Difference between revisions of "Matrix - Button"

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[[Matrix - Button|English]]
+
[[Matrix - Button/zh|查看中文]]
==介绍==
+
[[File:Btn01.jpg|thumb|按键]]
+
* 模块Matrix-Button用于检测按键事件。
+
* 未按时输出高电平,按下后输出低电平。
+
  
==特性==
+
==Introduction==
* 使用标准的3 PIN接口
+
[[File:Btn01.jpg|thumb|Button]]
* 尺寸为 8x24mm
+
* The Matrix-Button module is used to detect button events.
* PCB尺寸(mm):8x24
+
* If the button is not pressed S will output high otherwise S will output low.
 +
 
 +
==Features==
 +
* 3 PIN interface
 +
* PCB dimension (mm): 8 x 24
 
[[File:btn002.png | frameless|400px|BTN-01.PCB]]
 
[[File:btn002.png | frameless|400px|BTN-01.PCB]]
  
* 引脚说明:
+
* Pin Description:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
|名称 || 描述
+
|Pin || Description
 
|-
 
|-
 
|S    || GPIO
 
|S    || GPIO
 
|-
 
|-
|V    || 电源5V
+
|V    || Supply Voltage 5V
 
|-
 
|-
|G    ||
+
|G    || Ground
 
|}
 
|}
  
==工作原理==
+
==Basic Device Operation==
* Matrix-Button主要器件是一个瞬时(非自锁)按钮开关,通过3-Pin 2.54mm排针中的S信号输出按钮开关的状态。
+
* 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.
* 平时没有按下按钮时触点断开,S输出高电平;当按下按钮时触点导通,S输出低电平,直到松开才恢复高电平。
+
* If the button is not pressed S will output high otherwise S will output low.
 +
 
 +
==Applications==
 +
===Connect to NanoPi M1===
 +
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]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || 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-Button_nanopi_2.jpg|frameless|600px|Matrix-Button_nanopi_2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || 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-Button_nanopi_m2.jpg|frameless|600px|Matrix-Button_nanopi_m2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || 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-Button_NanoPC-T2.jpg|frameless|600px|Matrix-Button_NanoPC-T2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-Button || 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 you press the button an event will be 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");
 +
   
 +
    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>
 +
For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br>
  
==下载Matrix源码==
+
<!---
Matrix配件相关的代码是完全开源的,统一由一个仓库进行管理:https://github.com/friendlyarm/matrix.git <br>
+
==Download Matrix Source Code==
该仓库里不同的分支代表着Matrix配件所支持的不同开发板。<br>
+
All the matrix modules' code samples are open source. They are maintained on GitHub --https://github.com/friendlyarm/matrix.git <br>
* nanopi分支用于支持NanoPi;
+
Each branch in this hub contains the matrix modules' code samples for a board that the matrix modules can work with.<br>
* nanopi2分支用于支持NanoPi 2;
+
* The nanopi branch contains the matrix modules' code samples for the NanoPi
* tiny4412分支用于支持Tiny4412;
+
* The nanopi 2 branch contains the matrix modules' code samples for the NanoPi 2
* raspberrypi分支用于支持RaspberryPi;
+
* The tiny4412 branch contains the matrix modules' code samples for the Tiny4412
 +
* The raspberrypi branch contains the matrix modules' code samples for the RaspberryPi
  
在主机PC上安装git,以Ubuntu14.04为例
+
Please follow the steps below to get the source code:<br>
 +
Install the git utility on a PC running Ubuntu14.04
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ sudo apt-get install git
 
$ sudo apt-get install git
 
</syntaxhighlight>
 
</syntaxhighlight>
  
克隆Matrix配件代码仓库
+
Clone the matrix code from GitHub
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ 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,里面存放着所有Matrix配件的代码。
+
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-Button和NanoPi 2:<br>
+
Please refer to the following connection diagram to connect the Matrix-Button 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]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 62: Line 196:
 
|G  || Pin6
 
|G  || Pin6
 
|}
 
|}
===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 69: Line 203:
 
</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 75: Line 209:
 
$ 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 NanoPi2.<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-Button对应的测试程序为matrix-button。<br>
+
Generated library files are under the "install/lib" directory. Applications are under the "install/usr/bin" directory. The test program for the "Matrix-Button" module is "matrix-button".<br>
 +
The driver is under the modules directory and its 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 driver, 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 87: Line 222:
 
</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.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd /modules
 
$ cd /modules
Line 93: Line 228:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
运行模块Matrix-Button的测试程序。<br>
+
Start the matrix-button program<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-button
 
$ matrix-button
 
</syntaxhighlight>
 
</syntaxhighlight>
  
运行效果如下:<br>
+
Here is what you should expect:<br>
 
[[File:matrix-button_result.png|frameless|600px|matrix-button_result]]
 
[[File:matrix-button_result.png|frameless|600px|matrix-button_result]]
  
===代码展示===
+
===Code Sample===
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
static struct sensor button[] = {
 
static struct sensor button[] = {
Line 140: Line 275:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
==与NanoPi连接使用==
+
==Connect to NanoPi==
===准备工作===
+
===Preparations===
在NanoPi上运行Debian系统,然后在主机PC上安装并使用相应的编译器,参考wiki: [[NanoPi/zh|NanoPi]] & [[How_to_build_the_Compiling_Environment/zh|How to Build the Compiling Environment]]<br>
+
Please install a Debian on a NanoPi and an appropriate cross compiler on a PC. Please refer to wiki:[[NanoPi/zh|NanoPi]] & [[How_to_build_the_Compiling_Environment/zh|How to Build the Compiling Environment]] <br>
注意: 只有使用nanopi-v4.1.y-matrix分支编译出来的内核才能配合Matrix配件正常工作。<br>
+
Compile a NanoPi kernel. Note: please use the kernel's source code from the nanopi-v4.1.y-matrix branch.<br>
下载NanoPi内核源代码并编译: <br>
+
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ git clone https://github.com/friendlyarm/linux-4.x.y.git
 
$ git clone https://github.com/friendlyarm/linux-4.x.y.git
Line 153: Line 287:
 
$ make
 
$ make
 
</syntaxhighlight>
 
</syntaxhighlight>
编译好后的zImage位于内核源码arch/arm/boot/目录下,把该zImage替换掉NanoPi烧写文件sd-fuse_nanopi/prebuilt下的zImage,重新制作SD卡即可。
+
A newly generated zImage will be under arch/arm/boot/. You can replace the one under "sd-fuse_nanopi/prebuilt" with this new image file.
  
===硬件连接===
+
===Hardware Connection===
参考下图连接模块Matrix-Button和NanoPi:<br>
+
Please refer to the following connection diagram to connect the Matrix-Button to the NanoPi <br>
 
[[File:matrix-button_nanopi.jpg|frameless|600px|matrix-button_nanopi]]
 
[[File:matrix-button_nanopi.jpg|frameless|600px|matrix-button_nanopi]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 166: Line 300:
 
|S  || Pin7
 
|S  || Pin7
 
|-
 
|-
|V   || Pin4
+
|V   || Pin4
 
|-  
 
|-  
|G   || Pin6
+
|G       || Pin6
 
|}
 
|}
  
===编译测试程序===
+
===Compile Test Program===
进入Matrix代码仓库,切换到nanopi分支
+
Please login the matrix hub and enter the nanopi branch
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd matrix
 
$ cd matrix
Line 178: Line 312:
 
</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 184: Line 318:
 
$ 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-Debian配套的arm-linux-gcc-4.4.3。<br>
+
Note: please make sure to install the cross compiler "arm-linux-gcc-4.4.3" on your PC, which is used to compile files for the NanoPi-Debian.<br>
编译出来的库文件位于install/lib目录下,而测试程序则位于install/usr/bin目录下,模块Matrix-Button对应的测试程序为matrix-button。<br>
+
Generated library files are under the "install/lib" directory. Applications are under the "install/usr/bin" directory. The test program for the "Matrix-Button" module is "matrix-button".<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,执行以下命令可将Matrix的所有库文件和测试程序拷贝到NanoPi的文件系统上。<br>
+
We assume the rootfs is mounted to /media/rootfs then please run the following commands to copy these files to the card.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
$ cp install/usr/bin/* /media/rootfs/usr/bin/
 
 
$ cp install/lib/* /media/rootfs/lib/ -d
 
$ cp install/lib/* /media/rootfs/lib/ -d
 +
$ cp install/usr/bin/* /media/rootfs/usr/bin/
 
</syntaxhighlight>
 
</syntaxhighlight>
  
将SD卡重新插入NanoPi,上电启动,在Debian的shell终端中执行以下命令运行模块Matrix-Button的测试程序。<br>
+
Insert this TF card to your NanoPi, power on and run the following commands.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-button
 
$ matrix-button
 
</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正常连接。
 
  
===代码展示===
+
===Code Sample===
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
int main(int argc, char ** argv)
 
int main(int argc, char ** argv)
Line 230: Line 363:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
==与Tiny4412连接使用==
+
==Connect to Tiny4412==
===准备工作===
+
===Preparations===
参考Tiny4412光盘里的《友善之臂Ubuntu使用手册》,在Tiny4412上运行UbuntuCore系统,然后在主机PC上安装并使用相应的编译器。<br>
+
Please refer to the Tiny4412's user's manual to install a UbuntuCore on the Tiny4412 and install an appropriate cross compiler on a PC.<br>
注意:只能使用Tiny4412SDK-1506的底板。
+
Note: only the Tiny4412SDK-1506 carrier board can work with this module.
  
===硬件连接===
+
===Hardware Connection===
参考下图连接模块Matrix-Button和Tiny4412 <br>
+
Please refer to the following diagram to connect the Matrix-Button to the Tiny4412 <br>
 
[[File:matrix-button_tiny4412.jpg|frameless|600px|matrix-button_tiny4412]]
 
[[File:matrix-button_tiny4412.jpg|frameless|600px|matrix-button_tiny4412]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 251: Line 384:
 
|}
 
|}
  
===编译测试程序===
+
===Compile Test Program===
进入Matrix代码仓库,切换到tiny4412分支
+
Please login the Matrix hub and enter the matrix-tiny4412 branch
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd matrix
 
$ cd matrix
Line 258: Line 391:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
编译Matrix配件代码
+
Compile the matrix code
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ make CROSS_COMPILE=arm-linux-gnueabihf- clean
 
$ make CROSS_COMPILE=arm-linux-gnueabihf- clean
Line 264: Line 397:
 
$ make CROSS_COMPILE=arm-linux-gnueabihf- install
 
$ make CROSS_COMPILE=arm-linux-gnueabihf- install
 
</syntaxhighlight>
 
</syntaxhighlight>
注意:请确保你的主机PC当前使用的交叉编译器为Tiny4412-UbuntuCore配套的arm-linux-gnueabihf-gcc-4.7.3。<br>
+
Note: please make sure to install the cross compiler "arm-linux-gnueabihf-gcc-4.7.3" on your PC, which is used to compile files for the Tiny4412-UbuntuCore. <br>
编译出来的库文件位于install/lib目录下,而测试程序则位于install/usr/bin目录下,模块Matrix-Button对应的测试程序为matrix-button。
+
Generated library files are under the "install/lib" directory. Applications are under the "install/usr/bin" directory. The test program for the "Matrix-Button" module is "matrix-button".
  
===运行测试程序===
+
===Run Test Program===
将带有UbuntuCore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 an SD card which is flashed with UbuntuCore 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,执行以下命令可将Matrix的所有库文件和测试程序拷贝到Tiny4412的文件系统上。<br>
+
We assume the rootfs is mounted to /media/rootfs then please run the following commands to copy these files the card.<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cp install/usr/bin/* /media/rootfs/usr/bin/
 
$ cp install/usr/bin/* /media/rootfs/usr/bin/
Line 275: Line 408:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
将SD卡重新插入Tiny4412,上电启动,在UbuntuCore的shell终端中执行以下命令运行模块Matrix-Button的测试程序。<br>
+
Insert this card to your Tiny4412, power on and run the following command to start the Matrix-Button test program。<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-button
 
$ matrix-button
 
</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。
+
Note: this module is not plug and play therefore before running the module please make sure it is connected to a Tiny4412.
  
===代码展示===
+
===Code Sample===
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
int main(int argc, char ** argv)
 
int main(int argc, char ** argv)
Line 289: Line 422:
 
     char value[ARRAY_SIZE(button)];
 
     char value[ARRAY_SIZE(button)];
 
     int devFD = -1;
 
     int devFD = -1;
 
+
 
     printf("Using pin GPIO_PIN1\n");
 
     printf("Using pin GPIO_PIN1\n");
 
     if ((devFD =sensorInit(button, ARRAY_SIZE(button))) == -1) {
 
     if ((devFD =sensorInit(button, ARRAY_SIZE(button))) == -1) {
Line 310: Line 443:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
==与RaspberryPi连接使用==
+
==Connect to RaspberryPi==
 +
 
 +
==Connect to Arduino==
 +
--->
 +
 
 +
==Resources==
 +
 
 +
==Update Log==
 +
===Feb-19-2016===
 +
* In section 4 added NanoPi 2 branch
 +
* In section 5.2 added the driver and its source code's locations
 +
 
 +
===June-17-2016===
 +
* Re-organized and simplified wiki
 +
 
 +
<!--
 +
 
 +
==Introduction==
 +
[[Image:Btn.png|thumb|按键]]
 +
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.
 +
 
 +
==Features==
 +
* Instant, non self-lock
 +
* Tiny, easy to be used in various situations
 +
* 2.54mm spacing pin
 +
 
 +
==How To==
 +
===Connection===
 +
*Connect to Tiny4412 SDK (1506)
 +
::Connect the module's pin S to GPIO PIN1, pin V to 5V and pin G grounded
 +
 
 +
===Code Sample in C Under Linux===
 +
<syntaxhighlight lang="c">
 +
#include <stdio.h>
 +
#include "libfahw.h"
 +
 
 +
static struct sensor button[] = {
 +
        {
 +
                TINY4412_GPIO_PIN1,
 +
                IRQ_TYPE_EDGE_FALLING,
 +
        }
 +
};
 +
 
 +
int main(void)
 +
{
 +
    int i;
 +
    int retSize = -1;
 +
    char value[ARRAY_SIZE(button)];
 +
    int devFD = -1;
 +
    if ((devFD =sensorInit(button, ARRAY_SIZE(button))) == -1) {
 +
        printf("Fail to init sensor\n");
 +
        return -1;
 +
    }
 +
    printf("Press the button...\n");
 +
    if (( retSize = sensorRead(devFD, value, ARRAY_SIZE(button)) ) == -1) {
 +
        printf("Fail to read sensors\n");
 +
    }
 +
    if (retSize > 0) {
 +
        i = 0;
 +
        for (i=0; i<retSize; i++) {
 +
            printf("Button[%d]:%d\n", i, value[i]);
 +
        }
 +
    }
 +
    sensorDeinit(devFD);
 +
    return 0;
 +
}
 +
</syntaxhighlight>
 +
 
 +
===Compile and Run===
 +
<syntaxhighlight lang="bash">
 +
git clone http://github.com/friendlyarm/fa-hardware.git
 +
cd fa-hardware
 +
cd demo
 +
cd matrix-button
 +
make
 +
</syntaxhighlight>
 +
Copy your compiled bin to your board and you are ready to go.
  
==与Arduino连接使用==
+
==Resources==
  
==相关资料==
+
-->

Latest revision as of 10:31, 19 June 2016

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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