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WiringPi
의 미러 https://github.com/WiringPi/WiringPi.git
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WiringPi/wiringPi/wiringPi.h

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  1. /*

  2.  * wiringPi.h:

  3.  *	Arduino like Wiring library for the Raspberry Pi.

  4.  *	Copyright (c) 2012-2017 Gordon Henderson

  5.  ***********************************************************************

  6.  * This file is part of wiringPi:

  7.  *	https://projects.drogon.net/raspberry-pi/wiringpi/

  8.  *

  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.

  13.  *

  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.

  18.  *

  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.  ***********************************************************************

  22.  */

  23. 

  24. #ifndef	__WIRING_PI_H__

  25. #define	__WIRING_PI_H__

  26. 

  27. #include <stdio.h>

  28. #include <stdarg.h>

  29. #include <stdint.h>

  30. #include <stdlib.h>

  31. 

  32. 

  33. #ifndef	TRUE

  34. #  define	TRUE	(1==1)

  35. #  define	FALSE	(!TRUE)

  36. #endif

  37. 

  38. #define PIN_NUM_CALC_SYSFD(x) (x>225 ? x - libwiring.pinBase : x)

  39. 

  40. // GCC warning suppressor

  41. #define	UNU	__attribute__((unused))

  42. 

  43. #define ENV_DEBUG	"WIRINGPI_DEBUG"

  44. #define ENV_CODES   "WIRINGPI_CODES"

  45. #define ENV_GPIOMEM	"WIRINGPI_GPIOMEM"

  46. 

  47. #define MODEL_UNKNOWN		0

  48. #define MODEL_KHADAS_VIM1	1

  49. #define MODEL_KHADAS_VIM2	2

  50. #define MODEL_KHADAS_VIM3	3

  51. #define	MODEL_KHADAS_EDGE	4

  52. 

  53. #define MAKER_UNKNOWN		0

  54. #define MAKER_AMLOGIC		1

  55. #define MAKER_ROCKCHIP		2

  56. 

  57. // wiringPi modes

  58. 

  59. #define	MODE_PINS		  	 0

  60. #define	MODE_GPIO		 	 1

  61. #define	MODE_GPIO_SYS	  	 2

  62. #define	MODE_PHYS			 3

  63. #define MODE_PIFACE			 4

  64. #define	MODE_UNINITIALISED	-1

  65. 

  66. // Pin modes

  67. 

  68. #define	INPUT			 0

  69. #define	OUTPUT			 1

  70. #define	PWM_OUTPUT		 2

  71. #define	GPIO_CLOCK		 3

  72. #define	SOFT_PWM_OUTPUT		 4

  73. #define	SOFT_TONE_OUTPUT	 5

  74. #define	PWM_TONE_OUTPUT		 6

  75. 

  76. #define	LOW			 0

  77. #define	HIGH			 1

  78. 

  79. // Pull up/down/none

  80. 

  81. #define	PUD_OFF			 0

  82. #define	PUD_DOWN		 1

  83. #define	PUD_UP			 2

  84. 

  85. // PWM

  86. 

  87. #define	PWM_MODE_MS		0

  88. #define	PWM_MODE_BAL		1

  89. 

  90. // Interrupt levels

  91. 

  92. #define	INT_EDGE_SETUP		0

  93. #define	INT_EDGE_FALLING	1

  94. #define	INT_EDGE_RISING		2

  95. #define	INT_EDGE_BOTH		3

  96. 

  97. //Module names

  98. #define AML_MODULE_I2C		"aml_i2c"

  99. 

  100. extern const char *piModelNames    [16] ;

  101. extern const char *piRevisionNames [16] ;

  102. extern const char *piMakerNames    [16] ;

  103. extern const int   piMemorySize    [ 8] ;

  104. 

  105. 

  106. //	Intended for the GPIO program Use at your own risk.

  107. 

  108. // Threads

  109. 

  110. #define	PI_THREAD(X)	void *X (UNU void *dummy)

  111. 

  112. // Failure modes

  113. 

  114. #define	WPI_FATAL	(1==1)

  115. #define	WPI_ALMOST	(1==2)

  116. 

  117. #if !defined(ANDROID)

  118. #define PAGE_SIZE	(4*1024)

  119. #endif

  120. #define BLOCK_SIZE	(4*1024)

  121. 

  122. #define MSG_ERR 	-1

  123. #define MSG_WARN	-2

  124. 

  125. struct libkhadas

  126. {

  127. 	/* H/W model info */

  128. 	int model, rev, mem, maker;

  129. 

  130. 	/* wiringPi init mode */

  131. 	int mode;

  132. 

  133. 	/* wiringPi core func */

  134. 	int (*getModeToGpio)    (int mode, int pin);

  135. 	void    (*setPadDrive)      (int pin, int value);

  136. 	int (*getPadDrive)      (int pin);

  137. 	void    (*pinMode)      (int pin, int mode);

  138. 	int (*getAlt)       (int pin);

  139. 	int (*getPUPD)      (int pin);

  140. 	void    (*pullUpDnControl)  (int pin, int pud);

  141. 	int (*digitalRead)      (int pin);

  142. 	void    (*digitalWrite)     (int pin, int value);

  143. 	int (*analogRead)       (int pin);

  144. 	void    (*digitalWriteByte) (const int value);

  145. 	unsigned int (*digitalReadByte) (void);

  146. 

  147. 	/* ISR Function pointer */

  148. 	void    (*isrFunctions[256])(void);

  149. 

  150. 	/* GPIO sysfs file discripter */

  151. 	int     sysFds[256];

  152. 

  153. 	/* GPIO pin base number */

  154. 	int pinBase;

  155. 

  156. 	// Time for easy calculations

  157. 	uint64_t epochMilli, epochMicro ;

  158. };

  159. 

  160. 

  161. union reg_bitfield {

  162. 	unsigned int wvalue;

  163. 	struct {

  164. 		unsigned int 	bit0  : 1;

  165. 		unsigned int 	bit1  : 1;

  166. 		unsigned int 	bit2  : 1;

  167. 		unsigned int 	bit3  : 1;

  168. 		unsigned int 	bit4  : 1;

  169. 		unsigned int 	bit5  : 1;

  170. 		unsigned int 	bit6  : 1;

  171. 		unsigned int 	bit7  : 1;

  172. 		unsigned int 	bit8  : 1;

  173. 		unsigned int 	bit9  : 1;

  174. 		unsigned int 	bit10 : 1;

  175. 		unsigned int 	bit11 : 1;

  176. 		unsigned int 	bit12 : 1;

  177. 		unsigned int 	bit13 : 1;

  178. 		unsigned int 	bit14 : 1;

  179. 		unsigned int 	bit15 : 1;

  180. 		unsigned int 	bit16 : 1;

  181. 		unsigned int 	bit17 : 1;

  182. 		unsigned int 	bit18 : 1;

  183. 		unsigned int 	bit19 : 1;

  184. 		unsigned int 	bit20 : 1;

  185. 		unsigned int 	bit21 : 1;

  186. 		unsigned int 	bit22 : 1;

  187. 		unsigned int 	bit23 : 1;

  188. 		unsigned int 	bit24 : 1;

  189. 		unsigned int 	bit25 : 1;

  190. 		unsigned int 	bit26 : 1;

  191. 		unsigned int 	bit27 : 1;

  192. 		unsigned int 	bit28 : 1;

  193. 		unsigned int 	bit29 : 1;

  194. 		unsigned int 	bit30 : 1;

  195. 		unsigned int 	bit31 : 1;

  196. 

  197. 	} bits;

  198. };

  199. 

  200. 

  201. // wiringPiNodeStruct:

  202. //	This describes additional device nodes in the extended wiringPi

  203. //	2.0 scheme of things.

  204. //	It's a simple linked list for now, but will hopefully migrate to 

  205. //	a binary tree for efficiency reasons - but then again, the chances

  206. //	of more than 1 or 2 devices being added are fairly slim, so who

  207. //	knows....

  208. 

  209. struct wiringPiNodeStruct

  210. {

  211.   int     pinBase ;

  212.   int     pinMax ;

  213. 

  214.   int          fd ;	// Node specific

  215.   unsigned int data0 ;	//  ditto

  216.   unsigned int data1 ;	//  ditto

  217.   unsigned int data2 ;	//  ditto

  218.   unsigned int data3 ;	//  ditto

  219. 

  220.            void   (*pinMode)          (struct wiringPiNodeStruct *node, int pin, int mode) ;

  221.            void   (*pullUpDnControl)  (struct wiringPiNodeStruct *node, int pin, int mode) ;

  222.            int    (*digitalRead)      (struct wiringPiNodeStruct *node, int pin) ;

  223. //unsigned int    (*digitalRead8)     (struct wiringPiNodeStruct *node, int pin) ;

  224.            void   (*digitalWrite)     (struct wiringPiNodeStruct *node, int pin, int value) ;

  225. //         void   (*digitalWrite8)    (struct wiringPiNodeStruct *node, int pin, int value) ;

  226.            void   (*pwmWrite)         (struct wiringPiNodeStruct *node, int pin, int value) ;

  227.            int    (*analogRead)       (struct wiringPiNodeStruct *node, int pin) ;

  228.            void   (*analogWrite)      (struct wiringPiNodeStruct *node, int pin, int value) ;

  229. 

  230.   struct wiringPiNodeStruct *next ;

  231. } ;

  232. 

  233. extern struct wiringPiNodeStruct *wiringPiNodes ;

  234. 

  235. // Export variables for the hardware pointers

  236. 

  237. //extern volatile unsigned int *_wiringPiGpio ;

  238. //extern volatile unsigned int *_wiringPiPwm ;

  239. //extern volatile unsigned int *_wiringPiClk ;

  240. //extern volatile unsigned int *_wiringPiPads ;

  241. //extern volatile unsigned int *_wiringPiTimer ;

  242. //extern volatile unsigned int *_wiringPiTimerIrqRaw ;

  243. 

  244. 

  245. // Function prototypes

  246. //	c++ wrappers thanks to a comment by Nick Lott

  247. //	(and others on the Raspberry Pi forums)

  248. 

  249. #ifdef __cplusplus

  250. extern "C" {

  251. #endif

  252. 

  253. // Data

  254. 

  255. // Internal WiringPi functions

  256. 

  257. extern int wiringPiFailure (int fatal, const char *message, ...) ;

  258. extern int msg (int type, const char *message, ...);

  259. extern int moduleLoaded (char *);

  260. 

  261. // Core wiringPi functions

  262. 

  263. extern struct wiringPiNodeStruct *wiringPiFindNode (int pin) ;

  264. extern struct wiringPiNodeStruct *wiringPiNewNode  (int pinBase, int numPins) ;

  265. 

  266. extern void wiringPiVersion	(int *major, int *minor) ;

  267. extern int  wiringPiSetup       (void) ;

  268. extern int  wiringPiSetupSys    (void) ;

  269. extern int  wiringPiSetupGpio   (void) ;

  270. extern int  wiringPiSetupPhys   (void) ;

  271. 

  272. extern 			int	 getModeToGpio		(int wpiPin);

  273. extern 			void setPadDrive		(int pin, int value);

  274. extern 			int  getPadDrive		(int pin);

  275. extern			int  getAlt				(int pin);

  276. extern			int  getPUPD			(int pin);

  277. extern 			void pinMode			(int pin,int mode);

  278. extern 			void pullUpDnControl	(int pin, int pud);

  279. extern 			int  digitalRead		(int pin);

  280. extern 			void digitalWrite		(int pin, int value);

  281. extern unsigned int  digitalReadByte	(void);

  282. extern			void digitalWriteByte	(const int vaule);

  283. extern			void pwmWrite			(int pin, int value);

  284. extern 			int  analogRead			(int pin);

  285. 

  286. //Hardware Specific stuffs

  287. extern			int  piGpioLayout		(void);

  288. extern 			int  piBoardRev			(void);

  289. extern 			void piBoardId			(int *model, int *rev, int *mem, int *maker, int *warranty);

  290. extern 			int  wpiPinToGpio 		(int wpiPin);

  291. extern 			int  physPinToGpio		(int physPin);

  292. 

  293. //Unsupported

  294. extern 			void pinModeAlt			(int pin, int mode);

  295. extern 			void analogWrite		(int pin, int value);

  296. extern 			void pwmToneWrite		(int pin, int freq);

  297. extern			void pwmSetMode			(int mode);

  298. extern 			void pwmSetRange		(unsigned int range);

  299. extern			void pwmSetClock		(int divisor);

  300. extern			void gpioClockSet		(int pin, int freq);

  301. extern unsigned int  digitalReadByte	(void);

  302. extern unsigned int  digitalReadByte2	(void);

  303. extern			void digitalWriteByte	(int value);

  304. extern 			void digitalWriteByte2	(int value);

  305. 

  306. //Interrupt

  307. extern			int  waitForInterrupt	(int pin, int mS);

  308. extern			int  wiringPiISR		(int pin, int mode, void (*function)(void));

  309. 

  310. //Threads

  311. extern			int  piThreadCreate		(void *(*fn)(void *));

  312. extern			void piLock				(int key);

  313. extern			void piUnlock			(int key);

  314. 

  315. //Schedulling priority

  316. extern		int  piHiPri		(const int pri);

  317. 

  318. //From Arduino land

  319. extern			void delay				(unsigned int howLang);

  320. extern			void delayMicroseconds	(unsigned int howLang);

  321. extern unsigned int  millis				(void);

  322. extern unsigned int  micros				(void);

  323. 

  324. #ifdef __cplusplus

  325. }

  326. #endif

  327. 

  328. #endif  /* __WIRING_H__ */