update hcsr04.cpp by changing 20000 to 2000
Dependencies: Stepper mbed SDFileSystem Ultrasonic PinDetect millis
Diff: millis.lib
- Revision:
- 8:3f4d78017fd9
- Parent:
- 5:938a135613d9
update hcsr04.cpp by changing 20000 to 2000
Dependencies: Stepper mbed SDFileSystem Ultrasonic PinDetect millis