Difference between revisions of "Matrix - Button"

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(→‎Applications)
 
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==Applications==
 
==Applications==
 
===Connect to NanoPi M1===
 
===Connect to NanoPi M1===
−
Please refer to the following connection diagram to connect the module to the NanoPi M1:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M1:<br>
 
[[File:Matrix-Button_nanopi_m1.jpg|frameless|600px|Matrix-Button_nanopi_m1]]
 
[[File:Matrix-Button_nanopi_m1.jpg|frameless|600px|Matrix-Button_nanopi_m1]]
  
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===Connect to NanoPi 2===
 
===Connect to NanoPi 2===
−
Please refer to the following connection diagram to connect the module to the NanoPi 2:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi 2:<br>
 
[[File:Matrix-Button_nanopi_2.jpg|frameless|600px|Matrix-Button_nanopi_2]]
 
[[File:Matrix-Button_nanopi_2.jpg|frameless|600px|Matrix-Button_nanopi_2]]
  
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===Connect to NanoPi M2 / NanoPi 2 Fire===
 
===Connect to NanoPi M2 / NanoPi 2 Fire===
−
Please refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br>
 
[[File:Matrix-Button_nanopi_m2.jpg|frameless|600px|Matrix-Button_nanopi_m2]]
 
[[File:Matrix-Button_nanopi_m2.jpg|frameless|600px|Matrix-Button_nanopi_m2]]
  
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===Connect to NanoPC-T2===
 
===Connect to NanoPC-T2===
−
Please refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
+
Refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
 
[[File:Matrix-Button_NanoPC-T2.jpg|frameless|600px|Matrix-Button_NanoPC-T2]]
 
[[File:Matrix-Button_NanoPC-T2.jpg|frameless|600px|Matrix-Button_NanoPC-T2]]
  
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|}
 
|}
  
−
==编译运行测试程序==
+
==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-gpio_int
 
$ matrix-gpio_int
 
</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">
 
Waiting event...
 
Waiting event...
 
Device[0] value is 1
 
Device[0] value is 1
 
</syntaxhighlight>
 
</syntaxhighlight>
−
按下按键时会检测到事件。
+
When you press the button an event will be detected.
  
−
==代码说明==
+
==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-gpio_int，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-gpio_int". Here is its source code:
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
int main(int argc, char ** argv)
 
int main(int argc, char ** argv)
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}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
−
API说明参考维基：[[Matrix API reference manual/zh|Matrix API reference manual]] <br>
+
For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br>
  
 
<!---
 
<!---
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* In section 5.2 added the driver and its source code's locations  
 
* In section 5.2 added the driver and its source code's locations  
  
 +
===June-17-2016===
 +
* Re-organized and simplified wiki
  
 
<!--
 
<!--

Latest revision as of 10:31, 19 June 2016

查看中文

1 Introduction

Button
  • The Matrix-Button module is used to detect button events.
  • If the button is not pressed S will output high otherwise S will output low.

2 Features

  • 3 PIN interface
  • PCB dimension (mm): 8 x 24

BTN-01.PCB

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

3 Basic Device Operation

  • The Matrix-Button is an instant(non self-lock) button. The button's status can be read from pin S in the 3-pin 2.54 mm spacing pin header.
  • If the button is not pressed S will output high otherwise S will output low.

4 Applications

4.1 Connect to NanoPi M1

Refer to the following connection diagram to connect the module to the NanoPi M1:
Matrix-Button_nanopi_m1

Connection Details:

Matrix-Button 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-Button_nanopi_2

Connection Details:

Matrix-Button 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-Button_nanopi_m2

Connection Details:

Matrix-Button 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-Button_NanoPC-T2

Connection Details:

Matrix-Button 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 you press the button an event will be 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");
 
    if (argc == 2) {
        dev[0].pin = atoi(argv[1]);
    }
    printf("Using GPIO_PIN(%d)\n", dev[0].pin);
    system("modprobe "DRIVER_MODULE);
    signal(SIGINT, intHandler);
    if (board == BOARD_NANOPI_T2)
        dev[0].pin = GPIO_PIN(15);
    if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) {
        printf("Fail to init sensor\n");
        return -1;
    }
    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("dev[%d] value: %d\n", i, value[i]);
        }
    }
    sensorDeinit(devFD);
    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-19-2016

  • In section 4 added NanoPi 2 branch
  • In section 5.2 added the driver and its source code's locations

8.2 June-17-2016

  • Re-organized and simplified wiki


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