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jetsonGPIO.h
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jetsonGPIO.h
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/*
* jetsonGPIO.h
*
* Copyright (c) 2015 JetsonHacks
* www.jetsonhacks.com
*
* Based on Software by RidgeRun
* Originally from:
* https://developer.ridgerun.com/wiki/index.php/Gpio-int-test.c
* Copyright (c) 2011, RidgeRun
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the RidgeRun.
* 4. Neither the name of the RidgeRun 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 RIDGERUN ''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 RIDGERUN 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.
*/
#ifndef JETSONGPIO_H_
#define JETSONGPIO_H_
/****************************************************************
* Constants
****************************************************************/
#define SYSFS_GPIO_DIR "/sys/class/gpio"
#define POLL_TIMEOUT (3 * 1000) /* 3 seconds */
#define MAX_BUF 64
typedef unsigned int jetsonGPIO ;
typedef unsigned int pinDirection ;
typedef unsigned int pinValue ;
enum pinDirections {
inputPin = 0,
outputPin = 1
} ;
enum pinValues {
low = 0,
high = 1,
off = 0, // synonym for things like lights
on = 1
} ;
enum jetsonGPIONumber {
gpio57 = 57, // J3A1 - Pin 50
gpio160 = 160, // J3A2 - Pin 40
gpio161 = 161, // J3A2 - Pin 43
gpio162 = 162, // J3A2 - Pin 46
gpio163 = 163, // J3A2 - Pin 49
gpio164 = 164, // J3A2 - Pin 52
gpio165 = 165, // J3A2 - Pin 55
gpio166 = 166 // J3A2 - Pin 58
} ;
enum jetsonTX1GPIONumber {
gpio36 = 36, // J21 - Pin 32 - Unused - AO_DMIC_IN_CLK
gpio37 = 37, // J21 - Pin 16 - Unused - AO_DMIC_IN_DAT
gpio38 = 38, // J21 - Pin 13 - Bidir - GPIO20/AUD_INT
gpio63 = 63, // J21 - Pin 33 - Bidir - GPIO11_AP_WAKE_BT
gpio184 = 184, // J21 - Pin 18 - Input - GPIO16_MDM_WAKE_AP
gpio186 = 186, // J21 - Pin 31 - Input - GPIO9_MOTION_INT
gpio187 = 187, // J21 - Pin 37 - Output - GPIO8_ALS_PROX_INT
gpio219 = 219, // J21 - Pin 29 - Output - GPIO19_AUD_RST
} ;
enum jetsonTX1GPIONumber {
gpio298 = 298, // J21 - Pin 31 - Input - GPIO9_MOTION_INT
gpio388 = 388, // J21 - Pin 37 - Output - GPIO8_ALS_PROX_INT
gpio389 = 389, // J21 - Pin 33 - Bidir - GPIO11_AP_WAKE_BT
gpio398 = 398, // J21 - Pin 29 - Output - GPIO19_AUD_RST
gpio481 = 481, // J21 - Pin 18 - Input - GPIO16_MDM_WAKE_AP
} ;
int gpioExport ( jetsonGPIO gpio ) ;
int gpioUnexport ( jetsonGPIO gpio ) ;
int gpioSetDirection ( jetsonGPIO, pinDirection out_flag ) ;
int gpioSetValue ( jetsonGPIO gpio, pinValue value ) ;
int gpioGetValue ( jetsonGPIO gpio, unsigned int *value ) ;
int gpioSetEdge ( jetsonGPIO gpio, char *edge ) ;
int gpioOpen ( jetsonGPIO gpio ) ;
int gpioClose ( int fileDescriptor ) ;
int gpioActiveLow ( jetsonGPIO gpio, unsigned int value ) ;
#endif // JETSONGPIO_H_