FX2LP is a 51 microcontroller with USB 2.0 high speed. I think the most impressive feature is its USB IP design. The main frequency of the 51 microcontroller is not high, making it difficult to support USB 480Mbps high-speed communication. Therefore, this chip is designed with an IP called GPIF, which allows high-speed data transfer directly between GPIO and USB without CPU intervention. Moreover, GPIF can be programmed and configured to support different protocols, making it flexible and efficient. You can still see this chip in many places today, typically in scenarios involving data transfer between FPGA and PC (in fact, a FX2LP chip is used for high-speed transfer between DSLogic and PC), making it a classic application for logic analyzers.
With the development of the open-source community Sigrok, FX2LP can now fully run the open-source firmware fx2lafw, working in conjunction with the open-source host software PulseView. Currently, most logic analyzers based on FX2LP use Saleae’s pirated firmware along with pirated host software Logic. For an open-source enthusiast, this is a bit uncomfortable. In fact, PulseView’s functionality is already very powerful, not inferior to current commercial host software, supporting countless LA hardware and over 100 protocol analyses, easy to use, and most importantly, it is open-source. You can modify the code at any time to add new protocol support or new features.
All materials related to nanoDLA have been organized on GitHub, including user manuals, hardware schematics, firmware source code, programming scripts, etc. Please feel free to use them.
GitHub below. If the network is not good, Old Yu has also provided a complete copy for everyone.Baidu Netdisk:
Link: https://pan.baidu.com/s/1BIJEP4NMNZNdAwlCYWs9Aw
Extraction code: vx2c
References
https://www.cypress.com/products/ez-usb-fx2lp
https://github.com/wuxx/nanoDLA
This article is authorized and originally published by the author muselab. Interested friends can follow the blog muselab and the bilibili account:Main Sound-x
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