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Merge pull request #44 from ramiropolla/steppers

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steppers: add absolute position
This commit is contained in:
Miodrag Milanović 2014-11-10 08:26:46 +01:00
commit 970fc85e7a
2 changed files with 13 additions and 0 deletions
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11
src/mame/machine/steppers.c
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@ -58,6 +58,7 @@ struct stepper
type; /* reel type */
INT16 step_pos, /* step position 0 - max_steps */
max_steps; /* maximum step position */
INT32 abs_step_pos; /* absolute step position */
INT16 index_start, /* start position of index (in half steps) */
index_end, /* end position of index (in half steps) */
@ -125,6 +126,7 @@ void stepper_config(running_machine &machine, int which, const stepper_interface
step[which].pattern = 0;
step[which].old_pattern = 0;
step[which].step_pos = 0;
step[which].abs_step_pos= 0;
step[which].phase = step[which].initphase;
step[which].old_phase = step[which].initphase;
@ -161,6 +163,7 @@ void stepper_config(running_machine &machine, int which, const stepper_interface
state_save_register_item(machine, "stepper", NULL, which, step[which].pattern);
state_save_register_item(machine, "stepper", NULL, which, step[which].old_pattern);
state_save_register_item(machine, "stepper", NULL, which, step[which].step_pos);
state_save_register_item(machine, "stepper", NULL, which, step[which].abs_step_pos);
state_save_register_item(machine, "stepper", NULL, which, step[which].max_steps);
state_save_register_item(machine, "stepper", NULL, which, step[which].type);
}
@ -171,6 +174,12 @@ int stepper_get_position(int which)
return step[which].step_pos;
}
///////////////////////////////////////////////////////////////////////////
int stepper_get_absolute_position(int which)
{
return step[which].abs_step_pos;
}
///////////////////////////////////////////////////////////////////////////
int stepper_get_max(int which)
@ -216,6 +225,7 @@ static void update_optic(int which)
void stepper_reset_position(int which)
{
step[which].step_pos = 0x00;
step[which].abs_step_pos= 0x00;
step[which].pattern = 0x00;
step[which].old_pattern = 0x00;
step[which].phase = step[which].initphase;
@ -551,6 +561,7 @@ int stepper_update(int which, UINT8 pattern)
if (max!=0)
{
step[which].abs_step_pos += steps;
pos = (step[which].step_pos + steps + max) % max;
}
else

2
src/mame/machine/steppers.h
View File

@ -59,5 +59,7 @@ int stepper_update(int id, UINT8 pattern); /* update a motor */
int stepper_get_position(int id); /* get current position in half steps */
int stepper_get_absolute_position(int id); /* get current absolute position in half steps */
int stepper_get_max(int id); /* get maximum position in half steps */
#endif