Difference between revisions of "Matrix - IR Counter"
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[[Matrix - IR Counter/zh|查看中文]] | [[Matrix - IR Counter/zh|查看中文]] | ||
+ | |||
+ | |||
+ | ==介绍== | ||
+ | [[File:Matrix-IR_Counter.png|thumb|]] | ||
+ | *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。 | ||
+ | |||
+ | ==特性== | ||
+ | * 使用GPIO接口 | ||
+ | *尺寸为 16x24mm | ||
+ | *PCB尺寸(mm):16x24 | ||
+ | [[File:Matrix-IR_Counter_PCB.png|frameless|400px|]] | ||
+ | |||
+ | * 引脚说明: | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |名称 || 描述 | ||
+ | |- | ||
+ | |S || 数字输出 | ||
+ | |- | ||
+ | |V || 电源5V | ||
+ | |- | ||
+ | |G || 地 | ||
+ | |} | ||
+ | |||
+ | ==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。 | ||
+ | |||
+ | ==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]] | ||
+ | |||
+ | 连接说明: | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |Matrix-IR_Counter || 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-IR_Counter_nanopi_m2.jpg|frameless|600px|Matrix-IR_Counter_nanopi_m2]] | ||
+ | |||
+ | 连接说明: | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |Matrix-IR_Counter || NanoPi M2 | ||
+ | |- | ||
+ | |S || Pin7 | ||
+ | |- | ||
+ | |V || Pin4 | ||
+ | |- | ||
+ | |G || Pin6 | ||
+ | |} | ||
+ | |||
+ | ===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]] | ||
+ | |||
+ | 连接说明: | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |Matrix-IR_Counter || 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> | ||
+ | 当有物体阻挡在模块中间时会检测到事件。 | ||
+ | |||
+ | ==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"); | ||
+ | return -1; | ||
+ | } | ||
+ | |||
+ | if (argc == 2) | ||
+ | dev[0].pin = atoi(argv[1]); | ||
+ | system("modprobe "DRIVER_MODULE); | ||
+ | signal(SIGINT, intHandler); | ||
+ | if (board == BOARD_NANOPI_T2) | ||
+ | dev[0].pin = GPIO_PIN(15); | ||
+ | printf("Use GPIO_PIN(%d)\n", dev[0].pin); | ||
+ | if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) { | ||
+ | printf("Fail to init sensor\n"); | ||
+ | goto err; | ||
+ | } | ||
+ | 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("Device[%d] value is %d\n", i, value[i]); | ||
+ | } | ||
+ | } | ||
+ | sensorDeinit(devFD); | ||
+ | err: | ||
+ | system("rmmod "DRIVER_MODULE); | ||
+ | return 0; | ||
+ | } | ||
+ | </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 15:02, 19 June 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... Device[0] value is 1
当有物体阻挡在模块中间时会检测到事件。
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"); return -1; } if (argc == 2) dev[0].pin = atoi(argv[1]); system("modprobe "DRIVER_MODULE); signal(SIGINT, intHandler); if (board == BOARD_NANOPI_T2) dev[0].pin = GPIO_PIN(15); printf("Use GPIO_PIN(%d)\n", dev[0].pin); if ((devFD =sensorInit(dev, ARRAY_SIZE(dev))) == -1) { printf("Fail to init sensor\n"); goto err; } 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("Device[%d] value is %d\n", i, value[i]); } } sensorDeinit(devFD); err: system("rmmod "DRIVER_MODULE); return 0; }
API说明参考维基:Matrix API reference manual