Abstract
Logical signal analyzer on FPGA - an electronic device that can record and display sequences of digital and analog signals. The task of creating a functional and universal logic analyzer that has the ability to simultaneously capture and analyze 24 digital and 8 analog signals is considered. The ability to connect a display for offline operation with the device, while this factor should not significantly affect the price. The mobility and versatility of the device is ensured thanks to the installed Wi-Fi module, with a server on the board, for remote access. An Ethernet protocol has also been implemented for the ability to work with speeds up to 1 Gbit / s, which will allow you to receive an infinite amount of data without delay and write directly to the computer's memory. The protection of the digital and analog parts from voltage surges, pulse current increase, which could lead to the failure of the circuit and the combustion of the inputs to the processor, has been made. A logic signal analyzer can be used to test and debug digital electronic circuits, for example, when designing computer components and electronic control devices. Unlike oscilloscopes, logic analyzers have much more inputs, but they are not precision and can not be used in research, but this is not necessary for an engineer. In this work, the use of FPGAs is due to the need to ensure a high response rate of the device to a signal change, a programmable integrated matrix is responsible for this. And the other part of the chip with the ARM Cortex A9 processor, which runs the Linux operating system, is responsible for working with peripherals, prioritizing with the simultaneous work of several users. It is possible to modify the device and obtain a fully autonomous and independent device: with its own monitor, information input and output system. There are also possible variations in the construction of the whole test bench, which can not only receive data, but also control processes.
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License
This work is openly licensed — share and adapt freely with attribution to the authors and the journal. View license terms ↗
Copyright (c) 2020 Максим Денисович Алдохін (Автор)
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