-/*\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 DualCDC demo. This file contains the main tasks of the demo and\r
- * is responsible for the initial application hardware configuration.\r
- */\r
- \r
-#include "DualCDC.h"\r
-\r
-/** Contains the current baud rate and other settings of the first virtual serial port. While this demo does not use\r
- * the physical USART and thus does not use these settings, they must still be retained and returned to the host\r
- * upon request or the host will assume the device is non-functional.\r
- *\r
- * These values are set by the host via a class-specific request, however they are not required to be used accurately.\r
- * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical\r
- * serial link characteristics and instead sends and receives data in endpoint streams.\r
- */\r
-CDC_Line_Coding_t LineEncoding1 = { .BaudRateBPS = 0,\r
- .CharFormat = OneStopBit,\r
- .ParityType = Parity_None,\r
- .DataBits = 8 };\r
-\r
-/** Contains the current baud rate and other settings of the second virtual serial port. While this demo does not use\r
- * the physical USART and thus does not use these settings, they must still be retained and returned to the host\r
- * upon request or the host will assume the device is non-functional.\r
- *\r
- * These values are set by the host via a class-specific request, however they are not required to be used accurately.\r
- * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical\r
- * serial link characteristics and instead sends and receives data in endpoint streams.\r
- */\r
-CDC_Line_Coding_t LineEncoding2 = { .BaudRateBPS = 0,\r
- .CharFormat = OneStopBit,\r
- .ParityType = Parity_None,\r
- .DataBits = 8 };\r
-\r
-\r
-/** Main program entry point. This routine configures the hardware required by the application, then\r
- * enters a loop to run the application tasks in sequence.\r
- */\r
-int main(void)\r
-{\r
- SetupHardware();\r
-\r
- for (;;)\r
- {\r
- CDC1_Task();\r
- CDC2_Task();\r
- USB_USBTask();\r
- }\r
-}\r
-\r
-/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
-void SetupHardware(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
- Joystick_Init();\r
- LEDs_Init();\r
- USB_Init();\r
-}\r
-\r
-/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and\r
- * starts the library USB task to begin the enumeration and USB management process.\r
- */\r
-void EVENT_USB_Device_Connect(void)\r
-{\r
- /* Indicate USB enumerating */\r
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
-}\r
-\r
-/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
- * the status LEDs and stops the USB management and CDC management tasks.\r
- */\r
-void EVENT_USB_Device_Disconnect(void)\r
-{\r
- /* Indicate USB not ready */\r
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
-}\r
-\r
-/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
- * of the USB device after enumeration - the device endpoints are configured and the CDC management tasks are started.\r
- */\r
-void EVENT_USB_Device_ConfigurationChanged(void)\r
-{ \r
- /* Indicate USB connected and ready */\r
- LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
-\r
- /* Setup CDC Notification, Rx and Tx Endpoints for the first CDC */\r
- if (!(Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC1_TX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC1_RX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- /* Setup CDC Notification, Rx and Tx Endpoints for the second CDC */\r
- if (!(Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC2_TX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC2_RX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- /* Reset line encoding baud rates so that the host knows to send new values */\r
- LineEncoding1.BaudRateBPS = 0;\r
- LineEncoding2.BaudRateBPS = 0;\r
-}\r
-\r
-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific\r
- * control requests that are not handled internally by the USB library (including the CDC control commands,\r
- * which are all issued via the control endpoint), so that they can be handled appropriately for the application.\r
- */\r
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
-{\r
- /* Determine which interface's Line Coding data is being set from the wIndex parameter */\r
- uint8_t* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? (uint8_t*)&LineEncoding1 : (uint8_t*)&LineEncoding2;\r
-\r
- /* Process CDC specific control requests */\r
- switch (USB_ControlRequest.bRequest)\r
- {\r
- case REQ_GetLineEncoding:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
- { \r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
-\r
- /* Write the line coding data to the control endpoint */\r
- Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t));\r
- \r
- /* Finalize the stream transfer to send the last packet or clear the host abort */\r
- Endpoint_ClearOUT();\r
- }\r
- \r
- break;\r
- case REQ_SetLineEncoding:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
-\r
- /* Read the line coding data in from the host into the global struct */\r
- Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t));\r
-\r
- /* Finalize the stream transfer to clear the last packet from the host */\r
- Endpoint_ClearIN();\r
- }\r
- \r
- break;\r
- case REQ_SetControlLineState:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
- \r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- }\r
-}\r
-\r
-/** Function to manage CDC data transmission and reception to and from the host for the first CDC interface, which sends joystick\r
- * movements to the host as ASCII strings.\r
- */\r
-void CDC1_Task(void)\r
-{\r
- char* ReportString = NULL;\r
- uint8_t JoyStatus_LCL = Joystick_GetStatus();\r
- static bool ActionSent = false;\r
- \r
- /* Device must be connected and configured for the task to run */\r
- if (USB_DeviceState != DEVICE_STATE_Configured)\r
- return;\r
-\r
- /* Determine if a joystick action has occurred */\r
- if (JoyStatus_LCL & JOY_UP)\r
- ReportString = "Joystick Up\r\n";\r
- else if (JoyStatus_LCL & JOY_DOWN)\r
- ReportString = "Joystick Down\r\n";\r
- else if (JoyStatus_LCL & JOY_LEFT)\r
- ReportString = "Joystick Left\r\n";\r
- else if (JoyStatus_LCL & JOY_RIGHT)\r
- ReportString = "Joystick Right\r\n";\r
- else if (JoyStatus_LCL & JOY_PRESS)\r
- ReportString = "Joystick Pressed\r\n";\r
- else\r
- ActionSent = false;\r
-\r
- /* Flag management - Only allow one string to be sent per action */\r
- if ((ReportString != NULL) && (ActionSent == false) && LineEncoding1.BaudRateBPS)\r
- {\r
- ActionSent = true;\r
- \r
- /* Select the Serial Tx Endpoint */\r
- Endpoint_SelectEndpoint(CDC1_TX_EPNUM);\r
-\r
- /* Write the String to the Endpoint */\r
- Endpoint_Write_Stream_LE(ReportString, strlen(ReportString));\r
- \r
- /* Finalize the stream transfer to send the last packet */\r
- Endpoint_ClearIN();\r
-\r
- /* Wait until the endpoint is ready for another packet */\r
- Endpoint_WaitUntilReady();\r
- \r
- /* Send an empty packet to ensure that the host does not buffer data sent to it */\r
- Endpoint_ClearIN();\r
- }\r
-\r
- /* Select the Serial Rx Endpoint */\r
- Endpoint_SelectEndpoint(CDC1_RX_EPNUM);\r
- \r
- /* Throw away any received data from the host */\r
- if (Endpoint_IsOUTReceived())\r
- Endpoint_ClearOUT();\r
-}\r
-\r
-/** Function to manage CDC data transmission and reception to and from the host for the second CDC interface, which echoes back\r
- * all data sent to it from the host.\r
- */\r
-void CDC2_Task(void)\r
-{\r
- /* Device must be connected and configured for the task to run */\r
- if (USB_DeviceState != DEVICE_STATE_Configured)\r
- return;\r
-\r
- /* Select the Serial Rx Endpoint */\r
- Endpoint_SelectEndpoint(CDC2_RX_EPNUM);\r
- \r
- /* Check to see if any data has been received */\r
- if (Endpoint_IsOUTReceived())\r
- {\r
- /* Create a temp buffer big enough to hold the incoming endpoint packet */\r
- uint8_t Buffer[Endpoint_BytesInEndpoint()];\r
- \r
- /* Remember how large the incoming packet is */\r
- uint16_t DataLength = Endpoint_BytesInEndpoint();\r
- \r
- /* Read in the incoming packet into the buffer */\r
- Endpoint_Read_Stream_LE(&Buffer, DataLength);\r
-\r
- /* Finalize the stream transfer to send the last packet */\r
- Endpoint_ClearOUT();\r
-\r
- /* Select the Serial Tx Endpoint */\r
- Endpoint_SelectEndpoint(CDC2_TX_EPNUM);\r
- \r
- /* Write the received data to the endpoint */\r
- Endpoint_Write_Stream_LE(&Buffer, DataLength);\r
-\r
- /* Finalize the stream transfer to send the last packet */\r
- Endpoint_ClearIN();\r
-\r
- /* Wait until the endpoint is ready for the next packet */\r
- Endpoint_WaitUntilReady();\r
-\r
- /* Send an empty packet to prevent host buffering */\r
- Endpoint_ClearIN();\r
- }\r
-}\r
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2011.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2011 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 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 DualVirtualSerial demo. This file contains the main tasks of the demo and
+ * is responsible for the initial application hardware configuration.
+ */
+
+#include "DualVirtualSerial.h"
+
+/** Contains the current baud rate and other settings of the first virtual serial port. While this demo does not use
+ * the physical USART and thus does not use these settings, they must still be retained and returned to the host
+ * upon request or the host will assume the device is non-functional.
+ *
+ * These values are set by the host via a class-specific request, however they are not required to be used accurately.
+ * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
+ * serial link characteristics and instead sends and receives data in endpoint streams.
+ */
+static CDC_LineEncoding_t LineEncoding1 = { .BaudRateBPS = 0,
+ .CharFormat = CDC_LINEENCODING_OneStopBit,
+ .ParityType = CDC_PARITY_None,
+ .DataBits = 8 };
+
+/** Contains the current baud rate and other settings of the second virtual serial port. While this demo does not use
+ * the physical USART and thus does not use these settings, they must still be retained and returned to the host
+ * upon request or the host will assume the device is non-functional.
+ *
+ * These values are set by the host via a class-specific request, however they are not required to be used accurately.
+ * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
+ * serial link characteristics and instead sends and receives data in endpoint streams.
+ */
+static CDC_LineEncoding_t LineEncoding2 = { .BaudRateBPS = 0,
+ .CharFormat = CDC_LINEENCODING_OneStopBit,
+ .ParityType = CDC_PARITY_None,
+ .DataBits = 8 };
+
+
+/** 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();
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ sei();
+
+ for (;;)
+ {
+ CDC1_Task();
+ CDC2_Task();
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ Joystick_Init();
+ LEDs_Init();
+ USB_Init();
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
+ * starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Device_Connect(void)
+{
+ /* Indicate USB enumerating */
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ * the status LEDs and stops the USB management and CDC management tasks.
+ */
+void EVENT_USB_Device_Disconnect(void)
+{
+ /* Indicate USB not ready */
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
+ * of the USB device after enumeration - the device endpoints are configured and the CDC management tasks are started.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ /* Setup first CDC Interface's Endpoints */
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_TX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
+ CDC_TXRX_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_RX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
+ CDC_TXRX_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
+ CDC_NOTIFICATION_EPSIZE, ENDPOINT_BANK_SINGLE);
+
+ /* Setup second CDC Interface's Endpoints */
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_TX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
+ CDC_TXRX_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_RX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
+ CDC_TXRX_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
+ CDC_NOTIFICATION_EPSIZE, ENDPOINT_BANK_SINGLE);
+
+ /* Reset line encoding baud rates so that the host knows to send new values */
+ LineEncoding1.BaudRateBPS = 0;
+ LineEncoding2.BaudRateBPS = 0;
+
+ /* Indicate endpoint configuration success or failure */
+ LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ * the device from the USB host before passing along unhandled control requests to the library for processing
+ * internally.
+ */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ /* Determine which interface's Line Coding data is being set from the wIndex parameter */
+ void* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? &LineEncoding1 : &LineEncoding2;
+
+ /* Process CDC specific control requests */
+ switch (USB_ControlRequest.bRequest)
+ {
+ case CDC_REQ_GetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ /* Write the line coding data to the control endpoint */
+ Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
+ Endpoint_ClearOUT();
+ }
+
+ break;
+ case CDC_REQ_SetLineEncoding:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ /* Read the line coding data in from the host into the global struct */
+ Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
+ Endpoint_ClearIN();
+ }
+
+ break;
+ case CDC_REQ_SetControlLineState:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+ Endpoint_ClearStatusStage();
+ }
+
+ break;
+ }
+}
+
+/** Function to manage CDC data transmission and reception to and from the host for the first CDC interface, which sends joystick
+ * movements to the host as ASCII strings.
+ */
+void CDC1_Task(void)
+{
+ char* ReportString = NULL;
+ uint8_t JoyStatus_LCL = Joystick_GetStatus();
+ static bool ActionSent = false;
+
+ /* Device must be connected and configured for the task to run */
+ if (USB_DeviceState != DEVICE_STATE_Configured)
+ return;
+
+ /* Determine if a joystick action has occurred */
+ if (JoyStatus_LCL & JOY_UP)
+ ReportString = "Joystick Up\r\n";
+ else if (JoyStatus_LCL & JOY_DOWN)
+ ReportString = "Joystick Down\r\n";
+ else if (JoyStatus_LCL & JOY_LEFT)
+ ReportString = "Joystick Left\r\n";
+ else if (JoyStatus_LCL & JOY_RIGHT)
+ ReportString = "Joystick Right\r\n";
+ else if (JoyStatus_LCL & JOY_PRESS)
+ ReportString = "Joystick Pressed\r\n";
+ else
+ ActionSent = false;
+
+ /* Flag management - Only allow one string to be sent per action */
+ if ((ReportString != NULL) && (ActionSent == false) && LineEncoding1.BaudRateBPS)
+ {
+ ActionSent = true;
+
+ /* Select the Serial Tx Endpoint */
+ Endpoint_SelectEndpoint(CDC1_TX_EPNUM);
+
+ /* Write the String to the Endpoint */
+ Endpoint_Write_Stream_LE(ReportString, strlen(ReportString), NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearIN();
+
+ /* Wait until the endpoint is ready for another packet */
+ Endpoint_WaitUntilReady();
+
+ /* Send an empty packet to ensure that the host does not buffer data sent to it */
+ Endpoint_ClearIN();
+ }
+
+ /* Select the Serial Rx Endpoint */
+ Endpoint_SelectEndpoint(CDC1_RX_EPNUM);
+
+ /* Throw away any received data from the host */
+ if (Endpoint_IsOUTReceived())
+ Endpoint_ClearOUT();
+}
+
+/** Function to manage CDC data transmission and reception to and from the host for the second CDC interface, which echoes back
+ * all data sent to it from the host.
+ */
+void CDC2_Task(void)
+{
+ /* Device must be connected and configured for the task to run */
+ if (USB_DeviceState != DEVICE_STATE_Configured)
+ return;
+
+ /* Select the Serial Rx Endpoint */
+ Endpoint_SelectEndpoint(CDC2_RX_EPNUM);
+
+ /* Check to see if any data has been received */
+ if (Endpoint_IsOUTReceived())
+ {
+ /* Create a temp buffer big enough to hold the incoming endpoint packet */
+ uint8_t Buffer[Endpoint_BytesInEndpoint()];
+
+ /* Remember how large the incoming packet is */
+ uint16_t DataLength = Endpoint_BytesInEndpoint();
+
+ /* Read in the incoming packet into the buffer */
+ Endpoint_Read_Stream_LE(&Buffer, DataLength, NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearOUT();
+
+ /* Select the Serial Tx Endpoint */
+ Endpoint_SelectEndpoint(CDC2_TX_EPNUM);
+
+ /* Write the received data to the endpoint */
+ Endpoint_Write_Stream_LE(&Buffer, DataLength, NULL);
+
+ /* Finalize the stream transfer to send the last packet */
+ Endpoint_ClearIN();
+
+ /* Wait until the endpoint is ready for the next packet */
+ Endpoint_WaitUntilReady();
+
+ /* Send an empty packet to prevent host buffering */
+ Endpoint_ClearIN();
+ }
+}
+
projects / pub / USBasp.git / blobdiff