diff options
Diffstat (limited to 'Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c')
| -rw-r--r-- | Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c b/Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c new file mode 100644 index 000000000..f26e9e2a6 --- /dev/null +++ b/Demos/Host/LowLevel/MouseHostWithParser/MouseHostWithParser.c @@ -0,0 +1,362 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, 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 disclaim 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 MouseHostWithParser demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "MouseHostWithParser.h"
+
+/* Scheduler Task List */
+TASK_LIST
+{
+ { .Task = USB_USBTask , .TaskStatus = TASK_STOP },
+ { .Task = USB_Mouse_Host , .TaskStatus = TASK_STOP },
+};
+
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * starts the scheduler to run the application tasks.
+ */
+int main(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ SerialStream_Init(9600, false);
+ LEDs_Init();
+
+ /* Indicate USB not ready */
+ UpdateStatus(Status_USBNotReady);
+
+ /* Initialize Scheduler so that it can be used */
+ Scheduler_Init();
+
+ /* Initialize USB Subsystem */
+ USB_Init();
+
+ /* Start-up message */
+ puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
+ "Mouse Host Demo running.\r\n" ESC_INVERSE_OFF));
+
+ /* Scheduling - routine never returns, so put this last in the main function */
+ Scheduler_Start();
+}
+
+/** 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_DeviceAttached(void)
+{
+ puts_P(PSTR("Device Attached.\r\n"));
+ UpdateStatus(Status_USBEnumerating);
+
+ /* Start USB management task to enumerate the device */
+ Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
+}
+
+/** 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_DeviceUnattached(void)
+{
+ /* Stop mouse and USB management task */
+ Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
+ Scheduler_SetTaskMode(USB_Mouse_Host, TASK_STOP);
+
+ puts_P(PSTR("Device Unattached.\r\n"));
+ UpdateStatus(Status_USBNotReady);
+}
+
+/** 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_DeviceEnumerationComplete(void)
+{
+ /* Start Mouse Host task */
+ Scheduler_SetTaskMode(USB_Mouse_Host, TASK_RUN);
+
+ /* Indicate device enumeration complete */
+ UpdateStatus(Status_USBReady);
+}
+
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
+void EVENT_USB_HostError(const uint8_t ErrorCode)
+{
+ USB_ShutDown();
+
+ puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
+
+ UpdateStatus(Status_HardwareError);
+ for(;;);
+}
+
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
+ * enumerating an attached USB device.
+ */
+void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
+{
+ puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
+ printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
+ printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
+
+ UpdateStatus(Status_EnumerationError);
+}
+
+/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
+ * log to a serial port, or anything else that is suitable for status updates.
+ *
+ * \param CurrentStatus Current status of the system, from the MouseHostWithParser_StatusCodes_t enum
+ */
+void UpdateStatus(uint8_t CurrentStatus)
+{
+ uint8_t LEDMask = LEDS_NO_LEDS;
+
+ /* Set the LED mask to the appropriate LED mask based on the given status code */
+ switch (CurrentStatus)
+ {
+ case Status_USBNotReady:
+ LEDMask = (LEDS_LED1);
+ break;
+ case Status_USBEnumerating:
+ LEDMask = (LEDS_LED1 | LEDS_LED2);
+ break;
+ case Status_USBReady:
+ LEDMask = (LEDS_LED2);
+ break;
+ case Status_EnumerationError:
+ case Status_HardwareError:
+ LEDMask = (LEDS_LED1 | LEDS_LED3);
+ break;
+ case Status_Busy:
+ LEDMask = (LEDS_LED1 | LEDS_LED4);
+ break;
+ }
+
+ /* Set the board LEDs to the new LED mask */
+ LEDs_SetAllLEDs(LEDMask);
+}
+
+/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
+ * the HID report descriptor and HID reports from the device and display the results onto the board LEDs.
+ */
+TASK(USB_Mouse_Host)
+{
+ uint8_t ErrorCode;
+
+ /* Switch to determine what user-application handled host state the host state machine is in */
+ switch (USB_HostState)
+ {
+ case HOST_STATE_Addressed:
+ /* Standard request to set the device configuration to configuration 1 */
+ USB_ControlRequest = (USB_Request_Header_t)
+ {
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
+ .bRequest = REQ_SetConfiguration,
+ .wValue = 1,
+ .wIndex = 0,
+ .wLength = 0,
+ };
+
+ /* Select the control pipe for the request transfer */
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+ /* Send the request, display error and wait for device detach if request fails */
+ if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+ {
+ puts_P(PSTR("Control Error (Set Configuration).\r\n"));
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error via status LEDs */
+ UpdateStatus(Status_EnumerationError);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ USB_HostState = HOST_STATE_Configured;
+ break;
+ case HOST_STATE_Configured:
+ puts_P(PSTR("Getting Config Data.\r\n"));
+
+ /* Get and process the configuration descriptor data */
+ if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
+ {
+ if (ErrorCode == ControlError)
+ puts_P(PSTR("Control Error (Get Configuration).\r\n"));
+ else
+ puts_P(PSTR("Invalid Device.\r\n"));
+
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error via status LEDs */
+ UpdateStatus(Status_EnumerationError);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ puts_P(PSTR("Processing HID Report.\r\n"));
+
+ /* LEDs one and two on to indicate busy processing */
+ UpdateStatus(Status_Busy);
+
+ /* Get and process the device's first HID report descriptor */
+ if ((ErrorCode = GetHIDReportData()) != ParseSuccessful)
+ {
+ puts_P(PSTR("Report Parse Error.\r\n"));
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error via status LEDs */
+ UpdateStatus(Status_EnumerationError);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ /* All LEDs off - ready to indicate key presses */
+ UpdateStatus(Status_USBReady);
+
+ puts_P(PSTR("Mouse Enumerated.\r\n"));
+
+ USB_HostState = HOST_STATE_Ready;
+ break;
+ case HOST_STATE_Ready:
+ /* Select and unfreeze mouse data pipe */
+ Pipe_SelectPipe(MOUSE_DATAPIPE);
+ Pipe_Unfreeze();
+
+ /* Check to see if a packet has been received */
+ if (Pipe_IsINReceived())
+ {
+ /* Check if data has been received from the attached mouse */
+ if (Pipe_IsReadWriteAllowed())
+ {
+ /* Create buffer big enough for the report */
+ uint8_t MouseReport[Pipe_BytesInPipe()];
+
+ /* Load in the mouse report */
+ Pipe_Read_Stream_LE(MouseReport, Pipe_BytesInPipe());
+
+ /* Process the read in mouse report from the device */
+ ProcessMouseReport(MouseReport);
+ }
+
+ /* Clear the IN endpoint, ready for next data packet */
+ Pipe_ClearIN();
+ }
+
+ /* Freeze mouse data pipe */
+ Pipe_Freeze();
+ break;
+ }
+}
+
+/** Processes a read HID report from an attached mouse, extracting out elements via the HID parser results
+ * as required and displays movement and button presses on the board LEDs.
+ *
+ * \param MouseReport Pointer to a HID report from an attached mouse device
+ */
+void ProcessMouseReport(uint8_t* MouseReport)
+{
+ uint8_t LEDMask = LEDS_NO_LEDS;
+
+ /* Check each HID report item in turn, looking for mouse X/Y/button reports */
+ for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++)
+ {
+ /* Create a temporary item pointer to the next report item */
+ HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber];
+
+ bool FoundData;
+
+ if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_BUTTON) &&
+ (ReportItem->ItemType == REPORT_ITEM_TYPE_In))
+ {
+ /* Get the mouse button value */
+ FoundData = USB_GetHIDReportItemInfo(MouseReport, ReportItem);
+
+ /* For multi-report devices - if the requested data was not in the issued report, continue */
+ if (!(FoundData))
+ continue;
+
+ /* If button is pressed, all LEDs are turned on */
+ if (ReportItem->Value)
+ LEDMask = LEDS_ALL_LEDS;
+ }
+ else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) &&
+ ((ReportItem->Attributes.Usage.Usage == USAGE_X) ||
+ (ReportItem->Attributes.Usage.Usage == USAGE_Y)) &&
+ (ReportItem->ItemType == REPORT_ITEM_TYPE_In))
+ {
+ /* Get the mouse relative position value */
+ FoundData = USB_GetHIDReportItemInfo(MouseReport, ReportItem);
+
+ /* For multi-report devices - if the requested data was not in the issued report, continue */
+ if (!(FoundData))
+ continue;
+
+ int16_t DeltaMovement;
+
+ if (ReportItem->Attributes.BitSize > 8)
+ DeltaMovement = (int16_t)ReportItem->Value;
+ else
+ DeltaMovement = (int8_t)ReportItem->Value;
+
+ /* Determine if the report is for the X or Y delta movement */
+ if (ReportItem->Attributes.Usage.Usage == USAGE_X)
+ {
+ /* Turn on the appropriate LED according to direction if the delta is non-zero */
+ if (DeltaMovement)
+ LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2);
+ }
+ else
+ {
+ /* Turn on the appropriate LED according to direction if the delta is non-zero */
+ if (DeltaMovement)
+ LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4);
+ }
+ }
+ }
+
+ /* Display the button information on the board LEDs */
+ LEDs_SetAllLEDs(LEDMask);
+}
\ No newline at end of file |