Category Archives: Uncategorized

LPC Microcontroller flash checksum utility

Wrote an utility to fix something annoying in my micro-controller work-flow. If you’re coding for the LPC17xx micro-controllers under Linux using OpenOCD and the GNU tool-chain you’re likely familiar with the following message during flashing: Warn : Verification will fail … Continue reading

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SWP Tracer/Sniffer

It’s possible to modify the SWP Transceiver front-end circuit presented earlier to a full functional SWP Tracer/Sniffer. This is almost the same circuit as the SWP transceiver but I moved some parts around to make the signal flow a bit … Continue reading

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SWP Reader – The Analog Part

SWP Reader Analog Front-End Continue reading

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SWP Reader Evolution

I’ve been working on my SWP reader for about a year now, so I think it’s a good time to dump some photos and show how the project evolved: The first “proof of concept” prototype: For this prototype I decided … Continue reading

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Ultra simple ISO-7816 Interface

While laying out a PCB for my SWP reader project I realized that I haven’t ever tested the ISO-7816 (aka contact) interface yet. I probably forgot that because it’s not all that difficult and not that interesting, but I’d rather … Continue reading

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NFC SWP Physical Layer – How it works

As I’m currently building an NFC-SWP reader device I have to tackle quite some challenges simply because there there is no single chip solution out there that you can simply connect to USB and a SIM card. Most NFC Controllers … Continue reading

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About a failed Circuit Idea

I had a circuit idea in mind that I’ve never been able to try out. I’m working on a SWP reader device right now (that’s a device that should directly talk to NFC enabled SIM cards). So recently while browsing … Continue reading

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2009/2010 Status Update

So, 2010 has arrived. Time for a little status update on my multi-effect project for the BeagleBoard. Well – I still don’t have sound output, but I have made some significant steps: I got the DSP working! That does not … Continue reading

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