/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2013.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2013 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
- 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
- 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
+ The author disclaims 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
/** \file
*
* Main source file for the XPLAINBridge project. This file contains the main tasks of
- * the demo and is responsible for the initial application hardware configuration.
+ * the project and is responsible for the initial application hardware configuration.
*/
#include "XPLAINBridge.h"
*/
USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
{
- .Config =
+ .Config =
{
- .ControlInterfaceNumber = 0,
-
- .DataINEndpointNumber = CDC_TX_EPNUM,
- .DataINEndpointSize = CDC_TXRX_EPSIZE,
- .DataINEndpointDoubleBank = true,
-
- .DataOUTEndpointNumber = CDC_RX_EPNUM,
- .DataOUTEndpointSize = CDC_TXRX_EPSIZE,
- .DataOUTEndpointDoubleBank = true,
-
- .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,
- .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
- .NotificationEndpointDoubleBank = false,
+ .ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
+ .DataINEndpoint =
+ {
+ .Address = CDC_TX_EPADDR,
+ .Size = CDC_TXRX_EPSIZE,
+ .Banks = 1,
+ },
+ .DataOUTEndpoint =
+ {
+ .Address = CDC_RX_EPADDR,
+ .Size = CDC_TXRX_EPSIZE,
+ .Banks = 1,
+ },
+ .NotificationEndpoint =
+ {
+ .Address = CDC_NOTIFICATION_EPADDR,
+ .Size = CDC_NOTIFICATION_EPSIZE,
+ .Banks = 1,
+ },
},
};
/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
-RingBuff_t USBtoUART_Buffer;
+RingBuffer_t USBtoUART_Buffer;
+
+/** Underlying data buffer for \ref USBtoUART_Buffer, where the stored bytes are located. */
+static uint8_t USBtoUART_Buffer_Data[128];
/** Circular buffer to hold data from the serial port before it is sent to the host. */
-RingBuff_t UARTtoUSB_Buffer;
+RingBuffer_t UARTtoUSB_Buffer;
+
+/** Underlying data buffer for \ref UARTtoUSB_Buffer, where the stored bytes are located. */
+static uint8_t UARTtoUSB_Buffer_Data[128];
/** Main program entry point. This routine contains the overall program flow, including initial
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
- sei();
+ GlobalInterruptEnable();
for (;;)
{
V2Params_UpdateParamValues();
- Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);
-
+ Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPADDR);
+
/* Check to see if a V2 Protocol command has been received */
if (Endpoint_IsOUTReceived())
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
- /* Read bytes from the USB OUT endpoint into the UART transmit buffer */
- int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
- if (!(ReceivedByte < 0) && !(RingBuffer_IsFull(&USBtoUART_Buffer)))
- RingBuffer_Insert(&USBtoUART_Buffer, ReceivedByte);
-
+ /* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
+ if (!(RingBuffer_IsFull(&USBtoUART_Buffer)))
+ {
+ int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+
+ /* Read bytes from the USB OUT endpoint into the UART transmit buffer */
+ if (!(ReceivedByte < 0))
+ 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);
+ uint16_t BufferCount = RingBuffer_GetCount(&UARTtoUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > 200))
{
+ /* Clear flush timer expiry flag */
TIFR0 |= (1 << TOV0);
- /* Read bytes from the UART receive buffer into the USB IN endpoint */
+ /* Read bytes from the USART receive buffer into the USB IN endpoint */
while (BufferCount--)
- CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer));
+ {
+ /* Try to send the next byte of data to the host, abort if there is an error without dequeuing */
+ if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
+ RingBuffer_Peek(&UARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
+ {
+ break;
+ }
+
+ /* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
+ RingBuffer_Remove(&UARTtoUSB_Buffer);
+ }
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
+#if (ARCH == ARCH_AVR8)
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
-
- /* Hardware Initialization */
- SoftUART_Init();
- LEDs_Init();
- USB_Init();
+#endif
/* Disable JTAG debugging */
MCUCR |= (1 << JTD);
/* Enable pull-up on the JTAG TDI pin so we can use it to select the mode */
PORTF |= (1 << 7);
- _delay_ms(10);
+ Delay_MS(10);
/* Select the firmware mode based on the JTD pin's value */
CurrentFirmwareMode = (PINF & (1 << 7)) ? MODE_USART_BRIDGE : MODE_PDI_PROGRAMMER;
/* Re-enable JTAG debugging */
MCUCR &= ~(1 << JTD);
MCUCR &= ~(1 << JTD);
+
+ /* Hardware Initialization */
+ SoftUART_Init();
+ LEDs_Init();
+ #if defined(RESET_TOGGLES_LIBUSB_COMPAT)
+ UpdateCurrentCompatibilityMode();
+ #endif
+
+ /* USB Stack Initialization */
+ USB_Init();
}
/** 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)
{
- 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);
-
+ RingBuffer_InitBuffer(&USBtoUART_Buffer, USBtoUART_Buffer_Data, sizeof(USBtoUART_Buffer_Data));
+ RingBuffer_InitBuffer(&UARTtoUSB_Buffer, UARTtoUSB_Buffer_Data, sizeof(UARTtoUSB_Buffer_Data));
+
/* Start the software USART */
SoftUART_Init();
}
else
{
- EndpointConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_OUT, AVRISP_DATA_EPSIZE,
- ENDPOINT_BANK_SINGLE);
-
- #if defined(LIBUSB_DRIVER_COMPAT)
- EndpointConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK,
- ENDPOINT_DIR_IN, AVRISP_DATA_EPSIZE,
- ENDPOINT_BANK_SINGLE);
- #endif
-
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
+
+ if ((AVRISP_DATA_IN_EPADDR & ENDPOINT_EPNUM_MASK) != (AVRISP_DATA_OUT_EPADDR & ENDPOINT_EPNUM_MASK))
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
+
/* 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. */
-void EVENT_USB_Device_UnhandledControlRequest(void)
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
{
if (CurrentFirmwareMode == MODE_USART_BRIDGE)
CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
* 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
+ * \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
+ * \param[out] DescriptorMemorySpace Memory space that the descriptor is stored in
*
* \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)
+ const void** const DescriptorAddress,
+ uint8_t* const DescriptorMemorySpace)
{
/* Return the correct descriptors based on the selected mode */
if (CurrentFirmwareMode == MODE_USART_BRIDGE)
- return USART_GetDescriptor(wValue, wIndex, DescriptorAddress);
+ return USART_GetDescriptor(wValue, wIndex, DescriptorAddress, DescriptorMemorySpace);
else
- return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress);
+ return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress, DescriptorMemorySpace);
}
+
projects / pub / USBasp.git / blobdiff