Research Article
External Flash Filesystem for Sensor Nodes with sparse Resources
@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
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.
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