ALFAT-OM-337 GHI Electronics, ALFAT-OM-337 Datasheet - Page 25

• Manufacturer Part Number: ALFAT-OM-337
• Description: Memory IC Development Tools ALFAT USB / SD to UART / SPI OEM BOARD
• Manufacturer: GHI Electronics

Specifications of ALFAT-OM-337

• Rohs: yes
• Product: SD OEM Board
• Tool Is For Evaluation Of: SD, SDHC, MMC Cards, USB drives
• Memory Type: Flash
• Operating Supply Voltage: 3.3 V
• Description/function: OEM board offers a seamless way to access files on SD & MMC cards and on USB memory drives
• Interface Type: I2C, SPI, UART, USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: GHI-ALFAT-OM-337

GHI Electronics
Rev. 1.13
K- Get Free Size
@ - Initialize Files and Folders List
Gets media total remaining free size. Note this command may take several seconds for
calculations to finish depending on the media size.
To list files/folders at a certain path, first use this command to initialize the list counter,
then call N command to get a directory entry. Every time N command is called, ALFAT
retrieves an entry of the list.
No other commands should be called between the N commands, otherwise the user
should start over and call @ command.
Format
Example K
Format
Example
K
!00
$ssssssssssssssss
!00
!00
$00000000717F0000
!00
@
!00
@<SP>
!00
<SP>X<LF>
<SP>U1:<LF>
<SP>
<LF>
<LF>
<LF>
<LF>
<LF>
M:\TEST\TMP
full path
<LF>
<LF>
<LF>
<LF>
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Full path: the full path needed to initialize
included drive name.
Initialize folder M:\TEST\TMP
X: Drive name, included:
M: Memory Card drive
U0: USB Flash drive 0
U1: USB Flash drive 1
ssssssssssssssss 8 bytes in HEX
free size in drive.
First !00 is sent before starting
calculations
Size Available on USB Flash drive 0
is 1904148480 bytes
ALFAT SoC Processor
ALFAT Command Set
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