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Diffstat (limited to 'lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c')
| -rw-r--r-- | lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c b/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c new file mode 100644 index 0000000000..916457a2f4 --- /dev/null +++ b/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c @@ -0,0 +1,253 @@ +/* + 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 GenericHID demo. This file contains the main tasks of the demo and + * is responsible for the initial application hardware configuration. + */ + +#include "GenericHID.h" + + +/** Main program entry point. This routine configures the hardware required by the application, then + * enters a loop to run the application tasks in sequence. + */ +int main(void) +{ + SetupHardware(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + GlobalInterruptEnable(); + + for (;;) + { + HID_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 */ + 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 task. + */ +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 sets the current configuration + * of the USB device after enumeration, and configures the generic HID device endpoints. + */ +void EVENT_USB_Device_ConfigurationChanged(void) +{ + bool ConfigSuccess = true; + + /* Setup HID Report Endpoints */ + ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_IN_EPADDR, EP_TYPE_INTERRUPT, GENERIC_EPSIZE, 1); + ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_OUT_EPADDR, EP_TYPE_INTERRUPT, GENERIC_EPSIZE, 1); + + /* 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) +{ + /* Handle HID Class specific requests */ + switch (USB_ControlRequest.bRequest) + { + case HID_REQ_GetReport: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + uint8_t GenericData[GENERIC_REPORT_SIZE]; + CreateGenericHIDReport(GenericData); + + Endpoint_ClearSETUP(); + + /* Write the report data to the control endpoint */ + Endpoint_Write_Control_Stream_LE(&GenericData, sizeof(GenericData)); + Endpoint_ClearOUT(); + } + + break; + case HID_REQ_SetReport: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + uint8_t GenericData[GENERIC_REPORT_SIZE]; + + Endpoint_ClearSETUP(); + + /* Read the report data from the control endpoint */ + Endpoint_Read_Control_Stream_LE(&GenericData, sizeof(GenericData)); + Endpoint_ClearIN(); + + ProcessGenericHIDReport(GenericData); + } + + break; + } +} + +/** Function to process the last received report from the host. + * + * \param[in] DataArray Pointer to a buffer where the last received report has been stored + */ +void ProcessGenericHIDReport(uint8_t* DataArray) +{ + /* + This is where you need to process reports sent from the host to the device. This + function is called each time the host has sent a new report. DataArray is an array + holding the report sent from the host. + */ + + uint8_t NewLEDMask = LEDS_NO_LEDS; + + if (DataArray[0]) + NewLEDMask |= LEDS_LED1; + + if (DataArray[1]) + NewLEDMask |= LEDS_LED2; + + if (DataArray[2]) + NewLEDMask |= LEDS_LED3; + + if (DataArray[3]) + NewLEDMask |= LEDS_LED4; + + LEDs_SetAllLEDs(NewLEDMask); +} + +/** Function to create the next report to send back to the host at the next reporting interval. + * + * \param[out] DataArray Pointer to a buffer where the next report data should be stored + */ +void CreateGenericHIDReport(uint8_t* DataArray) +{ + /* + This is where you need to create reports to be sent to the host from the device. This + function is called each time the host is ready to accept a new report. DataArray is + an array to hold the report to the host. + */ + + uint8_t CurrLEDMask = LEDs_GetLEDs(); + + DataArray[0] = ((CurrLEDMask & LEDS_LED1) ? 1 : 0); + DataArray[1] = ((CurrLEDMask & LEDS_LED2) ? 1 : 0); + DataArray[2] = ((CurrLEDMask & LEDS_LED3) ? 1 : 0); + DataArray[3] = ((CurrLEDMask & LEDS_LED4) ? 1 : 0); +} + +void HID_Task(void) +{ + /* Device must be connected and configured for the task to run */ + if (USB_DeviceState != DEVICE_STATE_Configured) + return; + + Endpoint_SelectEndpoint(GENERIC_OUT_EPADDR); + + /* Check to see if a packet has been sent from the host */ + if (Endpoint_IsOUTReceived()) + { + /* Check to see if the packet contains data */ + if (Endpoint_IsReadWriteAllowed()) + { + /* Create a temporary buffer to hold the read in report from the host */ + uint8_t GenericData[GENERIC_REPORT_SIZE]; + + /* Read Generic Report Data */ + Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData), NULL); + + /* Process Generic Report Data */ + ProcessGenericHIDReport(GenericData); + } + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearOUT(); + } + + Endpoint_SelectEndpoint(GENERIC_IN_EPADDR); + + /* Check to see if the host is ready to accept another packet */ + if (Endpoint_IsINReady()) + { + /* Create a temporary buffer to hold the report to send to the host */ + uint8_t GenericData[GENERIC_REPORT_SIZE]; + + /* Create Generic Report Data */ + CreateGenericHIDReport(GenericData); + + /* Write Generic Report Data */ + Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData), NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearIN(); + } +} + |