/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
+ Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 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
/** \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"
.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,
+ .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
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 (!(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);
/* 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;
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
{
- ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
- AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
#if defined(LIBUSB_DRIVER_COMPAT)
- ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
- AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);
+ ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
#endif
/* Configure the V2 protocol packet handler */
projects / pub / USBasp.git / blobdiff