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tmk_keyboard/tmk_core/protocol/lufa/lufa.c

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/*
* Copyright 2012 Jun Wako <wakojun@gmail.com>
* This file is based on:
* LUFA-120219/Demos/Device/Lowlevel/KeyboardMouse
* LUFA-120219/Demos/Device/Lowlevel/GenericHID
*/
/*
LUFA Library
Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2012 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 disclaim 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.
*/
#include "report.h"
#include "host.h"
#include "host_driver.h"
#include "keyboard.h"
#include "action.h"
#include "led.h"
#include "sendchar.h"
#include "debug.h"
#ifdef SLEEP_LED_ENABLE
#include "sleep_led.h"
#endif
#include "suspend.h"
#include "hook.h"
#ifdef LUFA_DEBUG_SUART
#include "avr/suart.h"
#endif
#include "matrix.h"
#include "descriptor.h"
#include "lufa.h"
//#define LUFA_DEBUG
uint8_t keyboard_idle = 0;
/* 0: Boot Protocol, 1: Report Protocol(default) */
uint8_t keyboard_protocol = 1;
static uint8_t keyboard_led_stats = 0;
static report_keyboard_t keyboard_report_sent;
/* Host driver */
static uint8_t keyboard_leds(void);
static void send_keyboard(report_keyboard_t *report);
static void send_mouse(report_mouse_t *report);
static void send_system(uint16_t data);
static void send_consumer(uint16_t data);
host_driver_t lufa_driver = {
keyboard_leds,
send_keyboard,
send_mouse,
send_system,
send_consumer
};
/*******************************************************************************
* Console
******************************************************************************/
#ifdef CONSOLE_ENABLE
static void Console_Task(void)
{
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
uint8_t ep = Endpoint_GetCurrentEndpoint();
#if 0
// TODO: impl receivechar()/recvchar()
Endpoint_SelectEndpoint(CONSOLE_OUT_EPNUM);
/* 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 ConsoleData[CONSOLE_EPSIZE];
/* Read Console Report Data */
Endpoint_Read_Stream_LE(&ConsoleData, sizeof(ConsoleData), NULL);
/* Process Console Report Data */
//ProcessConsoleHIDReport(ConsoleData);
}
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearOUT();
}
#endif
/* IN packet */
Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
Endpoint_SelectEndpoint(ep);
return;
}
// fill empty bank
while (Endpoint_IsReadWriteAllowed())
Endpoint_Write_8(0);
// flash senchar packet
if (Endpoint_IsINReady()) {
Endpoint_ClearIN();
}
Endpoint_SelectEndpoint(ep);
}
#else
static void Console_Task(void)
{
}
#endif
/*******************************************************************************
* USB Events
******************************************************************************/
/*
* Event Order of Plug in:
* 0) EVENT_USB_Device_Connect
* 1) EVENT_USB_Device_Suspend
* 2) EVENT_USB_Device_Reset
* 3) EVENT_USB_Device_Wake
*/
void EVENT_USB_Device_Connect(void)
{
print("[C]");
/* For battery powered device */
if (!USB_IsInitialized) {
USB_Disable();
USB_Init();
USB_Device_EnableSOFEvents();
}
}
void EVENT_USB_Device_Disconnect(void)
{
print("[D]");
/* For battery powered device */
USB_IsInitialized = false;
/* TODO: This doesn't work. After several plug in/outs can not be enumerated.
if (USB_IsInitialized) {
USB_Disable(); // Disable all interrupts
USB_Controller_Enable();
USB_INT_Enable(USB_INT_VBUSTI);
}
*/
}
void EVENT_USB_Device_Reset(void)
{
#ifdef LUFA_DEBUG
print("[R]");
#endif
}
void EVENT_USB_Device_Suspend()
{
#ifdef LUFA_DEBUG
print("[S]");
#endif
hook_usb_suspend_entry();
}
void EVENT_USB_Device_WakeUp()
{
#ifdef LUFA_DEBUG
print("[W]");
#endif
hook_usb_wakeup();
}
#ifdef CONSOLE_ENABLE
static bool console_flush = false;
#define CONSOLE_FLUSH_SET(b) do { \
uint8_t sreg = SREG; cli(); console_flush = b; SREG = sreg; \
} while (0)
// called every 1ms
void EVENT_USB_Device_StartOfFrame(void)
{
static uint8_t count;
if (++count % 50) return;
count = 0;
if (!console_flush) return;
Console_Task();
console_flush = false;
}
#endif
/** Event handler for the USB_ConfigurationChanged event.
* This is fired when the host sets the current configuration of the USB device after enumeration.
*
* ATMega32u2 supports dual bank(ping-pong mode) only on endpoint 3 and 4,
* it is safe to use singl bank for all endpoints.
*/
void EVENT_USB_Device_ConfigurationChanged(void)
{
#ifdef LUFA_DEBUG
print("[c]");
#endif
bool ConfigSuccess = true;
/* Setup Keyboard HID Report Endpoints */
ConfigSuccess &= ENDPOINT_CONFIG(KEYBOARD_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
KEYBOARD_EPSIZE, ENDPOINT_BANK_SINGLE);
#ifdef MOUSE_ENABLE
/* Setup Mouse HID Report Endpoint */
ConfigSuccess &= ENDPOINT_CONFIG(MOUSE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
MOUSE_EPSIZE, ENDPOINT_BANK_SINGLE);
#endif
#ifdef EXTRAKEY_ENABLE
/* Setup Extra HID Report Endpoint */
ConfigSuccess &= ENDPOINT_CONFIG(EXTRAKEY_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
EXTRAKEY_EPSIZE, ENDPOINT_BANK_SINGLE);
#endif
#ifdef CONSOLE_ENABLE
/* Setup Console HID Report Endpoints */
ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
#if 0
ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_OUT_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_OUT,
CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
#endif
#endif
#ifdef NKRO_ENABLE
/* Setup NKRO HID Report Endpoints */
ConfigSuccess &= ENDPOINT_CONFIG(NKRO_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
NKRO_EPSIZE, ENDPOINT_BANK_SINGLE);
#endif
}
/*
Appendix G: HID Request Support Requirements
The following table enumerates the requests that need to be supported by various types of HID class devices.
Device type GetReport SetReport GetIdle SetIdle GetProtocol SetProtocol
------------------------------------------------------------------------------------------
Boot Mouse Required Optional Optional Optional Required Required
Non-Boot Mouse Required Optional Optional Optional Optional Optional
Boot Keyboard Required Optional Required Required Required Required
Non-Boot Keybrd Required Optional Required Required Optional Optional
Other Device Required Optional Optional Optional Optional Optional
*/
/** Event handler for the USB_ControlRequest event.
* This is fired before passing along unhandled control requests to the library for processing internally.
*/
void EVENT_USB_Device_ControlRequest(void)
{
uint8_t* ReportData = NULL;
uint8_t ReportSize = 0;
/* Handle HID Class specific requests */
switch (USB_ControlRequest.bRequest)
{
case HID_REQ_GetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
// Interface
switch (USB_ControlRequest.wIndex) {
case KEYBOARD_INTERFACE:
// TODO: test/check
ReportData = (uint8_t*)&keyboard_report_sent;
ReportSize = sizeof(keyboard_report_sent);
break;
}
/* Write the report data to the control endpoint */
Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
Endpoint_ClearOUT();
#ifdef LUFA_DEBUG
xprintf("[r%d]", USB_ControlRequest.wIndex);
#endif
}
break;
case HID_REQ_SetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
// Interface
switch (USB_ControlRequest.wIndex) {
case KEYBOARD_INTERFACE:
#ifdef NKRO_ENABLE
case NKRO_INTERFACE:
#endif
Endpoint_ClearSETUP();
while (!(Endpoint_IsOUTReceived())) {
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
keyboard_led_stats = Endpoint_Read_8();
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
#ifdef LUFA_DEBUG
xprintf("[L%d]", USB_ControlRequest.wIndex);
#endif
break;
}
}
break;
case HID_REQ_GetProtocol:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()));
Endpoint_Write_8(keyboard_protocol);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
#ifdef LUFA_DEBUG
print("[p]");
#endif
}
}
break;
case HID_REQ_SetProtocol:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
keyboard_protocol = (USB_ControlRequest.wValue & 0xFF);
clear_keyboard();
#ifdef LUFA_DEBUG
print("[P]");
#endif
}
}
break;
case HID_REQ_SetIdle:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
keyboard_idle = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
#ifdef LUFA_DEBUG
xprintf("[I%d]%d", USB_ControlRequest.wIndex, (USB_ControlRequest.wValue & 0xFF00) >> 8);
#endif
}
break;
case HID_REQ_GetIdle:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()));
Endpoint_Write_8(keyboard_idle);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
#ifdef LUFA_DEBUG
print("[i]");
#endif
}
break;
}
}
/*******************************************************************************
* Host driver
******************************************************************************/
static uint8_t keyboard_leds(void)
{
return keyboard_led_stats;
}
static void send_keyboard(report_keyboard_t *report)
{
uint8_t timeout = 255;
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Select the Keyboard Report Endpoint */
#ifdef NKRO_ENABLE
if (keyboard_protocol && keyboard_nkro) {
/* Report protocol - NKRO */
Endpoint_SelectEndpoint(NKRO_IN_EPNUM);
/* Check if write ready for a polling interval around 1ms */
while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(4);
if (!Endpoint_IsReadWriteAllowed()) return;
/* Write Keyboard Report Data */
Endpoint_Write_Stream_LE(report, NKRO_EPSIZE, NULL);
}
else
#endif
{
/* Boot protocol */
Endpoint_SelectEndpoint(KEYBOARD_IN_EPNUM);
/* Check if write ready for a polling interval around 10ms */
while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
if (!Endpoint_IsReadWriteAllowed()) return;
/* Write Keyboard Report Data */
Endpoint_Write_Stream_LE(report, KEYBOARD_EPSIZE, NULL);
}
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearIN();
keyboard_report_sent = *report;
}
static void send_mouse(report_mouse_t *report)
{
#ifdef MOUSE_ENABLE
uint8_t timeout = 255;
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Select the Mouse Report Endpoint */
Endpoint_SelectEndpoint(MOUSE_IN_EPNUM);
/* Check if write ready for a polling interval around 10ms */
while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
if (!Endpoint_IsReadWriteAllowed()) return;
/* Write Mouse Report Data */
Endpoint_Write_Stream_LE(report, sizeof(report_mouse_t), NULL);
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearIN();
#endif
}
static void send_system(uint16_t data)
{
uint8_t timeout = 255;
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
report_extra_t r = {
.report_id = REPORT_ID_SYSTEM,
.usage = data
};
Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
/* Check if write ready for a polling interval around 10ms */
while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
if (!Endpoint_IsReadWriteAllowed()) return;
Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
Endpoint_ClearIN();
}
static void send_consumer(uint16_t data)
{
uint8_t timeout = 255;
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
report_extra_t r = {
.report_id = REPORT_ID_CONSUMER,
.usage = data
};
Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
/* Check if write ready for a polling interval around 10ms */
while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
if (!Endpoint_IsReadWriteAllowed()) return;
Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
Endpoint_ClearIN();
}
/*******************************************************************************
* sendchar
******************************************************************************/
#ifdef CONSOLE_ENABLE
#define SEND_TIMEOUT 5
int8_t sendchar(uint8_t c)
{
#ifdef LUFA_DEBUG_SUART
xmit(c);
#endif
// Not wait once timeouted.
// Because sendchar() is called so many times, waiting each call causes big lag.
static bool timeouted = false;
// prevents Console_Task() from running during sendchar() runs.
// or char will be lost. These two function is mutually exclusive.
CONSOLE_FLUSH_SET(false);
if (USB_DeviceState != DEVICE_STATE_Configured)
return -1;
uint8_t ep = Endpoint_GetCurrentEndpoint();
Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
goto ERROR_EXIT;
}
if (timeouted && !Endpoint_IsReadWriteAllowed()) {
goto ERROR_EXIT;
}
timeouted = false;
uint8_t timeout = SEND_TIMEOUT;
while (!Endpoint_IsReadWriteAllowed()) {
if (USB_DeviceState != DEVICE_STATE_Configured) {
goto ERROR_EXIT;
}
if (Endpoint_IsStalled()) {
goto ERROR_EXIT;
}
if (!(timeout--)) {
timeouted = true;
goto ERROR_EXIT;
}
_delay_ms(1);
}
Endpoint_Write_8(c);
// send when bank is full
if (!Endpoint_IsReadWriteAllowed()) {
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
} else {
CONSOLE_FLUSH_SET(true);
}
Endpoint_SelectEndpoint(ep);
return 0;
ERROR_EXIT:
Endpoint_SelectEndpoint(ep);
return -1;
}
#else
int8_t sendchar(uint8_t c)
{
#ifdef LUFA_DEBUG_SUART
xmit(c);
#endif
return 0;
}
#endif
/*******************************************************************************
* main
******************************************************************************/
static void setup_mcu(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
}
static void setup_usb(void)
{
// Leonardo needs. Without this USB device is not recognized.
USB_Disable();
USB_Init();
// for Console_Task
USB_Device_EnableSOFEvents();
}
int main(void) __attribute__ ((weak));
int main(void)
{
setup_mcu();
#ifdef LUFA_DEBUG_SUART
SUART_OUT_DDR |= (1<<SUART_OUT_BIT);
SUART_OUT_PORT |= (1<<SUART_OUT_BIT);
#endif
print_set_sendchar(sendchar);
print("\r\ninit\n");
hook_early_init();
keyboard_setup();
setup_usb();
sei();
/* wait for USB startup & debug output */
while (USB_DeviceState != DEVICE_STATE_Configured) {
#if defined(INTERRUPT_CONTROL_ENDPOINT)
;
#else
USB_USBTask();
#endif
}
print("USB configured.\n");
/* init modules */
keyboard_init();
host_set_driver(&lufa_driver);
#ifdef SLEEP_LED_ENABLE
sleep_led_init();
#endif
print("Keyboard start.\n");
hook_late_init();
while (1) {
while (USB_DeviceState == DEVICE_STATE_Suspended) {
#ifdef LUFA_DEBUG
print("[s]");
#endif
hook_usb_suspend_loop();
}
keyboard_task();
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
USB_USBTask();
#endif
}
}
/* hooks */
__attribute__((weak))
void hook_early_init(void) {}
__attribute__((weak))
void hook_late_init(void) {}
static uint8_t _led_stats = 0;
__attribute__((weak))
void hook_usb_suspend_entry(void)
{
// Turn LED off to save power
// Set 0 with putting aside status before suspend and restore
// it after wakeup, then LED is updated at keyboard_task() in main loop
_led_stats = keyboard_led_stats;
keyboard_led_stats = 0;
led_set(keyboard_led_stats);
matrix_clear();
clear_keyboard();
#ifdef SLEEP_LED_ENABLE
sleep_led_enable();
#endif
}
__attribute__((weak))
void hook_usb_suspend_loop(void)
{
suspend_power_down();
if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
USB_Device_SendRemoteWakeup();
}
}
__attribute__((weak))
void hook_usb_wakeup(void)
{
suspend_wakeup_init();
#ifdef SLEEP_LED_ENABLE
sleep_led_disable();
#endif
// Restore LED status
// BIOS/grub won't recognize/enumerate if led_set() takes long(around 40ms?)
// Converters fall into the case and miss wakeup event(timeout to reply?) in the end.
//led_set(host_keyboard_leds());
// Instead, restore stats and update at keyboard_task() in main loop
keyboard_led_stats = _led_stats;
}
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