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-rw-r--r--lib/lufa/Projects/USBtoSerial/USBtoSerial.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/lib/lufa/Projects/USBtoSerial/USBtoSerial.c b/lib/lufa/Projects/USBtoSerial/USBtoSerial.c
deleted file mode 100644
index 47a84a4ad..000000000
--- a/lib/lufa/Projects/USBtoSerial/USBtoSerial.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2017.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2017 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
- 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
- software without specific, written prior permission.
-
- 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
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Main source file for the USBtoSerial project. This file contains the main tasks of
- * the project and is responsible for the initial application hardware configuration.
- */
-
-#include "USBtoSerial.h"
-
-/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
-static RingBuffer_t USBtoUSART_Buffer;
-
-/** Underlying data buffer for \ref USBtoUSART_Buffer, where the stored bytes are located. */
-static uint8_t USBtoUSART_Buffer_Data[128];
-
-/** Circular buffer to hold data from the serial port before it is sent to the host. */
-static RingBuffer_t USARTtoUSB_Buffer;
-
-/** Underlying data buffer for \ref USARTtoUSB_Buffer, where the stored bytes are located. */
-static uint8_t USARTtoUSB_Buffer_Data[128];
-
-/** 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
- * within a device can be differentiated from one another.
- */
-USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
- {
- .Config =
- {
- .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,
- },
- },
- };
-
-
-/** Main program entry point. This routine contains the overall program flow, including initial
- * setup of all components and the main program loop.
- */
-int main(void)
-{
- SetupHardware();
-
- RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
- RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
-
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
- GlobalInterruptEnable();
-
- for (;;)
- {
- /* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
- if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
- {
- int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
-
- /* Store received byte into the USART transmit buffer */
- if (!(ReceivedByte < 0))
- RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
- }
-
- uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
- if (BufferCount)
- {
- Endpoint_SelectEndpoint(VirtualSerial_CDC_Interface.Config.DataINEndpoint.Address);
-
- /* Check if a packet is already enqueued to the host - if so, we shouldn't try to send more data
- * until it completes as there is a chance nothing is listening and a lengthy timeout could occur */
- if (Endpoint_IsINReady())
- {
- /* Never send more than one bank size less one byte to the host at a time, so that we don't block
- * while a Zero Length Packet (ZLP) to terminate the transfer is sent if the host isn't listening */
- uint8_t BytesToSend = MIN(BufferCount, (CDC_TXRX_EPSIZE - 1));
-
- /* Read bytes from the USART receive buffer into the USB IN endpoint */
- while (BytesToSend--)
- {
- /* 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(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
- {
- break;
- }
-
- /* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
- RingBuffer_Remove(&USARTtoUSB_Buffer);
- }
- }
- }
-
- /* Load the next byte from the USART transmit buffer into the USART if transmit buffer space is available */
- if (Serial_IsSendReady() && !(RingBuffer_IsEmpty(&USBtoUSART_Buffer)))
- Serial_SendByte(RingBuffer_Remove(&USBtoUSART_Buffer));
-
- CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
- USB_USBTask();
- }
-}
-
-/** 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);
-#endif
-
- /* Hardware Initialization */
- LEDs_Init();
- USB_Init();
-}
-
-/** Event handler for the library USB Connection event. */
-void EVENT_USB_Device_Connect(void)
-{
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-}
-
-/** Event handler for the library USB Disconnection event. */
-void EVENT_USB_Device_Disconnect(void)
-{
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-}
-
-/** Event handler for the library USB Configuration Changed event. */
-void EVENT_USB_Device_ConfigurationChanged(void)
-{
- bool ConfigSuccess = true;
-
- ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
-
- LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
-}
-
-/** Event handler for the library USB Control Request reception event. */
-void EVENT_USB_Device_ControlRequest(void)
-{
- CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
-}
-
-/** ISR to manage the reception of data from the serial port, placing received bytes into a circular buffer
- * for later transmission to the host.
- */
-ISR(USART1_RX_vect, ISR_BLOCK)
-{
- uint8_t ReceivedByte = UDR1;
-
- if ((USB_DeviceState == DEVICE_STATE_Configured) && !(RingBuffer_IsFull(&USARTtoUSB_Buffer)))
- RingBuffer_Insert(&USARTtoUSB_Buffer, ReceivedByte);
-}
-
-/** 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)
-{
- uint8_t ConfigMask = 0;
-
- switch (CDCInterfaceInfo->State.LineEncoding.ParityType)
- {
- case CDC_PARITY_Odd:
- ConfigMask = ((1 << UPM11) | (1 << UPM10));
- break;
- case CDC_PARITY_Even:
- ConfigMask = (1 << UPM11);
- break;
- }
-
- if (CDCInterfaceInfo->State.LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)
- ConfigMask |= (1 << USBS1);
-
- switch (CDCInterfaceInfo->State.LineEncoding.DataBits)
- {
- case 6:
- ConfigMask |= (1 << UCSZ10);
- break;
- case 7:
- ConfigMask |= (1 << UCSZ11);
- break;
- case 8:
- ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));
- break;
- }
-
- /* Keep the TX line held high (idle) while the USART is reconfigured */
- PORTD |= (1 << 3);
-
- /* Must turn off USART before reconfiguring it, otherwise incorrect operation may occur */
- UCSR1B = 0;
- UCSR1A = 0;
- UCSR1C = 0;
-
- /* Set the new baud rate before configuring the USART */
- UBRR1 = SERIAL_2X_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
-
- /* Reconfigure the USART in double speed mode for a wider baud rate range at the expense of accuracy */
- UCSR1C = ConfigMask;
- UCSR1A = (1 << U2X1);
- UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));
-
- /* Release the TX line after the USART has been reconfigured */
- PORTD &= ~(1 << 3);
-}
-
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