Abstract: This paper introduces the hierarchical structure of USB drivers and gives the implementation of a camera driver for Pixart\'s PAC207-BCA chip based on the ARM platform. Combined with a specific development example, the main function implementation of the camera driver for the PAC207-BCA chip is analyzed. Finally, the cross-compiled driver module is loaded on the Embest S3CEB2410 development board, and the main structure of the upper-level test program is given.
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