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Diffstat (limited to 'lib/lufa/Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c')
| -rw-r--r-- | lib/lufa/Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c b/lib/lufa/Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c new file mode 100644 index 000000000..413ce375b --- /dev/null +++ b/lib/lufa/Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.c @@ -0,0 +1,269 @@ +/* + 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 GenericHIDHost demo. This file contains the main tasks of + * the demo and is responsible for the initial application hardware configuration. + */ + +#include "GenericHIDHost.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(); + + puts_P(PSTR(ESC_FG_CYAN "Generic HID Host Demo running.\r\n" ESC_FG_WHITE)); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + GlobalInterruptEnable(); + + for (;;) + { + ReadNextReport(); + + 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); +#endif + + /* Hardware Initialization */ + Serial_Init(9600, false); + LEDs_Init(); + USB_Init(); + + /* Create a stdio stream for the serial port for stdin and stdout */ + Serial_CreateStream(NULL); +} + +/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and + * starts the library USB task to begin the enumeration and USB management process. + */ +void EVENT_USB_Host_DeviceAttached(void) +{ + puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE)); + LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} + +/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and + * stops the library USB task management process. + */ +void EVENT_USB_Host_DeviceUnattached(void) +{ + puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE)); + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} + +/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully + * enumerated by the host and is now ready to be used by the application. + */ +void EVENT_USB_Host_DeviceEnumerationComplete(void) +{ + puts_P(PSTR("Getting Config Data.\r\n")); + + uint8_t ErrorCode; + + /* Get and process the configuration descriptor data */ + if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead) + { + if (ErrorCode == ControlError) + puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n")); + else + puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n")); + + printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */ + if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful) + { + printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n" + " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + puts_P(PSTR("HID Device Enumerated.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_READY); +} + +/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */ +void EVENT_USB_Host_HostError(const uint8_t ErrorCode) +{ + USB_Disable(); + + printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n" + " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + for(;;); +} + +/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while + * enumerating an attached USB device. + */ +void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, + const uint8_t SubErrorCode) +{ + printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n" + " -- Error Code %d\r\n" + " -- Sub Error Code %d\r\n" + " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +} + +/** Reads in and processes the next report from the attached device, displaying the report + * contents on the board LEDs and via the serial port. + */ +void ReadNextReport(void) +{ + if (USB_HostState != HOST_STATE_Configured) + return; + + /* Select and unfreeze HID data IN pipe */ + Pipe_SelectPipe(HID_DATA_IN_PIPE); + Pipe_Unfreeze(); + + /* Check to see if a packet has been received */ + if (!(Pipe_IsINReceived())) + { + /* Refreeze HID data IN pipe */ + Pipe_Freeze(); + + return; + } + + /* Ensure pipe contains data before trying to read from it */ + if (Pipe_IsReadWriteAllowed()) + { + uint8_t ReportINData[Pipe_BytesInPipe()]; + + /* Read in HID report data */ + Pipe_Read_Stream_LE(&ReportINData, sizeof(ReportINData), NULL); + + /* Print report data through the serial port */ + for (uint16_t CurrByte = 0; CurrByte < sizeof(ReportINData); CurrByte++) + printf_P(PSTR("0x%02X "), ReportINData[CurrByte]); + + puts_P(PSTR("\r\n")); + } + + /* Clear the IN endpoint, ready for next data packet */ + Pipe_ClearIN(); + + /* Refreeze HID data IN pipe */ + Pipe_Freeze(); +} + +/** Writes a report to the attached device. + * + * \param[in] ReportOUTData Buffer containing the report to send to the device + * \param[in] ReportIndex Index of the report in the device (zero if the device does not use multiple reports) + * \param[in] ReportType Type of report to send, either REPORT_TYPE_OUT or REPORT_TYPE_FEATURE + * \param[in] ReportLength Length of the report to send + */ +void WriteNextReport(uint8_t* ReportOUTData, + const uint8_t ReportIndex, + const uint8_t ReportType, + uint16_t ReportLength) +{ + if (USB_HostState != HOST_STATE_Configured) + return; + + /* Select the HID data OUT pipe */ + Pipe_SelectPipe(HID_DATA_OUT_PIPE); + + /* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the + * control endpoint instead) - check to see if the OUT endpoint has been initialized */ + if (Pipe_IsConfigured() && (ReportType == REPORT_TYPE_OUT)) + { + Pipe_Unfreeze(); + + /* Ensure pipe is ready to be written to before continuing */ + if (!(Pipe_IsOUTReady())) + { + /* Refreeze the data OUT pipe */ + Pipe_Freeze(); + + return; + } + + /* If the report index is used, send it before the report data */ + if (ReportIndex) + Pipe_Write_8(ReportIndex); + + /* Write out HID report data */ + Pipe_Write_Stream_LE(ReportOUTData, ReportLength, NULL); + + /* Clear the OUT endpoint, send last data packet */ + Pipe_ClearOUT(); + + /* Refreeze the data OUT pipe */ + Pipe_Freeze(); + } + else + { + /* Class specific request to send a HID report to the device */ + USB_ControlRequest = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE), + .bRequest = HID_REQ_SetReport, + .wValue = ((ReportType << 8) | ReportIndex), + .wIndex = 0, + .wLength = ReportLength, + }; + + /* Select the control pipe for the request transfer */ + Pipe_SelectPipe(PIPE_CONTROLPIPE); + + /* Send the request to the device */ + USB_Host_SendControlRequest(ReportOUTData); + } +} + |