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Diffstat (limited to 'Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c')
| -rw-r--r-- | Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c b/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c new file mode 100644 index 0000000000..9a7ff4725e --- /dev/null +++ b/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c @@ -0,0 +1,242 @@ +/* + 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 DualVirtualSerial demo. This file contains the main tasks of + * the demo and is responsible for the initial application hardware configuration. + */ + +#include "DualVirtualSerial.h" + +/** 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. This is for the first CDC interface, + * which sends strings to the host for each joystick movement. + */ +USB_ClassInfo_CDC_Device_t VirtualSerial1_CDC_Interface = + { + .Config = + { + .ControlInterfaceNumber = INTERFACE_ID_CDC1_CCI, + .DataINEndpoint = + { + .Address = CDC1_TX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .DataOUTEndpoint = + { + .Address = CDC1_RX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .NotificationEndpoint = + { + .Address = CDC1_NOTIFICATION_EPADDR, + .Size = CDC_NOTIFICATION_EPSIZE, + .Banks = 1, + }, + }, + }; + +/** 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. This is for the second CDC interface, + * which echos back all received data from the host. + */ +USB_ClassInfo_CDC_Device_t VirtualSerial2_CDC_Interface = + { + .Config = + { + .ControlInterfaceNumber = INTERFACE_ID_CDC2_CCI, + .DataINEndpoint = + { + .Address = CDC2_TX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .DataOUTEndpoint = + { + .Address = CDC2_RX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .NotificationEndpoint = + { + .Address = CDC2_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(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + GlobalInterruptEnable(); + + for (;;) + { + CheckJoystickMovement(); + + /* Discard all received data on the first CDC interface */ + CDC_Device_ReceiveByte(&VirtualSerial1_CDC_Interface); + + /* Echo all received data on the second CDC interface */ + int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial2_CDC_Interface); + if (!(ReceivedByte < 0)) + CDC_Device_SendByte(&VirtualSerial2_CDC_Interface, (uint8_t)ReceivedByte); + + CDC_Device_USBTask(&VirtualSerial1_CDC_Interface); + CDC_Device_USBTask(&VirtualSerial2_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); +#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(); +} + +/** Checks for changes in the position of the board joystick, sending strings to the host upon each change + * through the first of the CDC interfaces. + */ +void CheckJoystickMovement(void) +{ + uint8_t JoyStatus_LCL = Joystick_GetStatus(); + char* ReportString = NULL; + static bool ActionSent = false; + + 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; + + if ((ReportString != NULL) && (ActionSent == false)) + { + ActionSent = true; + + CDC_Device_SendString(&VirtualSerial1_CDC_Interface, ReportString); + } +} + +/** 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(&VirtualSerial1_CDC_Interface); + ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial2_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(&VirtualSerial1_CDC_Interface); + CDC_Device_ProcessControlRequest(&VirtualSerial2_CDC_Interface); +} + +/** CDC class driver callback function the processing of changes to the virtual + * control lines sent from the host.. + * + * \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) +{ + /* You can get changes to the virtual CDC lines in this callback; a common + use-case is to use the Data Terminal Ready (DTR) flag to enable and + disable CDC communications in your application when set to avoid the + application blocking while waiting for a host to become ready and read + in the pending data from the USB endpoints. + */ + bool HostReady = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR) != 0; + + if (CDCInterfaceInfo == &VirtualSerial1_CDC_Interface) + { + // CDC interface 1's host is ready to send/receive data + } + else + { + // CDC interface 2's host is ready to send/receive data + } +} |