/** * \addtogroup timer * @{ */ /** * \file * Timer library implementation. * \author * Adam Dunkels */ /* * Copyright (c) 2004, Swedish Institute of Computer Science. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * This file is part of the uIP TCP/IP stack * * Author: Adam Dunkels * * $Id: timer.c,v 1.2 2006/06/12 08:00:30 adam Exp $ */ #include "clock.h" #include "timer.h" /*---------------------------------------------------------------------------*/ /** * Set a timer. * * This function is used to set a timer for a time sometime in the * future. The function timer_expired() will evaluate to true after * the timer has expired. * * \param t A pointer to the timer * \param interval The interval before the timer expires. * */ void timer_set(struct timer *t, clock_time_t interval) { t->interval = interval; t->start = clock_time(); } /*---------------------------------------------------------------------------*/ /** * Reset the timer with the same interval. * * This function resets the timer with the same interval that was * given to the timer_set() function. The start point of the interval * is the exact time that the timer last expired. Therefore, this * function will cause the timer to be stable over time, unlike the * timer_restart() function. * * \param t A pointer to the timer. * * \sa timer_restart() */ void timer_reset(struct timer *t) { t->start += t->interval; } /*---------------------------------------------------------------------------*/ /** * Restart the timer from the current point in time * * This function restarts a timer with the same interval that was * given to the timer_set() function. The timer will start at the * current time. * * \note A periodic timer will drift if this function is used to reset * it. For periodic timers, use the timer_reset() function instead. * * \param t A pointer to the timer. * * \sa timer_reset() */ void timer_restart(struct timer *t) { t->start = clock_time(); } /*---------------------------------------------------------------------------*/ /** * Check if a timer has expired. * * This function tests if a timer has expired and returns true or * false depending on its status. * * \param t A pointer to the timer * * \return Non-zero if the timer has expired, zero otherwise. * */ int timer_expired(struct timer *t) { return (clock_time_t)(clock_time() - t->start) >= (clock_time_t)t->interval; } /*---------------------------------------------------------------------------*/ /** @} */ ='#n29'>29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 
# MCU name
#MCU = at90usb1287
MCU = atmega32u4

# Processor frequency.
#     This will define a symbol, F_CPU, in all source code files equal to the
#     processor frequency in Hz. You can then use this symbol in your source code to
#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
#     automatically to create a 32-bit value in your source code.
#
#     This will be an integer division of F_USB below, as it is sourced by
#     F_USB after it has run through any CPU prescalers. Note that this value
#     does not *change* the processor frequency - it should merely be updated to
#     reflect the processor speed set externally so that the code can use accurate
#     software delays.
F_CPU = 16000000


#
# LUFA specific
#
# Target architecture (see library "Board Types" documentation).
ARCH = AVR8

# Input clock frequency.
#     This will define a symbol, F_USB, in all source code files equal to the
#     input clock frequency (before any prescaling is performed) in Hz. This value may
#     differ from F_CPU if prescaling is used on the latter, and is required as the
#     raw input clock is fed directly to the PLL sections of the AVR for high speed
#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
#     at the end, this will be done automatically to create a 32-bit value in your
#     source code.
#
#     If no clock division is performed on the input clock inside the AVR (via the
#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
F_USB = $(F_CPU)

# Interrupt driven control endpoint task(+60)
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT


# Boot Section Size in *bytes*
#   Teensy halfKay   512
#   Teensy++ halfKay 1024
#   Atmel DFU loader 4096
#   LUFA bootloader  4096
#   USBaspLoader     2048
OPT_DEFS += -DBOOTLOADER_SIZE=4096


# Build Options
#   comment out to disable the options.
#
BOOTMAGIC_ENABLE = no	# Virtual DIP switch configuration(+1000)
MOUSEKEY_ENABLE = no	# Mouse keys(+4700)
EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
CONSOLE_ENABLE = yes	# Console for debug(+400)
COMMAND_ENABLE = yes    # Commands for debug and configuration
NKRO_ENABLE = yes		# USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
RGBLIGHT_ENABLE = no   # Enable keyboard underlight functionality (+4870)
BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality (+1150)
MIDI_ENABLE = no 		# MIDI controls
AUDIO_ENABLE = no
UNICODE_ENABLE = no 		# Unicode
BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID