英特尔Edison MRAA模块不起作用 [英] Intel Edison MRAA module not working

问题描述

我最近下载了Intel XDK IOT版本，并使用了LED引脚13 Blink示例. 然后，我将程序上载到Edison，但出现了一些错误.其中之一是它找不到MRAA模块.随附的示例代码为: main.js:

I recently downloaded the Intel XDK IOT version and used the LED pin 13 Blink sample. I then uploaded the program onto the Edison, but it came up with a few errors; One of them being that it could not find the MRAA module. The sample code that came with it was: main.js:

var mraa = new require("mraa"); //require mraa
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the Intel XDK console

var myOnboardLed = new mraa.Gpio(13); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2)
myOnboardLed.dir(mraa.DIR_OUT); //set the gpio direction to output
var ledState = true; //Boolean to hold the state of Led

periodicActivity(); //call the periodicActivity function

function periodicActivity()
{
  myOnboardLed.write(ledState?1:0); //if ledState is true then write a '1' (high) otherwise write a '0' (low)
  ledState = !ledState; //invert the ledState
  setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds)
}

package.JSON:

package.JSON:

{
  "name": "Onboard LED Blink App",
  "description": "",
  "version": "0.0.0",
  "main": "main.js",
  "engines": {
    "node": ">=0.10.0"
  },
  "dependencies": {
  }
}

推荐答案

echo"src mraa-upm http://iotdk.intel.com/repos/1.1/intelgalactic >/etc/opkg/mraa-upm.conf opkg更新 opkg安装libmraa0

echo "src mraa-upm http://iotdk.intel.com/repos/1.1/intelgalactic" > /etc/opkg/mraa-upm.conf opkg update opkg install libmraa0

以上答案有错别字 它应该是"mraa"而不是"maa" 和opkg不好

the above answer has typos it should be "mraa" not "maa" and opkg not okpg

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