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
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
#include "sd_card_id.h"
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#include <cstdio>
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namespace roro {
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namespace {
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char printable(uint8_t b) { return b >= 0x20 && b < 0x7F ? static_cast<char>(b) : '?'; }
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} // namespace
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SdCardId parseSdCid(const uint8_t cid[16]) {
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SdCardId id;
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id.manufacturer = cid[0];
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for (int i = 0; i < 2; ++i) id.oem[i] = printable(cid[1 + i]);
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for (int i = 0; i < 5; ++i) id.product[i] = printable(cid[3 + i]);
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id.revisionMajor = cid[8] >> 4;
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id.revisionMinor = cid[8] & 0x0F;
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id.serial = static_cast<uint32_t>(cid[9]) << 24 | cid[10] << 16 | cid[11] << 8 | cid[12];
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// 4 reserved bits, 8 bits of year since 2000, 4 bits of month.
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id.year = 2000 + (((cid[13] & 0x0F) << 4) | (cid[14] >> 4));
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id.month = cid[14] & 0x0F;
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return id;
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}
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const char* sdManufacturerName(uint8_t id) {
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switch (id) {
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case 0x01: return "Panasonic";
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case 0x02: return "Toshiba/Kioxia";
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case 0x03: return "SanDisk";
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case 0x1B: return "Samsung";
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case 0x1D: return "ADATA";
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case 0x27: return "Phison";
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case 0x28: return "Lexar";
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case 0x31: return "Silicon Power";
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case 0x41: return "Kingston";
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case 0x74: return "Transcend";
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case 0x76: return "Patriot";
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case 0x82: return "Sony";
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case 0x9C: return "Angelbird/Hoodman";
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case 0xAD: return "Longsys/Lexar";
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default: return "unknown";
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}
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}
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std::string sdCardSummary(const SdCardId& id) {
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char s[112];
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std::snprintf(s, sizeof s, "%s (0x%02X) \"%s\" \"%s\" rev %u.%u, serial %08x, made %04d-%02d",
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sdManufacturerName(id.manufacturer), id.manufacturer, id.oem, id.product, id.revisionMajor,
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id.revisionMinor, static_cast<unsigned>(id.serial), id.year, id.month);
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return s;
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}
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} // namespace roro
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