3 * Arduino compatable (ish) Wiring library for the Raspberry Pi
4 * Copyright (c) 2012 Gordon Henderson
5 ***********************************************************************
6 * This file is part of wiringPi:
7 * https://projects.drogon.net/raspberry-pi/wiringpi/
9 * wiringPi is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * wiringPi is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
21 ***********************************************************************
24 #ifndef __WIRING_PI_H__
25 #define __WIRING_PI_H__
32 #define WPI_MODE_PINS 0
33 #define WPI_MODE_GPIO 1
34 #define WPI_MODE_GPIO_SYS 2
35 #define WPI_MODE_PHYS 3
36 #define WPI_MODE_PIFACE 4
37 #define WPI_MODE_UNINITIALISED -1
45 #define SOFT_PWM_OUTPUT 4
46 #define SOFT_TONE_OUTPUT 5
47 #define PWM_TONE_OUTPUT 6
61 #define PWM_MODE_BAL 1
65 #define INT_EDGE_SETUP 0
66 #define INT_EDGE_FALLING 1
67 #define INT_EDGE_RISING 2
68 #define INT_EDGE_BOTH 3
74 #define PI_MODEL_BPLUS 2
80 #define PI_THREAD(X) void *X (void *dummy)
84 #define WPI_FATAL (1==1)
85 #define WPI_ALMOST (1==2)
88 // wiringPiNodeStruct:
89 // This describes additional device nodes in the extended wiringPi
90 // 2.0 scheme of things.
91 // It's a simple linked list for now, but will hopefully migrate to
92 // a binary tree for efficiency reasons - but then again, the chances
93 // of more than 1 or 2 devices being added are fairly slim, so who
96 struct wiringPiNodeStruct
101 int fd ; // Node specific
102 unsigned int data0 ; // ditto
103 unsigned int data1 ; // ditto
104 unsigned int data2 ; // ditto
105 unsigned int data3 ; // ditto
107 void (*pinMode) (struct wiringPiNodeStruct *node, int pin, int mode) ;
108 void (*pullUpDnControl) (struct wiringPiNodeStruct *node, int pin, int mode) ;
109 int (*digitalRead) (struct wiringPiNodeStruct *node, int pin) ;
110 void (*digitalWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
111 void (*pwmWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
112 int (*analogRead) (struct wiringPiNodeStruct *node, int pin) ;
113 void (*analogWrite) (struct wiringPiNodeStruct *node, int pin, int value) ;
115 struct wiringPiNodeStruct *next ;
118 extern struct wiringPiNodeStruct *wiringPiNodes ;
121 // Function prototypes
122 // c++ wrappers thanks to a comment by Nick Lott
123 // (and others on the Raspberry Pi forums)
131 extern const char *piModelNames [] ;
132 extern const char *piRevisionNames[] ;
136 extern int wiringPiFailure (int fatal, const char *message, ...) ;
138 // Core wiringPi functions
140 extern struct wiringPiNodeStruct *wiringPiFindNode (int pin) ;
141 extern struct wiringPiNodeStruct *wiringPiNewNode (int pinBase, int numPins) ;
143 extern int wiringPiSetup (void) ;
144 extern int wiringPiSetupSys (void) ;
145 extern int wiringPiSetupGpio (void) ;
146 extern int wiringPiSetupPhys (void) ;
148 extern void pinModeAlt (int pin, int mode) ;
149 extern void pinMode (int pin, int mode) ;
150 extern void pullUpDnControl (int pin, int pud) ;
151 extern int digitalRead (int pin) ;
152 extern void digitalWrite (int pin, int value) ;
153 extern void pwmWrite (int pin, int value) ;
154 extern int analogRead (int pin) ;
155 extern void analogWrite (int pin, int value) ;
160 extern int wiringPiSetupPiFace (void) ;
161 extern int wiringPiSetupPiFaceForGpioProg (void) ; // Don't use this - for gpio program only
163 // On-Board Raspberry Pi hardware specific stuff
165 extern int piBoardRev (void) ;
166 extern void piBoardId (int *model, int *rev, int *mem, char **maker) ;
167 extern int wpiPinToGpio (int wpiPin) ;
168 extern int physPinToGpio (int physPin) ;
169 extern void setPadDrive (int group, int value) ;
170 extern int getAlt (int pin) ;
171 extern void pwmToneWrite (int pin, int freq) ;
172 extern void digitalWriteByte (int value) ;
173 extern void pwmSetMode (int mode) ;
174 extern void pwmSetRange (unsigned int range) ;
175 extern void pwmSetClock (int divisor) ;
176 extern void gpioClockSet (int pin, int freq) ;
179 // (Also Pi hardware specific)
181 extern int waitForInterrupt (int pin, int mS) ;
182 extern int wiringPiISR (int pin, int mode, void (*function)(void)) ;
186 extern int piThreadCreate (void *(*fn)(void *)) ;
187 extern void piLock (int key) ;
188 extern void piUnlock (int key) ;
190 // Schedulling priority
192 extern int piHiPri (const int pri) ;
194 // Extras from arduino land
196 extern void delay (unsigned int howLong) ;
197 extern void delayMicroseconds (unsigned int howLong) ;
198 extern unsigned int millis (void) ;
199 extern unsigned int micros (void) ;