title: How to set PWM using sysfs in c code for beaglebone black pinout?
body: <p>I am a beginner in <code>beaglebone black</code> and I am working on <code>PWM pins</code> on two development boards<br>
  when I export pwm0 in the first board it shows me like,</p>
  
  <pre><code>/sys/class/pwm/pwmchip0/pwm-0\:0/
  </code></pre>
  
  <p>and when I export pwm0 in the second board it shows me like,</p>
  
  <pre><code>/sys/class/pwm/pwmchip0/pwm0/
  </code></pre>
  
  <p>I am confused now why in two <code>beaglebones</code> have a different name
  anyone help me</p>
  
  <p>Thanks, </p>