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387 lines
13 KiB
387 lines
13 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the MassStorageHost demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "MassStorageHost.h"
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/* Globals */
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/** Index of the highest available LUN (Logical Unit) in the attached Mass Storage Device */
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uint8_t MassStore_MaxLUNIndex;
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/** Main program entry point. This routine configures the hardware required by the application, then
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* starts the scheduler to run the application tasks.
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*/
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int main(void)
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{
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SetupHardware();
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puts_P(PSTR(ESC_FG_CYAN "Mass Storage Host Demo running.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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for (;;)
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{
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MassStorage_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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/* Hardware Initialization */
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SerialStream_Init(9600, false);
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LEDs_Init();
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Buttons_Init();
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USB_Init();
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}
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/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
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* starts the library USB task to begin the enumeration and USB management process.
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*/
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void EVENT_USB_Host_DeviceAttached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
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* stops the library USB task management process.
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*/
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void EVENT_USB_Host_DeviceUnattached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
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* enumerated by the host and is now ready to be used by the application.
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*/
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void EVENT_USB_Host_DeviceEnumerationComplete(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
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void EVENT_USB_HostError(const uint8_t ErrorCode)
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{
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USB_ShutDown();
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puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
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printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
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* enumerating an attached USB device.
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*/
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void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
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{
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puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
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printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
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printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
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printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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/** Task to set the configuration of the attached device after it has been enumerated, and to read in blocks from
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* the device and print them to the serial port.
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*/
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void MassStorage_Task(void)
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{
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uint8_t ErrorCode;
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switch (USB_HostState)
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{
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case HOST_STATE_Addressed:
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puts_P(PSTR("Getting Config Data.\r\n"));
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error via status LEDs */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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puts_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error via status LEDs */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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puts_P(PSTR("Mass Storage Disk Enumerated.\r\n"));
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USB_HostState = HOST_STATE_Configured;
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break;
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case HOST_STATE_Configured:
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/* Indicate device busy via the status LEDs */
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LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
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/* Send the request, display error and wait for device detach if request fails */
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if ((ErrorCode = MassStore_GetMaxLUN(&MassStore_MaxLUNIndex)) != HOST_SENDCONTROL_Successful)
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{
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ShowDiskReadError(PSTR("Get Max LUN"), false, ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Print number of LUNs detected in the attached device */
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printf_P(PSTR("Total LUNs: %d - Using first LUN in device.\r\n"), (MassStore_MaxLUNIndex + 1));
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/* Reset the Mass Storage device interface, ready for use */
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if ((ErrorCode = MassStore_MassStorageReset()) != HOST_SENDCONTROL_Successful)
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{
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ShowDiskReadError(PSTR("Mass Storage Reset"), false, ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Get sense data from the device - many devices will not accept any other commands until the sense data
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* is read - both on start-up and after a failed command */
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SCSI_Request_Sense_Response_t SenseData;
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if (((ErrorCode = MassStore_RequestSense(0, &SenseData)) != 0) || (SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Request Sense"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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break;
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}
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/* Set the prevent removal flag for the device, allowing it to be accessed */
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if (((ErrorCode = MassStore_PreventAllowMediumRemoval(0, true)) != 0) || (SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Prevent/Allow Medium Removal"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Get inquiry data from the device */
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SCSI_Inquiry_Response_t InquiryData;
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if (((ErrorCode = MassStore_Inquiry(0, &InquiryData)) != 0) || (SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Inquiry"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Print vendor and product names of attached device */
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printf_P(PSTR("Vendor \"%.8s\", Product \"%.16s\"\r\n"), InquiryData.VendorID, InquiryData.ProductID);
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/* Wait until disk ready */
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puts_P(PSTR("Waiting until ready.."));
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do
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{
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Serial_TxByte('.');
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/* Abort if device removed */
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if (USB_HostState == HOST_STATE_Unattached)
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break;
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if ((ErrorCode = MassStore_TestUnitReady(0)) != PIPE_RWSTREAM_NoError)
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{
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ShowDiskReadError(PSTR("Test Unit Ready"), false, ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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}
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while (SCSICommandStatus.Status != Command_Pass);
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puts_P(PSTR("\r\nRetrieving Capacity... "));
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/* Create new structure for the disk's capacity in blocks and block size */
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SCSI_Capacity_t DiskCapacity;
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/* Retrieve disk capacity */
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if (((ErrorCode = MassStore_ReadCapacity(0, &DiskCapacity)) != 0) || (SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Read Capacity"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Display the disk capacity in blocks * block size bytes */
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printf_P(PSTR("%lu blocks of %lu bytes.\r\n"), DiskCapacity.Blocks, DiskCapacity.BlockSize);
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/* Create a new buffer capabable of holding a single block from the device */
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uint8_t BlockBuffer[DiskCapacity.BlockSize];
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/* Read in the first 512 byte block from the device */
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if (((ErrorCode = MassStore_ReadDeviceBlock(0, 0x00000000, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0) ||
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(SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Read Device Block"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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puts_P(PSTR("\r\nContents of first block:\r\n"));
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/* Print out the first block in both HEX and ASCII, 16 bytes per line */
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for (uint16_t Chunk = 0; Chunk < (DiskCapacity.BlockSize >> 4); Chunk++)
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{
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/* Pointer to the start of the current 16-byte chunk in the read block of data */
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uint8_t* ChunkPtr = &BlockBuffer[Chunk << 4];
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/* Print out the 16 bytes of the chunk in HEX format */
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for (uint8_t ByteOffset = 0; ByteOffset < (1 << 4); ByteOffset++)
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{
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char CurrByte = *(ChunkPtr + ByteOffset);
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printf_P(PSTR("%.2X "), CurrByte);
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}
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puts_P(PSTR(" "));
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/* Print out the 16 bytes of the chunk in ASCII format */
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for (uint8_t ByteOffset = 0; ByteOffset < (1 << 4); ByteOffset++)
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{
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char CurrByte = *(ChunkPtr + ByteOffset);
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putchar(isprint(CurrByte) ? CurrByte : '.');
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}
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puts_P(PSTR("\r\n"));
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}
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puts_P(PSTR("\r\n\r\nPress board button to read entire ASCII contents of disk...\r\n\r\n"));
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/* Wait for the board button to be pressed */
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while (!(Buttons_GetStatus() & BUTTONS_BUTTON1))
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{
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/* Abort if device removed */
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if (USB_HostState == HOST_STATE_Unattached)
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break;
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}
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/* Print out the entire disk contents in ASCII format */
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for (uint32_t CurrBlock = 0; CurrBlock < DiskCapacity.Blocks; CurrBlock++)
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{
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/* Read in the next block of data from the device */
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if (((ErrorCode = MassStore_ReadDeviceBlock(0, CurrBlock, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0) ||
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(SCSICommandStatus.Status != Command_Pass))
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{
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ShowDiskReadError(PSTR("Read Device Block"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Send the ASCII data in the read in block to the serial port */
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for (uint16_t Byte = 0; Byte < DiskCapacity.BlockSize; Byte++)
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{
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char CurrByte = BlockBuffer[Byte];
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putchar(isprint(CurrByte) ? CurrByte : '.');
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}
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/* Abort if device removed */
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if (USB_HostState == HOST_STATE_Unattached)
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break;
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}
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/* Indicate device no longer busy */
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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}
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/** Indicates that a communication error has occurred with the attached Mass Storage Device,
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* printing error codes to the serial port and waiting until the device is removed before
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* continuing.
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*
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* \param[in] CommandString ASCII string located in PROGMEM space indicating what operation failed
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* \param[in] FailedAtSCSILayer Indicates if the command failed at the (logical) SCSI layer or at the physical USB layer
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* \param[in] ErrorCode Error code of the function which failed to complete successfully
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*/
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void ShowDiskReadError(char* CommandString, bool FailedAtSCSILayer, uint8_t ErrorCode)
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{
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if (FailedAtSCSILayer)
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{
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/* Display the error code */
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printf_P(PSTR(ESC_FG_RED "SCSI command error (%S).\r\n"), CommandString);
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printf_P(PSTR(" -- Status Code: %d" ESC_FG_WHITE), ErrorCode);
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}
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else
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{
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/* Display the error code */
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printf_P(PSTR(ESC_FG_RED "Command error (%S).\r\n"), CommandString);
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printf_P(PSTR(" -- Error Code: %d" ESC_FG_WHITE), ErrorCode);
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}
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Pipe_Freeze();
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/* Indicate device error via the status LEDs */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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