罗姆传感器评估套件-颜色传感器2

wudianjun2001 · 发表于 2018-10-30 09:13:37

下载颜色传感器用的库文件

接下来，和地磁传感器时一样，应安装使用传感器的库。通过颜色传感器说明页面下方的软件下载来下载库文件。

BH1749NUC.zip (4.11 KB, 下载次数: 0)

2018-10-30 09:12 上传

点击文件名下载附件

图2 颜色传感器用库文件的下载

文件下载完成后，打开Arduino IDE添加库，选择下载的文件"BH1745NUC.zip"，颜色传感器的动作准备即告完成。

照片4　添加库"BH1745NUC"

顺利添加库后，可以在"sketch示例"及"使用库"的栏中确认BH1745NUC的标识。

照片5 BH1745NUC被添加到库

运行颜色传感器的样本程序（sketch）

从sketch示例中，调用BH1745NUC的样本程序。该程序单纯显示颜色传感器获取的值。
※样本程序（sketch）的编译未通过时，可能是Arduino IDE较旧，请用最新的Arduino IDE进行尝试。

BH1745NUC的样本程序（sketch）

Code-Example

/*****************************************************************************

BH1745NUC.ino

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.

******************************************************************************/

#include <Wire.h>

#include <BH1745NUC.h>

BH1745NUC bh1745nuc(BH1745NUC_DEVICE_ADDRESS_39);

void setup() {

byte rc;

Serial.begin(9600);

while (!Serial);

Wire.begin();

rc = bh1745nuc.init();

}

void loop() {

byte rc;

unsigned short rgbc[4];

rc = bh1745nuc.get_val(rgbc);

if (rc == 0) {

Serial.write("BH1745NUC (RED) = ");

Serial.println(rgbc[0]);

Serial.write("BH1745NUC (GREEN) = ");

Serial.println(rgbc[1]);

Serial.write("BH1745NUC (BLUE) = ");

Serial.println(rgbc[2]);

Serial.write("BH1745NUC (CLEAR) = ");

Serial.println(rgbc[3]);

Serial.println();

}

delay(500);

}

照片6 颜色传感器样本程序的运行结果

观看串行监视器中显示的数值，可以看见RED、GREEN、BLUE中增加了CLEAR。这个CLEAR表示可以获取可视光波长强度的值。一边观察串行监视器，一边将带颜色的物体靠近传感器，或者将光靠近传感器，可以发现传感器的值会发生变化。若将传感器遮蔽起来，由于光自身无法进入传感器，CLEAR的值会变小。这种情况下，RGB的数值也会变小，很难进行颜色判别。与此相反，若用彩色LED等照射传感器，则可以检测到超过10000的数值。由此可见，通过彩色LED等进行输入是比较合适的。

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