SD memory card - Write

이번 글에서는 SD 메모리 카드와 관련된 마지막 기능으로 SD 메모리 쓰기 동작에 대하여 설명하도록 하겠다.

쓰기 동작은 앞에서 설명한 읽기 동작의 정 반대로 구현 하면 된다.

SD 메모리 카드 규격 문서에는 위와 같은 표에 대한 설명이 들어 있다.  하나의 메모리 블럭 쓰기 동작을 위해서는 CMD24를 사용하면 되고, 여러 블럭에 대하여 연속 쓰기를 위해서는 CMD25를 사용하면 된다.

UART 콘솔 창에서의 명령으로 특정 SD 메모리 블럭에 대한 쓰기 동작을 위한 코드는 다음과 같이 만들 수 있다.

static void write_mem(int argc, char **argv) { uint32_t num_blk = 0; uint32_t blk_count = 1; if (argc>1) num_blk = strtoul(argv[1], NULL, 0); if (argc>2) blk_count = strtoul(argv[2], NULL, 0); if (blk_count == 0) blk_count = 1; if (blk_count > 1) { if (blk_count > 4) blk_count = 4; write_mem_multi(num_blk, blk_count); } else write_mem_single(num_blk); } CLI_CMD(write, "Write Data to SD Memory", write_mem);

이미 앞에서 설명한 읽기를 위한 코드와 동일하므로 따로 설명이 필요하지는 않을것이다.

static void write_mem_single(uint32_t num_blk) { struct sd_cmd cmd; struct sd_data data; uint8_t buf[SD_MEM_BUF_SZ]; printf("Write Single Block [0x%X]\n", num_blk); fill_mem(buf, SD_MEM_BUF_SZ); cmd.cmd_idx = SD_CMD_WRITE_SINGLE_BLOCK; if (high_capacity) cmd.arg = num_blk; else cmd.arg = num_blk * SD_MEM_BUF_SZ; cmd.resp_type = SD_RSP_R1; data.src = (void*)buf; data.blocks = 1; data.block_size = SD_MEM_BUF_SZ; data.flags = SD_DATA_WRITE; if (sd_cmd_request(&cmd, &data)) { printf("Write Block error\n"); return; } }

하나의 블럭에 대한 쓰기 동작을 위한 write_mem_single() 코드도 읽기 동작에서 사용했던 코드와 거의 유사하다.

다른 점이 있다면, 쓰기 동작을 확인하기 위하여 쓰고자 하는 데이터를 미리 특정 값으로 채우기 위한 fill_mem() 코드가 추가되었다는 것과, 쓰기 동작을 위한 CMD를 지정하였고 17번줄을 보면 읽기 동작에서는 dst가 사용되었는데 쓰기 동작에서는 src를 사용하였다.

static void write_mem_multi(uint32_t num_blk, uint32_t blk_count) { struct sd_cmd cmd; struct sd_data data; uint8_t *multi_buf = calloc(blk_count, SD_MEM_BUF_SZ); if (multi_buf == NULL) { printf("MEM Buffer Alloc Fail\n"); return; } printf("Write Multi Block [0x%X:%u]\n", num_blk, blk_count); fill_mem(multi_buf, blk_count*SD_MEM_BUF_SZ); cmd.cmd_idx = SD_CMD_WRITE_MULTIPLE_BLOCK; if (high_capacity) cmd.arg = num_blk; else cmd.arg = num_blk * SD_MEM_BUF_SZ; cmd.resp_type = SD_RSP_R1; data.src = (void*)multi_buf; data.blocks = blk_count; data.block_size = SD_MEM_BUF_SZ; data.flags = SD_DATA_WRITE; if (sd_cmd_request(&cmd, &data)) { printf("Write Block error\n"); goto done; } cmd.cmd_idx = SD_CMD_STOP_TRANSMISSION; cmd.arg = 0; cmd.resp_type = SD_RSP_R1b; if (sd_cmd_request(&cmd, NULL)) { printf("Stop Write Block error\n"); goto done; } done: free(multi_buf); }

여러개 블럭을 한번의 명령으로 쓰기 위한 write_mem_multi()은 위와 같이 만들 수 있다.  역시 read_mem_multi()와 동일한 구조를 가지며 몇개의 코드만 write에 해당 되는 내용으로 수정한 것을 볼 수 있다.

static inline uint16_t swap16(uint16_t val) { return (((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8)); } static void fill_mem(void *buf, uint32_t len) { uint16_t *mem_buf = buf; int i; for (i=0; i<len/2; i++) *mem_buf++ = swap16(i); }

쓰기 동작을 확인하기 위한 특정 패턴으로 데이터를 만들기 위한 fill_mem()은 위와 같다.

2바이트 값의 일련 번호를 만드는 코드이다.  이 값으로 제대로 읽히는지 확인해 보면 쓰기 동작이 제대로 동작 되었는지 확인해 볼 수 있을 것이다.

Single write 명령을 수행한 결과 화면을 볼 수 있다.

Write 하기 전에는 모두 0으로 채워져 있던 블럭이 write 동작 후 빨간 박스로 표시되어 있는 부분처럼 2바이트 단위로 1씩 증가 되는 값이 쓰여져 있음을 확인할 수 있다.

[Just4Fun]$ read 0 Read Single Block [0x0] 0000: 00000000 00000000 00000000 00000000 | ................ 0010: 00000000 00000000 00000000 00000000 | ................ 0020: 00000000 00000000 00000000 00000000 | ................ 0030: 00000000 00000000 00000000 00000000 | ................ 0040: 00000000 00000000 00000000 00000000 | ................ 0050: 00000000 00000000 00000000 00000000 | ................ 0060: 00000000 00000000 00000000 00000000 | ................ 0070: 00000000 00000000 00000000 00000000 | ................ 0080: 00000000 00000000 00000000 00000000 | ................ 0090: 00000000 00000000 00000000 00000000 | ................ 00A0: 00000000 00000000 00000000 00000000 | ................ 00B0: 00000000 00000000 00000000 00000000 | ................ 00C0: 00000000 00000000 00000000 00000000 | ................ 00D0: 00000000 00000000 00000000 00000000 | ................ 00E0: 00000000 00000000 00000000 00000000 | ................ 00F0: 00000000 00000000 00000000 00000000 | ................ 0100: 00000000 00000000 00000000 00000000 | ................ 0110: 00000000 00000000 00000000 00000000 | ................ 0120: 00000000 00000000 00000000 00000000 | ................ 0130: 00000000 00000000 00000000 00000000 | ................ 0140: 00000000 00000000 00000000 00000000 | ................ 0150: 00000000 00000000 00000000 00000000 | ................ 0160: 00000000 00000000 00000000 00000000 | ................ 0170: 00000000 00000000 00000000 00000000 | ................ 0180: 00000000 00000000 00000000 00000000 | ................ 0190: 00000000 00000000 00000000 00000000 | ................ 01A0: 00000000 00000000 00000000 00000000 | ................ 01B0: 00000000 00000000 00000000 00000000 | ................ 01C0: 00000000 00000000 00000000 00000000 | ................ 01D0: 00000000 00000000 00000000 00000000 | ................ 01E0: 00000000 00000000 00000000 00000000 | ................ 01F0: 00000000 00000000 00000000 00000000 | ................ [Just4Fun]$ write 0 Write Single Block [0x0] [Just4Fun]$ read 0 Read Single Block [0x0] 0000: 00000001 00020003 00040005 00060007 | ................ 0010: 00080009 000A000B 000C000D 000E000F | ................ 0020: 00100011 00120013 00140015 00160017 | ................ 0030: 00180019 001A001B 001C001D 001E001F | ................ 0040: 00200021 00220023 00240025 00260027 | . .!.".#.$.%.&.' 0050: 00280029 002A002B 002C002D 002E002F | .(.).*.+.,.-.../ 0060: 00300031 00320033 00340035 00360037 | .0.1.2.3.4.5.6.7 0070: 00380039 003A003B 003C003D 003E003F | .8.9.:.;.<.=.>.? 0080: 00400041 00420043 00440045 00460047 | .@.A.B.C.D.E.F.G 0090: 00480049 004A004B 004C004D 004E004F | .H.I.J.K.L.M.N.O 00A0: 00500051 00520053 00540055 00560057 | .P.Q.R.S.T.U.V.W 00B0: 00580059 005A005B 005C005D 005E005F | .X.Y.Z.[.\.].^._ 00C0: 00600061 00620063 00640065 00660067 | .`.a.b.c.d.e.f.g 00D0: 00680069 006A006B 006C006D 006E006F | .h.i.j.k.l.m.n.o 00E0: 00700071 00720073 00740075 00760077 | .p.q.r.s.t.u.v.w 00F0: 00780079 007A007B 007C007D 007E007F | .x.y.z.{.|.}.~.. 0100: 00800081 00820083 00840085 00860087 | ................ 0110: 00880089 008A008B 008C008D 008E008F | ................ 0120: 00900091 00920093 00940095 00960097 | ................ 0130: 00980099 009A009B 009C009D 009E009F | ................ 0140: 00A000A1 00A200A3 00A400A5 00A600A7 | ................ 0150: 00A800A9 00AA00AB 00AC00AD 00AE00AF | ................ 0160: 00B000B1 00B200B3 00B400B5 00B600B7 | ................ 0170: 00B800B9 00BA00BB 00BC00BD 00BE00BF | ................ 0180: 00C000C1 00C200C3 00C400C5 00C600C7 | ................ 0190: 00C800C9 00CA00CB 00CC00CD 00CE00CF | ................ 01A0: 00D000D1 00D200D3 00D400D5 00D600D7 | ................ 01B0: 00D800D9 00DA00DB 00DC00DD 00DE00DF | ................ 01C0: 00E000E1 00E200E3 00E400E5 00E600E7 | ................ 01D0: 00E800E9 00EA00EB 00EC00ED 00EE00EF | ................ 01E0: 00F000F1 00F200F3 00F400F5 00F600F7 | ................ 01F0: 00F800F9 00FA00FB 00FC00FD 00FE00FF | ................ [Just4Fun]$

쓰기 동작을 확인한 결과는 위와 같다.  512바이트 크기의 데이터가 제대로 쓰여져 있음을 확인할 수 있다.

Multi block 쓰기 동작에 대한 결과 화면은 위와 같다.  1~4번 블럭에 대한 읽기 동작을 수행하여 전체 영역이 0으로 채워져 있음을 확인한 후, 쓰기 동작후 일련 번호로 바뀌어 진것을 확인하였다.

[Just4Fun]$ read 1 4 Read Multi Block [0x1:4] 0000: 00000000 00000000 00000000 00000000 | ................ 0010: 00000000 00000000 00000000 00000000 | ................ 0020: 00000000 00000000 00000000 00000000 | ................ 0030: 00000000 00000000 00000000 00000000 | ................ 0040: 00000000 00000000 00000000 00000000 | ................ 0050: 00000000 00000000 00000000 00000000 | ................ 0060: 00000000 00000000 00000000 00000000 | ................ 0070: 00000000 00000000 00000000 00000000 | ................ 0080: 00000000 00000000 00000000 00000000 | ................ 0090: 00000000 00000000 00000000 00000000 | ................ 00A0: 00000000 00000000 00000000 00000000 | ................ 00B0: 00000000 00000000 00000000 00000000 | ................ 00C0: 00000000 00000000 00000000 00000000 | ................ 00D0: 00000000 00000000 00000000 00000000 | ................ 00E0: 00000000 00000000 00000000 00000000 | ................ 00F0: 00000000 00000000 00000000 00000000 | ................ 0100: 00000000 00000000 00000000 00000000 | ................ 0110: 00000000 00000000 00000000 00000000 | ................ 0120: 00000000 00000000 00000000 00000000 | ................ 0130: 00000000 00000000 00000000 00000000 | ................ 0140: 00000000 00000000 00000000 00000000 | ................ 0150: 00000000 00000000 00000000 00000000 | ................ 0160: 00000000 00000000 00000000 00000000 | ................ 0170: 00000000 00000000 00000000 00000000 | ................ 0180: 00000000 00000000 00000000 00000000 | ................ 0190: 00000000 00000000 00000000 00000000 | ................ 01A0: 00000000 00000000 00000000 00000000 | ................ 01B0: 00000000 00000000 00000000 00000000 | ................ 01C0: 00000000 00000000 00000000 00000000 | ................ 01D0: 00000000 00000000 00000000 00000000 | ................ 01E0: 00000000 00000000 00000000 00000000 | ................ 01F0: 00000000 00000000 00000000 00000000 | ................ 0200: 00000000 00000000 00000000 00000000 | ................ 0210: 00000000 00000000 00000000 00000000 | ................ 0220: 00000000 00000000 00000000 00000000 | ................ 0230: 00000000 00000000 00000000 00000000 | ................ 0240: 00000000 00000000 00000000 00000000 | ................ 0250: 00000000 00000000 00000000 00000000 | ................ 0260: 00000000 00000000 00000000 00000000 | ................ 0270: 00000000 00000000 00000000 00000000 | ................ 0280: 00000000 00000000 00000000 00000000 | ................ 0290: 00000000 00000000 00000000 00000000 | ................ 02A0: 00000000 00000000 00000000 00000000 | ................ 02B0: 00000000 00000000 00000000 00000000 | ................ 02C0: 00000000 00000000 00000000 00000000 | ................ 02D0: 00000000 00000000 00000000 00000000 | ................ 02E0: 00000000 00000000 00000000 00000000 | ................ 02F0: 00000000 00000000 00000000 00000000 | ................ 0300: 00000000 00000000 00000000 00000000 | ................ 0310: 00000000 00000000 00000000 00000000 | ................ 0320: 00000000 00000000 00000000 00000000 | ................ 0330: 00000000 00000000 00000000 00000000 | ................ 0340: 00000000 00000000 00000000 00000000 | ................ 0350: 00000000 00000000 00000000 00000000 | ................ 0360: 00000000 00000000 00000000 00000000 | ................ 0370: 00000000 00000000 00000000 00000000 | ................ 0380: 00000000 00000000 00000000 00000000 | ................ 0390: 00000000 00000000 00000000 00000000 | ................ 03A0: 00000000 00000000 00000000 00000000 | ................ 03B0: 00000000 00000000 00000000 00000000 | ................ 03C0: 00000000 00000000 00000000 00000000 | ................ 03D0: 00000000 00000000 00000000 00000000 | ................ 03E0: 00000000 00000000 00000000 00000000 | ................ 03F0: 00000000 00000000 00000000 00000000 | ................ 0400: 00000000 00000000 00000000 00000000 | ................ 0410: 00000000 00000000 00000000 00000000 | ................ 0420: 00000000 00000000 00000000 00000000 | ................ 0430: 00000000 00000000 00000000 00000000 | ................ 0440: 00000000 00000000 00000000 00000000 | ................ 0450: 00000000 00000000 00000000 00000000 | ................ 0460: 00000000 00000000 00000000 00000000 | ................ 0470: 00000000 00000000 00000000 00000000 | ................ 0480: 00000000 00000000 00000000 00000000 | ................ 0490: 00000000 00000000 00000000 00000000 | ................ 04A0: 00000000 00000000 00000000 00000000 | ................ 04B0: 00000000 00000000 00000000 00000000 | ................ 04C0: 00000000 00000000 00000000 00000000 | ................ 04D0: 00000000 00000000 00000000 00000000 | ................ 04E0: 00000000 00000000 00000000 00000000 | ................ 04F0: 00000000 00000000 00000000 00000000 | ................ 0500: 00000000 00000000 00000000 00000000 | ................ 0510: 00000000 00000000 00000000 00000000 | ................ 0520: 00000000 00000000 00000000 00000000 | ................ 0530: 00000000 00000000 00000000 00000000 | ................ 0540: 00000000 00000000 00000000 00000000 | ................ 0550: 00000000 00000000 00000000 00000000 | ................ 0560: 00000000 00000000 00000000 00000000 | ................ 0570: 00000000 00000000 00000000 00000000 | ................ 0580: 00000000 00000000 00000000 00000000 | ................ 0590: 00000000 00000000 00000000 00000000 | ................ 05A0: 00000000 00000000 00000000 00000000 | ................ 05B0: 00000000 00000000 00000000 00000000 | ................ 05C0: 00000000 00000000 00000000 00000000 | ................ 05D0: 00000000 00000000 00000000 00000000 | ................ 05E0: 00000000 00000000 00000000 00000000 | ................ 05F0: 00000000 00000000 00000000 00000000 | ................ 0600: 00000000 00000000 00000000 00000000 | ................ 0610: 00000000 00000000 00000000 00000000 | ................ 0620: 00000000 00000000 00000000 00000000 | ................ 0630: 00000000 00000000 00000000 00000000 | ................ 0640: 00000000 00000000 00000000 00000000 | ................ 0650: 00000000 00000000 00000000 00000000 | ................ 0660: 00000000 00000000 00000000 00000000 | ................ 0670: 00000000 00000000 00000000 00000000 | ................ 0680: 00000000 00000000 00000000 00000000 | ................ 0690: 00000000 00000000 00000000 00000000 | ................ 06A0: 00000000 00000000 00000000 00000000 | ................ 06B0: 00000000 00000000 00000000 00000000 | ................ 06C0: 00000000 00000000 00000000 00000000 | ................ 06D0: 00000000 00000000 00000000 00000000 | ................ 06E0: 00000000 00000000 00000000 00000000 | ................ 06F0: 00000000 00000000 00000000 00000000 | ................ 0700: 00000000 00000000 00000000 00000000 | ................ 0710: 00000000 00000000 00000000 00000000 | ................ 0720: 00000000 00000000 00000000 00000000 | ................ 0730: 00000000 00000000 00000000 00000000 | ................ 0740: 00000000 00000000 00000000 00000000 | ................ 0750: 00000000 00000000 00000000 00000000 | ................ 0760: 00000000 00000000 00000000 00000000 | ................ 0770: 00000000 00000000 00000000 00000000 | ................ 0780: 00000000 00000000 00000000 00000000 | ................ 0790: 00000000 00000000 00000000 00000000 | ................ 07A0: 00000000 00000000 00000000 00000000 | ................ 07B0: 00000000 00000000 00000000 00000000 | ................ 07C0: 00000000 00000000 00000000 00000000 | ................ 07D0: 00000000 00000000 00000000 00000000 | ................ 07E0: 00000000 00000000 00000000 00000000 | ................ 07F0: 00000000 00000000 00000000 00000000 | ................ [Just4Fun]$ write 1 4 Write Multi Block [0x1:4] [Just4Fun]$ read 1 4 Read Multi Block [0x1:4] 0000: 00000001 00020003 00040005 00060007 | ................ 0010: 00080009 000A000B 000C000D 000E000F | ................ 0020: 00100011 00120013 00140015 00160017 | ................ 0030: 00180019 001A001B 001C001D 001E001F | ................ 0040: 00200021 00220023 00240025 00260027 | . .!.".#.$.%.&.' 0050: 00280029 002A002B 002C002D 002E002F | .(.).*.+.,.-.../ 0060: 00300031 00320033 00340035 00360037 | .0.1.2.3.4.5.6.7 0070: 00380039 003A003B 003C003D 003E003F | .8.9.:.;.<.=.>.? 0080: 00400041 00420043 00440045 00460047 | .@.A.B.C.D.E.F.G 0090: 00480049 004A004B 004C004D 004E004F | .H.I.J.K.L.M.N.O 00A0: 00500051 00520053 00540055 00560057 | .P.Q.R.S.T.U.V.W 00B0: 00580059 005A005B 005C005D 005E005F | .X.Y.Z.[.\.].^._ 00C0: 00600061 00620063 00640065 00660067 | .`.a.b.c.d.e.f.g 00D0: 00680069 006A006B 006C006D 006E006F | .h.i.j.k.l.m.n.o 00E0: 00700071 00720073 00740075 00760077 | .p.q.r.s.t.u.v.w 00F0: 00780079 007A007B 007C007D 007E007F | .x.y.z.{.|.}.~.. 0100: 00800081 00820083 00840085 00860087 | ................ 0110: 00880089 008A008B 008C008D 008E008F | ................ 0120: 00900091 00920093 00940095 00960097 | ................ 0130: 00980099 009A009B 009C009D 009E009F | ................ 0140: 00A000A1 00A200A3 00A400A5 00A600A7 | ................ 0150: 00A800A9 00AA00AB 00AC00AD 00AE00AF | ................ 0160: 00B000B1 00B200B3 00B400B5 00B600B7 | ................ 0170: 00B800B9 00BA00BB 00BC00BD 00BE00BF | ................ 0180: 00C000C1 00C200C3 00C400C5 00C600C7 | ................ 0190: 00C800C9 00CA00CB 00CC00CD 00CE00CF | ................ 01A0: 00D000D1 00D200D3 00D400D5 00D600D7 | ................ 01B0: 00D800D9 00DA00DB 00DC00DD 00DE00DF | ................ 01C0: 00E000E1 00E200E3 00E400E5 00E600E7 | ................ 01D0: 00E800E9 00EA00EB 00EC00ED 00EE00EF | ................ 01E0: 00F000F1 00F200F3 00F400F5 00F600F7 | ................ 01F0: 00F800F9 00FA00FB 00FC00FD 00FE00FF | ................ 0200: 01000101 01020103 01040105 01060107 | ................ 0210: 01080109 010A010B 010C010D 010E010F | ................ 0220: 01100111 01120113 01140115 01160117 | ................ 0230: 01180119 011A011B 011C011D 011E011F | ................ 0240: 01200121 01220123 01240125 01260127 | . .!.".#.$.%.&.' 0250: 01280129 012A012B 012C012D 012E012F | .(.).*.+.,.-.../ 0260: 01300131 01320133 01340135 01360137 | .0.1.2.3.4.5.6.7 0270: 01380139 013A013B 013C013D 013E013F | .8.9.:.;.<.=.>.? 0280: 01400141 01420143 01440145 01460147 | .@.A.B.C.D.E.F.G 0290: 01480149 014A014B 014C014D 014E014F | .H.I.J.K.L.M.N.O 02A0: 01500151 01520153 01540155 01560157 | .P.Q.R.S.T.U.V.W 02B0: 01580159 015A015B 015C015D 015E015F | .X.Y.Z.[.\.].^._ 02C0: 01600161 01620163 01640165 01660167 | .`.a.b.c.d.e.f.g 02D0: 01680169 016A016B 016C016D 016E016F | .h.i.j.k.l.m.n.o 02E0: 01700171 01720173 01740175 01760177 | .p.q.r.s.t.u.v.w 02F0: 01780179 017A017B 017C017D 017E017F | .x.y.z.{.|.}.~.. 0300: 01800181 01820183 01840185 01860187 | ................ 0310: 01880189 018A018B 018C018D 018E018F | ................ 0320: 01900191 01920193 01940195 01960197 | ................ 0330: 01980199 019A019B 019C019D 019E019F | ................ 0340: 01A001A1 01A201A3 01A401A5 01A601A7 | ................ 0350: 01A801A9 01AA01AB 01AC01AD 01AE01AF | ................ 0360: 01B001B1 01B201B3 01B401B5 01B601B7 | ................ 0370: 01B801B9 01BA01BB 01BC01BD 01BE01BF | ................ 0380: 01C001C1 01C201C3 01C401C5 01C601C7 | ................ 0390: 01C801C9 01CA01CB 01CC01CD 01CE01CF | ................ 03A0: 01D001D1 01D201D3 01D401D5 01D601D7 | ................ 03B0: 01D801D9 01DA01DB 01DC01DD 01DE01DF | ................ 03C0: 01E001E1 01E201E3 01E401E5 01E601E7 | ................ 03D0: 01E801E9 01EA01EB 01EC01ED 01EE01EF | ................ 03E0: 01F001F1 01F201F3 01F401F5 01F601F7 | ................ 03F0: 01F801F9 01FA01FB 01FC01FD 01FE01FF | ................ 0400: 02000201 02020203 02040205 02060207 | ................ 0410: 02080209 020A020B 020C020D 020E020F | ................ 0420: 02100211 02120213 02140215 02160217 | ................ 0430: 02180219 021A021B 021C021D 021E021F | ................ 0440: 02200221 02220223 02240225 02260227 | . .!.".#.$.%.&.' 0450: 02280229 022A022B 022C022D 022E022F | .(.).*.+.,.-.../ 0460: 02300231 02320233 02340235 02360237 | .0.1.2.3.4.5.6.7 0470: 02380239 023A023B 023C023D 023E023F | .8.9.:.;.<.=.>.? 0480: 02400241 02420243 02440245 02460247 | .@.A.B.C.D.E.F.G 0490: 02480249 024A024B 024C024D 024E024F | .H.I.J.K.L.M.N.O 04A0: 02500251 02520253 02540255 02560257 | .P.Q.R.S.T.U.V.W 04B0: 02580259 025A025B 025C025D 025E025F | .X.Y.Z.[.\.].^._ 04C0: 02600261 02620263 02640265 02660267 | .`.a.b.c.d.e.f.g 04D0: 02680269 026A026B 026C026D 026E026F | .h.i.j.k.l.m.n.o 04E0: 02700271 02720273 02740275 02760277 | .p.q.r.s.t.u.v.w 04F0: 02780279 027A027B 027C027D 027E027F | .x.y.z.{.|.}.~.. 0500: 02800281 02820283 02840285 02860287 | ................ 0510: 02880289 028A028B 028C028D 028E028F | ................ 0520: 02900291 02920293 02940295 02960297 | ................ 0530: 02980299 029A029B 029C029D 029E029F | ................ 0540: 02A002A1 02A202A3 02A402A5 02A602A7 | ................ 0550: 02A802A9 02AA02AB 02AC02AD 02AE02AF | ................ 0560: 02B002B1 02B202B3 02B402B5 02B602B7 | ................ 0570: 02B802B9 02BA02BB 02BC02BD 02BE02BF | ................ 0580: 02C002C1 02C202C3 02C402C5 02C602C7 | ................ 0590: 02C802C9 02CA02CB 02CC02CD 02CE02CF | ................ 05A0: 02D002D1 02D202D3 02D402D5 02D602D7 | ................ 05B0: 02D802D9 02DA02DB 02DC02DD 02DE02DF | ................ 05C0: 02E002E1 02E202E3 02E402E5 02E602E7 | ................ 05D0: 02E802E9 02EA02EB 02EC02ED 02EE02EF | ................ 05E0: 02F002F1 02F202F3 02F402F5 02F602F7 | ................ 05F0: 02F802F9 02FA02FB 02FC02FD 02FE02FF | ................ 0600: 03000301 03020303 03040305 03060307 | ................ 0610: 03080309 030A030B 030C030D 030E030F | ................ 0620: 03100311 03120313 03140315 03160317 | ................ 0630: 03180319 031A031B 031C031D 031E031F | ................ 0640: 03200321 03220323 03240325 03260327 | . .!.".#.$.%.&.' 0650: 03280329 032A032B 032C032D 032E032F | .(.).*.+.,.-.../ 0660: 03300331 03320333 03340335 03360337 | .0.1.2.3.4.5.6.7 0670: 03380339 033A033B 033C033D 033E033F | .8.9.:.;.<.=.>.? 0680: 03400341 03420343 03440345 03460347 | .@.A.B.C.D.E.F.G 0690: 03480349 034A034B 034C034D 034E034F | .H.I.J.K.L.M.N.O 06A0: 03500351 03520353 03540355 03560357 | .P.Q.R.S.T.U.V.W 06B0: 03580359 035A035B 035C035D 035E035F | .X.Y.Z.[.\.].^._ 06C0: 03600361 03620363 03640365 03660367 | .`.a.b.c.d.e.f.g 06D0: 03680369 036A036B 036C036D 036E036F | .h.i.j.k.l.m.n.o 06E0: 03700371 03720373 03740375 03760377 | .p.q.r.s.t.u.v.w 06F0: 03780379 037A037B 037C037D 037E037F | .x.y.z.{.|.}.~.. 0700: 03800381 03820383 03840385 03860387 | ................ 0710: 03880389 038A038B 038C038D 038E038F | ................ 0720: 03900391 03920393 03940395 03960397 | ................ 0730: 03980399 039A039B 039C039D 039E039F | ................ 0740: 03A003A1 03A203A3 03A403A5 03A603A7 | ................ 0750: 03A803A9 03AA03AB 03AC03AD 03AE03AF | ................ 0760: 03B003B1 03B203B3 03B403B5 03B603B7 | ................ 0770: 03B803B9 03BA03BB 03BC03BD 03BE03BF | ................ 0780: 03C003C1 03C203C3 03C403C5 03C603C7 | ................ 0790: 03C803C9 03CA03CB 03CC03CD 03CE03CF | ................ 07A0: 03D003D1 03D203D3 03D403D5 03D603D7 | ................ 07B0: 03D803D9 03DA03DB 03DC03DD 03DE03DF | ................ 07C0: 03E003E1 03E203E3 03E403E5 03E603E7 | ................ 07D0: 03E803E9 03EA03EB 03EC03ED 03EE03EF | ................ 07E0: 03F003F1 03F203F3 03F403F5 03F603F7 | ................ 07F0: 03F803F9 03FA03FB 03FC03FD 03FE03FF | ................ [Just4Fun]$

4개의 블럭에 대한 연속 쓰기 동작의 전체 결과는 위와 같이 확인 되었다. 전 영역에 대한 쓰기 동작이 제대로 수행되었음을 확인하였다.

microSD.zip