Added multiple Report ID support to the HID class driver. Removed OUT endpoint suppor...

[pub/USBasp.git] / Demos / Device / USBtoSerial / USBtoSerial.c

diff --git a/Demos/Device/USBtoSerial/USBtoSerial.c b/Demos/Device/USBtoSerial/USBtoSerial.c
index 1d238aa..85826c2 100644 (file)
--- a/Demos/Device/USBtoSerial/USBtoSerial.c
+++ b/Demos/Device/USBtoSerial/USBtoSerial.c
@@ -28,371 +28,148 @@
   this software.\r
 */\r
 \r
   this software.\r
 */\r
 \r

-#include "USBtoSerial.h"\r
-\r
-/* Scheduler Task List */\r
-TASK_LIST\r
-{\r
-       { Task: USB_USBTask          , TaskStatus: TASK_STOP },\r
-       { Task: CDC_Task             , TaskStatus: TASK_STOP },\r
-};\r
-\r
-/* Globals: */\r
-/** Contains the current baud rate and other settings of the virtual serial port.\r
+/** \file\r

  *\r
  *\r

- *  These values are set by the host via a class-specific request, and the physical USART should be reconfigured to match the\r
- *  new settings each time they are changed by the host.\r
+ *  Main source file for the USBtoSerial demo. This file contains the main tasks of\r
+ *  the demo and is responsible for the initial application hardware configuration.\r

  */\r
  */\r

-CDC_Line_Coding_t LineCoding = { BaudRateBPS: 9600,\r
-                                 CharFormat:  OneStopBit,\r
-                                 ParityType:  Parity_None,\r
-                                 DataBits:    8            };\r

 \r
 \r

-/** Ring (circular) buffer to hold the RX data - data from the host to the attached device on the serial port. */\r
+#include "USBtoSerial.h"\r
+\r
+/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */\r

 RingBuff_t Rx_Buffer;\r
 \r
 RingBuff_t Rx_Buffer;\r
 \r

-/** Ring (circular) buffer to hold the TX data - data from the attached device on the serial port to the host. */\r
+/** Circular buffer to hold data from the serial port before it is sent to the host. */\r

 RingBuff_t Tx_Buffer;\r
 \r
 RingBuff_t Tx_Buffer;\r
 \r

-/** Flag to indicate if the USART is currently transmitting data from the Rx_Buffer circular buffer. */\r
-volatile bool Transmitting = false;\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
+/** LUFA CDC Class driver interface configuration and state information. This structure is\r
+ *  passed to all CDC Class driver functions, so that multiple instances of the same class\r
+ *  within a device can be differentiated from one another.\r

  */\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
-       LEDs_Init();\r
-       ReconfigureUSART();\r
-       \r
-       /* Ring buffer Initialization */\r
-       Buffer_Initialize(&Rx_Buffer);\r
-       Buffer_Initialize(&Tx_Buffer);\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
+USB_ClassInfo_CDC_t VirtualSerial_CDC_Interface =\r
+       {\r
+               .ControlInterfaceNumber     = 0,\r

 \r
 \r

-       /* Scheduling - routine never returns, so put this last in the main function */\r
-       Scheduler_Start();\r
-}\r
+               .DataINEndpointNumber       = CDC_TX_EPNUM,\r
+               .DataINEndpointSize         = CDC_TXRX_EPSIZE,\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
-EVENT_HANDLER(USB_Connect)\r
-{\r
-       /* Start USB management task */\r
-       Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);\r
+               .DataOUTEndpointNumber      = CDC_RX_EPNUM,\r
+               .DataOUTEndpointSize        = CDC_TXRX_EPSIZE,\r

 \r
 \r

-       /* Indicate USB enumerating */\r
-       UpdateStatus(Status_USBEnumerating);\r
-}\r
+               .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,\r
+               .NotificationEndpointSize   = CDC_NOTIFICATION_EPSIZE,\r
+       };\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
+/** Main program entry point. This routine contains the overall program flow, including initial\r
+ *  setup of all components and the main program loop.\r

  */\r
  */\r

-EVENT_HANDLER(USB_Disconnect)\r
+int main(void)\r

 {\r
 {\r

-       /* Stop running CDC and USB management tasks */\r
-       Scheduler_SetTaskMode(CDC_Task, TASK_STOP);\r
-       Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
+       SetupHardware();\r

        \r
        \r

-       /* Reset Tx and Rx buffers, device disconnected */\r

        Buffer_Initialize(&Rx_Buffer);\r
        Buffer_Initialize(&Tx_Buffer);\r
 \r
        Buffer_Initialize(&Rx_Buffer);\r
        Buffer_Initialize(&Tx_Buffer);\r
 \r

-       /* Indicate USB not ready */\r
-       UpdateStatus(Status_USBNotReady);\r
+       LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
+\r
+       for (;;)\r
+       {\r
+               for (uint8_t DataBytesRem = USB_CDC_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)\r
+               {\r
+                       if (!(BUFF_STATICSIZE - Rx_Buffer.Elements))\r
+                         break;\r
+                         \r
+                       Buffer_StoreElement(&Rx_Buffer, USB_CDC_ReceiveByte(&VirtualSerial_CDC_Interface));\r
+               }\r
+               \r
+               if (Tx_Buffer.Elements)\r
+                 USB_CDC_SendByte(&VirtualSerial_CDC_Interface, Buffer_GetElement(&Rx_Buffer));\r
+                 \r
+               if (Rx_Buffer.Elements)\r
+                 Serial_TxByte(Buffer_GetElement(&Rx_Buffer));\r
+               \r
+               USB_CDC_USBTask(&VirtualSerial_CDC_Interface);\r
+               USB_USBTask();\r
+       }\r

 }\r
 \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 task started.\r
- */\r
-EVENT_HANDLER(USB_ConfigurationChanged)\r
+/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
+void SetupHardware(void)\r

 {\r
 {\r

-       /* Setup CDC Notification, Rx and Tx Endpoints */\r
-       Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
-                                      ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
-                                  ENDPOINT_BANK_SINGLE);\r
-\r
-       Endpoint_ConfigureEndpoint(CDC_TX_EPNUM, EP_TYPE_BULK,\r
-                                      ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
-                                  ENDPOINT_BANK_SINGLE);\r
-\r
-       Endpoint_ConfigureEndpoint(CDC_RX_EPNUM, EP_TYPE_BULK,\r
-                                      ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
-                                  ENDPOINT_BANK_SINGLE);\r
+       /* Disable watchdog if enabled by bootloader/fuses */\r
+       MCUSR &= ~(1 << WDRF);\r
+       wdt_disable();\r

 \r
 \r

-       /* Indicate USB connected and ready */\r
-       UpdateStatus(Status_USBReady);\r
+       /* Disable clock division */\r
+       clock_prescale_set(clock_div_1);\r

 \r
 \r

-       /* Start CDC task */\r
-       Scheduler_SetTaskMode(CDC_Task, TASK_RUN);\r
+       /* Hardware Initialization */\r
+       Joystick_Init();\r
+       LEDs_Init();\r
+       USB_Init();\r

 }\r
 \r
 }\r
 \r

-/** Event handler for the USB_UnhandledControlPacket 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
-EVENT_HANDLER(USB_UnhandledControlPacket)\r
+/** Event handler for the library USB Connection event. */\r
+void EVENT_USB_Connect(void)\r

 {\r
 {\r

-       uint8_t* LineCodingData = (uint8_t*)&LineCoding;\r
-\r
-       /* Process CDC specific control requests */\r
-       switch (bRequest)\r
-       {\r
-               case REQ_GetLineEncoding:\r
-                       if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {       \r
-                               /* Acknowledge the SETUP packet, ready for data transfer */\r
-                               Endpoint_ClearControlSETUP();\r
-\r
-                               /* Write the line coding data to the control endpoint */\r
-                               Endpoint_Write_Control_Stream_LE(LineCodingData, sizeof(LineCoding));\r
-                               \r
-                               /* Finalize the stream transfer to send the last packet or clear the host abort */\r
-                               Endpoint_ClearControlOUT();\r
-                       }\r
-                       \r
-                       break;\r
-               case REQ_SetLineEncoding:\r
-                       if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-                               /* Acknowledge the SETUP packet, ready for data transfer */\r
-                               Endpoint_ClearControlSETUP();\r
-\r
-                               /* Read the line coding data in from the host into the global struct */\r
-                               Endpoint_Read_Control_Stream_LE(LineCodingData, sizeof(LineCoding));\r
-\r
-                               /* Finalize the stream transfer to clear the last packet from the host */\r
-                               Endpoint_ClearControlIN();\r
-                               \r
-                               /* Reconfigure the USART with the new settings */\r
-                               ReconfigureUSART();\r
-                       }\r
-       \r
-                       break;\r
-               case REQ_SetControlLineState:\r
-                       if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-#if 0\r
-                               /* NOTE: Here you can read in the line state mask from the host, to get the current state of the output handshake\r
-                                        lines. The mask is read in from the wValue parameter, and can be masked against the CONTROL_LINE_OUT_* masks\r
-                                        to determine the RTS and DTR line states using the following code:\r
-                               */\r
-\r
-                               uint16_t wIndex = Endpoint_Read_Word_LE();\r
-                                       \r
-                               // Do something with the given line states in wIndex\r
-#endif\r
-                               \r
-                               /* Acknowledge the SETUP packet, ready for data transfer */\r
-                               Endpoint_ClearControlSETUP();\r
-                               \r
-                               /* Acknowledge status stage */\r
-                               while (!(Endpoint_IsINReady()));\r
-                               Endpoint_ClearControlIN();\r
-                       }\r
-       \r
-                       break;\r
-       }\r
+       LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r

 }\r
 \r
 }\r
 \r

-/** Task to manage CDC data transmission and reception to and from the host, from and to the physical USART. */\r
-TASK(CDC_Task)\r
+/** Event handler for the library USB Disconnection event. */\r
+void EVENT_USB_Disconnect(void)\r

 {\r
 {\r

-       if (USB_IsConnected)\r
-       {\r
-#if 0\r
-               /* NOTE: Here you can use the notification endpoint to send back line state changes to the host, for the special RS-232\r
-                                handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code:\r
-               */\r
-\r
-               USB_Notification_Header_t Notification = (USB_Notification_Header_t)\r
-                       {\r
-                               NotificationType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),\r
-                               Notification:     NOTIF_SerialState,\r
-                               wValue:           0,\r
-                               wIndex:           0,\r
-                               wLength:          sizeof(uint16_t),\r
-                       };\r
-                       \r
-               uint16_t LineStateMask;\r
-               \r
-               // Set LineStateMask here to a mask of CONTROL_LINE_IN_* masks to set the input handshake line states to send to the host\r
-               \r
-               Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPNUM);\r
-               Endpoint_Write_Stream_LE(&Notification, sizeof(Notification));\r
-               Endpoint_Write_Stream_LE(&LineStateMask, sizeof(LineStateMask));\r
-               Endpoint_ClearIN();\r
-#endif\r
-\r
-               /* Select the Serial Rx Endpoint */\r
-               Endpoint_SelectEndpoint(CDC_RX_EPNUM);\r
-               \r
-               if (Endpoint_IsOUTReceived())\r
-               {\r
-                       /* Read the bytes in from the endpoint into the buffer while space is available */\r
-                       while (Endpoint_BytesInEndpoint() && (BUFF_STATICSIZE - Rx_Buffer.Elements))\r
-                       {\r
-                               /* Store each character from the endpoint */\r
-                               Buffer_StoreElement(&Rx_Buffer, Endpoint_Read_Byte());\r
-                       }\r
-                       \r
-                       /* Check to see if all bytes in the current packet have been read */\r
-                       if (!(Endpoint_BytesInEndpoint()))\r
-                       {\r
-                               /* Clear the endpoint buffer */\r
-                               Endpoint_ClearOUT();\r
-                       }\r
-               }\r
-               \r
-               /* Check if Rx buffer contains data */\r
-               if (Rx_Buffer.Elements)\r
-               {\r
-                       /* Initiate the transmission of the buffer contents if USART idle */\r
-                       if (!(Transmitting))\r
-                       {\r
-                               Transmitting = true;\r
-                               Serial_TxByte(Buffer_GetElement(&Rx_Buffer));\r
-                       }\r
-               }\r
-\r
-               /* Select the Serial Tx Endpoint */\r
-               Endpoint_SelectEndpoint(CDC_TX_EPNUM);\r
-\r
-               /* Check if the Tx buffer contains anything to be sent to the host */\r
-               if (Tx_Buffer.Elements)\r
-               {\r
-                       /* Wait until Serial Tx Endpoint Ready for Read/Write */\r
-                       while (!(Endpoint_IsReadWriteAllowed()));\r
-                       \r
-                       /* Write the bytes from the buffer to the endpoint while space is available */\r
-                       while (Tx_Buffer.Elements && (Endpoint_BytesInEndpoint() < CDC_TXRX_EPSIZE))\r
-                       {\r
-                               /* Write each byte retreived from the buffer to the endpoint */\r
-                               Endpoint_Write_Byte(Buffer_GetElement(&Tx_Buffer));\r
-                       }\r
-                       \r
-                       /* Remember if the packet to send completely fills the endpoint */\r
-                       bool IsFull = (Endpoint_BytesInEndpoint() == CDC_TXRX_EPSIZE);\r
-                       \r
-                       /* Send the data */\r
-                       Endpoint_ClearIN();\r
+       LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
+}\r

 \r
 \r

-                       /* If no more data to send and the last packet filled the endpoint, send an empty packet to release\r
-                        * the buffer on the receiver (otherwise all data will be cached until a non-full packet is received) */\r
-                       if (IsFull && !(Tx_Buffer.Elements))\r
-                       {\r
-                               /* Wait until Serial Tx Endpoint Ready for Read/Write */\r
-                               while (!(Endpoint_IsReadWriteAllowed()));\r
+/** Event handler for the library USB Configuration Changed event. */\r
+void EVENT_USB_ConfigurationChanged(void)\r
+{\r
+       LEDs_SetAllLEDs(LEDMASK_USB_READY);\r

 \r
 \r

-                               /* Send an empty packet to terminate the transfer */\r
-                               Endpoint_ClearIN();\r
-                       }\r
-               }\r
-       }\r
+       if (!(USB_CDC_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))\r
+         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r

 }\r
 \r
 }\r
 \r

-/** ISR to handle the USART transmit complete interrupt, fired each time the USART has sent a character. This reloads the USART\r
- *  data register with the next byte from the Rx_Buffer circular buffer if a character is available, or stops the transmission if\r
- *  the buffer is currently empty.\r
- */\r
-ISR(USART1_TX_vect, ISR_BLOCK)\r
+/** Event handler for the library USB Unhandled Control Packet event. */\r
+void EVENT_USB_UnhandledControlPacket(void)\r

 {\r
 {\r

-       /* Send next character if available */\r
-       if (Rx_Buffer.Elements)\r
-         UDR1 = Buffer_GetElement(&Rx_Buffer);\r
-       else\r
-         Transmitting = false;\r
+       USB_CDC_ProcessControlPacket(&VirtualSerial_CDC_Interface);\r

 }\r
 \r
 }\r
 \r

-/** ISR to handle the USART receive complete interrupt, fired each time the USART has received a character. This stores the received\r
- *  character into the Tx_Buffer circular buffer for later transmission to the host.\r
+/** ISR to manage the reception of data from the serial port, placing received bytes into a circular buffer\r
+ *  for later transmission to the host.\r

  */\r
 ISR(USART1_RX_vect, ISR_BLOCK)\r
 {\r
  */\r
 ISR(USART1_RX_vect, ISR_BLOCK)\r
 {\r

-       /* Only store received characters if the USB interface is connected */\r

        if (USB_IsConnected)\r
        if (USB_IsConnected)\r

-       {\r
-               /* Character received, store it into the buffer */\r
-               Buffer_StoreElement(&Tx_Buffer, UDR1);\r
-       }\r
+         Buffer_StoreElement(&Tx_Buffer, UDR1);\r

 }\r
 \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
+/** Event handler for the CDC Class driver Line Encoding Changed event.\r

  *\r
  *\r

- *  \param CurrentStatus  Current status of the system, from the USBtoSerial_StatusCodes_t enum\r
+ *  \param CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced\r

  */\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 | LEDS_LED4);\r
-                       break;\r
-       }\r
-       \r
-       /* Set the board LEDs to the new LED mask */\r
-       LEDs_SetAllLEDs(LEDMask);\r
-}\r
-\r
-/** Reconfigures the USART to match the current serial port settings issued by the host as closely as possible. */\r
-void ReconfigureUSART(void)\r
+void EVENT_USB_CDC_LineEncodingChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo)\r

 {\r
        uint8_t ConfigMask = 0;\r
 \r
 {\r
        uint8_t ConfigMask = 0;\r
 \r

-       /* Determine parity - non odd/even parity mode defaults to no parity */\r
-       if (LineCoding.ParityType == Parity_Odd)\r
+       if (CDCInterfaceInfo->LineEncoding.ParityType == CDC_PARITY_Odd)\r

          ConfigMask = ((1 << UPM11) | (1 << UPM10));\r
          ConfigMask = ((1 << UPM11) | (1 << UPM10));\r

-       else if (LineCoding.ParityType == Parity_Even)\r
+       else if (CDCInterfaceInfo->LineEncoding.ParityType == CDC_PARITY_Even)\r

          ConfigMask = (1 << UPM11);\r
 \r
          ConfigMask = (1 << UPM11);\r
 \r

-       /* Determine stop bits - 1.5 stop bits is set as 1 stop bit due to hardware limitations */\r
-       if (LineCoding.CharFormat == TwoStopBits)\r
+       if (CDCInterfaceInfo->LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)\r

          ConfigMask |= (1 << USBS1);\r
 \r
          ConfigMask |= (1 << USBS1);\r
 \r

-       /* Determine data size - 5, 6, 7, or 8 bits are supported */\r
-       if (LineCoding.DataBits == 6)\r
+       if (CDCInterfaceInfo->LineEncoding.DataBits == 6)\r

          ConfigMask |= (1 << UCSZ10);\r
          ConfigMask |= (1 << UCSZ10);\r

-       else if (LineCoding.DataBits == 7)\r
+       else if (CDCInterfaceInfo->LineEncoding.DataBits == 7)\r

          ConfigMask |= (1 << UCSZ11);\r
          ConfigMask |= (1 << UCSZ11);\r

-       else if (LineCoding.DataBits == 8)\r
+       else if (CDCInterfaceInfo->LineEncoding.DataBits == 8)\r

          ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));\r
        \r
          ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));\r
        \r

-       /* Enable double speed, gives better error percentages at 8MHz */\r
-       UCSR1A = (1 << U2X1);\r
-       \r
-       /* Enable transmit and receive modules and interrupts */\r
-       UCSR1B = ((1 << TXCIE1) | (1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));\r
-\r
-       /* Set the USART mode to the mask generated by the Line Coding options */\r
-       UCSR1C = ConfigMask;\r
-       \r
-       /* Set the USART baud rate register to the desired baud rate value */\r
-       UBRR1  = SERIAL_2X_UBBRVAL((uint16_t)LineCoding.BaudRateBPS);\r
+       UCSR1A = (1 << U2X1);   \r
+       UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));\r
+       UCSR1C = ConfigMask;    \r
+       UBRR1  = SERIAL_2X_UBBRVAL((uint16_t)CDCInterfaceInfo->LineEncoding.BaudRateBPS);\r

 }\r
 }\r