Difference between revisions of "Matrix - IR Counter/zh"
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* U型对射光电开关传感器的发射器和接收器分别位于U型槽的两边,发射管发出红外信号并形成一光轴,当被检测物体经过U型槽且阻断光轴时,光电开关就产生了开关量信号。U型槽没有被阻挡时,接收管能接收到红外信号,模块输出高电平,U型槽被阻挡时,接收管不能接收到红外信号,模块输出低电平。 | * U型对射光电开关传感器的发射器和接收器分别位于U型槽的两边,发射管发出红外信号并形成一光轴,当被检测物体经过U型槽且阻断光轴时,光电开关就产生了开关量信号。U型槽没有被阻挡时,接收管能接收到红外信号,模块输出高电平,U型槽被阻挡时,接收管不能接收到红外信号,模块输出低电平。 | ||
− | == | + | ==硬件连接== |
− | + | ===连接NanoPi M1=== | |
− | + | 参考下图连接模块:<br> | |
− | + | [[File:Matrix-IR_Counter_nanopi_m1.jpg|frameless|600px|Matrix-IR_Counter_nanopi_m1]] | |
− | + | ||
− | + | ||
− | + | ||
− | + | 连接说明: | |
− | + | {| class="wikitable" | |
− | + | |- | |
− | + | |Matrix-IR_Counter || NanoPi M1 | |
+ | |- | ||
+ | |S || Pin7 | ||
+ | |- | ||
+ | |V || Pin4 | ||
+ | |- | ||
+ | |G || Pin6 | ||
+ | |} | ||
− | + | ===连接NanoPi 2=== | |
− | + | 参考下图连接模块:<br> | |
− | + | [[File:Matrix-IR_Counter_nanopi_2.jpg|frameless|600px|Matrix-IR_Counter_nanopi_2]] | |
− | + | ||
− | + | ||
− | + | ||
− | == | + | |
− | + | ||
− | + | ||
− | [[File: | + | |
连接说明: | 连接说明: | ||
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|} | |} | ||
− | === | + | ===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-IR_Counter_nanopi_m2.jpg|frameless|600px|Matrix-IR_Counter_nanopi_m2]] | |
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|} | |} | ||
− | === | + | ===连接NanoPC-T2=== |
− | + | 参考下图连接模块:<br> | |
− | + | [[File:Matrix-IR_Counter_NanoPC-T2.jpg|frameless|600px|Matrix-IR_Counter_NanoPC-T2]] | |
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− | [[File: | + | |
连接说明: | 连接说明: | ||
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|Matrix-IR_Counter || NanoPC-T2 | |Matrix-IR_Counter || NanoPC-T2 | ||
|- | |- | ||
− | |S || | + | |S || Pin15 |
|- | |- | ||
|V || Pin29 | |V || Pin29 | ||
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|} | |} | ||
− | == | + | ==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"> | <syntaxhighlight lang="bash"> | ||
− | $ | + | $ apt-get update && apt-get install git |
− | $ 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。 | ||
− | + | 编译并安装Matrix: | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | $ | + | $ cd matrix |
− | $ make | + | $ make && make install |
− | + | ||
</syntaxhighlight> | </syntaxhighlight> | ||
− | |||
− | |||
− | |||
− | + | 运行测试程序: | |
− | + | ||
− | + | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | $ | + | $ 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> | |
− | + | 运行效果如下:<br> | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | + | Waiting event... | |
− | + | dev[0] value: 1 | |
</syntaxhighlight> | </syntaxhighlight> | ||
− | + | ==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如下: | |
− | + | ||
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<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> | ||
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int main(int argc, char ** argv) | int main(int argc, char ** argv) | ||
{ | { | ||
− | int i; | + | int i, board; |
int retSize = -1; | int retSize = -1; | ||
− | char value[ARRAY_SIZE( | + | char value[ARRAY_SIZE(dev)]; |
− | + | ||
+ | if ((board = boardInit()) < 0) | ||
+ | printf("Fail to init board\n"); | ||
+ | |||
if (argc == 2) { | if (argc == 2) { | ||
− | + | dev[0].pin = atoi(argv[1]); | |
} | } | ||
− | + | printf("Using GPIO_PIN(%d)\n", dev[0].pin); | |
− | printf("Using GPIO_PIN(%d)\n", | + | system("modprobe "DRIVER_MODULE); |
− | if ((devFD =sensorInit( | + | 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"); | 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"); | ||
} | } | ||
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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]); |
} | } | ||
} | } | ||
sensorDeinit(devFD); | sensorDeinit(devFD); | ||
+ | system("rmmod "DRIVER_MODULE); | ||
return 0; | return 0; | ||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
+ | API说明参考维基:[[Matrix API reference manual/zh|Matrix API reference manual]] <br> | ||
+ | |||
+ | ==相关资料== |
Revision as of 02:42, 31 May 2016
Contents
1 介绍
- 模块Matrix-IR_Counter是红外对射计数传感器模块,使用U型对射光电开关传感器,5-Pin 2.54mm排针,V接电源,G接地,当传感器没有被阻挡时,S引脚输出高电平,当传感器没有被阻挡时,S引脚输出高电平。
2 特性
- 使用GPIO接口
- 尺寸为 16x24mm
- PCB尺寸(mm):16x24
- 引脚说明:
名称 | 描述 |
S | 数字输出 |
V | 电源5V |
G | 地 |
3 工作原理
- U型对射光电开关传感器的发射器和接收器分别位于U型槽的两边,发射管发出红外信号并形成一光轴,当被检测物体经过U型槽且阻断光轴时,光电开关就产生了开关量信号。U型槽没有被阻挡时,接收管能接收到红外信号,模块输出高电平,U型槽被阻挡时,接收管不能接收到红外信号,模块输出低电平。
4 硬件连接
4.1 连接NanoPi M1
连接说明:
Matrix-IR_Counter | NanoPi M1 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.2 连接NanoPi 2
参考下图连接模块:
Matrix-IR_Counter_nanopi_2
连接说明:
Matrix-IR_Counter | 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:
连接说明:
Matrix-IR_Counter | NanoPi M2 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.4 连接NanoPC-T2
参考下图连接模块:
Matrix-IR_Counter_NanoPC-T2
连接说明:
Matrix-IR_Counter | 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... dev[0] value: 1
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