Over the past seven years (the age of this blog) I started writing several articles that I never finished. It’s time to trash them completely or just add them to a list for future afterthoughts. Who knows ? So, from older to newer: “Weller WD 1000 M Review – Part III – Software”, January 18, 2013 — …
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Category:Kernel and drivers
SCPI on Mac
Some more days passed and some more finishing touches added to my MacSCPI app. It is entirely dependent on hooking the device via the USBTMC driver, but it works fine and is stable: I had some problems with buffer padding and the output it is still not 100% gibberish–free , but I assume I have to play with …
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USBTMC driver for Mac
After some head banging, I finally managed to send SCPI commands from my Mac to my Agilent (Keysight) DSOX2002A. I’ve worked on this since december last year. Almost a year, but I did not spent a sustained amount of effort. I did it just during my free time. I still have a day job that …
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Writing serial drivers for OS X (1)
At least one thing can be improved on Mac Dev Center: the code sample repository. I am not talking about documentation. In this particular case, there’s not much new to write about. The I/O Kit documentation (grab the pdf while it is stil there) is sufficient. On the shelves are tons on books about C and …
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IOUserClient and IOExternalMethod
While developing the OS X driver for my Agilent DSO-X 2002A oscilloscope, I ran into a topic that I found to be poorly documented. It is about interaction with a device driver. There are several ways to communicate with a device driver from client space (the application). One is by modifying driver properties. This method requires …
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Agilent DSO-X 2002A driver for Mac OS X
Update, October 2nd, 2014: a more recent adavancement in running SCPI on mac, can be found here. Update, December 10th, 2015: Updated terms, changed Agilent to Keysight. December again, another year passed. Traditionally, this is a month when I am taking a long break. But I was up to something in the past days and …
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Writing a (working) USB driver for OS X
For some time I was struggling with an ambitious project, to write a Mac driver for my Agilent DSO-X 2002A oscilloscope (see here). The reason behind this is SCPI and the opportunity to reach fresh perspectives in computer–measurement instruments’ integration. However, it was not an easy way. More of a reverse–engineering project, was very time–consuming …
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