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A random signal generation method for microcontrollers with DACs

Abstrakt

A new method of noise generation based on software implementation of a 7-bit LFSR based on a common polynomial PRBS7 using microcontrollers equipped with internal ADCs and DACs and a microcontroller noise generator structure are proposed in the paper. Two software applications implementing the method: written in ANSI C and based on the LUT technique and written in AVR Assembler are also proposed. In the method the ADC results are used to reseed the LFSR after its each full work cycle, what improves randomness of generated data, which results in a greater similarity of the generated random signal to white noise, what was confirmed by the results of experimental research. The noise generator uses only the internal devices of the microcontroller, hence the proposed solution does not introduce hardware redundancy to the system.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Metrology and Measurement Systems nr 25, strony 675 - 687,
ISSN: 0860-8229
Język:
angielski
Rok wydania:
2018
Opis bibliograficzny:
Czaja Z., Kowalewski M.: A random signal generation method for microcontrollers with DACs// Metrology and Measurement Systems. -Vol. 25, nr. 4 (2018), s.675-687
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.24425/mms.2018.124880

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