{"id":1626,"date":"2017-11-05T09:53:33","date_gmt":"2017-11-05T00:53:33","guid":{"rendered":"http:\/\/research.itplants.com\/?p=1626"},"modified":"2018-02-08T13:01:14","modified_gmt":"2018-02-08T04:01:14","slug":"1-wire%e3%81%ae%e7%9f%a5%e8%a6%8b","status":"publish","type":"post","link":"https:\/\/research.itplants.com\/?p=1626","title":{"rendered":"1-Wire\u306e\u77e5\u898b"},"content":{"rendered":"

1-Wire\u306e\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u30c7\u30d0\u30a4\u30b9\uff08DS18B20\uff09\u3092\u8907\u6570\u3001\u4f7f\u3046\u5834\u5408\u306e\u77e5\u898b\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n

DS18B20\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8<\/a>\u3067\u306f\u30014.7K\u03a9\u306e\u62b5\u6297\u3067\u30d7\u30eb\u30a2\u30c3\u30d7\u3059\u308b\u3068\u3042\u308a\u307e\u3059\u3002<\/p>\n

\"\"<\/a><\/p>\n

\u3057\u304b\u3057\u3001DS18B20\u3092\uff12\u3064\u4f7f\u3063\u305f\u5834\u5408\u306b\u306f\u3001\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u6e29\u5ea6\u5024\u304c\u3001127.937 deg \u3068\u304b\u30010.0 deg\u3068\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u3093\u306a\u6642\u306b\u306f\u3001\u30d7\u30eb\u30a2\u30c3\u30d7\u62b5\u6297\u30922K\u03a9\u306b\u5909\u66f4\u3059\u308b\u3068\u3001\u6b63\u3057\u3044\u5024\u304c\u8aad\u307f\u51fa\u305b\u307e\u3057\u305f\u3002<\/p>\n

\u307e\u305f\u3001\u3053\u3093\u306a\u30c8\u30e9\u30d6\u30eb\u3082\u3042\u308a\u307e\u3057\u305f\u3002VDD\u30e9\u30a4\u30f3\u306e\u65ad\u7dda\u6642\u306b\u3001\u8aad\u307f\u51fa\u3059\u5024\u304c\u3001\u4f55\u6545\u304b85\u5ea6\u3070\u304b\u308a\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u3067\u3059\u3002VDD\u30e9\u30a4\u30f3\u306e\u65ad\u7dda\u3092\u4fee\u7406\u3057\u305f\u3089\u6b63\u3057\u3044\u6e29\u5ea6\u5024\u304c\u8aad\u307f\u51fa\u305b\u307e\u3057\u305f\u3002<\/p>\n

\"\"<\/a><\/p>\n

\u4ee5\u4e0b\u306f\u3001\u8907\u6570\u306eDS18B20\u304b\u3089\u6e29\u5ea6\u5024\u3092\u8aad\u307f\u51fa\u3059Python\u30b3\u30fc\u30c9\u3067\u3059\u3002\uff17\u3064\u306eDS18B20\u304c\u4f7f\u3048\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n

DS18B20.py<\/p>\n

#!\/usr\/bin\/env python
\nimport os
\nimport glob
\nfrom time import sleep
\nimport datetime
\nfrom numpy import *<\/code><\/p>\n

os.system(‘modprobe w1-gpio’)<\/p>\n

base_dir = ‘\/sys\/bus\/w1\/devices\/’
\ndevice_folder = glob.glob(base_dir + ’28*’)
\ndevice_file=[0,1,2,3,4,5,6]<\/p>\n

for i in range(len(device_folder)):
\ndevice_file[i] = device_folder[i] + ‘\/w1_slave’<\/p>\n

def read_temp_raw(i):
\nf = open(device_file[i], ‘r’)
\nlines = f.readlines()
\nf.close()
\nreturn lines<\/p>\n

def read_temp(i):
\nlines = read_temp_raw(i)
\nwhile lines[0].strip()[-3:] != ‘YES’:
\nsleep(0.2)
\nlines = read_temp_raw(i)
\nequals_pos = lines[1].find(‘t=’)
\nif equals_pos != -1:
\ntemp_string = lines[1][equals_pos + 2:]
\ntemp_c = float(temp_string) \/ 1000.0
\nreturn temp_c<\/p>\n

try:
\n# while True:
\ntodaydetail = datetime.datetime.today()
\nprint todaydetail.strftime(‘\nfor i in range(len(device_folder)):
\nprint(device_folder[i].replace(base_dir,”)+’ ‘+str(read_temp(i))+’ deg ‘),
\n#sleep(1)
\nprint ”<\/p>\n

except KeyboardInterrupt:
\npass<\/p>\n","protected":false},"excerpt":{"rendered":"

1-Wire\u306e\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u30c7\u30d0\u30a4\u30b9\uff08DS18B20\uff09\u3092\u8907\u6570\u3001\u4f7f\u3046\u5834\u5408\u306e\u77e5\u898b\u3092\u66f8\u304d\u307e\u3059\u3002 DS18B20\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3067\u306f\u30014.7K\u03a9\u306e\u62b5\u6297\u3067\u30d7\u30eb\u30a2\u30c3\u30d7\u3059\u308b\u3068\u3042\u308a\u307e\u3059\u3002 \u3057\u304b\u3057\u3001DS18B20\u3092\uff12\u3064\u4f7f\u3063\u305f\u5834\u5408\u306b\u306f\u3001\u3046\u307e\u304f\u3044…<\/p>\n

Read more →<\/a><\/p>\n","protected":false},"author":1,"featured_media":1630,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/posts\/1626"}],"collection":[{"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/research.itplants.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1626"}],"version-history":[{"count":5,"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/posts\/1626\/revisions"}],"predecessor-version":[{"id":1685,"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/posts\/1626\/revisions\/1685"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/research.itplants.com\/index.php?rest_route=\/wp\/v2\/media\/1630"}],"wp:attachment":[{"href":"https:\/\/research.itplants.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/research.itplants.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/research.itplants.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}