controlling 2 motors independently
Posted: 06 Oct 2012, 21:18
Hello, and sorry for the mistakes I will do (I'm french).
MY LANGUAGE IS NXC
I try to control two motors independently in my program, I explain : my robot is the PnP from http://www.youtube.com/watch?v=-ZolqjEnhB4, and I have 1 motor for rotation along the main axis (left-right : OUT_A) and the other one to make the arm go up or down (OUT_B). But I don't manage to control these motors in the same time : I'd like to say "goTo(valdegreeforA, valdegreeforB)" and the robot would move both motors in the same time. But all I managed to get is one motor after the other one, or, by using OnFwd(motor, val), a low precision.
code with task :
code with OnFwd and motorRotationCount :
So, basically, I'd like to know how to be able to control 2 motors in 1 command, simultaneously.
Thank's you very much if you can help me !
MY LANGUAGE IS NXC
I try to control two motors independently in my program, I explain : my robot is the PnP from http://www.youtube.com/watch?v=-ZolqjEnhB4, and I have 1 motor for rotation along the main axis (left-right : OUT_A) and the other one to make the arm go up or down (OUT_B). But I don't manage to control these motors in the same time : I'd like to say "goTo(valdegreeforA, valdegreeforB)" and the robot would move both motors in the same time. But all I managed to get is one motor after the other one, or, by using OnFwd(motor, val), a low precision.
code with task :
Code: Select all
#define AXIS OUT_A
#define ARM OUT_B
#define espace -45
#define gauche -90
#define droite 90
#define haut 130
#define bas 0
#define degree1turn 20171
#define heighTomber 20
int stockGauche;
int degreeVal;
int goal;
bool axisMvt;
bool armMvt;
bool Mvt;
task orientation()
{
axisMvt = true;
//compute degree to turn to get the orientation degreeVal
int degreMoteur = degreeVal*degree1turn/360 - MotorRotationCount(AXIS);
RotateMotor(AXIS, 100, degreMoteur);
axisMvt = false;
}
//move arm till a certain value in degree
task heigh()
{
armMvt = true;
//compute degree to turn to get the orientation goal
int degreMoteur = goal - MotorRotationCount(BRAS);
int strenghMotorB = 20;
RotateMotor(ARM, forceMoteurB, degreMoteur);
armMvt = false;
}
task mvtLook()
{
while(true)
{
Mvt = (axisMvt||armMvt);
Wait(100);
}
}
void goTo(int axisVal, int armVal)
{
until(Mvt == false);
degreeVal = axisVal;
goal = armVal;
StartTask(heigh);
StartTask(orientation);
}
task main()
{
//INITIALISATION
ResetTachoCount(AXIS);
ResetTachoCount(BRAS);
axisMvt = false;
armMvt = false;
StartTask(mvtLook);
goTo(0, haut);
goTo(espace, bas);
}
Code: Select all
#define degA 1000
#define degB 1000
task main()
{
ResetTachoCount(OUT_A);
ResetTachoCount(OUT_B);
int depart_A = MotorRotationCount(OUT_A);
int depart_B = MotorRotationCount(OUT_B);
int distA = 0;
int distB = 0;
OnFwd(OUT_A, 50);
OnFwd(OUT_B, 50);
bool reachA = false;
bool reachB = false;
do
{
distA = MotorRotationCount(OUT_A) - depart_A;
distB = MotorRotationCount(OUT_B) - depart_B;
reachA = (distA >= degA);
reachB = (distB >= degB);
if (reachA)
{
Off(OUT_A);
}
if (reachB)
{
Off(OUT_B);
}
} while (((reachA && reachB) == false));
NumOut(0, LCD_LINE3, MotorRotationCount(OUT_A));
NumOut(50, LCD_LINE3, MotorRotationCount(OUT_B));
Wait(3000);
}
Thank's you very much if you can help me !