The AK-SDFS-UART board allows you to read/write data from/to a micro SD card using a serial TTL port (UART). The board supports the FAT file system so the files can be read back from the micro SD on a PC/MAC.

Using a simple protocol (libraries included) you can read/write 4 files concurrently, in text or binary mode. Using only four wires (TX, RX, VCC and GND) you can read and write from the SD using very small microprocessors, even 8-bit ones. The baudrate can be adjusted from 9600 up to 460800 bps.

We have prepared a library that encapsulates the communication protocol and the source code can be downloaded. There is also an Arduino sketch demonstration available for download.

The AK-SDFS-UART is perfect to be used as a data logger, for sensors and debug information. It supports micro SD and SDHC cards.

We also have a standard SD version of this board.

Features

  • Only four wires to get a working FAT File System
  • Powered from 3.3V external supply
  • All I/O pins are 5V tolerant
  • Operates on 4 files concurrently
  • RTC supported (time and date command has to be given at every power up)
  • Supports all file commands as Open, Create, Exist, Close, Write, Flush, Read, Size
  • Supports long file names
  • Supports directory tree listing
  • Commands to create and delete directories
  • Supports binary files
  • Uses a single and secure UART protocol. Source code examples are provided
  • Breadboard-ready
  • Supports firmware upgrade

Documents

Software

Additional information

Weight 0.070 kg
Dimensions 20 × 22 × 20 mm

Comments


Verified Purchaser
Richard Payne
1 year 1 month ago

Sorry I mean USB MSC protocol, thanks.

Verified Purchaser
Richard Payne
1 year 1 month ago

(1) What version FATFS, it look like 2011 not 2021 (R014B)
(2) Any suggestion how to stream SDCARD to MSC via UART?

Support
1 year 1 month ago

Hello Richard,

1) I’ve have to check this. If you mean Chan’s FATFS, I’m not sure we are using it on this product.

2) The AK-SDFS-UART has its own protocol. I guess your firmware has to act as a translator between MSC commands and the board’s protocol.

Member
Wolfzi99
3 years 3 months ago

Hello
I bought this module and it doesn’t work!!!
1. I use an Atmega1284 (UART0, 9600 Baud) to control the module
2. When I insert an SD card, the DISK LED does not light up
3. I don’t get feedback from the module when I send a command.
4. I use CRC16-CCITT as a checksum, okay?
Can the module be defective?
Or what am I doing wrong?

Regards
Wolfgang

Support
3 years 3 months ago

Hi,
Ok, let’s figure this out. But first I wanted to ask if you can use the forum (https://forum.artekit.eu/) for this kind of support, since the comment section for the product is not the appropriate place.

Remember to post as much information as possible: a simple code example of what you are doing and seeing problems, a schematic of your connections, also a picture if possible, etc.

Member
Wolfzi99
3 years 3 months ago

Hi Ivan,
okay, will do!

Regards
Wolfgang

Member
Wolfzi99
3 years 3 months ago

Hi,
what means CRC16 exactly?
Which data should I take to calculate?
Regards
Wolfgang

Support
3 years 3 months ago

Hi,
The CRC16 is calculated from all the fields (Preamble, Command, File handle / opt, Data length and Data) using the function described in the documentation (link is here above as “User manual).

Member
Wolfzi99
3 years 3 months ago

Hi Ivan,
thank you for your answer. I think that will helps me!
Regards
Wolfgang

Guest
Tasos
5 years 2 months ago

Hello, are there any libraries/guide in C for interfacing the SD card Shield with ATMEGA16L MCU?
Thank you

Support
5 years 2 months ago

There is the protocol library, written in C, that is generic (the link is up here in the description). Since it’s microcontroller-agnostic, you have to provide 3 functions: one for serial data transmission, one for serial data reception and one implementing a delay.

 

Share this Product

AK-SDFS-UART - SD File System Through UART

The AK-SDFS-UART allows you to write and read files from a standard microSD with FAT file system using an UART.

24.90

In stock

Category Tags , ,

Accepting all credit cards and wire transfers
Secure payments with Stripe and PayPal

Need help? Drop a line in our support forum.