Pololu Wixel User Manual download pdf (Page 55)

You might get the following error message from make in Windows:

make: Interrupt/Exception caught (code = 0xc00000fd, addr = 0x425073)

If you get this error, please run “make -v” at a Command Prompt and make sure that you are running

GNU Make 3.82-pololu2 [https://github.com/pololu/make]. This version of make is included in the latest

Wixel Development Bundle (see Section 10.a). If the output from “make -v” shows some other version

of make even after installing the Wixel Development Bundle, then you should remove that other

version of make from your PATH or reorder your PATH so that version 3.82-pololu2 is used. You can

edit your PATH environment variable from the Control Panel. See the pololu/make wiki on GitHub

[https://github.com/pololu/make/wiki] for more information on this problem.

Loading an App onto Wixels from the Command Line

While you are developing an app, it can be useful to have a way to load an app onto the target Wixel from

the command line. You can do this with the Makefile: plug a Wixel into your computer, open up a command

prompt, navigate to the wixel-sdk folder, and type make load_example_blink_led. This should compile the

example_blink_led app (if it is out of date) and then invoke the Wixel Command-Line Utility (WixelCmd) in order

to load the app onto all Wixels connected to your computer. The output should look something like this:

The example blink LED application should be running now. The Wixel’s yellow LED should be off, and the red LED

should be blinking. If that is the case, then congratulations! You have successfully compiled a program and loaded it

onto the Wixel.

You can also specify settings at the command line. Try running this command:

make load_example_blink_led S="blink_period_ms=100"

You should now see the LED blinking 5 times faster than it was before. To specify multiple settings, put other settings

inside the quotes and separate all settings with spaces.

Opening an App with the Wixel Configuration Utility

You can also open the app in the Wixel Configuration Utility if you want to. Try running this command:

make open_example_blink_led

The Wixel Configuration Utility should start running and open the example_blink_led app.

10. Writing Your Own Wixel App Page 55 of 64

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Pololu Wixel User Manual Page 55