Difference between revisions of "Matrix - Joystick"

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(Update Log)
 
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For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki: [[Matrix_-_Analog_to_Digital_Converter]].<br>
 
For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki: [[Matrix_-_Analog_to_Digital_Converter]].<br>
  
===连接NanoPi M1===
+
===Connect to NanoPi M1===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M1:<br>
 
[[File:Matrix_Joystick_nanopi_m1.jpg|frameless|600px|Matrix_Joystick_nanopi_m1]]
 
[[File:Matrix_Joystick_nanopi_m1.jpg|frameless|600px|Matrix_Joystick_nanopi_m1]]
  
连接说明:
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Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
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|}
 
|}
  
===连接NanoPi 2===
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===Connect to NanoPi 2===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi 2:<br>
 
[[File:Matrix-Joystick_nanopi_2.jpg|frameless|600px|Matrix-Joystick_nanopi_2]]
 
[[File:Matrix-Joystick_nanopi_2.jpg|frameless|600px|Matrix-Joystick_nanopi_2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
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|}
 
|}
  
===连接NanoPi M2 / NanoPi 2 Fire===
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===Connect to NanoPi M2 / NanoPi 2 Fire===
NanoPi M2和NanoPi 2 Fire的40 Pin引脚定义是一模一样的,所以它们操作Matrix配件的步骤是一样的,这里仅以NanoPi M2为例。<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br>
参考下图连接模块:<br>
+
 
[[File:Matrix_Joystick_nanopi_m2.jpg|frameless|600px|Matrix_Joystick_nanopi_m2]]
 
[[File:Matrix_Joystick_nanopi_m2.jpg|frameless|600px|Matrix_Joystick_nanopi_m2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
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|}
 
|}
  
===连接NanoPC-T2===
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===Connect to NanoPC-T2===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
 
[[File:Matrix_Joystick_NanoPC-T2.jpg|frameless|600px|Matrix_Joystick_NanoPC-T2]]
 
[[File:Matrix_Joystick_NanoPC-T2.jpg|frameless|600px|Matrix_Joystick_NanoPC-T2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
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|}
 
|}
  
==编译运行测试程序==
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==Compile & Run Test Program==
启动开发板并运行Debian系统,进入系统后克隆Matrix代码仓库:
+
Boot your ARM board with Debian and copy the matrix code:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ apt-get update && apt-get install git
 
$ apt-get update && apt-get install git
 
$ git clone https://github.com/friendlyarm/matrix.git
 
$ git clone https://github.com/friendlyarm/matrix.git
 
</syntaxhighlight>
 
</syntaxhighlight>
克隆完成后会得到一个名为matrix的目录。
+
If your cloning is done successfully a "matrix" directory will be generated.
  
编译并安装Matrix:
+
Compile and install Matrix:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd matrix
 
$ cd matrix
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</syntaxhighlight>
 
</syntaxhighlight>
  
运行测试程序:
+
Run test program:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-joystick
 
$ matrix-joystick
 
</syntaxhighlight>
 
</syntaxhighlight>
注意:此模块并不支持热插拔,启动系统前需要确保硬件连接正确。<br>
+
Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.<br>
运行效果如下:<br>
+
Here is what you should observe:<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
x=1280 y=1280
 
x=1280 y=1280
 
</syntaxhighlight>
 
</syntaxhighlight>
拨动摇杆可以检测到x和y轴的变化。
+
When you move the stick you will see X and Y's value changes.
  
==代码说明==
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==Code Sample==
所有的开发板都共用一套Matrix代码,本模块的测试示例代码为matrix-joystick,内容如下:
+
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-joystick". Here is its source code:
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
int main(int argc, char ** argv)
 
int main(int argc, char ** argv)
Line 160: Line 159:
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
API说明参考维基:[[Matrix API reference manual/zh|Matrix API reference manual]] <br>
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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==
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==Connect to Arduino==
 
==Connect to Arduino==
 
--->
 
--->
 +
 
==Resources==
 
==Resources==
  
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* 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-21-2016===
 +
* Re-organized and simplified wiki
 
<!--
 
<!--
 
==Introduction==
 
==Introduction==

Latest revision as of 14:03, 21 June 2016

查看中文

1 Introduction

Joystick
  • The matrix-joystick module is a two-axis stick module. It consists of two Sliding rheostats and one button. It has two analog outputs and one digital output. Its positional states can be measured as X and Y axis values as the calibrated resistance of the two potentiometers.
  • When you move the joystick the sliding rheostats' resistance will change and the corresponding x/y values will change too. When you push the joystick the SW level will turn low.

2 Features

  • X and Y axis, and one button
  • 2.54mm spacing pin
  • PCB dimension(mm): 24 X 32

双轴摇杆PCB

  • Pin Description:
Pin Description
GND Ground
5V Supply Voltage 5V
SW Button
X X Axis
Y Y Axis

3 Basic Device Operation

  • It has two analog outputs and one digital output. The two analog outputs are measured as X and Y values as the calibrated resistance of the two potentiometers. The digital output is measured as Z value indicating whether or not the button is pressed.
  • We extend all three outputs: X, Y and Z and users can use them easily.


4 Applications

The Matrix-Joystick module outputs analog signals which can be converted to digital signals with an ADC converter e.g. the Matrix-Analog_to_Digital_Converter.
For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki: Matrix_-_Analog_to_Digital_Converter.

4.1 Connect to NanoPi M1

Refer to the following connection diagram to connect the module to the NanoPi M1:
Matrix_Joystick_nanopi_m1

Connection Details:

Matrix-Joystick
GND NanoPi M1 Pin9
5V NanoPi M1 Pin2
X Matrix-Analog_to_Digital_Converter A1
Y Matrix-Analog_to_Digital_Converter A2

4.2 Connect to NanoPi 2

Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-Joystick_nanopi_2

Connection Details:

Matrix-Joystick
GND NanoPi 2 Pin9
5V NanoPi 2 Pin2
X Matrix-Analog_to_Digital_Converter A1
Y Matrix-Analog_to_Digital_Converter A2

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_Joystick_nanopi_m2

Connection Details:

Matrix-Joystick
GND NanoPi M2 Pin9
5V NanoPi M2 Pin2
X Matrix-Analog_to_Digital_Converter A1
Y Matrix-Analog_to_Digital_Converter A2

4.4 Connect to NanoPC-T2

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

Connection Details:

Matrix-Joystick
GND NanoPC-T2 USB Host GND
5V NanoPC-T2 USB Host 5V
X Matrix-Analog_to_Digital_Converter A1
Y Matrix-Analog_to_Digital_Converter A2

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-joystick

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:

x=1280 y=1280

When you move the stick you will see X and Y's value changes.

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-joystick". Here is its source code:

int main(int argc, char ** argv)
{
    int i = 0;
    int x, y, board;
 
    x = y = 0;
    if ((board = boardInit()) < 0) {
        printf("Fail to init board\n");
        return -1;
    }
 
    system("modprobe "DRIVER_MODULE);
    signal(SIGINT, intHandler);
    for (i=0; i<PS2_READ_TIMES; i++) {
        if (pcf8591Read(1, &x) != -1 && pcf8591Read(2, &y) != -1) {
            printf("x=%4d y=%4d\n", x, y);
        }
    }
    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-21-2016

  • Re-organized and simplified wiki