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sago35
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package sdcard
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import "fmt"
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type CID struct {
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//// byte 0
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ManufacturerID byte
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//uint8_t mid; // Manufacturer ID
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//// byte 1-2
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OEMApplicationID uint16
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//char oid[2]; // OEM/Application ID
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//// byte 3-7
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ProductName string
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//char pnm[5]; // Product name
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//// byte 8
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ProductVersion string
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//unsigned prv_m : 4; // Product revision n.m
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//unsigned prv_n : 4;
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//// byte 9-12
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ProductSerialNumber uint32
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//uint32_t psn; // Product serial number
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//// byte 13
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ManufacturingYear byte
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ManufacturingMonth byte
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//unsigned mdt_year_high : 4; // Manufacturing date
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//unsigned reserved : 4;
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//// byte 14
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//unsigned mdt_month : 4;
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//unsigned mdt_year_low : 4;
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//// byte 15
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Always1 byte
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//unsigned always1 : 1;
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CRC byte
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//unsigned crc : 7;
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}
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func NewCID(buf []byte) *CID {
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return &CID{
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ManufacturerID: buf[0],
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OEMApplicationID: (uint16(buf[0]) << 8) | uint16(buf[1]),
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ProductName: string(buf[3:8]),
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ProductVersion: fmt.Sprintf("%d.%d", (buf[8]&0xF0)>>4, buf[8]&0x0F),
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ProductSerialNumber: (uint32(buf[9]) << 24) | (uint32(buf[10]) << 16) | (uint32(buf[11]) << 8) | uint32(buf[12]),
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ManufacturingYear: (buf[13] & 0xF0) | (buf[14] & 0x0F),
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ManufacturingMonth: (buf[14] & 0xF0) >> 4,
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Always1: (buf[15] & 0x80) >> 7,
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CRC: buf[15] & 0x7F,
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}
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}
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