--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2009.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, and distribute this software\r
+ and its documentation for any purpose and without fee is hereby\r
+ granted, provided that the above copyright notice appear in all\r
+ copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Main source file for the GenericHIDHost demo. This file contains the main tasks of\r
+ * the demo and is responsible for the initial application hardware configuration.\r
+ */\r
+ \r
+#include "GenericHIDHost.h"\r
+\r
+/* Scheduler Task List */\r
+TASK_LIST\r
+{\r
+ { .Task = USB_USBTask , .TaskStatus = TASK_STOP },\r
+ { .Task = USB_HID_Host , .TaskStatus = TASK_STOP },\r
+};\r
+\r
+\r
+/** Main program entry point. This routine configures the hardware required by the application, then\r
+ * starts the scheduler to run the application tasks.\r
+ */\r
+int main(void)\r
+{\r
+ /* Disable watchdog if enabled by bootloader/fuses */\r
+ MCUSR &= ~(1 << WDRF);\r
+ wdt_disable();\r
+\r
+ /* Disable clock division */\r
+ clock_prescale_set(clock_div_1);\r
+ \r
+ /* Hardware Initialization */\r
+ SerialStream_Init(9600, false);\r
+ LEDs_Init();\r
+ \r
+ /* Indicate USB not ready */\r
+ UpdateStatus(Status_USBNotReady);\r
+ \r
+ /* Initialize Scheduler so that it can be used */\r
+ Scheduler_Init();\r
+\r
+ /* Initialize USB Subsystem */\r
+ USB_Init();\r
+\r
+ /* Start-up message */\r
+ puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY\r
+ "Generic HID Host Demo running.\r\n" ESC_INVERSE_OFF));\r
+ \r
+ /* Scheduling - routine never returns, so put this last in the main function */\r
+ Scheduler_Start();\r
+}\r
+\r
+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and\r
+ * starts the library USB task to begin the enumeration and USB management process.\r
+ */\r
+void EVENT_USB_DeviceAttached(void)\r
+{\r
+ puts_P(PSTR("Device Attached.\r\n"));\r
+ UpdateStatus(Status_USBEnumerating);\r
+\r
+ /* Start USB management task to enumerate the device */\r
+ Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);\r
+}\r
+\r
+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and\r
+ * stops the library USB task management process.\r
+ */\r
+void EVENT_USB_DeviceUnattached(void)\r
+{\r
+ /* Stop HID and USB management task */\r
+ Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
+ Scheduler_SetTaskMode(USB_HID_Host, TASK_STOP);\r
+\r
+ puts_P(PSTR("Device Unattached.\r\n"));\r
+ UpdateStatus(Status_USBNotReady);\r
+}\r
+\r
+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully\r
+ * enumerated by the host and is now ready to be used by the application.\r
+ */\r
+void EVENT_USB_DeviceEnumerationComplete(void)\r
+{\r
+ /* Start HID Host task */\r
+ Scheduler_SetTaskMode(USB_HID_Host, TASK_RUN);\r
+\r
+ /* Indicate device enumeration complete */\r
+ UpdateStatus(Status_USBReady);\r
+}\r
+\r
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */\r
+void EVENT_USB_HostError(const uint8_t ErrorCode)\r
+{\r
+ USB_ShutDown();\r
+\r
+ puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));\r
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);\r
+\r
+ UpdateStatus(Status_HardwareError);\r
+ for(;;);\r
+}\r
+\r
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while\r
+ * enumerating an attached USB device.\r
+ */\r
+void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)\r
+{\r
+ puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));\r
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);\r
+ printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);\r
+ printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);\r
+\r
+ UpdateStatus(Status_EnumerationError);\r
+}\r
+\r
+/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to\r
+ * log to a serial port, or anything else that is suitable for status updates.\r
+ *\r
+ * \param CurrentStatus Current status of the system, from the GenericHIDHost_StatusCodes_t enum\r
+ */\r
+void UpdateStatus(uint8_t CurrentStatus)\r
+{\r
+ uint8_t LEDMask = LEDS_NO_LEDS;\r
+ \r
+ /* Set the LED mask to the appropriate LED mask based on the given status code */\r
+ switch (CurrentStatus)\r
+ {\r
+ case Status_USBNotReady:\r
+ LEDMask = (LEDS_LED1);\r
+ break;\r
+ case Status_USBEnumerating:\r
+ LEDMask = (LEDS_LED1 | LEDS_LED2);\r
+ break;\r
+ case Status_USBReady:\r
+ LEDMask = (LEDS_LED2);\r
+ break;\r
+ case Status_EnumerationError:\r
+ case Status_HardwareError:\r
+ LEDMask = (LEDS_LED1 | LEDS_LED3);\r
+ break;\r
+ }\r
+ \r
+ /* Set the board LEDs to the new LED mask */\r
+ LEDs_SetAllLEDs(LEDMask);\r
+}\r
+\r
+/** Reads in and processes the next report from the attached device, displaying the report\r
+ * contents on the board LEDs and via the serial port.\r
+ */\r
+void ReadNextReport(void)\r
+{\r
+ /* Select and unfreeze HID data IN pipe */\r
+ Pipe_SelectPipe(HID_DATA_IN_PIPE);\r
+ Pipe_Unfreeze();\r
+\r
+ /* Check to see if a packet has been received */\r
+ if (!(Pipe_IsINReceived()))\r
+ {\r
+ /* Refreeze HID data IN pipe */\r
+ Pipe_Freeze();\r
+ \r
+ return;\r
+ }\r
+ \r
+ /* Ensure pipe contains data before trying to read from it */\r
+ if (Pipe_IsReadWriteAllowed())\r
+ {\r
+ uint8_t ReportINData[Pipe_BytesInPipe()];\r
+\r
+ /* Read in HID report data */\r
+ Pipe_Read_Stream_LE(&ReportINData, sizeof(ReportINData));\r
+ \r
+ /* Print report data through the serial port */\r
+ for (uint16_t CurrByte = 0; CurrByte < sizeof(ReportINData); CurrByte++)\r
+ printf_P(PSTR("0x%02X "), ReportINData[CurrByte]);\r
+ \r
+ puts_P(PSTR("\r\n"));\r
+ }\r
+ \r
+ /* Clear the IN endpoint, ready for next data packet */\r
+ Pipe_ClearIN();\r
+ \r
+ /* Refreeze HID data IN pipe */\r
+ Pipe_Freeze();\r
+}\r
+\r
+/** Writes a report to the attached device.\r
+ *\r
+ * \param ReportOUTData Buffer containing the report to send to the device\r
+ * \param ReportIndex Index of the report in the device (zero if the device does not use multiple reports)\r
+ * \param ReportType Type of report to send, either HID_REPORTTYPE_OUTPUT or HID_REPORTTYPE_FEATURE\r
+ * \param ReportLength Length of the report to send\r
+ */\r
+void WriteNextReport(uint8_t* ReportOUTData, uint8_t ReportIndex, uint8_t ReportType, uint16_t ReportLength)\r
+{\r
+ /* Select and unfreeze HID data OUT pipe */\r
+ Pipe_SelectPipe(HID_DATA_OUT_PIPE);\r
+ \r
+ /* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the\r
+ * control endpoint instead) - check to see if the OUT endpoint has been initialized */\r
+ if (Pipe_IsConfigured())\r
+ {\r
+ Pipe_Unfreeze();\r
+\r
+ /* Ensure pipe is ready to be written to before continuing */\r
+ if (!(Pipe_IsOUTReady()))\r
+ {\r
+ /* Refreeze the data OUT pipe */\r
+ Pipe_Freeze();\r
+ \r
+ return;\r
+ }\r
+ \r
+ /* If the report index is used, send it before the report data */\r
+ if (ReportIndex)\r
+ Pipe_Write_Byte(ReportIndex);\r
+\r
+ /* Write out HID report data */\r
+ Pipe_Write_Stream_LE(ReportOUTData, ReportLength); \r
+ \r
+ /* Clear the OUT endpoint, send last data packet */\r
+ Pipe_ClearOUT();\r
+\r
+ /* Refreeze the data OUT pipe */\r
+ Pipe_Freeze();\r
+ }\r
+ else\r
+ {\r
+ /* Class specific request to send a HID report to the device */\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),\r
+ .bRequest = REQ_SetReport,\r
+ .wValue = ((ReportType << 8) | ReportIndex),\r
+ .wIndex = 0,\r
+ .wLength = ReportLength,\r
+ };\r
+\r
+ /* Select the control pipe for the request transfer */\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ /* Send the request to the device */\r
+ USB_Host_SendControlRequest(ReportOUTData);\r
+ }\r
+}\r
+\r
+/** Task to set the configuration of the attached device after it has been enumerated, and to read and process\r
+ * HID reports from the device and to send reports if desired.\r
+ */\r
+TASK(USB_HID_Host)\r
+{\r
+ uint8_t ErrorCode;\r
+\r
+ /* Switch to determine what user-application handled host state the host state machine is in */\r
+ switch (USB_HostState)\r
+ {\r
+ case HOST_STATE_Addressed:\r
+ /* Standard request to set the device configuration to configuration 1 */\r
+ USB_ControlRequest = (USB_Request_Header_t)\r
+ {\r
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),\r
+ .bRequest = REQ_SetConfiguration,\r
+ .wValue = 1,\r
+ .wIndex = 0,\r
+ .wLength = 0,\r
+ };\r
+\r
+ /* Select the control pipe for the request transfer */\r
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
+\r
+ /* Send the request, display error and wait for device detach if request fails */\r
+ if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)\r
+ {\r
+ puts_P(PSTR("Control Error (Set Configuration).\r\n"));\r
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);\r
+\r
+ /* Indicate error status */\r
+ UpdateStatus(Status_EnumerationError);\r
+ \r
+ /* Wait until USB device disconnected */\r
+ while (USB_IsConnected);\r
+ break;\r
+ }\r
+ \r
+ USB_HostState = HOST_STATE_Configured;\r
+ break;\r
+ case HOST_STATE_Configured:\r
+ puts_P(PSTR("Getting Config Data.\r\n"));\r
+ \r
+ /* Get and process the configuration descriptor data */\r
+ if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)\r
+ {\r
+ if (ErrorCode == ControlError)\r
+ puts_P(PSTR("Control Error (Get Configuration).\r\n"));\r
+ else\r
+ puts_P(PSTR("Invalid Device.\r\n"));\r
+\r
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);\r
+ \r
+ /* Indicate error status */\r
+ UpdateStatus(Status_EnumerationError);\r
+\r
+ /* Wait until USB device disconnected */\r
+ while (USB_IsConnected);\r
+ break;\r
+ }\r
+ \r
+ puts_P(PSTR("HID Device Enumerated.\r\n"));\r
+ \r
+ USB_HostState = HOST_STATE_Ready;\r
+ break;\r
+ case HOST_STATE_Ready:\r
+ ReadNextReport();\r
+\r
+ break;\r
+ }\r
+}\r
projects / pub / lufa.git / blobdiff