FPGA high-speed USB interface data reading method
A USB interface and data technology, applied in the field of USB interface, can solve the problems that large files larger than 4GB cannot be read, NTFS file system is not supported, and the average speed of chip data transmission is slow, etc., so as to facilitate upgrade processing, receive data in real time, Effects that facilitate image processing
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[0039] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.
[0040] see figure 1 As shown, it is a schematic diagram of the device for reading USB device data by FPGA of the present invention. The module is stored in the ARM processor, and the DDR module is connected with the FPGA.
[0041] The data reading module is connected with the USB peripherals for storing data from the USB peripherals. After the user starts the data reading function, the data reading module opens the specified file from the USB peripherals according to the predetermined file path. , to obtain the file size information, and read in sequence according to the preset data block size until the data is read and the file is closed.
[0042] The control module controls the ARM processor to read and forward the data in the USB peripherals. After entering the data forwarding work, the control module...
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