gcode.h

#pragma once

#ifndef GCODE_H
#define GCODE_H
#include <stdint.h>

#define nX 0
#define nY 1
#define nZ 2
#define nE 3
#define nE0 3
#define nE1 4

//#define DEBUG

typedef struct {
  uint32_t	mantissa;		///< the actual digits of our floating point number
  uint8_t	exponent	: 7;	///< scale mantissa by \f$10^{-exponent}\f$
  uint8_t	sign			: 1; ///< positive or negative?
} decfloat;

typedef struct {
  float axis[NUMAXIS];
  float  F;

  //float  f_multiplier;
  uint8_t   e_relative        : 1; ///< bool: e axis relative? Overrides all_relative
} TARGET;
/// this holds all the possible data from a received command
typedef struct {
  uint8_t					seen_G	: 1;
  uint8_t					seen_M	: 1;
  uint8_t					seen_X	: 1;
  uint8_t					seen_Y	: 1;
  uint8_t					seen_Z	: 1;
  uint8_t					seen_E	: 1;
  uint8_t					seen_F	: 1;
  uint8_t					seen_S	: 1;
  uint8_t					seen_P	: 1;
  uint8_t					seen_T	: 1;
  //uint8_t					seen_N	: 1;
#ifdef ARC_SUPPORT
  uint8_t					seen_I	: 1;
  uint8_t					seen_J	: 1;
  uint8_t					seen_R	: 1;
#endif
  //uint8_t					seen_checksum				: 1; ///< seen a checksum?
  //uint8_t					seen_semi_comment		: 1; ///< seen a semicolon?
  //uint8_t					seen_parens_comment	: 1; ///< seen an open parenthesis
  uint8_t         read_string         : 1; ///< Currently reading a string.
  uint8_t					option_all_relative	: 1; ///< relative or absolute coordinates?
  uint8_t					option_e_relative		: 1; ///< same for e axis (M82/M83)

  //uint32_t          N;          ///< line number
  //uint32_t          N_expected; ///< expected line number

  float            S;          ///< S word (various uses)
  uint16_t          P;          ///< P word (various uses)

  uint8_t					G;				///< G command number
  uint16_t					M;				///< M command number
  TARGET						target;		///< target position: X, Y, Z, E and F
#ifdef ARC_SUPPORT
  float  I;
  float  J;
  float  R;
#endif
  uint8_t						T;				///< T word (tool index)

  //uint8_t						checksum_read;				///< checksum in gcode command
  //uint8_t						checksum_calculated;	///< checksum we calculated
} GCODE_COMMAND;


#define g_str_len 2000


extern int32_t linecount, lineprocess;
extern int waitforline, overridetemp;
extern char g_str[g_str_len];
extern bool waitexecute;
extern int tryexecute();
extern int lastB;
extern void str_wait();

extern int g_str_c;
extern bool stopping;
extern void loadmeshleveling();
extern void changefilament(float l);
extern void process_gcode_command();
extern int reset_command();
extern void update_pos(void);

extern uint8_t gcode_parse_char(uint8_t c);
extern void init_gcode();
extern int sdcardok;
#endif