A optimized Rijndael algorithm which can execute effectively on stm32f103 processor is presented. firstly, a theoretical analysis of the Rijndael algorithm and code optimization are carried out, and then simulation re...
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ISBN:
(纸本)9783037858431
A optimized Rijndael algorithm which can execute effectively on stm32f103 processor is presented. firstly, a theoretical analysis of the Rijndael algorithm and code optimization are carried out, and then simulation results of the optimized algorithm on stm32f103 processor are given. Subsequently, the conclusions as follow can be drawn. The cycles of key schedule for decryption are more than those for encryption. Key schedule for decryption demands larger memory than that for encryption. Decryption is slower than encryption. At last, the experiment shows that the algorithm can be executed on stm32f103 processor efficiently.
stm32f103 microprocessor as the core, this paper introduces the research design of power acquisition in the smart grid. This design can realize real-time acquisition and analysis of power, has the characteristics of h...
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ISBN:
(纸本)9783038353140
stm32f103 microprocessor as the core, this paper introduces the research design of power acquisition in the smart grid. This design can realize real-time acquisition and analysis of power, has the characteristics of high precision and little error. The power acquisition design is also used in the chip ATT7022, simplify the design of the circuit. Chip ATT7022 collected can be voltage, current reactive power and power factor and other parameters were calculated. The microprocessor stm32f103 mainly analyze the calculation of the data. If the data is not correct, microprocessor stm32f103 then control circuit is revised accordingly. Practice shows that the intelligent power acquisition system meet the requirements of the smart grid.
In order to improve the real-time and accuracy of capsule endoscope image transmission system, and reduce the system volume, this paper proposes a low-power low-cost wireless image transmission system based on So C ch...
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In order to improve the real-time and accuracy of capsule endoscope image transmission system, and reduce the system volume, this paper proposes a low-power low-cost wireless image transmission system based on So C chips and stm32f103 embedded micro controller. We adopted the CMOS camera module OV2640 with JPEG compressed image processing and 2.4 GHz wireless transceiver chip n Rf24LE1 for image acquisition and wireless transmission, using stm32f103C8 to control the wireless chip n Rf24L01 and transmit to the PC via USB interface. This paper analyzed the chips’ structures and functions, and introduced the hardware structure and software scheme of the system. The experimental results showed that the system can get clear and stable images.
The paper outlines the configuration and the hardware system architecture of the quad-rotor aircraft, describes the overall design of the hardware system of the quad-rotor aircraft, expounds the design method of each ...
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The paper outlines the configuration and the hardware system architecture of the quad-rotor aircraft, describes the overall design of the hardware system of the quad-rotor aircraft, expounds the design method of each subsystem of the hardware system of the quad-rotor aircraft, and finally gets the complete hardware system of the quad-rotor aircraft by joining the design results of subsystems.
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