270 lines
8.1 KiB
C
270 lines
8.1 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2019.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the GenericHIDHost demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "GenericHIDHost.h"
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/** Main program entry point. This routine configures the hardware required by the application, then
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* enters a loop to run the application tasks in sequence.
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*/
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int main(void)
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{
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SetupHardware();
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puts_P(PSTR(ESC_FG_CYAN "Generic HID Host Demo running.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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GlobalInterruptEnable();
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for (;;)
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{
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ReadNextReport();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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#if (ARCH == ARCH_AVR8)
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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#endif
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/* Hardware Initialization */
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Serial_Init(9600, false);
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LEDs_Init();
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USB_Init();
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/* Create a stdio stream for the serial port for stdin and stdout */
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Serial_CreateStream(NULL);
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}
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/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
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* starts the library USB task to begin the enumeration and USB management process.
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*/
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void EVENT_USB_Host_DeviceAttached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
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* stops the library USB task management process.
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*/
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void EVENT_USB_Host_DeviceUnattached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
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* enumerated by the host and is now ready to be used by the application.
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*/
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void EVENT_USB_Host_DeviceEnumerationComplete(void)
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{
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puts_P(PSTR("Getting Config Data.\r\n"));
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uint8_t ErrorCode;
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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puts_P(PSTR("HID Device Enumerated.\r\n"));
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
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void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
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{
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USB_Disable();
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printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
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" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
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* enumerating an attached USB device.
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*/
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void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
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const uint8_t SubErrorCode)
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{
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printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
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" -- Error Code %d\r\n"
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" -- Sub Error Code %d\r\n"
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" -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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/** Reads in and processes the next report from the attached device, displaying the report
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* contents on the board LEDs and via the serial port.
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*/
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void ReadNextReport(void)
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{
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if (USB_HostState != HOST_STATE_Configured)
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return;
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/* Select and unfreeze HID data IN pipe */
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Pipe_SelectPipe(HID_DATA_IN_PIPE);
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Pipe_Unfreeze();
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/* Check to see if a packet has been received */
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if (!(Pipe_IsINReceived()))
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{
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/* Refreeze HID data IN pipe */
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Pipe_Freeze();
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return;
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}
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/* Ensure pipe contains data before trying to read from it */
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if (Pipe_IsReadWriteAllowed())
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{
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uint8_t ReportINData[Pipe_BytesInPipe()];
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/* Read in HID report data */
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Pipe_Read_Stream_LE(&ReportINData, sizeof(ReportINData), NULL);
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/* Print report data through the serial port */
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for (uint16_t CurrByte = 0; CurrByte < sizeof(ReportINData); CurrByte++)
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printf_P(PSTR("0x%02X "), ReportINData[CurrByte]);
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puts_P(PSTR("\r\n"));
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}
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/* Clear the IN endpoint, ready for next data packet */
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Pipe_ClearIN();
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/* Refreeze HID data IN pipe */
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Pipe_Freeze();
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}
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/** Writes a report to the attached device.
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*
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* \param[in] ReportOUTData Buffer containing the report to send to the device
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* \param[in] ReportIndex Index of the report in the device (zero if the device does not use multiple reports)
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* \param[in] ReportType Type of report to send, either REPORT_TYPE_OUT or REPORT_TYPE_FEATURE
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* \param[in] ReportLength Length of the report to send
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*/
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void WriteNextReport(uint8_t* ReportOUTData,
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const uint8_t ReportIndex,
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const uint8_t ReportType,
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uint16_t ReportLength)
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{
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if (USB_HostState != HOST_STATE_Configured)
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return;
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/* Select the HID data OUT pipe */
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Pipe_SelectPipe(HID_DATA_OUT_PIPE);
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/* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
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* control endpoint instead) - check to see if the OUT endpoint has been initialized */
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if (Pipe_IsConfigured() && (ReportType == REPORT_TYPE_OUT))
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{
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Pipe_Unfreeze();
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/* Ensure pipe is ready to be written to before continuing */
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if (!(Pipe_IsOUTReady()))
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{
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/* Refreeze the data OUT pipe */
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Pipe_Freeze();
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return;
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}
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/* If the report index is used, send it before the report data */
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if (ReportIndex)
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Pipe_Write_8(ReportIndex);
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/* Write out HID report data */
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Pipe_Write_Stream_LE(ReportOUTData, ReportLength, NULL);
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/* Clear the OUT endpoint, send last data packet */
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Pipe_ClearOUT();
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/* Refreeze the data OUT pipe */
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Pipe_Freeze();
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}
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else
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{
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/* Class specific request to send a HID report to the device */
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
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.bRequest = HID_REQ_SetReport,
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.wValue = ((ReportType << 8) | ReportIndex),
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.wIndex = 0,
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.wLength = ReportLength,
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};
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/* Select the control pipe for the request transfer */
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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/* Send the request to the device */
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USB_Host_SendControlRequest(ReportOUTData);
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}
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}
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