diff options
Diffstat (limited to 'firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c')
| -rw-r--r-- | firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c b/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c deleted file mode 100644 index 4de73c8..0000000 --- a/firmwares/atmegaxxu2/arduino-usbserial/Arduino-usbserial.c +++ /dev/null @@ -1,242 +0,0 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 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 disclaim 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 Arduino-usbserial project. This file contains the main tasks of
- * the project and is responsible for the initial application hardware configuration.
- */
-
-#include "Arduino-usbserial.h"
-
-/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
-RingBuff_t USBtoUSART_Buffer;
-
-/** Circular buffer to hold data from the serial port before it is sent to the host. */
-RingBuff_t USARTtoUSB_Buffer;
-
-/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */
-volatile struct
-{
- uint8_t TxLEDPulse; /**< Milliseconds remaining for data Tx LED pulse */
- uint8_t RxLEDPulse; /**< Milliseconds remaining for data Rx LED pulse */
- uint8_t PingPongLEDPulse; /**< Milliseconds remaining for enumeration Tx/Rx ping-pong LED pulse */
-} PulseMSRemaining;
-
-/** 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 = 0,
-
- .DataINEndpointNumber = CDC_TX_EPNUM,
- .DataINEndpointSize = CDC_TXRX_EPSIZE,
- .DataINEndpointDoubleBank = false,
-
- .DataOUTEndpointNumber = CDC_RX_EPNUM,
- .DataOUTEndpointSize = CDC_TXRX_EPSIZE,
- .DataOUTEndpointDoubleBank = false,
-
- .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,
- .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
- .NotificationEndpointDoubleBank = false,
- },
- };
-
-/** 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);
- RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
-
- sei();
-
- 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);
-
- /* Read bytes from the USB OUT endpoint into the USART transmit buffer */
- if (!(ReceivedByte < 0))
- RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
- }
-
- /* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
- RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
- if ((TIFR0 & (1 << TOV0)) || (BufferCount > BUFFER_NEARLY_FULL))
- {
- TIFR0 |= (1 << TOV0);
-
- if (USARTtoUSB_Buffer.Count) {
- LEDs_TurnOnLEDs(LEDMASK_TX);
- PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
- }
-
- /* Read bytes from the USART receive buffer into the USB IN endpoint */
- while (BufferCount--)
- CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&USARTtoUSB_Buffer));
-
- /* Turn off TX LED(s) once the TX pulse period has elapsed */
- if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
- LEDs_TurnOffLEDs(LEDMASK_TX);
-
- /* Turn off RX LED(s) once the RX pulse period has elapsed */
- if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
- LEDs_TurnOffLEDs(LEDMASK_RX);
- }
-
- /* Load the next byte from the USART transmit buffer into the USART */
- if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
- Serial_TxByte(RingBuffer_Remove(&USBtoUSART_Buffer));
-
- LEDs_TurnOnLEDs(LEDMASK_RX);
- PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
- }
-
- CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
- USB_USBTask();
- }
-}
-
-/** Configures the board hardware and chip peripherals for the demo's functionality. */
-void SetupHardware(void)
-{
- /* Disable watchdog if enabled by bootloader/fuses */
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- /* Hardware Initialization */
- Serial_Init(9600, false);
- LEDs_Init();
- USB_Init();
-
- /* Start the flush timer so that overflows occur rapidly to push received bytes to the USB interface */
- TCCR0B = (1 << CS02);
-
- /* Pull target /RESET line high */
- AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
- AVR_RESET_LINE_DDR |= AVR_RESET_LINE_MASK;
-}
-
-/** Event handler for the library USB Configuration Changed event. */
-void EVENT_USB_Device_ConfigurationChanged(void)
-{
- CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
-}
-
-/** Event handler for the library USB Unhandled Control Request event. */
-void EVENT_USB_Device_UnhandledControlRequest(void)
-{
- CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
-}
-
-/** 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;
- }
-
- /* Must turn off USART before reconfiguring it, otherwise incorrect operation may occur */
- UCSR1B = 0;
- UCSR1A = 0;
- UCSR1C = 0;
-
- /* Special case 57600 baud for compatibility with the ATmega328 bootloader. */
- UBRR1 = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600)
- ? SERIAL_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS)
- : SERIAL_2X_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
-
- UCSR1C = ConfigMask;
- UCSR1A = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600) ? 0 : (1 << U2X1);
- UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));
-}
-
-/** 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_Insert(&USARTtoUSB_Buffer, ReceivedByte);
-}
-
-/** Event handler for the CDC Class driver Host-to-Device Line Encoding Changed event.
- *
- * \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
- */
-void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
-{
- bool CurrentDTRState = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR);
-
- if (CurrentDTRState)
- AVR_RESET_LINE_PORT &= ~AVR_RESET_LINE_MASK;
- else
- AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
-}
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