Arduino.h

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#ifndef Arduino_h
#define Arduino_h

#include <stdint.h>
#include <stdbool.h>

// picorv32: work-a-round; for size_t only - original Arduino.h does NOT have this!
#include <cstddef>

/*#ifdef __cplusplus
extern "C"{
#endif

void yield(void);*/

#define reg_spictrl (*(volatile uint32_t*)0x02000000)
#define reg_uart_clkdiv (*(volatile uint32_t*)0x02000004)
#define reg_uart_data (*(volatile uint32_t*)0x02000008)
#define reg_outp (*(volatile uint32_t*)0x03000000)  // contains reg_leds also
//#define reg_inp_zero (*(volatile uint32_t*)0x04000000)
#define reg_inp (*(volatile uint32_t*)0x05000000)
//#define reg_outp2 (*(volatile uint32_t*)0x06000000)  // more output...

#define F_CPU       12000000    // 12MHz

#define clk_div_s   (F_CPU)          // 1s
#define clk_div_ms  (F_CPU/1000)     // 1ms
#define clk_div_us  (F_CPU/1000000)  // 1us

#define HIGH 0x1
#define LOW  0x0

#define INPUT 0x0
#define OUTPUT 0x1
#define INPUT_PULLUP 0x2

#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

#define LSBFIRST 0
#define MSBFIRST 1

#define CHANGE 1
#define FALLING 2
#define RISING 3

#if defined(__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
  #define DEFAULT 0
  #define EXTERNAL 1
  #define INTERNAL1V1 2
  #define INTERNAL INTERNAL1V1
#elif defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
  #define DEFAULT 0
  #define EXTERNAL 4
  #define INTERNAL1V1 8
  #define INTERNAL INTERNAL1V1
  #define INTERNAL2V56 9
  #define INTERNAL2V56_EXTCAP 13
#else
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1284__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega644__) || defined(__AVR_ATmega644A__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__)
#define INTERNAL1V1 2
#define INTERNAL2V56 3
#else
#define INTERNAL 3
#endif
#define DEFAULT 1
#define EXTERNAL 0
#endif

// undefine stdlib's abs if encountered
#ifdef abs
#undef abs
#endif*/

#define min(a,b) ((a)<(b)?(a):(b))
#define max(a,b) ((a)>(b)?(a):(b))
#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() sei()
#define noInterrupts() cli()*/

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

#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))

// avr-libc defines _NOP() since 1.6.2
#ifndef _NOP
#define _NOP() do { __asm__ volatile ("nop"); } while (0)
#endif

typedef unsigned int word;

#define bit(b) (1UL << (b))

typedef bool boolean;
typedef uint8_t byte;

void init(void);
void initVariant(void);

int atexit(void (*func)()) __attribute__((weak));*/

typedef uint8_t byte;

void pinMode(uint8_t, uint8_t);
void digitalWrite(uint8_t, uint8_t);
int digitalRead(uint8_t);
int analogRead(uint8_t);
//void analogReference(uint8_t mode);
void analogWrite(uint8_t, int);

unsigned long millis(void);
unsigned long micros(void);
void delay(unsigned long);
/*inline void delayMicroseconds(unsigned int us)  // picorv32 work-a-round; inline for speedup, still slow
{
    // delays below 66 and 113 microseconds are not possible and the resolution
    // is about 16-21 microseconds. the type and value of us passed may add cycles too.
#if F_CPU >= 12000000L
    // numbers here are empiric estimates
    if (us<=92) return;
    us /= 16;
    us -=  4;  // important to have us >= 1 for next step (asm loop)
    // busy wait (1x is 256 cycles, every further iteration is +197 cycles -> steps of ~16-21 us)
    __asm__ __volatile__ (
      "1: addi %0,%0,-1" "\n\t" // ? cycles
      "bnez %0,1b" : "=r" (us) : "r" (us) // ? cycles
    );

#else
    #warning "delayMicroseconds supports 12MHz clock only"


#endif

    // busy wait
    // ...
    return;
}*/
/*unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout);
unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout);

void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, uint8_t val);
uint8_t shiftIn(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder);

void attachInterrupt(uint8_t, void (*)(void), int mode);
void detachInterrupt(uint8_t);*/

//#define ASSERT_NOT_IMPLEMENTED  // picorv32 work-a-round
//#define HALT_ON_ASSERT          // picorv32 work-a-round - strict; not compatible with some examples
#if defined(ASSERT_NOT_IMPLEMENTED)
#warning ASSERT_NOT_IMPLEMENTED enabled. Check serial output for assertions. Baudrate is the one choosen or 115200 per default.
void assert(const bool, const char *);  // picorv32 work-a-round
#endif

void setup(void);
void loop(void);

/*// Get the bit location within the hardware port of the given virtual pin.
// This comes from the pins_*.c file for the active board configuration.

#define analogInPinToBit(P) (P)

// On the ATmega1280, the addresses of some of the port registers are
// greater than 255, so we can't store them in uint8_t's.
extern const uint16_t PROGMEM port_to_mode_PGM[];
extern const uint16_t PROGMEM port_to_input_PGM[];
extern const uint16_t PROGMEM port_to_output_PGM[];

extern const uint8_t PROGMEM digital_pin_to_port_PGM[];
// extern const uint8_t PROGMEM digital_pin_to_bit_PGM[];
extern const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[];
extern const uint8_t PROGMEM digital_pin_to_timer_PGM[];

// Get the bit location within the hardware port of the given virtual pin.
// This comes from the pins_*.c file for the active board configuration.
//
// These perform slightly better as macros compared to inline functions
//
#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
#define digitalPinToBitMask(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM + (P) ) )
#define digitalPinToTimer(P) ( pgm_read_byte( digital_pin_to_timer_PGM + (P) ) )
#define analogInPinToBit(P) (P)
#define portOutputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_output_PGM + (P))) )
#define portInputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_input_PGM + (P))) )
#define portModeRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_mode_PGM + (P))) )

#define NOT_A_PIN 0
#define NOT_A_PORT 0

#define NOT_AN_INTERRUPT -1

#ifdef ARDUINO_MAIN
#define PA 1
#define PB 2
#define PC 3
#define PD 4
#define PE 5
#define PF 6
#define PG 7
#define PH 8
#define PJ 10
#define PK 11
#define PL 12
#endif

#define NOT_ON_TIMER 0
#define TIMER0A 1
#define TIMER0B 2
#define TIMER1A 3
#define TIMER1B 4
#define TIMER1C 5
#define TIMER2  6
#define TIMER2A 7
#define TIMER2B 8

#define TIMER3A 9
#define TIMER3B 10
#define TIMER3C 11
#define TIMER4A 12
#define TIMER4B 13
#define TIMER4C 14
#define TIMER4D 15
#define TIMER5A 16
#define TIMER5B 17
#define TIMER5C 18

#ifdef __cplusplus
} // extern "C"
#endif*/

#ifdef __cplusplus
//#include "WCharacter.h"
//#include "WString.h"
#include "HardwareSerial.h"
//#include "USBAPI.h"
#if defined(HAVE_HWSERIAL0) && defined(HAVE_CDCSERIAL)
#error "Targets with both UART0 and CDC serial not supported"
#endif

/*uint16_t makeWord(uint16_t w);
uint16_t makeWord(byte h, byte l);

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

unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);

void tone(uint8_t _pin, unsigned int frequency, unsigned long duration = 0);
void noTone(uint8_t _pin);

// WMath prototypes
long random(long);
long random(long, long);
void randomSeed(unsigned long);*/
long map(long, long, long, long, long);

#endif

#include "pins_arduino.h"

#endif