/* $Id: WConstants.h 1156 2011-06-07 04:01:16Z bhagman $
||
|| @author         Hernando Barragan <b@wiring.org.co>
|| @url            http://wiring.org.co/
|| @contribution   Brett Hagman <bhagman@wiring.org.co>
|| @contribution   Alexander Brevig <abrevig@wiring.org.co>
||
|| @description
|| | Main constant and macro definitions for Wiring.
|| |
|| | Wiring Common API
|| #
||
|| @license Please see cores/Common/License.txt.
||
*/

#pragma once

#include <cstdint>

// Wiring API version for libraries
// this is passed in at compile-time
#ifndef WIRING
#define WIRING 101
#endif

// passed in at compile-time
#ifndef F_CPU
#define F_CPU 80000000L
#endif

/*************************************************************
 * Constants
 *************************************************************/

#define LOW 0x0
#define HIGH 0x1
//#define HIGH     0xFF

//GPIO FUNCTIONS
#define INPUT 0x00
#define INPUT_PULLUP 0x02
#define INPUT_PULLDOWN_16 0x04 // PULLDOWN only possible for pin16 on ESP8266
#define INPUT_PULLDOWN 0x04
#define OUTPUT 0x01
#define OUTPUT_OPEN_DRAIN 0x03
#define WAKEUP_PULLUP 0x05
#define WAKEUP_PULLDOWN 0x07
#define SPECIAL 0xF8 //defaults to the usable BUSes uart0rx/tx uart1tx and hspi
#define FUNCTION_0 0x08
#define FUNCTION_1 0x18
#define FUNCTION_2 0x28
#define FUNCTION_3 0x38
#define FUNCTION_4 0x48
#define ANALOG 0xc0

#define CHANGE 32 // to avoid conflict with HIGH value
#define FALLING 2
#define RISING 3

#define LSBFIRST 0x0
#define MSBFIRST 0x1

#define null NULL

#define DEC 10
#define HEX 16
#define OCT 8
#define BIN 2

#define PI (3.1415926535897932384626433832795)
#define TWO_PI (6.283185307179586476925286766559)
#define HALF_PI (1.5707963267948966192313216916398)
#define EPSILON (0.0001)
#define DEG_TO_RAD (0.017453292519943295769236907684886)
#define RAD_TO_DEG (57.295779513082320876798154814105)

/*************************************************************
 * Digital Constants
 *************************************************************/

#define PORT0 0
#define PORT1 1
#define PORT2 2
#define PORT3 3
#define PORT4 4
#define PORT5 5
#define PORT6 6
#define PORT7 7
#define PORT8 8
#define PORT9 9

/*************************************************************
 * Useful macros
 *************************************************************/

#define word(...) makeWord(__VA_ARGS__)

#define sq(x) ((x) * (x))
#define radians(deg) ((deg)*DEG_TO_RAD)
#define degrees(rad) ((rad)*RAD_TO_DEG)
#define constrain(amt, low, high) ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))

#define lowByte(x) ((uint8_t)((x)&0x00ff))
#define highByte(x) ((uint8_t)((x) >> 8))

#define clockCyclesPerMicrosecond() (F_CPU / 1000000L)
#define clockCyclesToMicroseconds(a) ((a) / clockCyclesPerMicrosecond())
#define microsecondsToClockCycles(a) ((a)*clockCyclesPerMicrosecond())

/*************************************************************
 * Typedefs
 *************************************************************/

using word = unsigned int;
using byte = uint8_t;
using boolean = uint8_t;
using voidFuncPtr = void (*)(void);