Hi just received the following message from a student in France:
Hello Max, I'm a french student working on a project based on a FPGA using an SD card (SD protocol).
I've seen your article talking about a Canadian student having also a problem with the CRC7. Did you find the solution? I'm trying to get the good CRC7 making the calculation on paper, but I never have the good answer.
If you have any clue or any suggestions, I'd love to hear them.
I am looking forward to hearing from you.
It was the last line that tugged on me. I cannot bear the thought of someone sitting there in a cold, dark room looking wistfully at their computer screen with a little tear rolling down their cheek and their lower lip quivering while thinking I don’t care about them. (Come on, admit it, you feel the same way, don't you?)
Now, I do remember that we were talking about CRC7 in the context of SD cards, but as I recall that was years and years ago when I was still a young man. I no longer remember the outcome of those discussions.
So, can anyone help this student with any thoughts or links to useful material on the web? If you have something more than a simple comment, email it to me at max@CliveMaxfield.com
and I can either forward it on or post it as a blog (or a "How To" Design Article) if it's to that level of depth.
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