Difference between revisions of "Matrix - Button"

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Line 2: Line 2:
  
 
==Introduction==
 
==Introduction==
−
[[File:Btn01.jpg|thumb|按键]]
+
[[File:Btn01.jpg|thumb|Button]]
 
* The Matrix-Button module is used to detect button events.
 
* 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.
 
* If the button is not pressed S will output high otherwise S will output low.
Line 27: Line 27:
 
* If the button is not pressed S will output high otherwise S will output low.
 
* If the button is not pressed S will output high otherwise S will output low.
  
 +
==硬件连接==
 +
===连接NanoPi M1===
 +
参考下图连接模块：<br>
 +
[[File:Matrix-Button_nanopi_m1.jpg|frameless|600px|Matrix-Button_nanopi_m1]]
 +
 +
连接说明：
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || NanoPi M1
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===连接NanoPi 2===
 +
参考下图连接模块：<br>
 +
[[File:Matrix-Button_nanopi_2.jpg|frameless|600px|Matrix-Button_nanopi_2]]
 +
 +
连接说明：
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || NanoPi 2
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===连接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>
 +
参考下图连接模块：<br>
 +
[[File:Matrix-Button_nanopi_m2.jpg|frameless|600px|Matrix-Button_nanopi_m2]]
 +
 +
连接说明：
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || NanoPi M2
 +
|-
 +
|S    || Pin7
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 +
===连接NanoPC-T2===
 +
参考下图连接模块：<br>
 +
[[File:Matrix-Button_NanoPC-T2.jpg|frameless|600px|Matrix-Button_NanoPC-T2]]
 +
 +
连接说明：
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || NanoPC-T2
 +
|-
 +
|S    || Pin15
 +
|-
 +
|V    || Pin29
 +
|-
 +
|G    || Pin30
 +
|}
 +
 +
==编译运行测试程序==
 +
启动开发板并运行Debian系统，进入系统后克隆Matrix代码仓库：
 +
<syntaxhighlight lang="bash">
 +
$ apt-get update && apt-get install git
 +
$ git clone https://github.com/friendlyarm/matrix.git
 +
</syntaxhighlight>
 +
克隆完成后会得到一个名为matrix的目录。
 +
 +
编译并安装Matrix：
 +
<syntaxhighlight lang="bash">
 +
$ cd matrix
 +
$ make && make install
 +
</syntaxhighlight>
 +
 +
运行测试程序：
 +
<syntaxhighlight lang="bash">
 +
$ matrix-gpio_int
 +
</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>
 +
运行效果如下：<br>
 +
<syntaxhighlight lang="bash">
 +
Waiting event...
 +
Device[0] value is 1
 +
</syntaxhighlight>
 +
按下按键时会检测到事件。
 +
 +
==代码说明==
 +
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:
 +
<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");
 +
   
 +
    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;
 +
}
 +
</syntaxhighlight>
 +
API说明参考维基：[[Matrix API reference manual/zh|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 313: Line 447:
  
 
==Connect to Arduino==
 
==Connect to Arduino==
 +
--->
  
 
==Resources==
 
==Resources==

Revision as of 11:00, 17 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 硬件连接

4.1 连接NanoPi M1

参考下图连接模块：
Matrix-Button_nanopi_m1

连接说明：

Matrix-Button NanoPi M1
S Pin7
V Pin4
G Pin6

4.2 连接NanoPi 2

参考下图连接模块：
Matrix-Button_nanopi_2

连接说明：

Matrix-Button NanoPi 2
S Pin7
V Pin4
G Pin6

4.3 连接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。
参考下图连接模块：
Matrix-Button_nanopi_m2

连接说明：

Matrix-Button NanoPi M2
S Pin7
V Pin4
G Pin6

4.4 连接NanoPC-T2

参考下图连接模块：
Matrix-Button_NanoPC-T2

连接说明：

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

5 编译运行测试程序

启动开发板并运行Debian系统，进入系统后克隆Matrix代码仓库： 

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

克隆完成后会得到一个名为matrix的目录。

编译并安装Matrix： 

$ cd matrix
$ make && make install

运行测试程序： 

$ matrix-gpio_int

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。
运行效果如下：

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

按下按键时会检测到事件。

6 代码说明

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: 

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;
}

API说明参考维基：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


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