Use/Conversion of Cypress Output Values

[Greg McKaskle]

The config VI you mentioned has help that explains its purpose ...

"This VI returns sets the mode of each digital channel. All 16 channels can be inputs with configurable pull up/down resistors and can be driven as outputs. Some channels have additional capabilities as listed in the mode ring. Additionally, this VI configures the PWM and encoders for the I/O device connected to the driver station."

You have the choice of doing the configuration using the dialog on the DS, or on the robot's code, whichever you think will be more predictable. You can also reconfigure during the match, via the robot code, but that would be unexpected.

The other VIs in the palette allow you to configure the other types of I/O and set/get the various values.

It is a dense little thingy, so feel free to ask questions if you have them.

Greg McKaskle

[kws4000]

Dense little thingy indeed.

How would I set the Digital Mode? Looks like I have to bundle a cluster with values attached to it, but what values?

Also, would setting the Digital Mode for [9-16] to Input instead of Output allow me to extract more from the GetEnhancedDigitalInput VI?

[Greg McKaskle]

Originally Posted by kws4000

How would I set the Digital Mode? Looks like I have to bundle a cluster with values attached to it, but what values?

Also, would setting the Digital Mode for [9-16] to Input instead of Output allow me to extract more from the GetEnhancedDigitalInput VI?

Setting the digital mode is done with the Enhanced Set Digital Config VI. As with lots of WPILib, if the summary description doesn't make sense, the most obvious way to determine how it works is probably to open its panel. The attached image shows that there are sixteen selectors with options generally of Input (high, low, or floating), Output, and sometimes other functions such as PWM (first four channels), or Analog comparator (last two channels). If you right click on the terminal of the original icon and create a control or constant, it will bring along all of those enum selectors. You can also copy/paste it to the calling diagram. As mentioned in the other post, you can also do this once on a DS, and it will save the settings to its ini file and use them the next time. If you have a shared DS, the robot config may make more sense, but otherwise, I'd probably do the DS, since it is the closest to the Cypress board and the rest of the driving switches, etc.

To extract data from the digital inputs, you use the Get Enhanced Digital Input VI, and it returns an array of sixteen values. There can be up to sixteen inputs. If you haven't configured a pin to be an input, then the value for that position is not all that useful and may in fact be misleading.

Greg McKaskle

[kws4000]

Gee thanks, but it doesn't work.

I got the CONFIG good.
The INPUT array only returns from 0-8.

So how will the CONFIG tell the INPUT to change its domain of values?

[Alan Anderson]

Originally Posted by kws4000

The INPUT array only returns from 0-8.

The Array To Cluster function creates a cluster of 9 elements by default. Right-click on it and select Cluster Size... from the popup menu to change it to 16.

[kws4000]

Originally Posted by Alan Anderson

The Array To Cluster function creates a cluster of 9 elements by default. Right-click on it and select Cluster Size... from the popup menu to change it to 16.

FACEPALM! Ok, it wasn't that obvious, but hey, the devil's in the details!

Would you accept a virtual hug of graditude from me? Thanks a lot!