sorry, i did't make it clear.
i had used helloioio for testing , it's work.
my question is ,when i set pin41 → ain1_ = ioio_.openDigitalOutput(41,
true); it should output 3.3v in pin41 , but it only output 0.02v or less.
is it possible the liberty version doesn't match to ioio-otg
and this is my source code
package ioio;
import com.example.ioio.R;
import ioio.lib.api.DigitalOutput;
import ioio.lib.api.DigitalOutput.Spec.Mode;
import ioio.lib.api.PwmOutput;
import ioio.lib.api.exception.ConnectionLostException;
import ioio.lib.util.BaseIOIOLooper;
import ioio.lib.util.IOIOLooper;
import ioio.lib.util.android.IOIOActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Button;
public class MainActivity extends IOIOActivity{
private static final int PWM_FREQ = 100;
private float left_ = 0;
private float right_ = 0;
Button forward,backward,left,right,stop;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
forward = (Button)findViewById(R.id.forward);
backward = (Button)findViewById(R.id.backward);
left = (Button)findViewById(R.id.left);
right = (Button)findViewById(R.id.right);
stop = (Button)findViewById(R.id.stop);
}
class Looper extends BaseIOIOLooper{
private DigitalOutput ain1_;
private DigitalOutput ain2_;
private PwmOutput pwma_;
private PwmOutput pwmb_;
private PwmOutput led_;
private DigitalOutput bin2_;
private DigitalOutput bin1_;
private DigitalOutput stby_;
final TextView xView = (TextView) findViewById(R.id.a);
protected void setup() throws ConnectionLostException {
ain1_ = ioio_.openDigitalOutput(41, false);
ain2_ = ioio_.openDigitalOutput(40, false);
pwma_ = ioio_.openPwmOutput(new DigitalOutput.Spec(39,
Mode.OPEN_DRAIN), PWM_FREQ);
pwmb_ = ioio_.openPwmOutput(new
DigitalOutput.Spec(45,Mode.OPEN_DRAIN), PWM_FREQ);
bin2_ = ioio_.openDigitalOutput(44,, false);
bin1_ = ioio_.openDigitalOutput(43,false);
stby_ = ioio_.openDigitalOutput(42, false);
stby_.write(true); // On
led_ = ioio_.openPwmOutput(0,PWM_FREQ);
forward.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
pwma_.setDutyCycle((float)1.0);
ain1_.write(true);
ain2_.write(false);
pwmb_.setDutyCycle((float)1.0);
bin1_.write(true);
bin2_.write(false);
}catch(ConnectionLostException e){
e.printStackTrace();
}
}
});
backward.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
pwma_.setDutyCycle((float)1.0);
ain1_.write(false);
ain2_.write(true);
pwmb_.setDutyCycle((float)1.0);
bin1_.write(false);
bin2_.write(true);
}catch(ConnectionLostException e){
e.printStackTrace();
} }
});
left.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
pwma_.setDutyCycle((float)1.0);
ain1_.write(true);
ain2_.write(false);
pwmb_.setDutyCycle((float)0.5);
bin1_.write(true);
bin2_.write(false);
}catch(ConnectionLostException e){
e.printStackTrace();
}
}
});
right.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
pwma_.setDutyCycle((float)0.5);
ain1_.write(true);
ain2_.write(false);
pwmb_.setDutyCycle((float)1.0);
bin1_.write(true);
bin2_.write(false);
}catch(ConnectionLostException e){
e.printStackTrace();
}
}
});
stop.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
ain1_.write(false);
ain2_.write(false);
bin1_.write(false);
bin2_.write(false);
}catch(ConnectionLostException e){
e.printStackTrace();
}
}
});
}
public void loop() throws ConnectionLostException{
try{
Thread.sleep(50);
}catch(InterruptedException e){
e.printStackTrace();
}
}
}
protected IOIOLooper createIOIOLooper() {
return new Looper();
}
}
jack於 2014年5月24日星期六UTC+8上午10時56分56秒寫道：
>
> Hello, i'm trying to use IOIO-otg board drive DCmotor by driver tb6612fng.
> Unfortunately,it didn't work,and i found that the pin didn't output
> neither 3.3v nor 5v, i have no idea how to fix it.
> Please help me!!!
> Thank you very much!!
>
> And here is my source code,my IOIOlib is IOIO0503
>
>
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