218 lines
6.9 KiB
C
218 lines
6.9 KiB
C
|
/*
|
||
|
|
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 Joystick demo. This file contains the main tasks of the demo and
|
||
|
|
* is responsible for the initial application hardware configuration.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "Joystick.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 */
|
||
|
|
Joystick_Init();
|
||
|
|
LEDs_Init();
|
||
|
|
Buttons_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 joystick reporting 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 joystick reporting task started.
|
||
|
|
*/
|
||
|
|
void EVENT_USB_Device_ConfigurationChanged(void)
|
||
|
|
{
|
||
|
|
bool ConfigSuccess = true;
|
||
|
|
|
||
|
|
/* Setup HID Report Endpoint */
|
||
|
|
ConfigSuccess &= Endpoint_ConfigureEndpoint(JOYSTICK_EPADDR, EP_TYPE_INTERRUPT, JOYSTICK_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))
|
||
|
|
{
|
||
|
|
USB_JoystickReport_Data_t JoystickReportData;
|
||
|
|
|
||
|
|
/* Create the next HID report to send to the host */
|
||
|
|
GetNextReport(&JoystickReportData);
|
||
|
|
|
||
|
|
Endpoint_ClearSETUP();
|
||
|
|
|
||
|
|
/* Write the report data to the control endpoint */
|
||
|
|
Endpoint_Write_Control_Stream_LE(&JoystickReportData, sizeof(JoystickReportData));
|
||
|
|
Endpoint_ClearOUT();
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Fills the given HID report data structure with the next HID report to send to the host.
|
||
|
|
*
|
||
|
|
* \param[out] ReportData Pointer to a HID report data structure to be filled
|
||
|
|
*
|
||
|
|
* \return Boolean \c true if the new report differs from the last report, \c false otherwise
|
||
|
|
*/
|
||
|
|
bool GetNextReport(USB_JoystickReport_Data_t* const ReportData)
|
||
|
|
{
|
||
|
|
static uint8_t PrevJoyStatus = 0;
|
||
|
|
static uint8_t PrevButtonStatus = 0;
|
||
|
|
uint8_t JoyStatus_LCL = Joystick_GetStatus();
|
||
|
|
uint8_t ButtonStatus_LCL = Buttons_GetStatus();
|
||
|
|
bool InputChanged = false;
|
||
|
|
|
||
|
|
/* Clear the report contents */
|
||
|
|
memset(ReportData, 0, sizeof(USB_JoystickReport_Data_t));
|
||
|
|
|
||
|
|
if (JoyStatus_LCL & JOY_UP)
|
||
|
|
ReportData->Y = -100;
|
||
|
|
else if (JoyStatus_LCL & JOY_DOWN)
|
||
|
|
ReportData->Y = 100;
|
||
|
|
|
||
|
|
if (JoyStatus_LCL & JOY_LEFT)
|
||
|
|
ReportData->X = -100;
|
||
|
|
else if (JoyStatus_LCL & JOY_RIGHT)
|
||
|
|
ReportData->X = 100;
|
||
|
|
|
||
|
|
if (JoyStatus_LCL & JOY_PRESS)
|
||
|
|
ReportData->Button |= (1 << 1);
|
||
|
|
|
||
|
|
if (ButtonStatus_LCL & BUTTONS_BUTTON1)
|
||
|
|
ReportData->Button |= (1 << 0);
|
||
|
|
|
||
|
|
/* Check if the new report is different to the previous report */
|
||
|
|
InputChanged = (uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(PrevButtonStatus ^ ButtonStatus_LCL);
|
||
|
|
|
||
|
|
/* Save the current joystick status for later comparison */
|
||
|
|
PrevJoyStatus = JoyStatus_LCL;
|
||
|
|
PrevButtonStatus = ButtonStatus_LCL;
|
||
|
|
|
||
|
|
/* Return whether the new report is different to the previous report or not */
|
||
|
|
return InputChanged;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Function to manage HID report generation and transmission to the host. */
|
||
|
|
void HID_Task(void)
|
||
|
|
{
|
||
|
|
/* Device must be connected and configured for the task to run */
|
||
|
|
if (USB_DeviceState != DEVICE_STATE_Configured)
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* Select the Joystick Report Endpoint */
|
||
|
|
Endpoint_SelectEndpoint(JOYSTICK_EPADDR);
|
||
|
|
|
||
|
|
/* Check to see if the host is ready for another packet */
|
||
|
|
if (Endpoint_IsINReady())
|
||
|
|
{
|
||
|
|
USB_JoystickReport_Data_t JoystickReportData;
|
||
|
|
|
||
|
|
/* Create the next HID report to send to the host */
|
||
|
|
GetNextReport(&JoystickReportData);
|
||
|
|
|
||
|
|
/* Write Joystick Report Data */
|
||
|
|
Endpoint_Write_Stream_LE(&JoystickReportData, sizeof(JoystickReportData), NULL);
|
||
|
|
|
||
|
|
/* Finalize the stream transfer to send the last packet */
|
||
|
|
Endpoint_ClearIN();
|
||
|
|
|
||
|
|
/* Clear the report data afterwards */
|
||
|
|
memset(&JoystickReportData, 0, sizeof(JoystickReportData));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|