</div>
<div class="widget">
<div class="title">Pin out diagram</div>
- <p>To see the pin out diagram of the BBB, click <a href="">here</a>.</p>
+ <p>To see the pin out diagram of the BBB, click <a href="pinout-table.pdf" target="_blank">here</a>.</p>
</div>
<div class="widget">
- <div class="title">Unexport?</div>
+ <div class="title">Export/Unexport?</div>
<p>
- To 'unexport' a pin means to disable it. Apart from the obvious
+ To export/unexport a pin means to enable/disable it. Apart from the obvious
use case, sometimes this can be required if you use two PWM channels
that share the same frequency base.
</p>
</div>
<div class="widget">
<div class="title">PWM explained</div>
+ <p>The frequency must be a decimal number greater than 0.</p>
<p>
- The BBB has up to 8 PWM channels, with 6 having enhanced
- resolution.
+ The duty cycle describes the proportion of off/on time per period.
+ This number is specified as a ratio, with values ranging from 0 to 1.
</p>
<p>
- However, those 6 are paired, meaning that each pair must share the
- same frequency (although the duty cycle can be different).
+ The polarity determines if the duty represents the 'active
+ high' or 'active low' portion. By default, the duty cycle
+ represents the 'active high' portion.
</p>
</div>
</div>