Difference between revisions of "Matrix - Button/zh"
From FriendlyELEC WiKi
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} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| + | |||
| + | ===编译并运行示例=== | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | git clone http://github.com/friendlyarm/fa-hardware.git | ||
| + | cd fa-hardware | ||
| + | cd demo | ||
| + | cd button | ||
| + | make | ||
| + | </syntaxhighlight> | ||
| + | 将编译生成的button通过ftp上传到开发板上运行即可测试。 | ||
==相关资料== | ==相关资料== | ||
Revision as of 05:02, 10 July 2015
Contents
1 介绍
该按键在未按时输出高电平,按下后输出低电平。
2 特性
- 使用标准的3 PIN接口
- 尺寸为 8x24mm
3 使用方法
3.1 连接
- 连接到Tiny4412 SDK (1505)
- 将配件S针脚连接到GPIO PIN1, V接5V，G接地
3.2 Linux下的C示例
#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; }
3.3 编译并运行示例
git clone http://github.com/friendlyarm/fa-hardware.git cd fa-hardware cd demo cd button make
将编译生成的button通过ftp上传到开发板上运行即可测试。
