该项目使用 Apple 的 homekit 和树莓派 ( https://github.com/KhaosT/HAP-NodeJS ) 上的 node.js 服务器来打开/关闭设备等。所以 Light_accessory.js，当 vaule 为 true(1) 时，使用子进程和接线 pi 打开灯(继电器)。当值为 false(0)时，还需要关闭灯(gpio write 7 1)。 Iv 尝试添加“可能等于”，这样它也会关闭灯(继电器)。尝试添加两个值是我和一夜的谷歌搜索和语法错误的结果。 我在这个项目上花费的时间比我愿意承认的要多。很简单，这个目标与我不久前用 php 做的一个项目非常相似。
?php
if(isset($_GET['trigger']) && $_GET['trigger'] == 1) {
error_reporting(E_ALL);
exec('gpio write 7 0');
}
if(isset($_GET['trigger']) && $_GET['trigger'] == 2) {
error_reporting(E_ALL);
exec('gpio write 7 1');
}
?>
...................................................... ...................................................... ...................................................... …………
这是当值为 true(1) 时将 gpio 设置为低电平(gpio write 7 0)的位置。
{
cType: types.POWER_STATE_CTYPE,
onUpdate: function(value) {
exec('gpio write 7 0' + value,function(error, stdout, stderr) {}
);
},
perms: ["pw", "pr", "ev"],
format: "bool",
initialValue: false,
supportEvents: false,
supportBonjour: false,
manfDescription: "Turn On the Light",
designedMaxLength: 1
}, {
如何添加
exec('gpio write 7 1'(error, stdout, stderr)
javascript中什么时候值为0？这样灯(继电器)也会关闭。
...................................................... ...................................................... ...................................................... …………
Light_accessory.js 的粗略概述；顶部主要是产品描述而不是实际功能。 “OnUpdate:”下的“cType: types.POWER_STATE_CTYPE”就是神奇发生的地方。
...................................................... ...................................................... ...................................................... …………
完整的 Light_accessory 脚本
// HomeKit types required
var types = require("./types.js")
var exports = module.exports = {};
var exec = require('child_process').exec;
var execute = function(accessory, characteristic, value) {
console.log("executed accessory: " + accessory + ", and characteristic: " + characteristic + ", with value: " + value + ".");
}
exports.accessory = {
displayName: "Light 1",
username: "1A:2B:3C:4D:5E:FF",
pincode: "031-45-154",
services: [{
sType: types.ACCESSORY_INFORMATION_STYPE,
characteristics: [{
cType: types.NAME_CTYPE,
onUpdate: null,
perms: ["pr"],
format: "string",
initialValue: "Light 1",
supportEvents: false,
supportBonjour: false,
manfDescription: "Bla",
designedMaxLength: 255
}, {
cType: types.MANUFACTURER_CTYPE,
onUpdate: null,
perms: ["pr"],
format: "string",
initialValue: "Oltica",
supportEvents: false,
supportBonjour: false,
manfDescription: "Bla",
designedMaxLength: 255
}, {
cType: types.MODEL_CTYPE,
onUpdate: null,
perms: ["pr"],
format: "string",
initialValue: "Rev-1",
supportEvents: false,
supportBonjour: false,
manfDescription: "Bla",
designedMaxLength: 255
}, {
cType: types.SERIAL_NUMBER_CTYPE,
onUpdate: null,
perms: ["pr"],
format: "string",
initialValue: "A1S2NASF88EW",
supportEvents: false,
supportBonjour: false,
manfDescription: "Bla",
designedMaxLength: 255
}, {
cType: types.IDENTIFY_CTYPE,
onUpdate: null,
perms: ["pw"],
format: "bool",
initialValue: false,
supportEvents: false,
supportBonjour: false,
manfDescription: "Identify Accessory",
designedMaxLength: 1
}]
}, {
sType: types.LIGHTBULB_STYPE,
characteristics: [{
cType: types.NAME_CTYPE,
onUpdate: null,
perms: ["pr"],
format: "string",
initialValue: "Light 1",
supportEvents: false,
supportBonjour: false,
manfDescription: "Bla",
designedMaxLength: 255
}, {
cType: types.POWER_STATE_CTYPE,
onUpdate: function(value) {
exec('gpio write 7 0' + value,function(error, stdout, stderr) {}
);
},
perms: ["pw", "pr", "ev"],
format: "bool",
initialValue: false,
supportEvents: false,
supportBonjour: false,
manfDescription: "Turn On the Light",
designedMaxLength: 1
}, {
cType: types.HUE_CTYPE,
onUpdate: function(value) {
console.log("Change:", value);
execute("Test Accessory 1", "Light - Hue", value);
},
perms: ["pw", "pr", "ev"],
format: "int",
initialValue: 0,
supportEvents: false,
supportBonjour: false,
manfDescription: "Adjust Hue of Light",
designedMinValue: 0,
designedMaxValue: 360,
designedMinStep: 1,
unit: "arcdegrees"
}, {
cType: types.BRIGHTNESS_CTYPE,
onUpdate: function(value) {
console.log("Change:", value);
execute("Test Accessory 1", "Light - Brightness", value);
},
perms: ["pw", "pr", "ev"],
format: "int",
initialValue: 0,
supportEvents: false,
supportBonjour: false,
manfDescription: "Adjust Brightness of Light",
designedMinValue: 0,
designedMaxValue: 100,
designedMinStep: 1,
unit: "%"
}, {
cType: types.SATURATION_CTYPE,
onUpdate: function(value) {
console.log("Change:", value);
execute("Test Accessory 1", "Light - Saturation", value);
},
perms: ["pw", "pr", "ev"],
format: "int",
initialValue: 0,
supportEvents: false,
supportBonjour: false,
manfDescription: "Adjust Saturation of Light",
designedMinValue: 0,
designedMaxValue: 100,
designedMinStep: 1,
unit: "%"
}]
}]
}
最佳答案
Fromm 自己摆弄这个包，我确实注意到该值是“true”或“false”而不是 1 或 0
尝试检查 true 然后写出 1
值 == true ？ 1:0
根据要求，这里使用您的示例。
{
cType:类型.POWER_STATE_CTYPE，
onUpdate: 函数(值) {
exec('gpio write 7 0 ' + (value == true ? 1 : 0) ,function(error, stdout, stderr) {}
)；
},
权限:[“pw”，“pr”，“ev”]，
格式:“ bool ”，
初始值:假，
支持事件:假，
支持 Bonjour: false,
manf描述:“打开灯”，
设计最大长度:1
}
关于javascript - 很难理解 Javascript 中的 "Probably Equals"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27930473/