Tekkotsu Homepage
Demos
Overview
Downloads
Dev. Resources
Reference
Credits

EmergencyStopMC Class Reference

#include <EmergencyStopMC.h>

Inheritance diagram for EmergencyStopMC:

Inheritance graph
[legend]
List of all members.

Detailed Description

overrides all joints with high priority freeze, blinks tail pink/red/blue cycle

Uses MotionCommand::kEmergencyPriority. Monitors the feedback on joints and adjusts joints to react to pressures above a certain threshold. This allows you to mold the body while it's in this mode, while retaining enough stiffness to hold against gravity.

This MotionCommand is intended to always be left running. It polls WorldState::state for a double-tap on the back button, which causes it to set its joint values. to whatever their current state is. LEDs are left blank, except the tail, which is used to indicate that the emergency stop is on.

A second double-tap will cause it to set all joints to 0 weight

The tail LEDs only ever go up to .5, so that if you really care whether the tail light was set by an underlying behavior/motion, you should be able to tell by looking closely (if blue is going from .5 to 1, that's because it's already set)

Definition at line 24 of file EmergencyStopMC.h.

Public Member Functions

 EmergencyStopMC ()
 constructor
virtual ~EmergencyStopMC ()
 destructor
virtual int updateOutputs ()
 checks for feedback or double tap
void setActive (bool a)
 allows you to modify active
bool getActive ()
 returns active
void setStopped (bool p, bool sound=true)
 allows you to modify paused
bool getStopped () const
 returns paused
void setDblTapDuration (unsigned int d)
 sets duration
unsigned int getDblTapDuration () const
 returns duration
void setResetSensitivity (float r)
 takes a value to set pidcutoff
float getResetSensitivity ()
 returns pidcutoff

Protected Member Functions

void freezeJoints ()
 code to execute when locking joints
void releaseJoints ()
 code to execute when releasing joints

Static Protected Member Functions

static bool trigger ()
 true when the trigger condition is active

Protected Attributes

bool paused
 true if the joints are current locked up
bool stilldown
 true if the back button was down on last updateJointCmds
bool active
 true if the EmergencyStopMC is monitoring the back button (if false, won't pause on a double-tap)
unsigned int period
 period of cycles on tail LEDs
unsigned int timeoflastbtn
 time of the last button press
unsigned int timeofthisbtn
 time of the current button press
unsigned int timeoflastfreeze
 the time estop was last turned on
unsigned int timeoflastrelease
 the time estop was last turned off (may be in the future if still fading out control of joints!)
unsigned int duration
 the maximum time (in milliseconds) of consecutive button-down's to count as a double tap
float piddutyavgs [NumPIDJoints]
 a running average of PID feedback ("duty"), so one bad reading doesn't cause a movement, need a consistent pressure
float pidcutoff
 abs pid duty cycle above which we just reset joint to current
LedEngine ledengine
 used to do LED effects on the tail

Static Protected Attributes

static const unsigned int FADE_OUT_TIME = 400
 number of milliseconds to fade out lock on joints


The documentation for this class was generated from the following files:

Tekkotsu v3.0
Generated Fri May 11 20:08:02 2007 by Doxygen 1.4.7