: , Senior Embedded Developer, DataArt, - , 0.5 DeviceHive ESP8266. , , : .
:
• IoT , DeviceHive.
• IoT : . 1-, .
• ESP8266 DeviceHive v 0.3.
•IoT : . 2, .
— DeviceHive ESP8266 0.5. , , , DeviceHive ESP8266. -. -, .
, ,
GitHub.
.
, .
1. RESTful API
80 HTTP- RESTful API. .
. , , 'gpio/read'. , RESTful API 'http://device-id.local/api/gpio/read' JSON, . (AccessKey), :
curl.
curl -i -X POST \
-H "Authorization: Bearer YourAccessKeyHere=" \
http:
, HTTP-. , . , . . . GET, POST — . , , , JSON.
2. mDNS
, , , esp-demo.local. Multicast Domain Name System, , mDNS , IP-. , , DNS- .
mDNS , DNS, UDP . . DeviceId ( ). DeviceId.local.
RFC6763, , mDNS. . , mDNS. , DeviceId 'esp-demo', 'avahi-discovery':
, , . .
3.
. . , DS18B20, , , , . . 'devices/ds18b20/read' JSON '{«temperature»:24.5000}'.
.
MPU-6050(, , ):
4. -
RESTful API HTTP-, -. , , . , 'http://deviceid.local/', - . , RESTful API (, base64), -, RESTful API ( ) , -. . 64.
, JavaScript - -. , .
DS18B20 -. GND 3V3 - GPIO-. GPIO2, . :
ESP8266, microUSB, USB-TTL. . , , . Micro-USB . , 3-4 .
-. - DS18B20. 'http://deviceid.local/ds18b20.html'. , , :
. , , - , -, .
, -, .
.<html>
<head>
<script type="text/javascript">
function send(onOff) {
localStorage['accesskey'] = document.getElementById('accesskey').value;
var xmlhttp = new XMLHttpRequest();
xmlhttp.open('POST', "http://" + window.location.hostname + '/api/gpio/write', true);
xmlhttp.setRequestHeader("Authorization", "Bearer " + localStorage['accesskey']);
xmlhttp.onreadystatechange = function() {
if(xmlhttp.readyState == 4){
if(xmlhttp.status < 200 || xmlhttp.status > 299) {
alert('ERROR: Command return ' + xmlhttp.status + ' ' + xmlhttp.responseText, true);
}
}
}
var json = {}
json["5"] = onOff ? 1 : 0;
xmlhttp.send(JSON.stringify(json));
}
function init() {
document.getElementById('accesskey').value = localStorage['accesskey'];
}
</script>
</head>
<body onload="init()">
<label>AccesKey: </label><input type="password" id="accesskey"><br><br>
<input type="button" value="On" onclick="send(true);"> <input type="button" value="Off" onclick="send(false);">
</body>
</html>
, localStorage, , . / XMLHttpRequest(), RESTful API.
. SSR-40DA, , 220 , . . . , , 40 . , :
, . , !