U disk reader module USB118 in data acquisition applications

We know, U disk is a generic mass storage. U replace the floppy disk has been completely and become a necessity in our work. So many products need to read or save the data, the majority of U-disk approach. SCM system can be directly used as the mobile U disk storage, and facilitate the use of WINDOWS operating systems to exchange data.

 

And U disk reader module is widely used in desktop and portable instruments and meters, electronic medical instrumentation, equipment black box data recording attendance, petroleum instruments, textile machinery, hydrological monitoring, paperless printer, data collection and other fields Comparison of current electronic designs a wide range of electronic firms in Shaanxi's USB118A Yubo program, Xi'an Datai electronic USB118AD program.

 

R & D personnel in all aspects of these two options were compared: Create files and directories, open an already created files and directories, read from the file and specify a location specified length of data, writing data to the specified file the specified address list directory the files and directories, delete files and directories, query U disk capacity, and so the same command to complete.

 

SL811 is a Cypress USB Host chip companies, most of the United States Cypress development kit provided by the company's source code, a large number for the school graduation project, learning situations, because the reference code, there are a lot BUG, the general staff of the USB protocol is not familiar with the case difficult to amend, USB118A module is based on the development of the program finished, a large number of amendments to the original code provided BUG.

 

However, because this program is USB1.1 standard, the rate is very low, the other for more than 1G U disk almost no recognition, so that from 2008 the product has been discontinued. ARM + USB2.0 program USB118AD modules for industrial products, for industrial equipment, instruments and other bulk products, the user is suitable for industrial environments to select the stability of the program, USB118AD the preferred solution for high-end users.