marlin/Marlin/Marlin.h

#ifndef __MARLINH
#define __MARLINH

// Tonokip RepRap firmware rewrite based off of Hydra-mmm firmware.
// Licence: GPL
#define  HardwareSerial_h // trick to disable the standard HWserial
#include <math.h>
#if ARDUINO >= 100
  #include "Arduino.h"
#else
   #include "WProgram.h"
#endif

#include "fastio.h"
#include <avr/pgmspace.h>
#include "Configuration.h"
#include "MarlinSerial.h"

#define  FORCE_INLINE __attribute__((always_inline)) inline
//#define SERIAL_ECHO(x) Serial << "echo: " << x;
//#define SERIAL_ECHOLN(x) Serial << "echo: "<<x<<endl;
//#define SERIAL_ERROR(x) Serial << "Error: " << x;
//#define SERIAL_ERRORLN(x) Serial << "Error: " << x<<endl;
//#define SERIAL_PROTOCOL(x) Serial << x;
//#define SERIAL_PROTOCOLLN(x) Serial << x<<endl;

//this is a unfinsihed attemp to removes a lot of warning messages, see:
// http://www.avrfreaks.net/index.php?name=PNphpBB2&file=printview&t=57011
//typedef char prog_char PROGMEM; 
// //#define PSTR    (s )        ((const PROGMEM char *)(s))
// //# define MYPGM(s) (__extension__({static prog_char __c[] = (s); &__c[0];})) 
// //#define MYPGM(s) ((const prog_char *g PROGMEM=s))
// //#define MYPGM(s) PSTR(s)
#define MYPGM(s)  (__extension__({static char __c[] __attribute__((__progmem__)) = (s); &__c[0];}))  //This is the normal behaviour
//#define MYPGM(s)  (__extension__({static prog_char __c[]  = (s); &__c[0];})) //this does not work but hides the warnings


#define SERIAL_PROTOCOL(x) MSerial.print(x);
#define SERIAL_PROTOCOLPGM(x) serialprintPGM(MYPGM(x));
#define SERIAL_PROTOCOLLN(x) {MSerial.print(x);MSerial.write('\n');}
#define SERIAL_PROTOCOLLNPGM(x) {serialprintPGM(MYPGM(x));MSerial.write('\n');}


const prog_char errormagic[] PROGMEM ="Error:";
const prog_char echomagic[] PROGMEM ="echo:";
#define SERIAL_ERROR_START serialprintPGM(errormagic);
#define SERIAL_ERROR(x) SERIAL_PROTOCOL(x)
#define SERIAL_ERRORPGM(x) SERIAL_PROTOCOLPGM(x)
#define SERIAL_ERRORLN(x) SERIAL_PROTOCOLLN(x)
#define SERIAL_ERRORLNPGM(x) SERIAL_PROTOCOLLNPGM(x)

#define SERIAL_ECHO_START serialprintPGM(echomagic);
#define SERIAL_ECHO(x) SERIAL_PROTOCOL(x)
#define SERIAL_ECHOPGM(x) SERIAL_PROTOCOLPGM(x)
#define SERIAL_ECHOLN(x) SERIAL_PROTOCOLLN(x)
#define SERIAL_ECHOLNPGM(x) SERIAL_PROTOCOLLNPGM(x)

#define SERIAL_ECHOPAIR(name,value) {SERIAL_ECHOPGM(name);SERIAL_ECHO(value);}

// Macro for getting current active extruder
#define ACTIVE_EXTRUDER (active_extruder)

//things to write to serial from Programmemory. saves 400 to 2k of RAM.
#define SerialprintPGM(x) serialprintPGM(MYPGM(x))
FORCE_INLINE void serialprintPGM(const char *str)
{
  char ch=pgm_read_byte(str);
  while(ch)
  {
    MSerial.write(ch);
    ch=pgm_read_byte(++str);
  }
}


void get_command();
void process_commands();

void manage_inactivity(byte debug);

#if X_ENABLE_PIN > -1
  #define  enable_x() WRITE(X_ENABLE_PIN, X_ENABLE_ON)
  #define disable_x() WRITE(X_ENABLE_PIN,!X_ENABLE_ON)
#else
  #define enable_x() ;
  #define disable_x() ;
#endif

#if Y_ENABLE_PIN > -1
  #define  enable_y() WRITE(Y_ENABLE_PIN, Y_ENABLE_ON)
  #define disable_y() WRITE(Y_ENABLE_PIN,!Y_ENABLE_ON)
#else
  #define enable_y() ;
  #define disable_y() ;
#endif

#if Z_ENABLE_PIN > -1
  #define  enable_z() WRITE(Z_ENABLE_PIN, Z_ENABLE_ON)
  #define disable_z() WRITE(Z_ENABLE_PIN,!Z_ENABLE_ON)
#else
  #define enable_z() ;
  #define disable_z() ;
#endif

#if defined(E0_ENABLE_PIN) && (E0_ENABLE_PIN > -1)
  #define enable_e0() WRITE(E0_ENABLE_PIN, E_ENABLE_ON)
  #define disable_e0() WRITE(E0_ENABLE_PIN,!E_ENABLE_ON)
#else
  #define enable_e0()  /* nothing */
  #define disable_e0() /* nothing */
#endif

#if (EXTRUDERS > 1) && defined(E1_ENABLE_PIN) && (E1_ENABLE_PIN > -1)
  #define enable_e1() WRITE(E1_ENABLE_PIN, E_ENABLE_ON)
  #define disable_e1() WRITE(E1_ENABLE_PIN,!E_ENABLE_ON)
#else
  #define enable_e1()  /* nothing */
  #define disable_e1() /* nothing */
#endif

#if (EXTRUDERS > 2) && defined(E2_ENABLE_PIN) && (E2_ENABLE_PIN > -1)
  #define enable_e2() WRITE(E2_ENABLE_PIN, E_ENABLE_ON)
  #define disable_e2() WRITE(E2_ENABLE_PIN,!E_ENABLE_ON)
#else
  #define enable_e2()  /* nothing */
  #define disable_e2() /* nothing */
#endif


enum AxisEnum {X_AXIS=0, Y_AXIS=1, Z_AXIS=2, E_AXIS=3};


void FlushSerialRequestResend();
void ClearToSend();

void get_coordinates();
void prepare_move();
void kill();

void enquecommand(const char *cmd); //put an ascii command at the end of the current buffer.
void prepare_arc_move(char isclockwise);

#ifndef CRITICAL_SECTION_START
  #define CRITICAL_SECTION_START  unsigned char _sreg = SREG; cli();
  #define CRITICAL_SECTION_END    SREG = _sreg;
#endif //CRITICAL_SECTION_START

extern float homing_feedrate[];
extern bool axis_relative_modes[];
extern float current_position[NUM_AXIS] ;
extern float add_homeing[3];

// Handling multiple extruders pins
extern uint8_t active_extruder;

#endif