PN532 Driver library This library provides an abstract API to drive the pn532 nfc chip, with I2C/HSU/SPI interface. Its based on the Seeed Studio's Arduino version.
Dependents: PN532_ReadUid Nfctest2
Diff: wiring_constants.h
- Revision:
- 0:db8030e71f55
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wiring_constants.h Tue Sep 13 06:01:19 2016 +0000 @@ -0,0 +1,106 @@ +/* + Copyright (c) 2014 BestU. All right reserved. + Copyright (c) 2011 Arduino. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + See the GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#ifndef _WIRING_CONSTANTS_ +#define _WIRING_CONSTANTS_ + +#ifdef __cplusplus +extern "C"{ +#endif // __cplusplus + +#define HIGH 0x1 +#define LOW 0x0 + +#define INPUT 0x0 +#define OUTPUT 0x1 +#define ALTERNATE 0x2 +#define ANALOG 0x3 + +#define true 0x1 +#define false 0x0 + +#define PI 3.1415926535897932384626433832795 +#define HALF_PI 1.5707963267948966192313216916398 +#define TWO_PI 6.283185307179586476925286766559 +#define DEG_TO_RAD 0.017453292519943295769236907684886 +#define RAD_TO_DEG 57.295779513082320876798154814105 +#define EULER 2.718281828459045235360287471352 + +#define SERIAL 0x0 +#define DISPLAY 0x1 + +enum BitOrder { + LSBFIRST = 0, + MSBFIRST = 1 +}; + +// LOW 0 +// HIGH 1 +#define CHANGE 2 +#define FALLING 3 +#define RISING 4 + +#define DEFAULT 1 +#define EXTERNAL 0 + +// undefine stdlib's abs if encountered +#ifdef abs +#undef abs +#endif // abs + +#ifndef min +#define min(a,b) ((a)<(b)?(a):(b)) +#endif // min + +#ifndef max +#define max(a,b) ((a)>(b)?(a):(b)) +#endif // max + +#define abs(x) ((x)>0?(x):-(x)) +#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt))) +#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5)) +#define radians(deg) ((deg)*DEG_TO_RAD) +#define degrees(rad) ((rad)*RAD_TO_DEG) +#define sq(x) ((x)*(x)) + +#define interrupts() __enable_irq() +#define noInterrupts() __disable_irq() + +#define lowByte(w) ((uint8_t) ((w) & 0xff)) +#define highByte(w) ((uint8_t) ((w) >> 8)) + +#define bitRead(value, bit) (((value) >> (bit)) & 0x01) +#define bitSet(value, bit) ((value) |= (1UL << (bit))) +#define bitClear(value, bit) ((value) &= ~(1UL << (bit))) +#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit)) + +typedef unsigned int word; + +#define bit(b) (1UL << (b)) + +// TODO: to be checked +typedef uint8_t boolean ; +typedef uint8_t byte ; + + +#ifdef __cplusplus +} // extern "C" +#endif // __cplusplus + +#endif /* _WIRING_CONSTANTS_ */