Oops - fix broken SPI driver due to missing bit inversion on a port mask.

[pub/USBasp.git] / Projects / XPLAINBridge / XPLAINBridge.c

diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c
index 308c2ab..24aa383 100644 (file)
--- a/Projects/XPLAINBridge/XPLAINBridge.c
+++ b/Projects/XPLAINBridge/XPLAINBridge.c
@@ -1,7 +1,7 @@
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.

-              
+

   dean [at] fourwalledcubicle [dot] com
       www.fourwalledcubicle.com
 */
   dean [at] fourwalledcubicle [dot] com
       www.fourwalledcubicle.com
 */


@@ -9,13 +9,13 @@
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 

-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this

   software and its documentation for any purpose is hereby granted
   software and its documentation for any purpose is hereby granted

-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in

   all copies and that both that the copyright notice and this
   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 
+  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 without specific, written prior permission.
 
   The author disclaim all warranties with regard to this


@@ -36,8 +36,8 @@
 
 #include "XPLAINBridge.h"
 
 
 #include "XPLAINBridge.h"
 

-/* Current firmware mode, making the device behave as either a programmer or a USART bridge */
-bool CurrentFirmwareMode = MODE_PDI_PROGRAMMER;
+/** Current firmware mode, making the device behave as either a programmer or a USART bridge */
+bool CurrentFirmwareMode = MODE_USART_BRIDGE;

 
 /** LUFA CDC Class driver interface configuration and state information. This structure is
  *  passed to all CDC Class driver functions, so that multiple instances of the same class
 
 /** LUFA CDC Class driver interface configuration and state information. This structure is
  *  passed to all CDC Class driver functions, so that multiple instances of the same class


@@ -45,7 +45,7 @@ bool CurrentFirmwareMode = MODE_PDI_PROGRAMMER;
  */
 USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
        {
  */
 USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
        {

-               .Config = 
+               .Config =

                        {
                                .ControlInterfaceNumber         = 0,
 
                        {
                                .ControlInterfaceNumber         = 0,
 


@@ -76,17 +76,14 @@ RingBuff_t UARTtoUSB_Buffer;
 int main(void)
 {
        SetupHardware();
 int main(void)
 {
        SetupHardware();

-       
-       RingBuffer_InitBuffer(&USBtoUART_Buffer);
-       RingBuffer_InitBuffer(&UARTtoUSB_Buffer);
-       
+

        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
        sei();
 
        for (;;)
        {
                if (CurrentFirmwareMode == MODE_USART_BRIDGE)
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
        sei();
 
        for (;;)
        {
                if (CurrentFirmwareMode == MODE_USART_BRIDGE)

-                 USARTBridge_Task();
+                 UARTBridge_Task();

                else
                  AVRISP_Task();
 
                else
                  AVRISP_Task();
 


@@ -100,8 +97,10 @@ void AVRISP_Task(void)
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return;
 
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return;
 

+       V2Params_UpdateParamValues();
+

        Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);
        Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);

-       
+

        /* Check to see if a V2 Protocol command has been received */
        if (Endpoint_IsOUTReceived())
        {
        /* Check to see if a V2 Protocol command has been received */
        if (Endpoint_IsOUTReceived())
        {


@@ -114,20 +113,28 @@ void AVRISP_Task(void)
        }
 }
 
        }
 }
 

-void USARTBridge_Task(void)
+void UARTBridge_Task(void)

 {
        /* Must be in the configured state for the USART Bridge code to process data */
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return;
 
        /* Read bytes from the USB OUT endpoint into the UART transmit buffer */
 {
        /* Must be in the configured state for the USART Bridge code to process data */
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return;
 
        /* Read bytes from the USB OUT endpoint into the UART transmit buffer */

-       for (uint8_t DataBytesRem = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)
-         RingBuffer_Insert(&USBtoUART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
-       
-       /* Read bytes from the UART receive buffer into the USB IN endpoint */
-       if (UARTtoUSB_Buffer.Count)
-         CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer));
-         
+       int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+       if (!(ReceivedByte < 0) && !(RingBuffer_IsFull(&USBtoUART_Buffer)))
+         RingBuffer_Insert(&USBtoUART_Buffer, ReceivedByte);
+
+       /* Check if the UART receive buffer flush timer has expired or buffer is nearly full */
+       RingBuff_Count_t BufferCount = RingBuffer_GetCount(&UARTtoUSB_Buffer);
+       if ((TIFR0 & (1 << TOV0)) || (BufferCount > 200))
+       {
+               TIFR0 |= (1 << TOV0);
+
+               /* Read bytes from the UART receive buffer into the USB IN endpoint */
+               while (BufferCount--)
+                 CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer));
+       }
+

        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 }
 
        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 }
 


@@ -145,18 +152,17 @@ void SetupHardware(void)
        SoftUART_Init();
        LEDs_Init();
        USB_Init();
        SoftUART_Init();
        LEDs_Init();
        USB_Init();

-       V2Protocol_Init();
-       
+

        /* Disable JTAG debugging */
        MCUCR |= (1 << JTD);
        MCUCR |= (1 << JTD);
 
        /* Disable JTAG debugging */
        MCUCR |= (1 << JTD);
        MCUCR |= (1 << JTD);
 

-       /* Enable pullup on the JTAG TDI pin so we can use it to select the mode */
+       /* Enable pull-up on the JTAG TDI pin so we can use it to select the mode */

        PORTF |= (1 << 7);
        _delay_ms(10);
 
        /* Select the firmware mode based on the JTD pin's value */
        PORTF |= (1 << 7);
        _delay_ms(10);
 
        /* Select the firmware mode based on the JTD pin's value */

-       CurrentFirmwareMode = MODE_USART_BRIDGE;//(PINF & (1 << 7)) ? MODE_USART_BRIDGE : MODE_PDI_PROGRAMMER;
+       CurrentFirmwareMode = (PINF & (1 << 7)) ? MODE_USART_BRIDGE : MODE_PDI_PROGRAMMER;

 
        /* Re-enable JTAG debugging */
        MCUCR &= ~(1 << JTD);
 
        /* Re-enable JTAG debugging */
        MCUCR &= ~(1 << JTD);


@@ -166,30 +172,38 @@ void SetupHardware(void)
 /** Event handler for the library USB Configuration Changed event. */
 void EVENT_USB_Device_ConfigurationChanged(void)
 {
 /** Event handler for the library USB Configuration Changed event. */
 void EVENT_USB_Device_ConfigurationChanged(void)
 {

-       bool EndpointConfigSuccess = true;
+       bool ConfigSuccess = true;

 
        /* Configure the device endpoints according to the selected mode */
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)
        {
 
        /* Configure the device endpoints according to the selected mode */
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)
        {

-               EndpointConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+               ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+
+               /* Configure the UART flush timer - run at Fcpu/1024 for maximum interval before overflow */
+               TCCR0B = ((1 << CS02) | (1 << CS00));
+
+               /* Initialize ring buffers used to hold serial data between USB and software UART interfaces */
+               RingBuffer_InitBuffer(&USBtoUART_Buffer);
+               RingBuffer_InitBuffer(&UARTtoUSB_Buffer);
+
+               /* Start the software USART */
+               SoftUART_Init();

        }
        else
        {
        }
        else
        {

-               EndpointConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK,
-                                                                                                   ENDPOINT_DIR_OUT, AVRISP_DATA_EPSIZE,
-                                                                                                   ENDPOINT_BANK_SINGLE);
+               ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
+                                                           AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);

 
                #if defined(LIBUSB_DRIVER_COMPAT)
 
                #if defined(LIBUSB_DRIVER_COMPAT)

-               EndpointConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK,
-                                                                   ENDPOINT_DIR_IN, AVRISP_DATA_EPSIZE,
-                                                                   ENDPOINT_BANK_SINGLE);
+               ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
+                                                           AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);

                #endif
                #endif

+
+               /* Configure the V2 protocol packet handler */
+               V2Protocol_Init();

        }
 
        }
 

-       if (EndpointConfigSuccess)
-         LEDs_SetAllLEDs(LEDMASK_USB_READY);
-       else
-         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+       LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);

 }
 
 /** Event handler for the library USB Unhandled Control Request event. */
 }
 
 /** Event handler for the library USB Unhandled Control Request event. */


@@ -211,13 +225,31 @@ void EVENT_USB_Device_Disconnect(void)
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 }
 
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 }
 

+/** Event handler for the CDC Class driver Line Encoding Changed event.
+ *
+ *  \param[in] CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced
+ */
+void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
+{
+       /* Change the software UART's baud rate to match the new baud rate */
+       SoftUART_SetBaud(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
+}
+

 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
  *  documentation) by the application code so that the address and size of a requested descriptor can be given
  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
  *  USB host.
 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
  *  documentation) by the application code so that the address and size of a requested descriptor can be given
  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
  *  USB host.

+ *
+ *  \param[in]  wValue  Descriptor type and index to retrieve
+ *  \param[in]  wIndex  Sub-index to retrieve (such as a localized string language)
+ *  \param[out] DescriptorAddress  Address of the retrieved descriptor
+ *
+ *  \return Length of the retrieved descriptor in bytes, or NO_DESCRIPTOR if the descriptor was not found

  */
  */

-uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint8_t wIndex,
+                                    const void** const DescriptorAddress)

 {
        /* Return the correct descriptors based on the selected mode */
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)
 {
        /* Return the correct descriptors based on the selected mode */
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)


@@ -225,3 +257,4 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex,
        else
          return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress);
 }
        else
          return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress);
 }

+