One more tidbit
http://beagleboard.org/support/BoneScript/analogWrite/

*/Note:/ This function is currently incompatible with pinMode which may
force the pin mux to GPIO mode only. *


On 6/4/2016 10:31 PM, Md Khaled Hossain wrote:
> Here I am trying to turn on a buzzer for one second and then turn it
> off. Here is the code
>
> |
> #!/usr/bin/env node
> varb =require('bonescript');
>
> b.pinMode('P8_19',b.ANALOG_OUTPUT);
>
>
> b.analogWrite('P8_19',0.5,2000.0,printStatus);
>
> functionprintStatus(x){
>     console.log('x.value = '+x.value);
>     console.log('x.err = '+x.err);
> }
>
> setTimeout(function(){
>         b.analogWrite('P8_19',b.low);    // Turn off buzzer after
> milliseconds time
>     },1000);
> |
>
> This code gives the following error after i try to run it immediately
> after reboot
> error: Error enabling PWM controls: Error: ENOENT, no such file or
> directory '/sys/devices/ocp.3/bs_pwm_
>
> test_P8_19.15/polarity'
>
>
> how to solve the problem?
>
>
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