81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#ifndef _GCODE_H
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#define _GCODE_H
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#include <stdint.h>
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#include "dda.h"
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// wether the asterisk (checksum-command) is included for checksum calculation
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// undefined for RepRap host software
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//#define ASTERISK_IN_CHECKSUM_INCLUDED
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// wether to insist on N line numbers
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// if not defined, N's are completely ignored
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//#define REQUIRE_LINENUMBER
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// wether to insist on a checksum
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//#define REQUIRE_CHECKSUM
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// this is a very crude decimal-based floating point structure. a real floating point would at least have signed exponent
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typedef struct {
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uint32_t sign :1;
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uint32_t mantissa :24;
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uint32_t exponent :7;
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} decfloat;
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// this holds all the possible data from a received command
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typedef struct {
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uint8_t seen_G :1;
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uint8_t seen_M :1;
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uint8_t seen_X :1;
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uint8_t seen_Y :1;
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uint8_t seen_Z :1;
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uint8_t seen_E :1;
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uint8_t seen_F :1;
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uint8_t seen_S :1;
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uint8_t seen_P :1;
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uint8_t seen_N :1;
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uint8_t seen_checksum :1;
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uint8_t seen_semi_comment :1;
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uint8_t seen_parens_comment :1;
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uint8_t option_relative :1;
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uint8_t option_inches :1;
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uint8_t G;
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uint8_t M;
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TARGET target;
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int16_t S;
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uint16_t P;
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uint32_t N;
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uint32_t N_expected;
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uint8_t checksum_read;
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uint8_t checksum_calculated;
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} GCODE_COMMAND;
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// the command being processed
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extern GCODE_COMMAND next_target;
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// utility functions
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int32_t decfloat_to_int(decfloat *df, int32_t multiplicand, int32_t denominator);
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// this is where we construct a move without a gcode command, useful for gcodes which require multiple moves eg; homing
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void SpecialMoveXY(int32_t x, int32_t y, uint32_t f);
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void SpecialMoveZ(int32_t z, uint32_t f);
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void SpecialMoveE(int32_t e, uint32_t f);
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// accept the next character and process it
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void scan_char(uint8_t c);
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// when we have a whole line, feed it to this
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void process_gcode_command(GCODE_COMMAND *gcmd);
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// uses the global variable next_target.N
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void request_resend(void);
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#endif /* _GCODE_H */
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