Description: Ultrasonic module drivers can take advantage of cross-compilation tools compiled into the SO file, run the ARM development board, along with test code
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File list (Check if you may need any files):
HCSR04\driver
......\......\HCSR04.c
......\......\Makefile
......\......\define.h
......\user
......\....\Makefile
......\....\test_hc.c
HCSR04