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Author: Shawon Shahryiar
Last Updated: 2016-05-29
Package Version: 1.0.0.0
Category: Measurement
Downloaded: 913 times
Not followed.
License: MIT license
INT0 pin is gated with timer 0. TMR0 starts when INT0 pin is high (start of the echo pulse from HC-SR04) and is read when INT0 pin is low (invoked by the falling edge interrupt caused by the end of echo from HC-SR04). Thus we get pulse width in microseconds. 16 such time samples are taken to make the measurements accurate.
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| DOWNLOAD LINK | RELATED COMPILER | CONTAINS |
|---|---|---|
| 1464499770_hc_sr04_ultrason_mikroc_8051.rar [41.16KB] | mikroC PRO for 8051 |
|
HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt
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