{"id":1216,"date":"2017-03-11T12:49:46","date_gmt":"2017-03-11T11:49:46","guid":{"rendered":"http:\/\/www.xpablo.cz\/?p=1216"},"modified":"2017-03-11T12:49:46","modified_gmt":"2017-03-11T11:49:46","slug":"tolora-lora-komunikace-pro-turris-omnia","status":"publish","type":"post","link":"https:\/\/www.xpablo.cz\/?p=1216","title":{"rendered":"TOLoRa – LoRa komunikace pro Turris Omnia"},"content":{"rendered":"

\"\"<\/a>Tento projekt vznikl tro\u0161ku netradi\u010dn\u011b – za\u010d\u00e1tek tohoto roku jsem tr\u00e1vil upoutan\u00fd na l\u016f\u017eku, ale – asi to v\u011bt\u0161ina z v\u00e1s zn\u00e1 – p\u0159es to, \u017ee je t\u011blu mizern\u011b, tak mozek se zastavit ned\u00e1. Obklopen\u00fd \u010dl\u00e1nky z internetu o long range bezdr\u00e1tov\u00fdch komunikac\u00edch a neslavn\u00e9m konci projektu Turris Gadgets jsem dostal n\u00e1pad, p\u0159isp\u011bt tak\u00e9 svoj\u00ed tro\u0161kou do ml\u00fdna. Stanovil jsem si n\u00e1sleduj\u00edc\u00ed c\u00edle:<\/p>\n

    \n
  1. NEd\u011blat za\u0159\u00edzen\u00ed ve form\u011b USB donglu – jednak to zab\u00edr\u00e1 cenn\u00fd USB port a druhak to na m\u011b p\u016fsob\u00ed jako nouzov\u00e9 \u0159e\u0161en\u00ed, kdy\u017e jsou zde jin\u00e9 mo\u017enosti p\u0159ipojen\u00ed<\/li>\n
  2. Nau\u010dit se (\u010dti „pohr\u00e1t si s“) n\u011bjak\u00fd zaj\u00edmav\u00fd mikrokontrol\u00e9r, se kter\u00fdm jsem je\u0161t\u011b nepracoval<\/li>\n
  3. Roz\u0161\u00ed\u0159it svoje znalosti o Embedded Linuxu<\/li>\n<\/ol>\n

    Jakmile se mi tedy ud\u011blalo natolik dob\u0159e, \u017ee jsem mohl zasednout k po\u010d\u00edta\u010di, dal jsem dohromady za\u0159\u00edzen\u00ed, kter\u00e9 v\u00e1m p\u0159edkl\u00e1d\u00e1m…<\/p>\n

    <\/p>\n

    Abych dodr\u017eel bod 1 pl\u00e1nu, rozhodl jsem se po studiu sch\u00e9matu Turris Omnia vytvo\u0159it za\u0159\u00edzen\u00ed ve form\u00e1tu Mini PCI-E karty, kter\u00e1 je ve standardn\u011b osazen\u00e9m Turrisu voln\u00e1 pro GSM modem. V\u011bt\u0161ina lid\u00ed o\u010dek\u00e1v\u00e1 od PCI-E slo\u017eit\u00fd HW, jenom\u017ee tak to nemus\u00ed b\u00fdt – slot obsahuje i rozhran\u00ed, kter\u00e9 jsou v b\u011b\u017en\u00fdch mikrokontrol\u00e9rech (USB, I2C\/SMB) jak uk\u00e1zal skv\u011bl\u00fd projekt PCIeDuino<\/a> – mimochodem layout desky jsem p\u0159evzal pr\u00e1v\u011b z PCIeDina – many thanks Gergley for Your great work!<\/p>\n

    Druh\u00fd bod se mi poda\u0159ilo splnit t\u00edm, \u017ee jsem objevil procesor Atmel SAMD21 – Cortex M0 j\u00e1dro, flash i RAM o dostate\u010dn\u00e9 velikosti, v\u00fdkon pro b\u011bh LoRa gateway tak\u00e9 dostate\u010dn\u00fd, nav\u00edc je procesor levn\u011bj\u0161\u00ed, ne\u017e ATmega328P.<\/p>\n

    Celkov\u00e9 zapojen\u00ed je KISS (Keep It Stupid Simple) a v podstat\u011b k n\u011bmu nen\u00ed co \u0159\u00edct:<\/p>\n

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

    Prakticky jde o katalogov\u00e9 zapojen\u00ed procesoru s p\u0159ipojen\u00fdm USB a I2C rozhran\u00edm na Mini PCI-e konektor, RFM69\/RFM95 r\u00e1diov\u00fdm modulem a JTAG konektorem. Za jedinou zm\u00ednku, nebo sp\u00ed\u0161e vysv\u011btlen\u00ed, stoj\u00ed stabiliz\u00e1tor 3V3 a USB rozhran\u00ed, vyveden\u00e9 na h\u0159eb\u00ednek – oboj\u00ed je pro fin\u00e1ln\u00ed produkt zbyte\u010dn\u00e9 a slou\u017e\u00ed jen k usnadn\u011bn\u00ed lad\u011bn\u00ed firmware mimo Turris Omnia (nebyl jsem si jist\u00fd – a st\u00e1le nejsem – dostupnost\u00ed p\u0159ekl\u00e1dac\u00edch n\u00e1stroj\u016f p\u0159\u00edmo na TO, pota\u017emo OpenWRT platform\u011b). Moje „lad\u00edc\u00ed“ sestava tedy vypad\u00e1 n\u011bjak takto:<\/p>\n

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

    Plo\u0161n\u00fd spoj je navr\u017een\u00fd v Kicadu, vyroben\u00fd v SeeedStudiu a osazen\u00fd na Morav\u011b sou\u010d\u00e1stkami z AliExpress \ud83d\ude42 (mimo procesor, ten je z TME).<\/p>\n

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

    Z AliExpressu jsem tak\u00e9 objednal vhodnou ant\u00e9nu a konektor s kabl\u00edkem (viz. tituln\u00ed obr\u00e1zek).<\/p>\n

    O\u017eiven\u00ed procesoru („Hello World“ embedded sv\u011bta – oby\u010dejn\u00e9 blik\u00e1n\u00ed LED) jsem pak realizoval v AtmelStudiu za pomoci Atmel Start<\/a>, kter\u00fd mi umo\u017enil skute\u010dn\u011b rychl\u00e9 vygenerov\u00e1n\u00ed startovac\u00edho k\u00f3du a knihovny pro snadn\u00fd p\u0159\u00edstup k GPIO.<\/p>\n

    Pak ov\u0161em p\u0159i\u0161la ta slo\u017eit\u011bj\u0161\u00ed \u010d\u00e1st – USB rozhran\u00ed. Tady jsem si vypomohl trikem. Procesor stejn\u00e9 t\u0159\u00eddy obsahuje Arduino Zero deska, tak\u017ee jsem vyp\u00e1lil zavad\u011b\u010d, ur\u010den\u00fd pro Arduino Zero a… tad\u00e1\u00e1\u00e1 – na PC se norm\u00e1ln\u011b objevilo rozhran\u00ed, umo\u017e\u0148uj\u00edc\u00ed nahr\u00e1n\u00ed programu. Znamen\u00e1 to tedy, \u017ee firmware je mo\u017en\u00e9 vyv\u00edjet i v Arduino IDE.<\/p>\n

    Dal\u0161\u00edm krokem byla instalace do Turrisu a test, zda rozpozn\u00e1 CDC s\u00e9riov\u00fd port, emulovan\u00fd v SAMD procesoru.<\/p>\n

    Instalace prob\u011bhla bez v\u011bt\u0161\u00edch obt\u00ed\u017e\u00ed…<\/p>\n

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

    Jedin\u00e9, co bych mohl vytknout je to, \u017ee ten, kdo montoval sloupky na PCB Turris nedot\u00e1hl jednu mati\u010dku ze spodn\u00ed strany, tak\u017ee jsem musel odmontovat cel\u00fd PCB \ud83d\ude41 . Mont\u00e1\u017e ant\u00e9ny prob\u011bhla bez jak\u00fdchkoliv pot\u00ed\u017e\u00ed a, d\u00edky spr\u00e1vn\u00e9mu otvoru v zadn\u00ed st\u011bn\u011b Turrisu, nehroz\u00ed jej\u00ed prot\u00e1\u010den\u00ed, jako u ant\u00e9ny WiFi.<\/p>\n

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

    Kabl\u00edk k ant\u00e9n\u011b je mo\u017en\u00e1 a\u017e zbyte\u010dn\u011b dlouh\u00fd, ale zase tolik nep\u0159ek\u00e1\u017e\u00ed…<\/p>\n

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

    Celkov\u00fd pohled na instalaci pak vypad\u00e1 takto:<\/p>\n

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

    No a d\u00e1le p\u0159i\u0161lo na \u0159adu otestov\u00e1n\u00ed, zda Turris uvid\u00ed v seznamu USB za\u0159\u00edzen\u00ed nov\u011b p\u0159idan\u00fd HW…<\/p>\n

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

    Jak je vid\u011bt, tak vid\u00ed \ud83d\ude42 , tak\u017ee se d\u00e1l m\u016f\u017eu soust\u0159edit na firmware a hlavn\u011b bod t\u0159i p\u016fvodn\u00edho pl\u00e1nu.<\/p>\n

    V\u011bci, co se tak \u00fapln\u011b nepovedly<\/h6>\n

    Tradi\u010dn\u011b mus\u00edm uv\u00e9st i to, s \u010d\u00edm nejsem p\u0159\u00edli\u0161 spokojen\u00fd – v tomto projektu je to (zat\u00edm) na\u0161t\u011bst\u00ed jen jedna v\u011bc. Zavad\u011b\u010d Arduino Zero vy\u017eaduje pro svoji aktivaci dvoj\u00ed reset – na origin\u00e1ln\u00ed desce Arduina se to d\u011bl\u00e1 dvojit\u00fdm stiskem tla\u010d\u00edtka Reset, kter\u00e9 ov\u0161em na desce TOLoRa nen\u00ed \ud83d\ude41 . Je to chyba, ale na\u0161t\u011bst\u00ed jen drobn\u00e1 – tento postup se pou\u017e\u00edv\u00e1 jen p\u0159i lad\u011bn\u00ed\/nahr\u00e1v\u00e1n\u00ed nov\u00e9ho firmware, tak\u017ee pro fin\u00e1ln\u00ed produkt u\u017e bude zbyte\u010dn\u00fd.<\/p>\n

    A co d\u00e1l…<\/h6>\n

    V prvn\u00ed \u0159ad\u011b najdete na konci \u010dl\u00e1nku kompletn\u00ed projekt HW v Kicadu ke sta\u017een\u00ed. Proto\u017ee ale pr\u00e1v\u011b intenz\u00edvn\u011b dokon\u010duji jin\u00fd projekt a v nejbli\u017e\u0161\u00ed dob\u011b nebudu m\u00edt prostor k pr\u00e1ci na TOLoRa, rozhodl jsem se ud\u011blat tuto nab\u00eddku:<\/p>\n

    Pokud m\u00e1 n\u011bkdo V\u00c1\u017dN\u00dd z\u00e1jem o realizaci FW, p\u0159\u00edpadn\u011b i SW, a\u0165 m\u011b kontaktuje na kontaktn\u00ed mail – pokud se jednomu ze z\u00e1jemc\u016f poda\u0159\u00ed m\u011b p\u0159esv\u011bd\u010dit, \u017ee jde o re\u00e1ln\u00fd z\u00e1jem a ten \u010dlov\u011bk na to skute\u010dn\u011b m\u00e1, po\u0161lu mu zdarma osazenou desku (RFM95 budu muset objednat, tak\u017ee to chv\u00edli zabere). Moj\u00ed podm\u00ednkou je, \u017ee v\u00fdsledn\u00fd firmware bude pod Open Source licenc\u00ed a bude uve\u0159ejn\u011bn\u00fd na t\u011bchto str\u00e1nk\u00e1ch…<\/p>\n

    <\/div><\/a>\r\nTOLoRaRevA (277.3 KiB, 2013 downloads)\r\n<\/div>\n

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

    Tento projekt vznikl tro\u0161ku netradi\u010dn\u011b – za\u010d\u00e1tek tohoto roku jsem tr\u00e1vil upoutan\u00fd na l\u016f\u017eku, ale – asi to v\u011bt\u0161ina z v\u00e1s zn\u00e1 – p\u0159es to, \u017ee je t\u011blu mizern\u011b, tak mozek se zastavit ned\u00e1. Obklopen\u00fd \u010dl\u00e1nky z internetu o long range bezdr\u00e1tov\u00fdch komunikac\u00edch a neslavn\u00e9m konci projektu Turris Gadgets jsem dostal n\u00e1pad, p\u0159isp\u011bt tak\u00e9 svoj\u00ed … Pokra\u010dov\u00e1n\u00ed textu TOLoRa – LoRa komunikace pro Turris Omnia<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,21,72],"tags":[73,68,67],"class_list":["post-1216","post","type-post","status-publish","format-standard","hentry","category-elektronika","category-internet-of-things","category-turris-omnia","tag-lora","tag-omnia","tag-turris"],"_links":{"self":[{"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/posts\/1216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1216"}],"version-history":[{"count":17,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/posts\/1216\/revisions"}],"predecessor-version":[{"id":1242,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=\/wp\/v2\/posts\/1216\/revisions\/1242"}],"wp:attachment":[{"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xpablo.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}