mirror of
https://github.com/clockworkpi/WiringPi.git
synced 2025-12-12 16:08:49 +01:00
eb1fc2c920
Moved the extensions into wiringPi from gpio and made it more general purpose more so that RTB and anything else can dymanically add devices into wiringPi. Changes to GPIO to updates for the SPI and I2C module loads Added gpio unload for SPI and I2C. Added a new way to setup SPI - by passing the mode in. Support for the new Pi2 thing too
225 lines
6.3 KiB
C
225 lines
6.3 KiB
C
/*
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* wiringPi:
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* Arduino compatable (ish) Wiring library for the Raspberry Pi
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* Copyright (c) 2012 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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* https://projects.drogon.net/raspberry-pi/wiringpi/
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*
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* wiringPi is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* wiringPi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
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***********************************************************************
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*/
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#ifndef __WIRING_PI_H__
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#define __WIRING_PI_H__
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// Handy defines
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// Deprecated
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#define NUM_PINS 17
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#define WPI_MODE_PINS 0
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#define WPI_MODE_GPIO 1
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#define WPI_MODE_GPIO_SYS 2
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#define WPI_MODE_PHYS 3
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#define WPI_MODE_PIFACE 4
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#define WPI_MODE_UNINITIALISED -1
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// Pin modes
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#define INPUT 0
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#define OUTPUT 1
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#define PWM_OUTPUT 2
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#define GPIO_CLOCK 3
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#define SOFT_PWM_OUTPUT 4
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#define SOFT_TONE_OUTPUT 5
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#define PWM_TONE_OUTPUT 6
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#define LOW 0
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#define HIGH 1
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// Pull up/down/none
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#define PUD_OFF 0
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#define PUD_DOWN 1
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#define PUD_UP 2
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// PWM
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#define PWM_MODE_MS 0
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#define PWM_MODE_BAL 1
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// Interrupt levels
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#define INT_EDGE_SETUP 0
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#define INT_EDGE_FALLING 1
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#define INT_EDGE_RISING 2
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#define INT_EDGE_BOTH 3
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// Pi model types and version numbers
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// Intended for the GPIO program Use at your own risk.
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#define PI_MODEL_UNKNOWN 0
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#define PI_MODEL_A 1
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#define PI_MODEL_B 2
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#define PI_MODEL_BP 3
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#define PI_MODEL_CM 4
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#define PI_MODEL_AP 5
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#define PI_MODEL_2 6
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#define PI_VERSION_UNKNOWN 0
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#define PI_VERSION_1 1
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#define PI_VERSION_1_1 2
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#define PI_VERSION_1_2 3
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#define PI_VERSION_2 4
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#define PI_MAKER_UNKNOWN 0
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#define PI_MAKER_EGOMAN 1
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#define PI_MAKER_SONY 2
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#define PI_MAKER_QISDA 3
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#define PI_MAKER_MBEST 4
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extern const char *piModelNames [7] ;
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extern const char *piRevisionNames [5] ;
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extern const char *piMakerNames [5] ;
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// Intended for the GPIO program Use at your own risk.
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// Threads
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#define PI_THREAD(X) void *X (void *dummy)
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// Failure modes
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#define WPI_FATAL (1==1)
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#define WPI_ALMOST (1==2)
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// wiringPiNodeStruct:
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// This describes additional device nodes in the extended wiringPi
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// 2.0 scheme of things.
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// It's a simple linked list for now, but will hopefully migrate to
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// a binary tree for efficiency reasons - but then again, the chances
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// of more than 1 or 2 devices being added are fairly slim, so who
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// knows....
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struct wiringPiNodeStruct
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{
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int pinBase ;
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int pinMax ;
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int fd ; // Node specific
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unsigned int data0 ; // ditto
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unsigned int data1 ; // ditto
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unsigned int data2 ; // ditto
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unsigned int data3 ; // ditto
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void (*pinMode) (struct wiringPiNodeStruct *node, int pin, int mode) ;
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void (*pullUpDnControl) (struct wiringPiNodeStruct *node, int pin, int mode) ;
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int (*digitalRead) (struct wiringPiNodeStruct *node, int pin) ;
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void (*digitalWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
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void (*pwmWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
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int (*analogRead) (struct wiringPiNodeStruct *node, int pin) ;
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void (*analogWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
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struct wiringPiNodeStruct *next ;
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} ;
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extern struct wiringPiNodeStruct *wiringPiNodes ;
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// Function prototypes
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// c++ wrappers thanks to a comment by Nick Lott
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// (and others on the Raspberry Pi forums)
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Data
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// Internal
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extern int wiringPiFailure (int fatal, const char *message, ...) ;
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// Core wiringPi functions
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extern struct wiringPiNodeStruct *wiringPiFindNode (int pin) ;
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extern struct wiringPiNodeStruct *wiringPiNewNode (int pinBase, int numPins) ;
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extern int wiringPiSetup (void) ;
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extern int wiringPiSetupSys (void) ;
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extern int wiringPiSetupGpio (void) ;
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extern int wiringPiSetupPhys (void) ;
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extern void pinModeAlt (int pin, int mode) ;
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extern void pinMode (int pin, int mode) ;
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extern void pullUpDnControl (int pin, int pud) ;
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extern int digitalRead (int pin) ;
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extern void digitalWrite (int pin, int value) ;
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extern void pwmWrite (int pin, int value) ;
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extern int analogRead (int pin) ;
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extern void analogWrite (int pin, int value) ;
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// PiFace specifics
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// (Deprecated)
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extern int wiringPiSetupPiFace (void) ;
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extern int wiringPiSetupPiFaceForGpioProg (void) ; // Don't use this - for gpio program only
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// On-Board Raspberry Pi hardware specific stuff
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extern int piBoardRev (void) ;
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extern void piBoardId (int *model, int *rev, int *mem, int *maker, int *overVolted) ;
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extern int wpiPinToGpio (int wpiPin) ;
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extern int physPinToGpio (int physPin) ;
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extern void setPadDrive (int group, int value) ;
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extern int getAlt (int pin) ;
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extern void pwmToneWrite (int pin, int freq) ;
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extern void digitalWriteByte (int value) ;
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extern void pwmSetMode (int mode) ;
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extern void pwmSetRange (unsigned int range) ;
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extern void pwmSetClock (int divisor) ;
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extern void gpioClockSet (int pin, int freq) ;
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// Interrupts
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// (Also Pi hardware specific)
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extern int waitForInterrupt (int pin, int mS) ;
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extern int wiringPiISR (int pin, int mode, void (*function)(void)) ;
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// Threads
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extern int piThreadCreate (void *(*fn)(void *)) ;
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extern void piLock (int key) ;
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extern void piUnlock (int key) ;
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// Schedulling priority
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extern int piHiPri (const int pri) ;
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// Extras from arduino land
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extern void delay (unsigned int howLong) ;
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extern void delayMicroseconds (unsigned int howLong) ;
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extern unsigned int millis (void) ;
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extern unsigned int micros (void) ;
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#ifdef __cplusplus
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}
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#endif
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#endif
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