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Diffstat (limited to 'lib/lufa/Projects/XPLAINBridge/XPLAINBridge.c')
| -rw-r--r-- | lib/lufa/Projects/XPLAINBridge/XPLAINBridge.c | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/lib/lufa/Projects/XPLAINBridge/XPLAINBridge.c b/lib/lufa/Projects/XPLAINBridge/XPLAINBridge.c deleted file mode 100644 index d901af819c..0000000000 --- a/lib/lufa/Projects/XPLAINBridge/XPLAINBridge.c +++ /dev/null @@ -1,292 +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 XPLAINBridge project. This file contains the main tasks of - * the project and is responsible for the initial application hardware configuration. - */ - -#include "XPLAINBridge.h" - -/** Current firmware mode, making the device behave as either a programmer or a USART bridge */ -bool CurrentFirmwareMode = MODE_USART_BRIDGE; - -/** 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, - }, - }, - }; - -/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */ -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. */ -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 - * setup of all components and the main program loop. - */ -int main(void) -{ - SetupHardware(); - - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); - GlobalInterruptEnable(); - - for (;;) - { - if (CurrentFirmwareMode == MODE_USART_BRIDGE) - UARTBridge_Task(); - else - AVRISP_Task(); - - USB_USBTask(); - } -} - -void AVRISP_Task(void) -{ - /* Must be in the configured state for the AVRISP code to process data */ - if (USB_DeviceState != DEVICE_STATE_Configured) - return; - - V2Params_UpdateParamValues(); - - Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPADDR); - - /* Check to see if a V2 Protocol command has been received */ - if (Endpoint_IsOUTReceived()) - { - LEDs_SetAllLEDs(LEDMASK_BUSY); - - /* Pass off processing of the V2 Protocol command to the V2 Protocol handler */ - V2Protocol_ProcessCommand(); - - LEDs_SetAllLEDs(LEDMASK_USB_READY); - } -} - -void UARTBridge_Task(void) -{ - /* Must be in the configured state for the USART Bridge code to process data */ - if (USB_DeviceState != DEVICE_STATE_Configured) - return; - - /* 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 */ - 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 USART receive buffer into the USB IN endpoint */ - 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(&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); -#endif - - /* Disable JTAG debugging */ - MCUCR |= (1 << JTD); - 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); - - /* 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 ConfigSuccess = true; - - /* Configure the device endpoints according to the selected mode */ - if (CurrentFirmwareMode == MODE_USART_BRIDGE) - { - 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, 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_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(); - } - - 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) -{ - if (CurrentFirmwareMode == MODE_USART_BRIDGE) - CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface); -} - -/** 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 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) -{ - /* Change the software UART's baud rate to match the new baud rate */ - SoftUART_SetBaud(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS); -} - -/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors" - * documentation) by the application code so that the address and size of a requested descriptor can be given - * to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function - * 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 - * - * \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 uint16_t wIndex, - const void** const DescriptorAddress) -{ - /* Return the correct descriptors based on the selected mode */ - if (CurrentFirmwareMode == MODE_USART_BRIDGE) - return USART_GetDescriptor(wValue, wIndex, DescriptorAddress); - else - return AVRISP_GetDescriptor(wValue, wIndex, DescriptorAddress); -} - |