diff options
Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c b/lib/lufa/Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c deleted file mode 100644 index 6f83a84af0..0000000000 --- a/lib/lufa/Demos/Device/LowLevel/VirtualSerial/VirtualSerial.c +++ /dev/null @@ -1,243 +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 VirtualSerial demo. This file contains the main tasks of the demo and - * is responsible for the initial application hardware configuration. - */ - -#include "VirtualSerial.h" - -/** Contains the current baud rate and other settings of the virtual serial port. While this demo does not use - * the physical USART and thus does not use these settings, they must still be retained and returned to the host - * upon request or the host will assume the device is non-functional. - * - * These values are set by the host via a class-specific request, however they are not required to be used accurately. - * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical - * serial link characteristics and instead sends and receives data in endpoint streams. - */ -static CDC_LineEncoding_t LineEncoding = { .BaudRateBPS = 0, - .CharFormat = CDC_LINEENCODING_OneStopBit, - .ParityType = CDC_PARITY_None, - .DataBits = 8 }; - - -/** 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 (;;) - { - CDC_Task(); - 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); -#elif (ARCH == ARCH_XMEGA) - /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */ - XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU); - XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL); - - /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */ - XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ); - XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB); - - PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm; -#endif - - /* Hardware Initialization */ - Joystick_Init(); - LEDs_Init(); - USB_Init(); -} - -/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and - * starts the library USB task to begin the enumeration and USB management process. - */ -void EVENT_USB_Device_Connect(void) -{ - /* Indicate USB enumerating */ - LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); -} - -/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via - * the status LEDs and stops the USB management and CDC management tasks. - */ -void EVENT_USB_Device_Disconnect(void) -{ - /* Indicate USB not ready */ - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); -} - -/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration - * of the USB device after enumeration - the device endpoints are configured and the CDC management task started. - */ -void EVENT_USB_Device_ConfigurationChanged(void) -{ - bool ConfigSuccess = true; - - /* Setup CDC Data Endpoints */ - ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1); - ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1); - ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1); - - /* Reset line encoding baud rate so that the host knows to send new values */ - LineEncoding.BaudRateBPS = 0; - - /* Indicate endpoint configuration success or failure */ - LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_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) -{ - /* Process CDC specific control requests */ - switch (USB_ControlRequest.bRequest) - { - case CDC_REQ_GetLineEncoding: - if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) - { - Endpoint_ClearSETUP(); - - /* Write the line coding data to the control endpoint */ - Endpoint_Write_Control_Stream_LE(&LineEncoding, sizeof(CDC_LineEncoding_t)); - Endpoint_ClearOUT(); - } - - break; - case CDC_REQ_SetLineEncoding: - if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) - { - Endpoint_ClearSETUP(); - - /* Read the line coding data in from the host into the global struct */ - Endpoint_Read_Control_Stream_LE(&LineEncoding, sizeof(CDC_LineEncoding_t)); - Endpoint_ClearIN(); - } - - break; - case CDC_REQ_SetControlLineState: - if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) - { - Endpoint_ClearSETUP(); - Endpoint_ClearStatusStage(); - - /* NOTE: Here you can read in the line state mask from the host, to get the current state of the output handshake - lines. The mask is read in from the wValue parameter in USB_ControlRequest, and can be masked against the - CONTROL_LINE_OUT_* masks to determine the RTS and DTR line states using the following code: - */ - } - - break; - } -} - -/** Function to manage CDC data transmission and reception to and from the host. */ -void CDC_Task(void) -{ - char* ReportString = NULL; - uint8_t JoyStatus_LCL = Joystick_GetStatus(); - static bool ActionSent = false; - - /* Device must be connected and configured for the task to run */ - if (USB_DeviceState != DEVICE_STATE_Configured) - return; - - /* Determine if a joystick action has occurred */ - if (JoyStatus_LCL & JOY_UP) - ReportString = "Joystick Up\r\n"; - else if (JoyStatus_LCL & JOY_DOWN) - ReportString = "Joystick Down\r\n"; - else if (JoyStatus_LCL & JOY_LEFT) - ReportString = "Joystick Left\r\n"; - else if (JoyStatus_LCL & JOY_RIGHT) - ReportString = "Joystick Right\r\n"; - else if (JoyStatus_LCL & JOY_PRESS) - ReportString = "Joystick Pressed\r\n"; - else - ActionSent = false; - - /* Flag management - Only allow one string to be sent per action */ - if ((ReportString != NULL) && (ActionSent == false) && LineEncoding.BaudRateBPS) - { - ActionSent = true; - - /* Select the Serial Tx Endpoint */ - Endpoint_SelectEndpoint(CDC_TX_EPADDR); - - /* Write the String to the Endpoint */ - Endpoint_Write_Stream_LE(ReportString, strlen(ReportString), NULL); - - /* Remember if the packet to send completely fills the endpoint */ - bool IsFull = (Endpoint_BytesInEndpoint() == CDC_TXRX_EPSIZE); - - /* Finalize the stream transfer to send the last packet */ - Endpoint_ClearIN(); - - /* If the last packet filled the endpoint, send an empty packet to release the buffer on - * the receiver (otherwise all data will be cached until a non-full packet is received) */ - if (IsFull) - { - /* Wait until the endpoint is ready for another packet */ - Endpoint_WaitUntilReady(); - - /* Send an empty packet to ensure that the host does not buffer data sent to it */ - Endpoint_ClearIN(); - } - } - - /* Select the Serial Rx Endpoint */ - Endpoint_SelectEndpoint(CDC_RX_EPADDR); - - /* Throw away any received data from the host */ - if (Endpoint_IsOUTReceived()) - Endpoint_ClearOUT(); -} - |