Difference between revisions of "Matrix - Sound Sensor"

From FriendlyELEC WiKi
Jump to: navigation, search
(→‎Update Log)
 
(7 intermediate revisions by the same user not shown)
Line 29: Line 29:
 
* This sound sensor functions like a microphone which receives sound waves and convert them to images which show the sound waves' vibration. When it receives a sound wave it will output 1 but cannot measure its strength.  
 
* This sound sensor functions like a microphone which receives sound waves and convert them to images which show the sound waves' vibration. When it receives a sound wave it will output 1 but cannot measure its strength.  
  
 +
 +
==Applications==
 +
===Connect to NanoPi M1===
 +
Refer to the following connection diagram to connect the module to the NanoPi M1:<br>
 +
[[File:Matrix-Sound_Sensor_nanopi_m1.jpg|frameless|600px|Matrix-Sound_Sensor_nanopi_m1]]
 +
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Sound_Sensor || NanoPi M1
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===Connect to NanoPi 2===
 +
Refer to the following connection diagram to connect the module to the NanoPi 2:<br>
 +
[[File:Matrix-Sound_Sensor_nanopi_2.jpg|frameless|600px|Matrix-Sound_Sensor_nanopi_2]]
 +
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Sound_Sensor || NanoPi 2
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===Connect to NanoPi M2 / NanoPi 2 Fire===
 +
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br>
 +
[[File:Matrix-Sound_Sensor_nanopi_m2.jpg|frameless|600px|Matrix-Sound_Sensor_nanopi_m2]]
 +
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Sound_Sensor || NanoPi M2
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===Connect to NanoPC-T2===
 +
Refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
 +
[[File:Matrix-Sound_Sensor_NanoPC-T2.jpg|frameless|600px|Matrix-Sound_Sensor_NanoPC-T2]]
 +
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Sound_Sensor || NanoPC-T2
 +
|-
 +
|S    || Pin15
 +
|-
 +
|V    || Pin29
 +
|-
 +
|G    || Pin30
 +
|}
 +
 +
==Compile & Run Test Program==
 +
Boot your ARM board with Debian and copy the matrix code:
 +
<syntaxhighlight lang="bash">
 +
$ apt-get update && apt-get install git
 +
$ git clone https://github.com/friendlyarm/matrix.git
 +
</syntaxhighlight>
 +
If your cloning is done successfully a "matrix" directory will be generated.
 +
 +
Compile and install Matrix:
 +
<syntaxhighlight lang="bash">
 +
$ cd matrix
 +
$ make && make install
 +
</syntaxhighlight>
 +
 +
Run test program:
 +
<syntaxhighlight lang="bash">
 +
$ matrix-gpio_int
 +
</syntaxhighlight>
 +
Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.<br>
 +
Here is what you should observe:<br>
 +
<syntaxhighlight lang="bash">
 +
Waiting event...
 +
Device[0] value is 1
 +
</syntaxhighlight>
 +
When there is a sound an event will be triggered and detected.
 +
 +
==Code Sample==
 +
This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-gpio_int". Here is its source code:
 +
<syntaxhighlight lang="c">
 +
int main(int argc, char ** argv)
 +
{
 +
    int i, board;
 +
    int retSize = -1;
 +
    char value[ARRAY_SIZE(dev)];
 +
 +
    if ((board = boardInit()) < 0) {
 +
        printf("Fail to init board\n");
 +
        return -1;
 +
    }
 +
   
 +
    if (argc == 2)
 +
        dev[0].pin = atoi(argv[1]);
 +
    system("modprobe "DRIVER_MODULE);
 +
    signal(SIGINT, intHandler);
 +
    if (board == BOARD_NANOPI_T2)
 +
        dev[0].pin = GPIO_PIN(15);
 +
    printf("Use GPIO_PIN(%d)\n", dev[0].pin);
 +
    if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) {
 +
        printf("Fail to init sensor\n");
 +
        goto err;
 +
    }
 +
    printf("Waiting event...\n");
 +
    if ((retSize = sensorRead(devFD, value, ARRAY_SIZE(dev))) == -1) {
 +
        printf("Fail to read sensors\n");
 +
    }
 +
    if (retSize > 0) {
 +
        i = 0;
 +
        for (i=0; i<retSize; i++) {
 +
            printf("Device[%d] value is %d\n", i, value[i]);
 +
        }
 +
    }
 +
    sensorDeinit(devFD);
 +
err:   
 +
    system("rmmod "DRIVER_MODULE);
 +
    return 0;
 +
}
 +
</syntaxhighlight>
 +
For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br>
 +
 +
<!---
 
==Download Matrix Source Code==
 
==Download Matrix Source Code==
 
All the matrix modules' code samples are open source. They are maintained on GitHub - https://github.com/friendlyarm/matrix.git <br>
 
All the matrix modules' code samples are open source. They are maintained on GitHub - https://github.com/friendlyarm/matrix.git <br>
Line 49: Line 185:
 
If this is successful a "matrix" directory will be generated, which will contain all the matrix modules' code samples.
 
If this is successful a "matrix" directory will be generated, which will contain all the matrix modules' code samples.
  
−
==与NanoPi 2连接使用==
+
==Connect to NanoPi 2==
−
===硬件连接===
+
===Hardware Connection===
−
参考下图连接模块Matrix-Sound_Sensor和NanoPi 2：<br>
+
Please refer to the following connection diagram to connect the Matrix-Sound_Sensor to the NanoPi 2:<br>
 
[[File:Matrix-Sound_Sensor_nanopi_2.jpg|frameless|600px|Matrix-Sound_Sensor_nanopi_2]]
 
[[File:Matrix-Sound_Sensor_nanopi_2.jpg|frameless|600px|Matrix-Sound_Sensor_nanopi_2]]
  
−
连接说明：
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 66: Line 202:
 
|}
 
|}
  
−
===编译测试程序===
+
===Compile Test Program===
−
进入Matrix代码仓库，切换到nanopi2分支
+
Please login the matrix hub and enter the nanopi2 branch
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd matrix
 
$ cd matrix
Line 73: Line 209:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
−
编译Matrix配件代码
+
Compile the matrix code
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ make CROSS_COMPILE=arm-linux- clean
 
$ make CROSS_COMPILE=arm-linux- clean
Line 79: Line 215:
 
$ make CROSS_COMPILE=arm-linux- install
 
$ make CROSS_COMPILE=arm-linux- install
 
</syntaxhighlight>
 
</syntaxhighlight>
−
注意：请确保你的主机PC当前使用的交叉编译器为NanoPi 2配套的arm-linux-gcc-4.9.3。<br>
+
Note: please make sure to install the cross compiler "arm-linux-gcc-4.9.3" on your PC, which is used to compile files for the NanoPi 2.<br>
−
编译成功后库文件位于install/lib目录下，而测试程序则位于install/usr/bin目录下，模块Matrix-Sound_Sensor对应的测试程序为matrix-sound_sensor。<br>
+
Generated library files are under the "install/lib" directory. The test program is under the "install/usr/bin" directory.<br>
−
硬件驱动模块位于modules目录下，对应的驱动源码都包含在在NanoPi 2的Linux内核仓库里：https://github.com/friendlyarm/linux-3.4.y.git <br>
+
The modules are under the "modules" directory. The driver's source code is in github: https://github.com/friendlyarm/linux-3.4.y.git <br>
  
−
===运行测试程序===
+
===Run Test Program===
−
将带有Debian系统的SD卡插入一台运行Linux的电脑，可以挂载SD卡上的boot和rootfs分区。<br>
+
Please insert a TF card which is flashed with Debian to a Linux host and mount its boot and rootfs sections.<br>
−
假设rootfs分区的挂载路径为/media/rootfs，执行以下命令将Matrix的硬件驱动、库文件和测试程序拷贝到NanoPi 2的文件系统上。<br>
+
We assume the rootfs is mounted to /media/rootfs then please run the following commands to copy the module, library and test program to the card.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cp modules /media/rootfs/ -r
 
$ cp modules /media/rootfs/ -r
Line 92: Line 228:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
−
将SD卡重新插入NanoPi 2，上电启动，在Debian的shell终端中执行以下命令加载硬件驱动。<br>
+
Insert this TF card to your NanoPi 2, power on and run the following commands to load the driver.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd /modules
 
$ cd /modules
Line 98: Line 234:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
−
运行模块Matrix-Sound_Sensor的测试程序。<br>
+
Start the matrix-sound_sensor program.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-sound_sensor
 
$ matrix-sound_sensor
 
</syntaxhighlight>
 
</syntaxhighlight>
  
−
运行效果如下：<br>
+
Here is what you expect to observe:<br>
 
[[File:matrix-sound_sensor_result.png|frameless|600px|matrix-sound_sensor_result]] <br>
 
[[File:matrix-sound_sensor_result.png|frameless|600px|matrix-sound_sensor_result]] <br>
−
对着模块说话可以被成功检测到，调整模块上的可调电阻可以改变灵敏度。
+
When you talk to the module your speech will be detected. When you adjust the resistor the module's sensitivity will be changed
  
−
===代码展示===
+
===Code Sample===
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
static struct sensor sound[] = {
 
static struct sensor sound[] = {
Line 146: Line 282:
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
−
 
  
 
==Connect to NanoPi==
 
==Connect to NanoPi==
Line 329: Line 464:
  
 
==Connect to Arduino==
 
==Connect to Arduino==
 +
--->
  
 
==Resources==
 
==Resources==
Line 336: Line 472:
 
* Added the description for "NanoPi 2 branch" in Section 4
 
* Added the description for "NanoPi 2 branch" in Section 4
 
* Added Section 5: Connect to NanoPi 2
 
* Added Section 5: Connect to NanoPi 2
−
 
+
===June-24-2016===
 +
* Re-organized and simplified wiki
 
<!--
 
<!--
  

Latest revision as of 15:11, 24 June 2016

查看中文

1 Introduction

Sound Sensor
  • The Matrix-Sound_Sensor module is used to detect sound.
  • The module has a variable resistor which can be used to control the threshold value of a sound level. Only when a sound level's value is greater than this threshold the module can detect it. Turning clockwise increases this threshold value. Turning anticlockwise decreases this value.
  • By default this module's output level is high. When it detects sound signals its output level will turn low. When sound signals are not detected its output will turn high again without time delay.

2 Features

  • Variable threshold value
  • 2.54mm spacing pin interface
  • PCB dimension (mm): 16 x 24

声音传感器PCB

  • Pin Description:
Pin Description
S GPIO
V Supply Voltage 5V
G Ground

3 Basic Device Operation

  • The module contains an electret condenser microphone. Sound waves impinging on the diaphragm cause the capacitance between it and the back plate to change synchronously, this in turn induces an AC voltage on the back plate.
  • This sound sensor functions like a microphone which receives sound waves and convert them to images which show the sound waves' vibration. When it receives a sound wave it will output 1 but cannot measure its strength.


4 Applications

4.1 Connect to NanoPi M1

Refer to the following connection diagram to connect the module to the NanoPi M1:
Matrix-Sound_Sensor_nanopi_m1

Connection Details:

Matrix-Sound_Sensor NanoPi M1
S Pin7
V Pin4
G Pin6

4.2 Connect to NanoPi 2

Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-Sound_Sensor_nanopi_2

Connection Details:

Matrix-Sound_Sensor NanoPi 2
S Pin7
V Pin4
G Pin6

4.3 Connect to NanoPi M2 / NanoPi 2 Fire

Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:
Matrix-Sound_Sensor_nanopi_m2

Connection Details:

Matrix-Sound_Sensor NanoPi M2
S Pin7
V Pin4
G Pin6

4.4 Connect to NanoPC-T2

Refer to the following connection diagram to connect the module to the NanoPC-T2:
Matrix-Sound_Sensor_NanoPC-T2

Connection Details:

Matrix-Sound_Sensor NanoPC-T2
S Pin15
V Pin29
G Pin30

5 Compile & Run Test Program

Boot your ARM board with Debian and copy the matrix code: 

$ apt-get update && apt-get install git
$ git clone https://github.com/friendlyarm/matrix.git

If your cloning is done successfully a "matrix" directory will be generated.

Compile and install Matrix: 

$ cd matrix
$ make && make install

Run test program: 

$ matrix-gpio_int

Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.
Here is what you should observe:

Waiting event...
Device[0] value is 1

When there is a sound an event will be triggered and detected.

6 Code Sample

This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-gpio_int". Here is its source code: 

int main(int argc, char ** argv)
{
    int i, board;
    int retSize = -1;
    char value[ARRAY_SIZE(dev)];
 
    if ((board = boardInit()) < 0) {
        printf("Fail to init board\n");
        return -1;
    }
 
    if (argc == 2)
        dev[0].pin = atoi(argv[1]);
    system("modprobe "DRIVER_MODULE);
    signal(SIGINT, intHandler);
    if (board == BOARD_NANOPI_T2)
        dev[0].pin = GPIO_PIN(15);
    printf("Use GPIO_PIN(%d)\n", dev[0].pin);
    if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) {
        printf("Fail to init sensor\n");
        goto err;
    }
    printf("Waiting event...\n");
    if ((retSize = sensorRead(devFD, value, ARRAY_SIZE(dev))) == -1) {
        printf("Fail to read sensors\n");
    }
    if (retSize > 0) {
        i = 0;
        for (i=0; i<retSize; i++) {
            printf("Device[%d] value is %d\n", i, value[i]);
        }
    }
    sensorDeinit(devFD);
err:    
    system("rmmod "DRIVER_MODULE);
    return 0;
}

For more details about this APIs called in this code sample refer to Matrix API reference manual


7 Resources

8 Update Log

8.1 Feb-23-2016

  • Added the description for "NanoPi 2 branch" in Section 4
  • Added Section 5: Connect to NanoPi 2

8.2 June-24-2016

  • Re-organized and simplified wiki
Retrieved from "https://wiki.friendlyelec.com/wiki/index.php?title=Matrix_-_Sound_Sensor&oldid=6278"