Difference between revisions of "Matrix - Ball Rolling Switch/zh"
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3-Pin 2.54mm排针,V接电源,G接地,S为模块数字信号输出,当开关倾斜,开关内的金属球珠滚动到开关一侧,导通触点时,开关输出高电平到施密特触发器,再通过触发器内部的逆变器反向,模块输出低电平;当开关内的金属球珠滚动到开关的另一侧,断开触点时,滚珠开关输出低电平到施密特触发器,触发器内部的逆变器反向,此时,模块输出高电平。 | 3-Pin 2.54mm排针,V接电源,G接地,S为模块数字信号输出,当开关倾斜,开关内的金属球珠滚动到开关一侧,导通触点时,开关输出高电平到施密特触发器,再通过触发器内部的逆变器反向,模块输出低电平;当开关内的金属球珠滚动到开关的另一侧,断开触点时,滚珠开关输出低电平到施密特触发器,触发器内部的逆变器反向,此时,模块输出高电平。 | ||
− | == | + | ==硬件连接== |
− | + | ===连接NanoPi M1=== | |
− | + | 参考下图连接模块:<br> | |
− | + | [[File:Matrix-Ball_Rolling_Switch_nanopi_m1.jpg|frameless|600px|matrix-BAll_Rolling_Switch_nanopi_m1]] | |
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− | + | 连接说明: | |
− | + | {| class="wikitable" | |
− | + | |- | |
− | + | |Matrix-Ball_Rolling_Switch || NanoPi M1 | |
− | + | |- | |
− | + | |S || Pin7 | |
− | + | |- | |
− | + | |V || Pin4 | |
− | + | |- | |
− | + | |G || Pin6 | |
+ | |} | ||
− | == | + | ===连接NanoPi 2=== |
− | + | 参考下图连接模块:<br> | |
− | + | ||
[[File:matrix-BAll Rolling Switch_nanopi.jpg|frameless|600px|matrix-BAll Rolling Switch_nanopi2]] | [[File:matrix-BAll Rolling Switch_nanopi.jpg|frameless|600px|matrix-BAll Rolling Switch_nanopi2]] | ||
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{| class="wikitable" | {| class="wikitable" | ||
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− | |Matrix-Ball_Rolling_Switch || | + | |Matrix-Ball_Rolling_Switch || NanoPi 2 |
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|S || Pin7 | |S || Pin7 | ||
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|} | |} | ||
− | === | + | ===连接NanoPi M2 / NanoPi 2 Fire=== |
− | + | NanoPi M2和NanoPi 2 Fire的40Pin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-Ball_Rolling_Switch_nanopi_m2.jpg|frameless|600px|Matrix-Ball_Rolling_Switch_nanopi_m2]] | |
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连接说明: | 连接说明: | ||
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|} | |} | ||
− | === | + | ===连接NanoPi 2=== |
− | + | 参考下图连接模块:<br> | |
− | + | [[File:Matrix-Ball_Rolling_Switch_NanoPC-T2.jpg|frameless|600px|Matrix-Ball_Rolling_Switch_NanoPC-T2]] | |
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连接说明: | 连接说明: | ||
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|Matrix-Ball_Rolling_Switch || NanoPC-T2 | |Matrix-Ball_Rolling_Switch || NanoPC-T2 | ||
|- | |- | ||
− | |S || | + | |S || Pin15 |
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|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> | ||
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− | + | 运行测试程序: | |
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<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
− | $ | + | $ matrix-ball_switch |
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</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"> | ||
− | + | Lean the switch... | |
− | + | Switch[0]: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(brSwitch)]; | char value[ARRAY_SIZE(brSwitch)]; | ||
− | |||
if (argc == 2) { | if (argc == 2) { | ||
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printf("Using GPIO_PIN(%d)\n", brSwitch[0].pin); | printf("Using GPIO_PIN(%d)\n", brSwitch[0].pin); | ||
+ | if ((board = boardInit()) < 0) | ||
+ | printf("Fail to init board\n"); | ||
+ | system("modprobe "DRIVER_MODULE); | ||
+ | signal(SIGINT, intHandler); | ||
+ | if (board == BOARD_NANOPI_T2) | ||
+ | brSwitch[0].pin = GPIO_PIN(15); | ||
if ((devFD =sensorInit(brSwitch, ARRAY_SIZE(brSwitch))) == -1) { | if ((devFD =sensorInit(brSwitch, ARRAY_SIZE(brSwitch))) == -1) { | ||
printf("Fail to init sensor\n"); | printf("Fail to init sensor\n"); | ||
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} | } | ||
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== | ==相关资料== | ||
*[Schematic]([http://wiki.friendlyarm.com/wiki/images/0/00/TIL-01-1511-Schematic.pdf Matrix - Ball Rolling Switch-Schematic.pdf]) | *[Schematic]([http://wiki.friendlyarm.com/wiki/images/0/00/TIL-01-1511-Schematic.pdf Matrix - Ball Rolling Switch-Schematic.pdf]) |
Revision as of 08:15, 20 May 2016
Contents
1 介绍
- Matrix-Ball_Rolling_Switch是一个滚珠开关模块,电气特性与水银开关近似,解决了水银开关易破损、氧化、漏气、寿命短、污染环境等弊端。
- 开关本身无方向,360°任何一个方向倾斜到一定的角度(15°-45°)时,就会产生一个开关信号,信号传入施密特触发器反向后输出。
2 特性
- GPIO
- 体积小巧
- 2.54mm排针接口
- PCB尺寸(mm):16x16
- 引脚说明:
名称 | 描述 |
S | 数字GPIO |
V | 电源5V |
G | 地 |
3 工作原理
3-Pin 2.54mm排针,V接电源,G接地,S为模块数字信号输出,当开关倾斜,开关内的金属球珠滚动到开关一侧,导通触点时,开关输出高电平到施密特触发器,再通过触发器内部的逆变器反向,模块输出低电平;当开关内的金属球珠滚动到开关的另一侧,断开触点时,滚珠开关输出低电平到施密特触发器,触发器内部的逆变器反向,此时,模块输出高电平。
4 硬件连接
4.1 连接NanoPi M1
连接说明:
Matrix-Ball_Rolling_Switch | NanoPi M1 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.2 连接NanoPi 2
连接说明:
Matrix-Ball_Rolling_Switch | NanoPi 2 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.3 连接NanoPi M2 / NanoPi 2 Fire
NanoPi M2和NanoPi 2 Fire的40Pin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-Ball_Rolling_Switch | NanoPi M2 |
S | Pin7 |
V | Pin4 |
G | Pin6 |
4.4 连接NanoPi 2
参考下图连接模块:
Matrix-Ball_Rolling_Switch_NanoPC-T2
连接说明:
Matrix-Ball_Rolling_Switch | 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-ball_switch
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:
Lean the switch... Switch[0]: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(brSwitch)]; if (argc == 2) { brSwitch[0].pin = atoi(argv[1]); } printf("Using GPIO_PIN(%d)\n", brSwitch[0].pin); if ((board = boardInit()) < 0) printf("Fail to init board\n"); system("modprobe "DRIVER_MODULE); signal(SIGINT, intHandler); if (board == BOARD_NANOPI_T2) brSwitch[0].pin = GPIO_PIN(15); if ((devFD =sensorInit(brSwitch, ARRAY_SIZE(brSwitch))) == -1) { printf("Fail to init sensor\n"); return -1; } printf("Lean the switch...\n"); if ((retSize = sensorRead(devFD, value, ARRAY_SIZE(brSwitch))) == -1) { printf("Fail to read sensors\n"); } if (retSize > 0) { i = 0; for (i=0; i<retSize; i++) { printf("Switch[%d]:%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 相关资料
- [Schematic](Matrix - Ball Rolling Switch-Schematic.pdf)