Public Access
twislaandClaude Opus 5.5
370f067fbf
Type, size, and the identity register read by our SD driver (CMD10): manufacturer, OEM, product name, revision, serial and date, decoded by a host-tested parser. Needed for the upstream report of #21: nothing else here could read the card's identity. This one is a Samsung 8 GB SDHC from June 2013. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
34 lines
1.2 KiB
C++
34 lines
1.2 KiB
C++
#pragma once
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#include <cstdint>
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namespace roro {
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// Why the SD driver last gave up on a write (see sd_diskio.cpp, issue #21). The framework's driver
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// fails without saying why; ours records it.
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struct SdFault {
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enum Step : uint8_t {
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None,
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EraseCount, // ACMD23 before a multi-block write was refused
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Select, // the card stayed busy for 500 ms
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Command, // the write command itself was refused
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DataToken, // the card's answer to a data block: 0x0B CRC error, 0x0D write error
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BusyAfter, // still busy 500 ms after the last block
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Status, // CMD13 after the write reported an error (resp)
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StopCommand, // CMD12 after a rejected block was refused
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};
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Step step = None;
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uint8_t token = 0; // the driver's or the card's answer at that step
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uint32_t resp = 0; // CMD13's status bits, for Status
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uint32_t count = 0; // failed writes since boot
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uint32_t retried = 0; // blocks resent after a CRC error, since boot
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};
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SdFault sdLastFault();
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// The mounted card's identity register (CID, CMD10): who made it, its name, serial and date.
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// Call it where card access is allowed (the storage task).
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bool sdReadCid(uint8_t cid[16]);
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} // namespace roro
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