicodeToASCII(DeviceInfoPos, DeviceVersion);
- printf_P(PSTR(" Device Version: %s\r\n"), DeviceVersion);
-
- /* Receive the final response block from the device */
- if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError)
- {
- ShowCommandError(ErrorCode, false);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- /* Verify that the command completed successfully */
- if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))
- {
- ShowCommandError(PIMA_ReceivedBlock.Code, true);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- puts_P(PSTR("Opening Session...\r\n"));
-
- PIMA_SendBlock = (PIMA_Container_t)
- {
- .DataLength = PIMA_COMMAND_SIZE(1),
- .Type = PIMA_CONTAINER_CommandBlock,
- .Code = PIMA_OPERATION_OPENSESSION,
- .TransactionID = 0x00000000,
- .Params = {0x00000001},
- };
-
- /* Send the OPENSESSION block, open a session with an ID of 0x0001 */
- SImage_SendBlockHeader();
-
- /* Receive the response block from the device */
- if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError)
- {
- ShowCommandError(ErrorCode, false);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- /* Verify that the command completed successfully */
- if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))
- {
- ShowCommandError(PIMA_ReceivedBlock.Code, true);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- puts_P(PSTR("Closing Session...\r\n"));
-
- PIMA_SendBlock = (PIMA_Container_t)
- {
- .DataLength = PIMA_COMMAND_SIZE(1),
- .Type = PIMA_CONTAINER_CommandBlock,
- .Code = PIMA_OPERATION_CLOSESESSION,
- .TransactionID = 0x00000001,
- .Params = {0x00000001},
- };
-
- /* Send the CLOSESESSION block, close the session with an ID of 0x0001 */
- SImage_SendBlockHeader();
-
- /* Receive the response block from the device */
- if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError)
- {
- ShowCommandError(ErrorCode, false);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- /* Verify that the command completed successfully */
- if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))
- {
- ShowCommandError(PIMA_ReceivedBlock.Code, true);
- USB_Host_SetDeviceConfiguration(0);
- return;
- }
-
- puts_P(PSTR("Done.\r\n"));
-
- /* Indicate device no longer busy */
- LEDs_SetAllLEDs(LEDMASK_USB_READY);
- USB_Host_SetDeviceConfiguration(0);
- }
-
- /** Function to convert a given Unicode encoded string to ASCII. This function will only work correctly on Unicode
- * strings which contain ASCII printable characters only.
- *
- * \param[in] UnicodeString Pointer to a Unicode encoded input string
- * \param[out] Buffer Pointer to a buffer where the converted ASCII string should be stored
- */
- void UnicodeToASCII(uint8_t* UnicodeString,
- char* Buffer)
- {
- /* Get the number of characters in the string, skip to the start of the string data */
- uint8_t CharactersRemaining = *(UnicodeString++);
-
- /* Loop through the entire unicode string */
- while (CharactersRemaining--)
- {
- /* Load in the next unicode character (only the lower byte, as only Unicode coded ASCII is supported) */
- *(Buffer++) = *UnicodeString;
-
- /* Jump to the next unicode character */
- UnicodeString += 2;
- }
-
- /* Null terminate the string */
- *Buffer = 0;
- }
-
- /** Displays a PIMA command error via the device's serial port.
- *
- * \param[in] ErrorCode Error code of the function which failed to complete successfully
- * \param[in] ResponseCodeError Indicates if the error is due to a command failed indication from the device, or a communication failure
- */
- void ShowCommandError(uint8_t ErrorCode,
- bool ResponseCodeError)
- {
- const char* FailureType = ((ResponseCodeError) ? PSTR("Response Code != OK") : PSTR("Transaction Fail"));
-
- printf_P(PSTR(ESC_FG_RED "Command Error (%S).\r\n"
- " -- Error Code %d\r\n" ESC_FG_WHITE), FailureType, ErrorCode);
-
- /* Indicate error via status LEDs */
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
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