C:/usr/src/avr/plotter/line.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <avr/pgmspace.h>
#include "motori.h"
#include "shvars.h"

Go to the source code of this file.

Defines
#define	SWAP(a, b)   {(a)^=(b);(b)^=(a);(a)^=(b);}
Functions
void	move_reset ()
uint8_t	motors_ready ()
uint8_t	move_is_steep ()
int16_t	movestep (int16_t x1, int16_t y1)

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Define Documentation

#define SWAP	(	a,
		b		)	{(a)^=(b);(b)^=(a);(a)^=(b);}

Definition at line 24 of file line.c.

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Function Documentation

uint8_t motors_ready

(

)

Returns:

true if motors are not moving

Definition at line 16 of file line.c.

uint8_t move_is_steep

(

)

Returns:

true if X and Y coordinates are swapped

Definition at line 20 of file line.c.

void move_reset

(

)

Definition at line 12 of file line.c.

int16_t movestep	(	int16_t	x1,
		int16_t	y1
	)

Initialize a line, or perform a subsequent line step.

If motors_ready(), initiate a new line from the current location (stepper_loc) to specified (x1,y1). Subsequent steps should make calls with (-1,-1) arguments. Each line step will will call back external function step(x,y), until movement is done.

The movement is calculated using adopted Bresenham's algorithm.

Returns:

amount of steps after the first call

ordinal number of the current step during movement

See also:

step(x,y) (motori.h)

Definition at line 26 of file line.c.