140 lines
6.1 KiB
C
140 lines
6.1 KiB
C
//*****************************************************************************
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//
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// gpio.h
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//
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// Defines and Macros for GPIO API.
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//
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// Copyright (C) 2014 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 __GPIO_H__
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#define __GPIO_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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// The following values define the bit field for the ucPins argument to several
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// of the APIs.
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//
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//*****************************************************************************
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#define GPIO_PIN_0 0x00000001 // GPIO pin 0
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#define GPIO_PIN_1 0x00000002 // GPIO pin 1
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#define GPIO_PIN_2 0x00000004 // GPIO pin 2
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#define GPIO_PIN_3 0x00000008 // GPIO pin 3
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#define GPIO_PIN_4 0x00000010 // GPIO pin 4
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#define GPIO_PIN_5 0x00000020 // GPIO pin 5
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#define GPIO_PIN_6 0x00000040 // GPIO pin 6
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#define GPIO_PIN_7 0x00000080 // GPIO pin 7
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//*****************************************************************************
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//
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// Values that can be passed to GPIODirModeSet as the ulPinIO parameter, and
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// returned from GPIODirModeGet.
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//
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//*****************************************************************************
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#define GPIO_DIR_MODE_IN 0x00000000 // Pin is a GPIO input
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#define GPIO_DIR_MODE_OUT 0x00000001 // Pin is a GPIO output
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//*****************************************************************************
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//
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// Values that can be passed to GPIOIntTypeSet as the ulIntType parameter, and
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// returned from GPIOIntTypeGet.
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//
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//*****************************************************************************
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#define GPIO_FALLING_EDGE 0x00000000 // Interrupt on falling edge
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#define GPIO_RISING_EDGE 0x00000004 // Interrupt on rising edge
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#define GPIO_BOTH_EDGES 0x00000001 // Interrupt on both edges
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#define GPIO_LOW_LEVEL 0x00000002 // Interrupt on low level
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#define GPIO_HIGH_LEVEL 0x00000006 // Interrupt on high level
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//*****************************************************************************
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//
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// Values that can be passed to GPIOIntEnable() and GPIOIntDisable() functions
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// in the ulIntFlags parameter.
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//
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//*****************************************************************************
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#define GPIO_INT_DMA 0x00000100
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#define GPIO_INT_PIN_0 0x00000001
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#define GPIO_INT_PIN_1 0x00000002
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#define GPIO_INT_PIN_2 0x00000004
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#define GPIO_INT_PIN_3 0x00000008
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#define GPIO_INT_PIN_4 0x00000010
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#define GPIO_INT_PIN_5 0x00000020
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#define GPIO_INT_PIN_6 0x00000040
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#define GPIO_INT_PIN_7 0x00000080
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//*****************************************************************************
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//
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// Prototypes for the APIs.
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//
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//*****************************************************************************
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extern void GPIODirModeSet(unsigned long ulPort, unsigned char ucPins,
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unsigned long ulPinIO);
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extern unsigned long GPIODirModeGet(unsigned long ulPort, unsigned char ucPin);
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extern void GPIOIntTypeSet(unsigned long ulPort, unsigned char ucPins,
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unsigned long ulIntType);
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extern void GPIODMATriggerEnable(unsigned long ulPort);
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extern void GPIODMATriggerDisable(unsigned long ulPort);
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extern unsigned long GPIOIntTypeGet(unsigned long ulPort, unsigned char ucPin);
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extern void GPIOIntEnable(unsigned long ulPort, unsigned long ulIntFlags);
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extern void GPIOIntDisable(unsigned long ulPort, unsigned long ulIntFlags);
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extern long GPIOIntStatus(unsigned long ulPort, tBoolean bMasked);
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extern void GPIOIntClear(unsigned long ulPort, unsigned long ulIntFlags);
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extern void GPIOIntRegister(unsigned long ulPort,
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void (*pfnIntHandler)(void));
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extern void GPIOIntUnregister(unsigned long ulPort);
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extern long GPIOPinRead(unsigned long ulPort, unsigned char ucPins);
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extern void GPIOPinWrite(unsigned long ulPort, unsigned char ucPins,
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unsigned char ucVal);
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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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#endif // __GPIO_H__
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