External Flash Filesystem for Sensor Nodes with sparse Resources

Stephan Lehmann; Stephan Rein; Clemens Gühmann

4th International ICST Mobile Multimedia Communications Conference

Research Article

External Flash Filesystem for Sensor Nodes with sparse Resources

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@INPROCEEDINGS{10.4108/ICST.MOBIMEDIA2008.4027,
    author={Stephan Lehmann and Stephan Rein and Clemens G\'{y}hmann},
    title={External Flash Filesystem for Sensor Nodes with sparse Resources},
    proceedings={4th International ICST Mobile Multimedia Communications Conference},
    publisher={ICST},
    proceedings_a={MOBIMEDIA},
    year={2010},
    month={5},
    keywords={SD-card Camera sensor Signal-controller},
    doi={10.4108/ICST.MOBIMEDIA2008.4027}
}

Stephan Lehmann
Stephan Rein
Clemens Gühmann
Year: 2010
External Flash Filesystem for Sensor Nodes with sparse Resources
MOBIMEDIA
ICST
DOI: 10.4108/ICST.MOBIMEDIA2008.4027

Stephan Lehmann¹^,*, Stephan Rein¹^,*, Clemens Gühmann¹^,*

1: Wavelet Application Group, Department of Energy and Automation Technology, Chair of Electronic Measurement and Diagnostic Technology, Technische Universität Berlin.

*Contact email: stephan.lehmann@tu-berlin.de, stephan.rein@tu-berlin.de, clemens.guehmann@tu-berlin.de

Abstract

This paper describes a free filesystem for external flash memory to be employed with low-complexity sensor nodes. The system uses a standard secure digital (SD) card that can be easily connected to the serial port interface (SPI) or any general input/output port of the sensor’s processor. The filesystem is evaluated with SD- cards used in SPI mode and achieves an average random write throughput of about 40 kByte/sec. For random write access throughputs larger than 400 kByte/sec are achieved. The filesystem allows for storage of large amounts of sensor or program data and can assist more memory expensive algorithms. It requires 7 kByte of program memory and about 570 Bytes of RAM.

Keywords: SD-card Camera sensor Signal-controller

Published: 2010-05-16
Publisher: ICST
Modified: 2010-05-16

: http://dx.doi.org/10.4108/ICST.MOBIMEDIA2008.4027