Difference between revisions of "Matrix - Ultrasonic Ranger"
From FriendlyELEC WiKi
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Copy your compiled bin to your board and you are ready to go. | Copy your compiled bin to your board and you are ready to go. | ||
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Revision as of 08:16, 7 August 2015
Contents
1 介绍
TODO
2 特性
- 特性1
- 特性2
3 How To
3.1 Connection
- Connect to Tiny4412 SDK (1506)
- GND: Ground
- VCC: 5V
- ECHO: GPIO PIN1
- TRIG: GPIO PIN2
3.2 Code Sample in C Under Linux
#include <stdio.h> #include <unistd.h> #include "libfahw.h" int main(int argc, char ** argv) { int distance = -1; int echoPin = TINY4412_GPIO_PIN1; int triggerPin = TINY4412_GPIO_PIN2; if (Hcsr04Init(echoPin, triggerPin) == -1) { printf("Fail to init hcsr04\n"); } if (Hcsr04Read(&distance)==0 && distance != -1) { printf("Get distance: %3d cm\n", distance); } else { printf("Faid to get distance\n"); } Hcsr04DeInit(); return 0; }
3.3 Compile and Run
git clone http://github.com/friendlyarm/fa-hardware.git cd fa-hardware cd demo cd matrix-ultrasonic_ranger make
Copy your compiled bin to your board and you are ready to go.
