Difference between revisions of "Matrix - Button/zh"
From FriendlyELEC WiKi
(→连接NanoPC-T2) |
|||
(9 intermediate revisions by 2 users not shown) | |||
Line 28: | Line 28: | ||
==硬件连接== | ==硬件连接== | ||
+ | ===连接NanoPi NEO/NanoPi NEO Air=== | ||
+ | NanoPi M1和NanoPi NEO以及NanoPi NEO Air的前24Pin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,并且使用同一份代码。<br> | ||
+ | |||
+ | 参考下图连接模块:<br> | ||
+ | [[File:Matrix-Button_nanopi_NEO.jpg|frameless|600px|Matrix-Button_nanopi_NEO]] | ||
+ | |||
+ | 连接说明: | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |Matrix-Button || NanoPi NEO | ||
+ | |- | ||
+ | |S || Pin7 | ||
+ | |- | ||
+ | |V || Pin4 | ||
+ | |- | ||
+ | |G || Pin6 | ||
+ | |} | ||
+ | |||
===连接NanoPi M1=== | ===连接NanoPi M1=== | ||
参考下图连接模块:<br> | 参考下图连接模块:<br> | ||
Line 77: | Line 95: | ||
|} | |} | ||
− | === | + | ===连接NanoPi M3=== |
参考下图连接模块:<br> | 参考下图连接模块:<br> | ||
− | [[File:Matrix- | + | [[File:Matrix-Button_nanopi_m3.jpg|frameless|600px|Matrix-Button_nanopi_m3]] |
连接说明: | 连接说明: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
− | |Matrix- | + | |Matrix-Button || NanoPi M3 |
+ | |- | ||
+ | |S || Pin7 | ||
+ | |- | ||
+ | |V || Pin4 | ||
+ | |- | ||
+ | |G || Pin6 | ||
+ | |} | ||
+ | |||
+ | ===连接NanoPC-T2/NanoPC-T3=== | ||
+ | 由于NanoPC-T2跟NanoPC-T3的引脚是一样的,所以连接方式是一样的,这里仅以T2为例,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 | |S || Pin15 | ||
Line 109: | Line 143: | ||
运行测试程序: | 运行测试程序: | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | $ matrix- | + | $ 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> | 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> | 运行效果如下:<br> | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | + | Waiting event... | |
− | + | Device[0] value is 1 | |
</syntaxhighlight> | </syntaxhighlight> | ||
+ | 按下按键时会检测到事件。 | ||
==代码说明== | ==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"> | <syntaxhighlight lang="c"> | ||
int main(int argc, char ** argv) | int main(int argc, char ** argv) | ||
Line 125: | Line 160: | ||
int i, board; | int i, board; | ||
int retSize = -1; | int retSize = -1; | ||
− | char value[ARRAY_SIZE( | + | char value[ARRAY_SIZE(dev)]; |
− | |||
− | |||
− | |||
− | |||
− | |||
if ((board = boardInit()) < 0) | if ((board = boardInit()) < 0) | ||
printf("Fail to init board\n"); | 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); | system("modprobe "DRIVER_MODULE); | ||
signal(SIGINT, intHandler); | signal(SIGINT, intHandler); | ||
if (board == BOARD_NANOPI_T2) | if (board == BOARD_NANOPI_T2) | ||
− | + | dev[0].pin = GPIO_PIN(15); | |
− | if ((devFD =sensorInit( | + | if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) { |
printf("Fail to init sensor\n"); | printf("Fail to init sensor\n"); | ||
return -1; | return -1; | ||
} | } | ||
− | printf(" | + | printf("Waiting event...\n"); |
− | if ((retSize = sensorRead(devFD, value, ARRAY_SIZE( | + | if ((retSize = sensorRead(devFD, value, ARRAY_SIZE(dev))) == -1) { |
printf("Fail to read sensors\n"); | printf("Fail to read sensors\n"); | ||
} | } | ||
Line 149: | Line 184: | ||
i = 0; | i = 0; | ||
for (i=0; i<retSize; i++) { | for (i=0; i<retSize; i++) { | ||
− | printf(" | + | printf("dev[%d] value: %d\n", i, value[i]); |
} | } | ||
} | } |
Latest revision as of 08:43, 10 November 2016
Contents
1 介绍
- 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。
2 特性
- 使用标准的3 PIN接口
- 尺寸为 8x24mm
- PCB尺寸(mm):8x24
- 引脚说明:
名称 | 描述 |
S | GPIO |
V | 电源5V |
G | 地 |
3 工作原理
- 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。
- 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。
4 硬件连接
4.1 连接NanoPi NEO/NanoPi NEO Air
NanoPi M1和NanoPi NEO以及NanoPi NEO Air的前24Pin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,并且使用同一份代码。
参考下图连接模块:
Matrix-Button_nanopi_NEO
连接说明:
Matrix-Button | NanoPi NEO |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.2 连接NanoPi M1
连接说明:
Matrix-Button | NanoPi M1 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.3 连接NanoPi 2
连接说明:
Matrix-Button | NanoPi 2 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.4 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:
连接说明:
Matrix-Button | NanoPi M2 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.5 连接NanoPi M3
参考下图连接模块:
Matrix-Button_nanopi_m3
连接说明:
Matrix-Button | NanoPi M3 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.6 连接NanoPC-T2/NanoPC-T3
由于NanoPC-T2跟NanoPC-T3的引脚是一样的,所以连接方式是一样的,这里仅以T2为例,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