mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-05 01:15:19 +00:00
384 lines
12 KiB
C
384 lines
12 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)
|
|
Copyright 2010 Denver Gingerich (denver [at] ossguy [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 Keyboard demo. This file contains the main tasks of the demo and
|
|
* is responsible for the initial application hardware configuration.
|
|
*/
|
|
|
|
#include "Keyboard.h"
|
|
|
|
/** Indicates what report mode the host has requested, true for normal HID reporting mode, \c false for special boot
|
|
* protocol reporting mode.
|
|
*/
|
|
static bool UsingReportProtocol = true;
|
|
|
|
/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports
|
|
* for either the entire idle duration, or until the report status changes (e.g. the user presses a key).
|
|
*/
|
|
static uint16_t IdleCount = 500;
|
|
|
|
/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
|
|
* milliseconds. This is separate to the IdleCount timer and is incremented and compared as the host may request
|
|
* the current idle period via a Get Idle HID class request, thus its value must be preserved.
|
|
*/
|
|
static uint16_t IdleMSRemaining = 0;
|
|
|
|
|
|
/** 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();
|
|
USB_Init();
|
|
Buttons_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);
|
|
|
|
/* Default to report protocol on connect */
|
|
UsingReportProtocol = true;
|
|
}
|
|
|
|
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
|
|
* the status LEDs.
|
|
*/
|
|
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 keyboard device endpoints.
|
|
*/
|
|
void EVENT_USB_Device_ConfigurationChanged(void)
|
|
{
|
|
bool ConfigSuccess = true;
|
|
|
|
/* Setup HID Report Endpoints */
|
|
ConfigSuccess &= Endpoint_ConfigureEndpoint(KEYBOARD_IN_EPADDR, EP_TYPE_INTERRUPT, KEYBOARD_EPSIZE, 1);
|
|
ConfigSuccess &= Endpoint_ConfigureEndpoint(KEYBOARD_OUT_EPADDR, EP_TYPE_INTERRUPT, KEYBOARD_EPSIZE, 1);
|
|
|
|
/* Turn on Start-of-Frame events for tracking HID report period expiry */
|
|
USB_Device_EnableSOFEvents();
|
|
|
|
/* 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_KeyboardReport_Data_t KeyboardReportData;
|
|
|
|
/* Create the next keyboard report for transmission to the host */
|
|
CreateKeyboardReport(&KeyboardReportData);
|
|
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Write the report data to the control endpoint */
|
|
Endpoint_Write_Control_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
|
|
Endpoint_ClearOUT();
|
|
}
|
|
|
|
break;
|
|
case HID_REQ_SetReport:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Wait until the LED report has been sent by the host */
|
|
while (!(Endpoint_IsOUTReceived()))
|
|
{
|
|
if (USB_DeviceState == DEVICE_STATE_Unattached)
|
|
return;
|
|
}
|
|
|
|
/* Read in the LED report from the host */
|
|
uint8_t LEDStatus = Endpoint_Read_8();
|
|
|
|
Endpoint_ClearOUT();
|
|
Endpoint_ClearStatusStage();
|
|
|
|
/* Process the incoming LED report */
|
|
ProcessLEDReport(LEDStatus);
|
|
}
|
|
|
|
break;
|
|
case HID_REQ_GetProtocol:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Write the current protocol flag to the host */
|
|
Endpoint_Write_8(UsingReportProtocol);
|
|
|
|
Endpoint_ClearIN();
|
|
Endpoint_ClearStatusStage();
|
|
}
|
|
|
|
break;
|
|
case HID_REQ_SetProtocol:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSETUP();
|
|
Endpoint_ClearStatusStage();
|
|
|
|
/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
|
|
UsingReportProtocol = (USB_ControlRequest.wValue != 0);
|
|
}
|
|
|
|
break;
|
|
case HID_REQ_SetIdle:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSETUP();
|
|
Endpoint_ClearStatusStage();
|
|
|
|
/* Get idle period in MSB, IdleCount must be multiplied by 4 to get number of milliseconds */
|
|
IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
|
|
}
|
|
|
|
break;
|
|
case HID_REQ_GetIdle:
|
|
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
|
|
{
|
|
Endpoint_ClearSETUP();
|
|
|
|
/* Write the current idle duration to the host, must be divided by 4 before sent to host */
|
|
Endpoint_Write_8(IdleCount >> 2);
|
|
|
|
Endpoint_ClearIN();
|
|
Endpoint_ClearStatusStage();
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** Event handler for the USB device Start Of Frame event. */
|
|
void EVENT_USB_Device_StartOfFrame(void)
|
|
{
|
|
/* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */
|
|
if (IdleMSRemaining)
|
|
IdleMSRemaining--;
|
|
}
|
|
|
|
/** 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
|
|
*/
|
|
void CreateKeyboardReport(USB_KeyboardReport_Data_t* const ReportData)
|
|
{
|
|
uint8_t JoyStatus_LCL = Joystick_GetStatus();
|
|
uint8_t ButtonStatus_LCL = Buttons_GetStatus();
|
|
|
|
uint8_t UsedKeyCodes = 0;
|
|
|
|
/* Clear the report contents */
|
|
memset(ReportData, 0, sizeof(USB_KeyboardReport_Data_t));
|
|
|
|
/* Make sent key uppercase by indicating that the left shift key is pressed */
|
|
ReportData->Modifier = HID_KEYBOARD_MODIFIER_LEFTSHIFT;
|
|
|
|
if (JoyStatus_LCL & JOY_UP)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_A;
|
|
else if (JoyStatus_LCL & JOY_DOWN)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_B;
|
|
|
|
if (JoyStatus_LCL & JOY_LEFT)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_C;
|
|
else if (JoyStatus_LCL & JOY_RIGHT)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_D;
|
|
|
|
if (JoyStatus_LCL & JOY_PRESS)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_E;
|
|
|
|
if (ButtonStatus_LCL & BUTTONS_BUTTON1)
|
|
ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_F;
|
|
}
|
|
|
|
/** Processes a received LED report, and updates the board LEDs states to match.
|
|
*
|
|
* \param[in] LEDReport LED status report from the host
|
|
*/
|
|
void ProcessLEDReport(const uint8_t LEDReport)
|
|
{
|
|
uint8_t LEDMask = LEDS_LED2;
|
|
|
|
if (LEDReport & HID_KEYBOARD_LED_NUMLOCK)
|
|
LEDMask |= LEDS_LED1;
|
|
|
|
if (LEDReport & HID_KEYBOARD_LED_CAPSLOCK)
|
|
LEDMask |= LEDS_LED3;
|
|
|
|
if (LEDReport & HID_KEYBOARD_LED_SCROLLLOCK)
|
|
LEDMask |= LEDS_LED4;
|
|
|
|
/* Set the status LEDs to the current Keyboard LED status */
|
|
LEDs_SetAllLEDs(LEDMask);
|
|
}
|
|
|
|
/** Sends the next HID report to the host, via the keyboard data endpoint. */
|
|
void SendNextReport(void)
|
|
{
|
|
static USB_KeyboardReport_Data_t PrevKeyboardReportData;
|
|
USB_KeyboardReport_Data_t KeyboardReportData;
|
|
bool SendReport = false;
|
|
|
|
/* Create the next keyboard report for transmission to the host */
|
|
CreateKeyboardReport(&KeyboardReportData);
|
|
|
|
/* Check if the idle period is set and has elapsed */
|
|
if (IdleCount && (!(IdleMSRemaining)))
|
|
{
|
|
/* Reset the idle time remaining counter */
|
|
IdleMSRemaining = IdleCount;
|
|
|
|
/* Idle period is set and has elapsed, must send a report to the host */
|
|
SendReport = true;
|
|
}
|
|
else
|
|
{
|
|
/* Check to see if the report data has changed - if so a report MUST be sent */
|
|
SendReport = (memcmp(&PrevKeyboardReportData, &KeyboardReportData, sizeof(USB_KeyboardReport_Data_t)) != 0);
|
|
}
|
|
|
|
/* Select the Keyboard Report Endpoint */
|
|
Endpoint_SelectEndpoint(KEYBOARD_IN_EPADDR);
|
|
|
|
/* Check if Keyboard Endpoint Ready for Read/Write and if we should send a new report */
|
|
if (Endpoint_IsReadWriteAllowed() && SendReport)
|
|
{
|
|
/* Save the current report data for later comparison to check for changes */
|
|
PrevKeyboardReportData = KeyboardReportData;
|
|
|
|
/* Write Keyboard Report Data */
|
|
Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData), NULL);
|
|
|
|
/* Finalize the stream transfer to send the last packet */
|
|
Endpoint_ClearIN();
|
|
}
|
|
}
|
|
|
|
/** Reads the next LED status report from the host from the LED data endpoint, if one has been sent. */
|
|
void ReceiveNextReport(void)
|
|
{
|
|
/* Select the Keyboard LED Report Endpoint */
|
|
Endpoint_SelectEndpoint(KEYBOARD_OUT_EPADDR);
|
|
|
|
/* Check if Keyboard LED Endpoint contains a packet */
|
|
if (Endpoint_IsOUTReceived())
|
|
{
|
|
/* Check to see if the packet contains data */
|
|
if (Endpoint_IsReadWriteAllowed())
|
|
{
|
|
/* Read in the LED report from the host */
|
|
uint8_t LEDReport = Endpoint_Read_8();
|
|
|
|
/* Process the read LED report from the host */
|
|
ProcessLEDReport(LEDReport);
|
|
}
|
|
|
|
/* Handshake the OUT Endpoint - clear endpoint and ready for next report */
|
|
Endpoint_ClearOUT();
|
|
}
|
|
}
|
|
|
|
/** Function to manage HID report generation and transmission to the host, when in report mode. */
|
|
void HID_Task(void)
|
|
{
|
|
/* Device must be connected and configured for the task to run */
|
|
if (USB_DeviceState != DEVICE_STATE_Configured)
|
|
return;
|
|
|
|
/* Send the next keypress report to the host */
|
|
SendNextReport();
|
|
|
|
/* Process the LED report sent from the host */
|
|
ReceiveNextReport();
|
|
}
|
|
|