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{"id":1,
"date":"2017-05-23T06:25:50",
"date_gmt":"2017-05-23T06:25:50",
"guid":{"rendered":"http://demo.wp-api.org/?p=1"},
"modified":"2017-05-23T06:25:50",
"modified_gmt":"2017-05-23T06:25:50",
"slug":"hello-world",
"status":"publish",
"type":"post",
"link":"https://demo.wp-api.org/2017/05/23/hello-world/",
"title":{"rendered":"Hello world!"},
"content":{"rendered":"<p>Welcome to...

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add_action( 'rest_api_init', function () {
register_rest_route( 'anything/v1', '/get',
array(
'methods' => 'GET',
'callback' => 'get_anything_awesome',
) );
} );
function get_anything_awesome() {
$data = array('result' => 'great data');
return new WP_REST_Response( $data, 200 );
}

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http://example.net/wp-json/
anything/v1/get
{"result":"great data"}

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$ sudo apt install git
libgraphicsmagick++-dev
libwebp-dev

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$ git clone https://github.com/
hzeller/rpi-rgb-led-matrix
$ cd rpi-rgb-led-matrix
$ make -C examples-api-use
$ cd utils
$ make led-image-viewer

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$ cd example-api-use
$ sudo ./demo
--led-gpio-mapping=adafruit-hat
--led-no-hardware-pulse
--led-chain=4 -L
-D 0

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$ sudo ./demo
--led-gpio-mapping=adafruit-hat
--led-no-hardware-pulse
--led-chain=4 -L
-D 1 ../../images/wapuu.ppm

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add_action( 'rest_api_init', function () {
register_rest_route( 'wapuu/v1', '/set/(?P<id>d+)', array(
'methods' => 'POST',
'callback' => 'set_wapuu_image',
'args' => array(
'id' => array(
'validate_callback' => function($param, $request, $key) {
return is_numeric( $param );
}
),
),
) );
register_rest_route( 'wapuu/v1', '/get', array(
'methods' => 'GET',
'callback' => 'get_wapuu_image',
) );
} );

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function set_wapuu_image( $data ) {
$id = $data['id'];
update_post_meta( 60, 'wapuu-image', $id );
$data = array( 'id' => $id );
return new WP_REST_Response( $data, 200 );
}
function get_wapuu_image() {
$id = get_post_meta( 60, 'wapuu-image');
$data = array( 'id' => $id );
return new WP_REST_Response( $data, 200 );
}

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http://example.net/wp-json/
wapuu/v1/get
{"id":"001"}

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api="http://example.net/wp-json/wapuu/v1/get"
def img_number():
try:
html = urllib.urlopen( api ).read()
except:
return None
data = json.loads(html)
return data['id']

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image_dir = "~/wapuu/"
viewer = "~/rpi-rgb-led-matrix/utils/led-image-viewer"
opt = " --led-daemon --led-gpio-mapping=adafruit-hat" +
" --led-no-hardware-pulse --led-chain=4 -L"
prev = None
while True:
time.sleep(2)
number = img_number()
if number is None: continue
files = glob.glob(image_dir+number+"-*.png")
if len(files) < 1: continue
if files[0] == prev: continue
if prev is not None: kill_img()
commands.getstatusoutput("sudo "+viewer+opt+files[0])
prev = files[0]

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pattern = r"^ *(d+) .*/led-image-viewer"
def kill_img ():
id = []
ps_list = commands.getoutput('ps awx')
for process in ps_list.split("n"):
match = re.match(pattern, process)
if not match: continue
id.append(match.group(1))
commands.getoutput("sudo kill "+" ".join(id))

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<form method="post"
action="/wp-json/wapuu/v1/set/001">
<div>[caption id="attachment_40"
align="alignleft" width="150"]
<img src="/wp-content/uploads/
2017/09/001-original-150x150.png"
alt="001" width="150" height="150"
class="size-thumbnail wp-image-40" />
Original (WordCamp 2011 Fukuoka)<br>
<button type="submit" value="001">
Submit</button>
[/caption]</div></form>

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from sense_hat import SenseHat
sense = SenseHat()
temp = sense.get_temperature()
print("Temperature: %s C" % temp)
humi = sense.get_humidity()
print("Humidity: %s %%rH" % humi)

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0.81Td +0.01H(0.99Td -14.3) +46.3
Td: Temp (℃)
H: Humidity

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add_action( 'init', 'create_fever_log_type' );
function create_fever_log_type() {
register_post_type( 'fever_log',
array(
'labels' => array(
'name' => __( 'Fever' ),
'singular_name' => __( 'Fever' )
),
'public' => true,
'has_archive' => true,
)
);
}

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/wp-json/fever/v1/log
/wp-json/fever/v1/history

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add_action('rest_api_init', function () {
register_rest_route('fever/v1', '/log/',
array(
'methods' => 'POST',
'callback' => 'log_fever_value',
) );
register_rest_route('fever/v1' '/history/',
array(
'methods' => 'GET',
'callback' => 'get_fever_history',
) );
} );

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function log_fever_value() {
$obj = json_decode($_POST);
$t = $obj['temp'];
$h = $obj['humi'];
$data = array();
if (! is_numeric($t) || ! is_numeric($h) ) {
return new WP_REST_Response($data, 400);
}
$json=json_encode(array('temp'=>$t,'humi'=>$h));
$discomf = $t*0.81+$h*($t*0.99-14.3)*0.01+46.3;

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$post = array(
'post_type' => 'fever_log',
'post_name' => 'fever_log',
'post_content' => $json,
'post_title' => $discomf,
);
$post_ID = wp_insert_post($post);
if (! $post_ID ) {
return new WP_REST_Response($data, 500);
}
$data['post_ID'] = $post_ID;
return new WP_REST_Response($data, 200);
}

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function get_fever_history() {
$num = 360;
$args = array (
'post_type' => 'fever_log',
'numberposts' => $num,
'offset' => 0,
'orderby' => 'date',
'order' => 'ASC',
);
$posts = get_posts($args);

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$data = array();
foreach ( $posts as $p ) {
setup_postdata( $p );
$data[] = array(
'date' => get_the_date('Y/m/d H:i:s'),
'discomfort' => floatval(get_the_title()),
);
}
return new WP_REST_Response($data,200);
}

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[
{"datetime":"2018/06/01 22:25:11",
"discomfort":83.0214384153},
{"datetime":"2018/06/01 22:25:35",
"discomfort":83.3682958288},
{"datetime":"2018/06/02 09:12:00",
"discomfort":82.3637111865}
]

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#!/usr/bin/python
api="http://example.net/wp-json/fever/v1/log"
import requests
from sense_hat import SenseHat
sense = SenseHat()
temp = sense.get_temperature()
humi = sense.get_humidity()
env = '{"temp":%f, "humi":%f}' % (temp, humi)
response = requests.post(api, env,
headers={'Content-Type': 'application/json'}
)

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$ crontab -e
*/5 * * * * /home/pi/log-env.py
{"temp":30.190403,
"humi":41.724270}

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<html><head>
<script type="text/javascript" src="dygraph.js">
</script>
<link rel="stylesheet" src="dygraph.css" />
</head>
<body>
<div id="graphdiv"></div>
<script type="text/javascript">
g = new Dygraph(
document.getElementById("graphdiv"),
// CSV data.
);
</script>
</body>
</html>

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add_action('wp_enqueue_scripts','dygraph_styles');
function dygraph_styles() {
wp_enqueue_style(
'child-style',
get_stylesheet_directory_uri().'/dygraph.css');
wp_enqueue_script(
'dygraph',
get_stylesheet_directory_uri().'/dygraph.js');
}

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<div id="graphdiv"></div>
<script type="text/javascript">
g = new Dygraph(
// containing div
document.getElementById("graphdiv"),
// CSV or path to a CSV file.
"Time,Fevern" +
"2018-06-02 10:15:07,77.258414n" +
"2018-06-02 10:16:08,77.554262n" +
"2018-06-02 10:17:10,77.680172n" +
"2018-06-02 10:18:02,77.825666n" +
"2018-06-02 10:20:04,78.359325n" +
"2018-06-02 10:25:03,79.242797n"
);
</script>

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