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Recent content by JustusJohnston

  1. J

    [SOLVED] Trying to write SPI SD Card reader in verilog, getting weird data from CMD17

    yeah, I see your point. I wanted to include everything I’ve already tried (which will always be a lot before I go to the internet), but it’s understandable that most people just won’t want to read all that. Are you the mod that’s been reviewing my posts before they go live? My condolences. I’m...
  2. J

    [SOLVED] Trying to write SPI SD Card reader in verilog, getting weird data from CMD17

    I just tried connecting the uP to the other breakout, and it's no different. Works just fine. Oh well, so much for my crackpot theory about them hiding a processor somewhere eh? By the way, I looked closely at the logic analyzer output this time, and the OCR is reading 00 FF 80 00, which I...
  3. J

    [SOLVED] Trying to write SPI SD Card reader in verilog, getting weird data from CMD17

    First off, thank you for taking the time and effort to read through my problem, think it through, and give a response. I really appreciate it! It sounds like you have some relevant experience to share, as well. So, if I'm understanding you correctly, if it's "version 2" then address should be...
  4. J

    [SOLVED] Trying to write SPI SD Card reader in verilog, getting weird data from CMD17

    An update: As I mentioned I had planned to do in the previous post, over the weekend I found a mature microcontroller project that uses SD over SPI, compiled and deployed it, verified functionality, and recorded the SPI signals with a logic analyzer. I used it with the same 2GB generic card...
  5. J

    [SOLVED] Trying to write SPI SD Card reader in verilog, getting weird data from CMD17

    Hello all, I'm doing a simple noisemaker for a Lattice MachXO3 board using 16-bit digital audio samples, and after faffing around with tiny EEPROMs to store the samples, I decided to dive into micro SD. I eventually want to get to the point where an end user can just toss .WAV files onto the...

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