Chad Kidder
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This is just a quick snippet of code for you if you happen to be using a Blackfin BF51x processor and have some space and pins on an external FPGA to spare.
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Permanent link to this article: http://blog.curioussystem.com/2013/08/vhdl-memory-decoder-for-bf51x/
You’ve heard of cognitive radio and the promise of bandwidth where the TV channels are not. We now have a standard for at least one of those. Please welcome Weightless to the list of standards for unlicensed “white space” communications. I recently heard a good presentation on what Weightless is and what its potential is.
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Permanent link to this article: http://blog.curioussystem.com/2013/07/white-spaces-standards-for-telemetry/
I’ve recently been reading up on software defined radio (SDR). An epiphany that I had recently was that if we have sampled a signal so that we meet the Nyquist criteria, we can reproduce the points between the points we took.
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Permanent link to this article: http://blog.curioussystem.com/2013/07/nyquist-signal-expansion-with-python/
I’ve noticed recently that the number of bits available in an ADC is slowly creeping up. That makes me excited… until I look at the system accuracy.
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Permanent link to this article: http://blog.curioussystem.com/2013/06/these-are-not-the-bits-youre-looking-for/
I had an interesting problem show up when I was working on a project at the beginning of the year. It involved an Analog Devices Blackfin 51x series processor. We went to transition to their new IDE and that’s when we started noticing problems with the Flash RAM.
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Permanent link to this article: http://blog.curioussystem.com/2013/06/two-wrongs-make-a-working-prototype/
I previously wrote my review of the Freescale KL25. Since then I’ve finished my first design with the KL25. The second spin of the board will see several of the peripherals and pins rearranged. Most of this has to do with things that I glossed over in the documentation desire to get the product to …
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Permanent link to this article: http://blog.curioussystem.com/2013/06/freescale-kl25-peripheral-selection-guide/
One of the projects I’m working on I chose to use one of the new Freescale KL25 MCUs. They have an ARM Cortex-M0+ core and lots of peripherals to boot, including ones specifically designed for low power usage. Below are some of the reasons why I chose it, and what my experiences with it have …
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Permanent link to this article: http://blog.curioussystem.com/2013/02/freescale-kl25-cortex-m-0-review/
… or how to edit a .hex file instead of recompiling it for every option. I had a product a while back where the customer needed to program it, but we didn’t want them to have to hassle with compiling it for every (10,000+) permutation. I had a whole build system set up when this …
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Permanent link to this article: http://blog.curioussystem.com/2012/12/editing-pic-hex-files/
We had a bug that just wouldn’t go away. Sometimes it would show up quickly, sometimes it would show up after the code had been running for a few days… but it would show up. What’s the programmer to do?
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Permanent link to this article: http://blog.curioussystem.com/2012/05/the-case-of-the-random-lockup/
Sometimes you end up having to program a device with many different types of firmware. For a project I’ve used PICs on, this was the case. Here’s how to setup things so that all it requires is two clicks to load the firmware from windows explorer.
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Permanent link to this article: http://blog.curioussystem.com/2012/02/two-clicks-to-program-a-pic/
