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Diffstat (limited to 'lib/lufa/Projects/Benito/Benito.c')
| -rw-r--r-- | lib/lufa/Projects/Benito/Benito.c | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/lib/lufa/Projects/Benito/Benito.c b/lib/lufa/Projects/Benito/Benito.c deleted file mode 100644 index 93a39cb7bc..0000000000 --- a/lib/lufa/Projects/Benito/Benito.c +++ /dev/null @@ -1,311 +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 Benito project. This file contains the main tasks of - * the project and is responsible for the initial application hardware configuration. - */ - -#include "Benito.h" - -/** 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]; - -/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */ -volatile struct -{ - uint8_t ResetPulse; /**< Milliseconds remaining for target /RESET pulse */ - 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; - -/** Milliseconds remaining until the receive buffer is flushed to the USB host */ -uint8_t FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS; - -/** 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(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data)); - - GlobalInterruptEnable(); - - for (;;) - { - /* Echo bytes from the host to the target via the hardware USART */ - if ((UCSR1A & (1 << UDRE1)) && CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface)) - { - UDR1 = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface); - - LEDs_TurnOnLEDs(LEDMASK_TX); - PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS; - } - - /* Check if the millisecond timer has elapsed */ - if (TIFR0 & (1 << OCF0A)) - { - /* Clear flush timer expiry flag */ - TIFR0 |= (1 << TOV0); - - /* Check if the reset pulse period has elapsed, if so tristate the target reset line */ - if (PulseMSRemaining.ResetPulse && !(--PulseMSRemaining.ResetPulse)) - { - LEDs_TurnOffLEDs(LEDMASK_BUSY); - AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK; - } - - /* Check if the LEDs should be ping-ponging (during enumeration) */ - if (PulseMSRemaining.PingPongLEDPulse && !(--PulseMSRemaining.PingPongLEDPulse)) - { - LEDs_ToggleLEDs(LEDMASK_TX | LEDMASK_RX); - PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS; - } - - /* 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); - - /* Check if the receive buffer flush period has expired */ - uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer); - if (!(--FlushPeriodRemaining) || (BufferCount > 200)) - { - FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS; - - /* Start RX LED indicator pulse */ - if (BufferCount) - { - LEDs_TurnOnLEDs(LEDMASK_RX); - PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS; - } - - /* Echo bytes from the target to the host via the virtual serial port */ - while (BufferCount--) - { - /* 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); - } - } - } - - 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(); - - /* Millisecond Timer Interrupt */ - OCR0A = (F_CPU / 64 / 1000); - TCCR0A = (1 << WGM01); - TCCR0B = ((1 << CS01) | (1 << CS00)); - - /* Tristate target /RESET Line */ - AVR_RESET_LINE_PORT &= ~AVR_RESET_LINE_MASK; - AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK; -} - -/** Event handler for the library USB Connection event. */ -void EVENT_USB_Device_Connect(void) -{ - PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS; - LEDs_SetAllLEDs(LEDMASK_TX); -} - -/** Event handler for the library USB Disconnection event. */ -void EVENT_USB_Device_Disconnect(void) -{ - PulseMSRemaining.PingPongLEDPulse = 0; - LEDs_SetAllLEDs(LEDS_NO_LEDS); -} - -/** 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); - - PulseMSRemaining.PingPongLEDPulse = 0; - - LEDs_SetAllLEDs(ConfigSuccess ? LEDS_NO_LEDS : LEDMASK_ERROR); -} - -/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to - * the device from the USB host before passing along unhandled control requests to the library for processing - * internally. - */ -void EVENT_USB_Device_ControlRequest(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; - - /* 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)); -} - -/** 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) -{ - static bool PreviousDTRState = false; - bool CurrentDTRState = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR); - - /* Check if the DTR line has been asserted - if so, start the target AVR's reset pulse */ - if (!(PreviousDTRState) && CurrentDTRState) - { - LEDs_SetAllLEDs(LEDMASK_BUSY); - - AVR_RESET_LINE_DDR |= AVR_RESET_LINE_MASK; - PulseMSRemaining.ResetPulse = AVR_RESET_PULSE_MS; - } - - PreviousDTRState = CurrentDTRState; -} - |