The Beaglebone Cookbook page says the examples are tested with image 
2015-03-01.

So it looks like a "bug" in the latest 2015-11-12 image has broken the 
b.analogWrite() function, and causes apparently harmless error messages in 
the blinkled.js example.



On Wednesday, January 27, 2016 at 10:39:46 AM UTC-6, Wally Bkg wrote:
>
>
> After receiving advice to "stick with Wheezy if you want BoneScript" in 
> response to my question about it for Jessie in another thread, I've 
> installed "latest" image:
>  
> http://builds.beagleboard.org/images/master/08132bf0d0cb284d1148c5d329fe3c8e1aaee44d/bone-debian-7.9-lxde-4gb-armhf-2015-11-12-4gb.img.xz
>  
>
> Its current with apt-get update ; apt-get upgrade as of yesterday, but I'm 
> finding BoneScript is still broken in terms of running the Cloud9  *.js 
> examples.
>
> For instance, /var/lib/cloud9/examples/fade.js doesn't work, when run in 
> the c9 command window tab I get:
>
> debugger listening on port 15454
> error: Unable to read from CapeMgr slots: Write to CapeMgr slots failed: 
> Error: EINVAL, invalid argument
> info: Error loading devicetree overlay for P9_14 using template bspwm
> error: error updating PWM freq and value: undefined, Error: ENOENT, no 
> such file or directory 'undefined/duty'
> error: error updating PWM freq and value: undefined, Error: ENOENT, no 
> such file or directory 'undefined/duty'
>
> The repeated ENOENT error scrolls continuously until I press the "STOP" 
> button.
>
>
> The simple blinkled.js does work in that the user LEDs and the LED I wired 
> to P9_14 blink, but the command window shows an apparently harmless error 
> message:
>
> debugger listening on port 15454
> error: Unable to read from CapeMgr slots: Write to CapeMgr slots failed: 
> Error: EINVAL, invalid argument
>
>
>
> The analog2.js example runs without errors and seems correct compared to a 
> voltmeter across the CdS photocell I've wired up for the test.
>
>
> One would hope that an "official" image would at least run the "top level" 
> sample code correctly out of the box.
>
>
>

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