analogWrite not working with PLL

hello,
i using intel galileo gen2 dfrobot motor shield. power , wiring correct still analogwrite not working, , need move wheels backward. cannot use pwm because of conflict causes servo. here sample code not working:

code: [select]


arduino pll speed control
int e1 = 7;   
int m1 = 6;
int e2 = 4;                         
int m2 = 5;                           
 
void setup()
{
    pinmode(m1, output);   
    pinmode(m2, output);
    pinmode(e1, output);   
    pinmode(e2, output);
}
 
void loop()
{
//move forward woking because of digitalwrite
    digitalwrite(e1,high);   
    digitalwrite(e2, high);       
    analogwrite(m1, 255);
    analogwrite(m2, 255); 
    delay(30);

//move backward not working because analog not
    digitalwrite(e1,high);   
    digitalwrite(e2, high);       
    analogwrite(m1, 0);
    analogwrite(m2, 0); 
    delay(30);
  } 
}

any advice?

analogwrite() value of 255 no different digitalwrite() value of high.

analogwrite() value of 0 no different digitalwrite() value of low.

so, statement wheels not moving backwards because pwm not working nonsense. wheels don't go backwards because standing on brakes.

try novel analogwrite(thepin, 200); wheels given speed turn at.

the digitalwrite()s on enable pins controls direction. analogwrite() controls speed. think can envision 0 going pretty slow.

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