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122 lines
4.9 KiB
C
122 lines
4.9 KiB
C
// *************************************************************************************************
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//
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// Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
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//
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// *************************************************************************************************
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#ifndef BUTTONS_H_
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#define BUTTONS_H_
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// *************************************************************************************************
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// Defines section
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// Port, pins and interrupt resources for buttons
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#define BUTTONS_IN (P2IN)
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#define BUTTONS_OUT (P2OUT)
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#define BUTTONS_DIR (P2DIR)
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#define BUTTONS_REN (P2REN)
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#define BUTTONS_IE (P2IE)
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#define BUTTONS_IES (P2IES)
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#define BUTTONS_IFG (P2IFG)
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#define BUTTONS_IRQ_VECT2 (PORT2_VECTOR)
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// Button ports
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#define BUTTON_STAR_PIN (BIT2)
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#define BUTTON_NUM_PIN (BIT1)
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#define BUTTON_UP_PIN (BIT4)
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#define BUTTON_DOWN_PIN (BIT0)
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#define BUTTON_BACKLIGHT_PIN (BIT3)
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#define ALL_BUTTONS (BUTTON_STAR_PIN + BUTTON_NUM_PIN + BUTTON_UP_PIN + BUTTON_DOWN_PIN + BUTTON_BACKLIGHT_PIN)
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// Macros for button press detection
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#define BUTTON_STAR_IS_PRESSED ((BUTTONS_IN & BUTTON_STAR_PIN) == BUTTON_STAR_PIN)
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#define BUTTON_NUM_IS_PRESSED ((BUTTONS_IN & BUTTON_NUM_PIN) == BUTTON_NUM_PIN)
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#define BUTTON_UP_IS_PRESSED ((BUTTONS_IN & BUTTON_UP_PIN) == BUTTON_UP_PIN)
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#define BUTTON_DOWN_IS_PRESSED ((BUTTONS_IN & BUTTON_DOWN_PIN) == BUTTON_DOWN_PIN)
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#define BUTTON_BACKLIGHT_IS_PRESSED ((BUTTONS_IN & BUTTON_BACKLIGHT_PIN) == BUTTON_BACKLIGHT_PIN)
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#define NO_BUTTON_IS_PRESSED ((BUTTONS_IN & ALL_BUTTONS) == 0)
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// Macros for button release detection
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#define BUTTON_STAR_IS_RELEASED ((BUTTONS_IN & BUTTON_STAR_PIN) == 0)
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#define BUTTON_NUM_IS_RELEASED ((BUTTONS_IN & BUTTON_NUM_PIN) == 0)
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#define BUTTON_UP_IS_RELEASED (BUTTONS_IN & BUTTON_UP_PIN) == 0)
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#define BUTTON_DOWN_IS_RELEASED ((BUTTONS_IN & BUTTON_DOWN_PIN) == 0)
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#define BUTTON_BACKLIGHT_IS_RELEASED ((BUTTONS_IN & BUTTON_BACKLIGHT_PIN) == 0)
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// Button debounce time (msec)
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#define BUTTONS_DEBOUNCE_TIME_IN (5u)
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#define BUTTONS_DEBOUNCE_TIME_OUT (250u)
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#define BUTTONS_DEBOUNCE_TIME_LEFT (50u)
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// Detect if STAR / NUM button is held low continuously
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#define LEFT_BUTTON_LONG_TIME (1u)
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// Leave set_value() function after some seconds of user inactivity
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#define INACTIVITY_TIME (30u)
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// Set of button flags
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typedef union
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{
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struct
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{
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// Manual button events
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u16 star : 1; // Short STAR button press
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u16 num : 1; // Short NUM button press
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u16 up : 1; // Short UP button press
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u16 down : 1; // Short DOWN button press
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u16 backlight : 1; // Short BACKLIGHT button press
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u16 star_long : 1; // Long STAR button press
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u16 num_long : 1; // Long NUM button press
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} flag;
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u16 all_flags; // Shortcut to all display flags (for reset)
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} s_button_flags;
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extern volatile s_button_flags button;
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struct struct_button
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{
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u8 star_timeout;
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u8 num_timeout;
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s16 repeats;
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};
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extern volatile struct struct_button sButton;
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// *************************************************************************************************
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// Extern section
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extern void button_repeat_on(u16 msec);
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extern void button_repeat_off(void);
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extern void button_repeat_function(void);
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extern void init_buttons(void);
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#endif /*BUTTONS_H_*/
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