{"id":31448,"date":"2019-01-24T23:13:57","date_gmt":"2019-01-24T22:13:57","guid":{"rendered":"http:\/\/www.akehedman.se\/wordpress\/?p=31448"},"modified":"2019-01-24T23:14:06","modified_gmt":"2019-01-24T22:14:06","slug":"pust-fras","status":"publish","type":"post","link":"https:\/\/www.akehedman.se\/wordpress\/?p=31448","title":{"rendered":"Pust fr\u00e4s"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Sitter h\u00e4r och knappar. \u00d6gonen \u00e4r som sandl\u00e5dor. Hur man \u00e4n gnuggar dem med knogarna s\u00e5 blir det sand kvar.<\/p>\n\n\n\n

Det blir m\u00e5nga rader kod nu. Massor. Jag h\u00e5ller n\u00e4mligen p\u00e5 med n\u00e5got jag kallare remote variables<\/strong>. Gammalt nu. Men \u00e4nd\u00e5. Skriver om. Man kan kanske kalla dem VSCP variabel ocks\u00e5 om man vill. Ja eller skitvariabler. All namn duger Men jag gillar dem s\u00e5klart. Fj\u00e4rrvariabler p\u00e5 Svenska kanske?<\/p>\n\n\n\n

En fj\u00e4rr variabel, som \u00e4r starkt typad, \u00e4r en abstraktion f\u00f6r en inst\u00e4llning eller t.ex ett m\u00e4tv\u00e4rde. T.ex kan alla inst\u00e4llningar f\u00f6r den server som anv\u00e4nds f\u00f6r VSCP (VSCP Daemon) g\u00f6ras genom att l\u00e4sa\/skriva dom h\u00e4r variablerna. Eftersom VSCP Daemon (h\u00e4danefter demonen) har olika interface mot omv\u00e4rlden (tcp\/ip, udp, rest, websockets…) s\u00e5 kan man, om man l\u00e4gger in l\u00e4sning och skrivning av fj\u00e4rr variabler, hantera dem i alla interface som demonen har. Ja en del av dem kan exekveras ocks\u00e5. Men s\u00e4g det inte till n\u00e5gon.<\/p>\n\n\n\n

I vissa interface t.ex websockets, kan man prenumerera p\u00e5 en variabel. Typisk anv\u00e4nt om man vill visa ett m\u00e4tv\u00e4rde i ett HTML\/Javascript UI. M\u00e4tdatan levereras till UI’t snyggt och prydligt. Man beh\u00f6ver bara ta emot den d\u00e4r uppdateringen. <\/p>\n\n\n\n

En IOT enhet kan allts\u00e5 s\u00e4tta eller l\u00e4sa en fj\u00e4rrvariabel genom n\u00e5got av interfacen. Men det kan ocks\u00e5 ske genom inkomna event fr\u00e5n en drivare som \u00e4r laddad i demonen. Drivare \u00e4r interfacet till omv\u00e4rlden. Kanske till en CAN bus, en RS-485 bus eller Bl\u00e5tand. Eller till en viss teknologi. Den g\u00f6r teknologin s\u00e5 att den ser ut som om den var en VSCP medveten rackare. Hur som helst, fr\u00e5n allt det d\u00e4r kommer VSCP event. Till dem skickas VSCP event. Enkla v\u00e4ldefinierad saker. Vilken teknologi som \u00e4n anv\u00e4nds, vilka enheter som \u00e4n skickas s\u00e5 blir det ett standardiserat VSCP event d\u00e4r p\u00e5 andra sidan och tv\u00e4rt om. Hemskheter, eftersom allt helt pl\u00f6tsligt kan prata med allt annat om det bara finns en drivare. Nej, nej, nej, s\u00e5nt vill vi INTE ha!<\/p>\n\n\n\n

Fast varf\u00f6r ber\u00e4ttar jag egentligen det h\u00e4r h\u00e4r…? <\/p>\n\n\n\n

Har ingen aning s\u00e5klart. Skyller p\u00e5 tr\u00f6tthet och grus i \u00f6gonen. Det d\u00e4r \u00e4r i alla fall vad jag pysslar med just nu. Fast nu “God natt!”<\/p>\n","protected":false},"excerpt":{"rendered":"

Sitter h\u00e4r och knappar. \u00d6gonen \u00e4r som sandl\u00e5dor. Hur man \u00e4n gnuggar dem med knogarna s\u00e5 blir det sand kvar. Det blir m\u00e5nga rader kod nu. Massor. Jag h\u00e5ller n\u00e4mligen p\u00e5 med n\u00e5got jag kallare remote variables. Gammalt nu. Men \u00e4nd\u00e5. Skriver om. Man kan kanske kalla dem VSCP variabel ocks\u00e5 om man vill. Ja […]<\/p>\n","protected":false},"author":24,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[24,6],"tags":[],"class_list":["post-31448","post","type-post","status-publish","format-standard","hentry","category-betraktelser","category-vscp"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":22252,"url":"https:\/\/www.akehedman.se\/wordpress\/?p=22252","url_meta":{"origin":31448,"position":0},"title":"Den ljusnande framtid \u00e4r (s)v\u00e5r","author":"\u00c5ke Hedman","date":"2016-11-24","format":false,"excerpt":"VARNING!!! 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Kanske \u00e4r det bara \u00e5lder som g\u00f6r sig p\u00e5mind. Kanske \u00e4r det influensa. Kanske \u00e4r det en uttr\u00f6ttad j\u00e4vel bara. Men st\u00e4dar g\u00f6r jag. Inte kontor. Men l\u00e4genhet. Det g\u00e5r hyfsat. Kanske f\u00f6r att g\u00e5rdagskv\u00e4llen blev soffan framf\u00f6r tv'n. 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Jod\u00e5 h\u00e4r f\u00e5r man s\u00e4tta p\u00e5 kaffe sj\u00e4lv. Betj\u00e4ning saknas liksom andra arbetskamrater \u00e4n katt och sp\u00f6ken. Ja ingen stor sak s\u00e5klart. Att s\u00e4tta p\u00e5\u2026","rel":"","context":"In "Betraktelser & Ber\u00e4ttelse"","block_context":{"text":"Betraktelser & Ber\u00e4ttelse","link":"https:\/\/www.akehedman.se\/wordpress\/?cat=24"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.akehedman.se\/wordpress\/wp-content\/uploads\/2017\/11\/IMG_20171112_165218397-768x1024.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.akehedman.se\/wordpress\/wp-content\/uploads\/2017\/11\/IMG_20171112_165218397-768x1024.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.akehedman.se\/wordpress\/wp-content\/uploads\/2017\/11\/IMG_20171112_165218397-768x1024.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":8998,"url":"https:\/\/www.akehedman.se\/wordpress\/?p=8998","url_meta":{"origin":31448,"position":4},"title":"#VSCP & Friends blir ton\u00e5ring idag. #iot #m2m #homeautomation","author":"\u00c5ke Hedman","date":"2013-08-28","format":false,"excerpt":"Tretton \u00e5r, ton\u00e5ring \u00e4r hon\/han\/det VSCP & Friends fr\u00e5n och med idag. 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