111 lines
3.9 KiB
C
111 lines
3.9 KiB
C
//*****************************************************************************
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//
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// buttons.h - Prototypes for the evaluation board buttons driver.
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//
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// Copyright (c) 2013-2017 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Texas Instruments (TI) is supplying this software for use solely and
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// exclusively on TI's microcontroller products. The software is owned by
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// TI and/or its suppliers, and is protected under applicable copyright
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// laws. You may not combine this software with "viral" open-source
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// software in order to form a larger program.
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//
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// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
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// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
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// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
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// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
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// DAMAGES, FOR ANY REASON WHATSOEVER.
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//
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// This is part of revision 2.1.4.178 of the EK-TM4C1294XL Firmware Package.
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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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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// Defines for the hardware resources used by the pushbuttons.
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//
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// The switches are on the following ports/pins:
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//
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// PJ0 - Left Button
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// PJ1 - Right Button
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//
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// The switches tie the GPIO to ground, so the GPIOs need to be configured
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// with pull-ups, and a value of 0 means the switch is pressed.
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//
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//*****************************************************************************
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#define BUTTONS_GPIO_PERIPH SYSCTL_PERIPH_GPIOJ
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#define BUTTONS_GPIO_BASE GPIO_PORTJ_BASE
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#define NUM_BUTTONS 2
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#define USR_SW1 GPIO_PIN_0
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#define USR_SW2 GPIO_PIN_1
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#define LEFT_BUTTON USR_SW1
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#define RIGHT_BUTTON USR_SW2
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#define ALL_BUTTONS (USR_SW1 | USR_SW2)
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//*****************************************************************************
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//
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// Useful macros for detecting button events.
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//
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//*****************************************************************************
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#define BUTTON_PRESSED(button, buttons, changed) \
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(((button) & (changed)) && ((button) & (buttons)))
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#define BUTTON_RELEASED(button, buttons, changed) \
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(((button) & (changed)) && !((button) & (buttons)))
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// Functions exported from buttons.c
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//
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//*****************************************************************************
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extern void ButtonsInit(void);
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extern uint8_t ButtonsPoll(uint8_t *pui8Delta,
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uint8_t *pui8Raw);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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//*****************************************************************************
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//
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// Prototypes for the globals exported by this driver.
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//
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//*****************************************************************************
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#endif // __BUTTONS_H__
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