--- /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 CDCHost demo. This file contains the main tasks of\r
+ * the demo and is responsible for the initial application hardware configuration.\r
+ */\r
+ \r
+#include "CDCHost.h"\r
+\r
+/* Project Tags, for reading out using the ButtLoad project */\r
+BUTTLOADTAG(ProjName, "LUFA CDC Host App");\r
+BUTTLOADTAG(BuildTime, __TIME__);\r
+BUTTLOADTAG(BuildDate, __DATE__);\r
+BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);\r
+\r
+/* Scheduler Task List */\r
+TASK_LIST\r
+{\r
+ { Task: USB_USBTask , TaskStatus: TASK_STOP },\r
+ { Task: USB_CDC_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
+ SetSystemClockPrescaler(0);\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
+ /* Startup message */\r
+ puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY\r
+ "CDC 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
+EVENT_HANDLER(USB_DeviceAttached)\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
+EVENT_HANDLER(USB_DeviceUnattached)\r
+{\r
+ /* Stop keyboard and USB management task */\r
+ Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
+ Scheduler_SetTaskMode(USB_CDC_Host, TASK_STOP);\r
+\r
+ puts_P(PSTR("\r\nDevice 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
+EVENT_HANDLER(USB_DeviceEnumerationComplete)\r
+{\r
+ /* Start CDC Host task */\r
+ Scheduler_SetTaskMode(USB_CDC_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
+EVENT_HANDLER(USB_HostError)\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 occured while\r
+ * enumerating an attached USB device.\r
+ */\r
+EVENT_HANDLER(USB_DeviceEnumerationFailed)\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 CDCHost_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
+/** Task to set the configuration of the attached device after it has been enumerated, and to read in\r
+ * data received from the attached CDC device and print it to the serial port.\r
+ */\r
+TASK(USB_CDC_Host)\r
+{\r
+ uint8_t ErrorCode;\r
+\r
+ switch (USB_HostState)\r
+ {\r
+ case HOST_STATE_Addressed:\r
+ /* Standard request to set the device configuration to configuration 1 */\r
+ USB_HostRequest = (USB_Host_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
+ /* Send the request, display error and wait for device detatch 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 via status LEDs */\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 via status LEDs */\r
+ UpdateStatus(Status_EnumerationError);\r
+\r
+ /* Wait until USB device disconnected */\r
+ while (USB_IsConnected);\r
+ break;\r
+ }\r
+\r
+ puts_P(PSTR("CDC Device Enumerated.\r\n"));\r
+ \r
+ USB_HostState = HOST_STATE_Ready;\r
+ break;\r
+ case HOST_STATE_Ready:\r
+ /* Select and the data IN pipe */\r
+ Pipe_SelectPipe(CDC_DATAPIPE_IN);\r
+\r
+ /* Check if data is in the pipe */\r
+ if (Pipe_ReadWriteAllowed())\r
+ {\r
+ /* Get the length of the pipe data, and create a new buffer to hold it */\r
+ uint16_t BufferLength = Pipe_BytesInPipe();\r
+ uint8_t Buffer[BufferLength];\r
+ \r
+ /* Read in the pipe data to the tempoary buffer */\r
+ Pipe_Read_Stream_LE(Buffer, BufferLength);\r
+ \r
+ /* Clear the pipe after it is read, ready for the next packet */\r
+ Pipe_ClearCurrentBank();\r
+ \r
+ /* Print out the buffer contents to the USART */\r
+ for (uint16_t BufferByte = 0; BufferByte < BufferLength; BufferByte++)\r
+ putchar(Buffer[BufferByte]);\r
+ }\r
+\r
+ /* Select and unfreeze the notification pipe */\r
+ Pipe_SelectPipe(CDC_NOTIFICATIONPIPE);\r
+ Pipe_Unfreeze();\r
+ \r
+ /* Check if data is in the pipe */\r
+ if (Pipe_ReadWriteAllowed())\r
+ {\r
+ /* Discard the event notification */\r
+ Pipe_ClearCurrentBank();\r
+ }\r
+ \r
+ /* Freeze notification IN pipe after use */\r
+ Pipe_Freeze();\r
+ \r
+ break;\r
+ }\r
+}\r
projects / pub / lufa.git / blobdiff