diff options
Diffstat (limited to 'Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c')
| -rw-r--r-- | Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c | 652 |
1 files changed, 326 insertions, 326 deletions
diff --git a/Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c b/Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c index 5c90c6ab8..29fd57f29 100644 --- a/Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c +++ b/Demos/Device/LowLevel/DualVirtualSerial/DualVirtualSerial.c @@ -1,326 +1,326 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 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.
- */
-CDC_Line_Coding_t LineEncoding1 = { .BaudRateBPS = 0,
- .CharFormat = OneStopBit,
- .ParityType = 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.
- */
-CDC_Line_Coding_t LineEncoding2 = { .BaudRateBPS = 0,
- .CharFormat = OneStopBit,
- .ParityType = 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)
-{
- /* Indicate USB connected and ready */
- LEDs_SetAllLEDs(LEDMASK_USB_READY);
-
- /* Setup CDC Notification, Rx and Tx Endpoints for the first CDC */
- if (!(Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- if (!(Endpoint_ConfigureEndpoint(CDC1_TX_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- if (!(Endpoint_ConfigureEndpoint(CDC1_RX_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- /* Setup CDC Notification, Rx and Tx Endpoints for the second CDC */
- if (!(Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- if (!(Endpoint_ConfigureEndpoint(CDC2_TX_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- if (!(Endpoint_ConfigureEndpoint(CDC2_RX_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,
- ENDPOINT_BANK_SINGLE)))
- {
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- }
-
- /* Reset line encoding baud rates so that the host knows to send new values */
- LineEncoding1.BaudRateBPS = 0;
- LineEncoding2.BaudRateBPS = 0;
-}
-
-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific
- * control requests that are not handled internally by the USB library (including the CDC control commands,
- * which are all issued via the control endpoint), so that they can be handled appropriately for the application.
- */
-void EVENT_USB_Device_UnhandledControlRequest(void)
-{
- /* Determine which interface's Line Coding data is being set from the wIndex parameter */
- uint8_t* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? (uint8_t*)&LineEncoding1 : (uint8_t*)&LineEncoding2;
-
- /* Process CDC specific control requests */
- switch (USB_ControlRequest.bRequest)
- {
- case REQ_GetLineEncoding:
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- /* Acknowledge the SETUP packet, ready for data transfer */
- Endpoint_ClearSETUP();
-
- /* Write the line coding data to the control endpoint */
- Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t));
-
- /* Finalize the stream transfer to send the last packet or clear the host abort */
- Endpoint_ClearOUT();
- }
-
- break;
- case REQ_SetLineEncoding:
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- /* Acknowledge the SETUP packet, ready for data transfer */
- Endpoint_ClearSETUP();
-
- /* Read the line coding data in from the host into the global struct */
- Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t));
-
- /* Finalize the stream transfer to clear the last packet from the host */
- Endpoint_ClearIN();
- }
-
- break;
- case REQ_SetControlLineState:
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- /* Acknowledge the SETUP packet, ready for data transfer */
- 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));
-
- /* 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);
-
- /* 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);
-
- /* 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();
- }
-}
+/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 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. + */ +CDC_Line_Coding_t LineEncoding1 = { .BaudRateBPS = 0, + .CharFormat = OneStopBit, + .ParityType = 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. + */ +CDC_Line_Coding_t LineEncoding2 = { .BaudRateBPS = 0, + .CharFormat = OneStopBit, + .ParityType = 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) +{ + /* Indicate USB connected and ready */ + LEDs_SetAllLEDs(LEDMASK_USB_READY); + + /* Setup CDC Notification, Rx and Tx Endpoints for the first CDC */ + if (!(Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, + ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + if (!(Endpoint_ConfigureEndpoint(CDC1_TX_EPNUM, EP_TYPE_BULK, + ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + if (!(Endpoint_ConfigureEndpoint(CDC1_RX_EPNUM, EP_TYPE_BULK, + ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + /* Setup CDC Notification, Rx and Tx Endpoints for the second CDC */ + if (!(Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, + ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + if (!(Endpoint_ConfigureEndpoint(CDC2_TX_EPNUM, EP_TYPE_BULK, + ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + if (!(Endpoint_ConfigureEndpoint(CDC2_RX_EPNUM, EP_TYPE_BULK, + ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE, + ENDPOINT_BANK_SINGLE))) + { + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + } + + /* Reset line encoding baud rates so that the host knows to send new values */ + LineEncoding1.BaudRateBPS = 0; + LineEncoding2.BaudRateBPS = 0; +} + +/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific + * control requests that are not handled internally by the USB library (including the CDC control commands, + * which are all issued via the control endpoint), so that they can be handled appropriately for the application. + */ +void EVENT_USB_Device_UnhandledControlRequest(void) +{ + /* Determine which interface's Line Coding data is being set from the wIndex parameter */ + uint8_t* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? (uint8_t*)&LineEncoding1 : (uint8_t*)&LineEncoding2; + + /* Process CDC specific control requests */ + switch (USB_ControlRequest.bRequest) + { + case REQ_GetLineEncoding: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + /* Acknowledge the SETUP packet, ready for data transfer */ + Endpoint_ClearSETUP(); + + /* Write the line coding data to the control endpoint */ + Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t)); + + /* Finalize the stream transfer to send the last packet or clear the host abort */ + Endpoint_ClearOUT(); + } + + break; + case REQ_SetLineEncoding: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + /* Acknowledge the SETUP packet, ready for data transfer */ + Endpoint_ClearSETUP(); + + /* Read the line coding data in from the host into the global struct */ + Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_Line_Coding_t)); + + /* Finalize the stream transfer to clear the last packet from the host */ + Endpoint_ClearIN(); + } + + break; + case REQ_SetControlLineState: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + /* Acknowledge the SETUP packet, ready for data transfer */ + 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)); + + /* 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); + + /* 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); + + /* 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(); + } +} |