X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/2440ca268ac444c1aed2441cefe9e25a767d961a..d1e52660368d34d693131f6aff3c8fd8584162e5:/Demos/Device/CDC/CDC.c?ds=inline diff --git a/Demos/Device/CDC/CDC.c b/Demos/Device/CDC/CDC.c index d7ebb9e6b..e6bc1a455 100644 --- a/Demos/Device/CDC/CDC.c +++ b/Demos/Device/CDC/CDC.c @@ -28,54 +28,42 @@ this software. */ -/** \file - * - * Main source file for the CDC demo. This file contains the main tasks of the demo and - * is responsible for the initial application hardware configuration. - */ - #include "CDC.h" -/* Scheduler Task List */ -TASK_LIST -{ - { .Task = USB_USBTask , .TaskStatus = TASK_STOP }, - { .Task = CDC_Task , .TaskStatus = TASK_STOP }, -}; +USB_ClassInfo_CDC_t VirtualSerial_CDC_Interface = + { + .ControlInterfaceNumber = 0, -/* Globals: */ -/** Contains the current baud rate and other settings of the 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 LineCoding = { .BaudRateBPS = 9600, - .CharFormat = OneStopBit, - .ParityType = Parity_None, - .DataBits = 8 }; + .DataINEndpointNumber = CDC_TX_EPNUM, + .DataINEndpointSize = CDC_TXRX_EPSIZE, -/** String to print through the virtual serial port when the joystick is pressed upwards. */ -char JoystickUpString[] = "Joystick Up\r\n"; + .DataOUTEndpointNumber = CDC_RX_EPNUM, + .DataOUTEndpointSize = CDC_TXRX_EPSIZE, -/** String to print through the virtual serial port when the joystick is pressed downward. */ -char JoystickDownString[] = "Joystick Down\r\n"; + .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM, + .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE, + }; -/** String to print through the virtual serial port when the joystick is pressed left. */ -char JoystickLeftString[] = "Joystick Left\r\n"; +int main(void) +{ + SetupHardware(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); -/** String to print through the virtual serial port when the joystick is pressed right. */ -char JoystickRightString[] = "Joystick Right\r\n"; + for (;;) + { + CheckJoystickMovement(); + + uint16_t BytesToDiscard = USB_CDC_BytesReceived(&VirtualSerial_CDC_Interface); + while (BytesToDiscard--) + USB_CDC_ReceiveByte(&VirtualSerial_CDC_Interface); -/** String to print through the virtual serial port when the joystick is pressed inwards. */ -char JoystickPressedString[] = "Joystick Pressed\r\n"; + USB_CDC_USBTask(&VirtualSerial_CDC_Interface); + USB_USBTask(); + } +} -/** 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) +void SetupHardware(void) { /* Disable watchdog if enabled by bootloader/fuses */ MCUSR &= ~(1 << WDRF); @@ -87,235 +75,64 @@ int main(void) /* Hardware Initialization */ Joystick_Init(); LEDs_Init(); - - /* Indicate USB not ready */ - UpdateStatus(Status_USBNotReady); - - /* Initialize Scheduler so that it can be used */ - Scheduler_Init(); - - /* Initialize USB Subsystem */ USB_Init(); - - /* Scheduling - routine never returns, so put this last in the main function */ - Scheduler_Start(); -} - -/** 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_Connect(void) -{ - /* Start USB management task */ - Scheduler_SetTaskMode(USB_USBTask, TASK_RUN); - - /* Indicate USB enumerating */ - UpdateStatus(Status_USBEnumerating); -} - -/** 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_Disconnect(void) -{ - /* Stop running CDC and USB management tasks */ - Scheduler_SetTaskMode(CDC_Task, TASK_STOP); - Scheduler_SetTaskMode(USB_USBTask, TASK_STOP); - - /* Indicate USB not ready */ - UpdateStatus(Status_USBNotReady); -} - -/** 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 task started. - */ -void EVENT_USB_ConfigurationChanged(void) -{ - /* Setup CDC Notification, Rx and Tx Endpoints */ - Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT, - ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE, - ENDPOINT_BANK_SINGLE); - - Endpoint_ConfigureEndpoint(CDC_TX_EPNUM, EP_TYPE_BULK, - ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE, - ENDPOINT_BANK_SINGLE); - - Endpoint_ConfigureEndpoint(CDC_RX_EPNUM, EP_TYPE_BULK, - ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE, - ENDPOINT_BANK_SINGLE); - - /* Indicate USB connected and ready */ - UpdateStatus(Status_USBReady); - - /* Start CDC task */ - Scheduler_SetTaskMode(CDC_Task, TASK_RUN); -} - -/** Event handler for the USB_UnhandledControlPacket 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_UnhandledControlPacket(void) -{ - uint8_t* LineCodingData = (uint8_t*)&LineCoding; - - /* 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(LineCodingData, 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(LineCodingData, 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(); - - /* NOTE: Here you can read in the line state mask from the host, to get the current state of the output handshake - lines. The mask is read in from the wValue parameter in USB_ControlRequest, and can be masked against the - CONTROL_LINE_OUT_* masks to determine the RTS and DTR line states using the following code: - */ - - /* Acknowledge status stage */ - while (!(Endpoint_IsINReady())); - Endpoint_ClearIN(); - } - - break; - } } -/** 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 CDC_StatusCodes_t enum - */ -void UpdateStatus(uint8_t CurrentStatus) +void CheckJoystickMovement(void) { - 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 | LEDS_LED4); - break; - } + uint8_t JoyStatus_LCL = Joystick_GetStatus(); + char* ReportString = NULL; + static bool ActionSent = false; - /* Set the board LEDs to the new LED mask */ - LEDs_SetAllLEDs(LEDMask); -} - -/** Function to manage CDC data transmission and reception to and from the host. */ -TASK(CDC_Task) -{ - char* ReportString = NULL; - uint8_t JoyStatus_LCL = Joystick_GetStatus(); - static bool ActionSent = false; - -#if 0 - /* NOTE: Here you can use the notification endpoint to send back line state changes to the host, for the special RS-232 - handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code: - */ - USB_Notification_Header_t Notification = (USB_Notification_Header_t) + char* JoystickStrings[] = { - .NotificationType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE), - .Notification = NOTIF_SerialState, - .wValue = 0, - .wIndex = 0, - .wLength = sizeof(uint16_t), + "Joystick Up\r\n", + "Joystick Down\r\n", + "Joystick Left\r\n", + "Joystick Right\r\n", + "Joystick Pressed\r\n", }; - - uint16_t LineStateMask; - - // Set LineStateMask here to a mask of CONTROL_LINE_IN_* masks to set the input handshake line states to send to the host - - Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPNUM); - Endpoint_Write_Stream_LE(&Notification, sizeof(Notification)); - Endpoint_Write_Stream_LE(&LineStateMask, sizeof(LineStateMask)); - Endpoint_ClearIN(); -#endif - /* Determine if a joystick action has occurred */ if (JoyStatus_LCL & JOY_UP) - ReportString = JoystickUpString; + ReportString = JoystickStrings[0]; else if (JoyStatus_LCL & JOY_DOWN) - ReportString = JoystickDownString; + ReportString = JoystickStrings[1]; else if (JoyStatus_LCL & JOY_LEFT) - ReportString = JoystickLeftString; + ReportString = JoystickStrings[2]; else if (JoyStatus_LCL & JOY_RIGHT) - ReportString = JoystickRightString; + ReportString = JoystickStrings[3]; else if (JoyStatus_LCL & JOY_PRESS) - ReportString = JoystickPressedString; - - /* Flag management - Only allow one string to be sent per action */ - if (ReportString == NULL) - { - ActionSent = false; - } - else if (ActionSent == false) + ReportString = JoystickStrings[4]; + else + ActionSent = false; + + if ((ReportString != NULL) && (ActionSent == false)) { ActionSent = true; + + USB_CDC_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString)); + } +} - /* Select the Serial Tx Endpoint */ - Endpoint_SelectEndpoint(CDC_TX_EPNUM); +void EVENT_USB_Connect(void) +{ + LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} - /* Write the String to the Endpoint */ - Endpoint_Write_Stream_LE(ReportString, strlen(ReportString)); - - /* Remember if the packet to send completely fills the endpoint */ - bool IsFull = (Endpoint_BytesInEndpoint() == CDC_TXRX_EPSIZE); +void EVENT_USB_Disconnect(void) +{ + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} - /* Finalize the stream transfer to send the last packet */ - Endpoint_ClearIN(); +void EVENT_USB_ConfigurationChanged(void) +{ + LEDs_SetAllLEDs(LEDMASK_USB_READY); - /* If the last packet filled the endpoint, send an empty packet to release the buffer on - * the receiver (otherwise all data will be cached until a non-full packet is received) */ - if (IsFull) - { - /* Wait until the endpoint is ready for another packet */ - while (!(Endpoint_IsINReady())); - - /* Send an empty packet to ensure that the host does not buffer data sent to it */ - Endpoint_ClearIN(); - } - } + if (!(USB_CDC_ConfigureEndpoints(&VirtualSerial_CDC_Interface))) + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +} - /* Select the Serial Rx Endpoint */ - Endpoint_SelectEndpoint(CDC_RX_EPNUM); - - /* Throw away any received data from the host */ - if (Endpoint_IsOUTReceived()) - Endpoint_ClearOUT(); +void EVENT_USB_UnhandledControlPacket(void) +{ + USB_CDC_ProcessControlPacket(&VirtualSerial_CDC_Interface); }