Difference between revisions of "Matrix - Relay"

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(介绍)
Line 10: Line 10:
 
* 触点电流可达10A
 
* 触点电流可达10A
 
* 2.54mm排针接口,接线方便,通用性强
 
* 2.54mm排针接口,接线方便,通用性强
 +
 +
==使用方法==
 +
===连接===
 +
*连接到Tiny4412 SDK (1506)
 +
::将配件S针脚连接到GPIO PIN1, V接5V,G接地
 +
 +
===Linux下的C示例===
 +
<syntaxhighlight lang="c">
 +
#include <stdio.h>
 +
#include <string.h>
 +
#include "libfahw.h"
 +
 +
int main(int argc, char ** argv)
 +
{
 +
    char *status = "off";
 +
    if (argc != 2) {
 +
        printf("Set relay on\n");
 +
    } else {
 +
        status = argv[1];
 +
        printf("Set relay %s\n", argv[1]);
 +
    }
 +
 +
    int pin = TINY4412_GPIO_PIN1;
 +
    int ret = -1;
 +
    if ((ret = exportGPIOPin(pin)) != 0) {
 +
        printf("exportGPIOPin(%d) failed!", pin);
 +
    }
 +
    if ((ret = setGPIODirection(pin, GPIO_OUT)) != 0) {
 +
        printf("setGPIODirection(%d) failed", pin);
 +
    }
 +
 +
    if (strcmp(status, "on") == 0) {
 +
        ret = setGPIOValue(pin, GPIO_LOW);
 +
    } else {
 +
        ret = setGPIOValue(pin, GPIO_HIGH);
 +
    }
 +
    return ret;
 +
}
 +
</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 matrix-relay
 +
make
 +
</syntaxhighlight>
 +
将编译生成的relay通过ftp上传到开发板上运行即可测试。
 +
 +
==相关资料==

Revision as of 09:02, 24 July 2015

查看中文

1 介绍

Relay

这是一个单刀双掷继电器,线圈电压为直流5V,触点电流可达10A,适合驱动直流或交流大功率负载。NO为常开触点,NC为常闭触点,COM为公共触点。当向S引脚施加高电平,继电器线圈导通,此时NO触点断开,NC触点闭合。

2 特性

  • 1 Form C
  • 5V线圈电压,控制信号为3.3/5V
  • 触点电流可达10A
  • 2.54mm排针接口,接线方便,通用性强

3 使用方法

3.1 连接

  • 连接到Tiny4412 SDK (1506)
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 <string.h>
#include "libfahw.h"
 
int main(int argc, char ** argv)
{
    char *status = "off";
    if (argc != 2) {
        printf("Set relay on\n");
    } else {
        status = argv[1];
        printf("Set relay %s\n", argv[1]);
    }
 
    int pin = TINY4412_GPIO_PIN1;
    int ret = -1;
    if ((ret = exportGPIOPin(pin)) != 0) {
        printf("exportGPIOPin(%d) failed!", pin);
    }
    if ((ret = setGPIODirection(pin, GPIO_OUT)) != 0) {
        printf("setGPIODirection(%d) failed", pin);
    }
 
    if (strcmp(status, "on") == 0) {
        ret = setGPIOValue(pin, GPIO_LOW);
    } else {
        ret = setGPIOValue(pin, GPIO_HIGH);
    }
    return ret;
}

3.3 编译并运行示例

git clone http://github.com/friendlyarm/fa-hardware.git
cd fa-hardware
cd demo
cd matrix-relay
make

将编译生成的relay通过ftp上传到开发板上运行即可测试。

4 相关资料