yjdwbj edited a comment on issue #2276:
URL: https://github.com/apache/incubator-nuttx/issues/2276#issuecomment-735514406
@adamfeuer Thanks your reply, I have a SPI over SD sniffer, and installed it to test, at least the worked for a TOSHIBA 8GB SDHC Memory Card. But instert another KINGMAX 256MB SD Card , it's report like below , looks said the CMD9 failed. But the same equipment ( SPI over SD sniffer and KINGMAX 256M SD Card) that is worked for other STM32 board.
```sh
Registering CDC/ACM serial driver
sam_automount_initialize: Initializing automounter(s)
automount_initialize: lower=0x41e404
sam_cardinserted_internal: Slot 0 inserted: NO
Mounting procfs to /proc
sam_sdinitialize: Initializing SERCOM SPI0
sam_sdinitialize: Successfully initialized SPI0
sam_sdinitialize: Binding SPI0 to MMC/SD slot 0
mmcsd_mediainitialize: Send CMD0
mmcsd_sendcmd: CMD0[00000000] R1=01
mmcsd_mediainitialize: Card is in IDLE state
mmcsd_mediainitialize: Send CMD8
mmcsd_sendcmd: CMD8[000001aa] R1=03 R7=ffffffff
mmcsd_mediainitialize: Send CMD55/ACMD41
mmcsd_sendcmd: CMD55[00000000] R1=01
mmcsd_sendcmd: CMD41[00000000] R1=01
mmcsd_mediainitialize: Identified SD ver1 card
mmcsd_mediainitialize: 0. Send CMD55/ACMD41
mmcsd_sendcmd: CMD55[00000000] R1=01
mmcsd_sendcmd: CMD41[00000000] R1=00
mmcsd_mediainitialize: Get CSD
mmcsd_sendcmd: CMD9[00000000] R1=00
mmcsd_getcardinfo: 0. SPI send returned ff
mmcsd_getcardinfo: 1. SPI send returned fc
mmcsd_getcardinfo: 2. SPI send returned 00
mmcsd_getcardinfo: 3. SPI send returned fc
mmcsd_getcardinfo: 4. SPI send returned 00
mmcsd_getcardinfo: 5. SPI send returned 81
mmcsd_getcardinfo: 6. SPI send returned e4
mmcsd_getcardinfo: 7. SPI send returned 83
mmcsd_getcardinfo: ERROR: Did not find start of block
mmcsd_mediainitialize: ERROR: mmcsd_getcsd(CMD9) failed: -5
sam_sdinitialize: Successfully bound SPI0 to MMC/SD slot 0
Mounting /dev/mmcsd0 to /fat
find_blockdriver: pathname="/dev/mmcsd0"
mmcsd_open: Entry
mmcsd_sendcmd: CMD9[00000000] R1=00
mmcsd_getcardinfo: 0. SPI send returned ff
mmcsd_getcardinfo: 1. SPI send returned fc
mmcsd_getcardinfo: 2. SPI send returned 00
mmcsd_getcardinfo: 3. SPI send returned fc
mmcsd_getcardinfo: 4. SPI send returned 00
mmcsd_getcardinfo: 5. SPI send returned 81
mmcsd_getcardinfo: 6. SPI send returned e4
mmcsd_getcardinfo: 7. SPI send returned 83
mmcsd_getcardinfo: ERROR: Did not find start of block
mmcsd_geometry: ERROR: mmcsd_getcsd returned -5
nx_mount: ERROR: Bind method failed: -19
ERROR: Failed to mount the FAT filesystem: -1 (19)
```
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