{"id":92592,"date":"2019-05-28T16:01:44","date_gmt":"2019-05-28T14:01:44","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/wyprowadzenia-gpio-raspberry-pi-jak-to-dziala\/"},"modified":"2024-10-11T13:11:33","modified_gmt":"2024-10-11T11:11:33","slug":"vyvody-gpio-raspberry-pi-jak-to-funguje","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/vyvody-gpio-raspberry-pi-jak-to-funguje\/","title":{"rendered":"V\u00fdvody GPIO Raspberry Pi: jak to funguje?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u010cas \u010dten\u00ed:<\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"92592\" class=\"elementor elementor-92592 elementor-818\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a232f88 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a232f88\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6b0649dc\" data-id=\"6b0649dc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4aabe8a elementor-widget elementor-widget-text-editor\" data-id=\"4aabe8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Jak\u00fdkoli model <a href=\"https:\/\/botland.cz\/399-raspberry-pi\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Raspberry Pi (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\"><b>Raspberry Pi<\/b><\/a>po\u010d\u00ednaje modelem B+ m\u00e1 40 pin\u016f GPIO. V tomto \u010dl\u00e1nku se pokus\u00edme popsat, jak ka\u017ed\u00fd z nich funguje, a seskup\u00edme je do r\u016fzn\u00fdch kategori\u00ed. <\/p>\n<p style=\"text-align: center;\"><strong><a href=\"https:\/\/botland.com.pl\/blog\/raspberry-pi-3\/\" data-wpel-link=\"internal\">Viz tak\u00e9 n\u00e1\u0161 \u010dl\u00e1nek: Co je Raspberry Pi<\/a><\/strong><\/p>\n<p><\/p>\n<p><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" width=\"723\" height=\"1024\" class=\"wp-image-819\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2019\/05\/1-1-1-723x1024.jpg\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/1-1-1-723x1024.jpg 723w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/1-1-1-212x300.jpg 212w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/1-1-1-768x1087.jpg 768w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/1-1-1.jpg 777w\" sizes=\"(max-width: 723px) 100vw, 723px\" \/><\/figure>\n<p> <\/p>\nV\u00fdvody GPIO &#8211; Raspberry Pi<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ce42eb6 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"ce42eb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.cz\/399-raspberry-pi\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Raspberry Pi - Ceny<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1206ab94 elementor-widget elementor-widget-text-editor\" data-id=\"1206ab94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<p><\/p>\n<p><\/p>\n<h2>Co je <strong>GPIO Raspberry Pi <\/strong>? Co to je?<\/h2>\n<p>GPIO (General Purpose Input Output) je nejz\u00e1kladn\u011bj\u0161\u00edm aspektem minipo\u010d\u00edta\u010de Raspberry Pi. Piny GPIO jsou digit\u00e1ln\u00ed, co\u017e znamen\u00e1, \u017ee maj\u00ed dva stavy: Jsou to dva typy v\u00fdstup\u016f: ON nebo OFF (zapnuto nebo vypnuto). Mohou m\u00edt sm\u011br p\u0159\u00edjmu nebo odesl\u00e1n\u00ed (vstup\/v\u00fdstup).  <\/p>\n<p>GPIO na Raspberry Pi m\u00e1 mnoho r\u016fzn\u00fdch typ\u016f pin\u016f. Pokud chcete zjistit, kter\u00e9 piny jsou zodpov\u011bdn\u00e9 za uzemn\u011bn\u00ed, kter\u00e9 za nap\u00e1jen\u00ed a kter\u00e9 m\u016f\u017eeme pou\u017e\u00edt pro komunikaci, zad\u00e1me do p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku <strong>Raspberry &#8220;pinout&#8221;<\/strong>. <\/p>\n<h3><strong>Raspberry Pi GPIO &#8211; programov\u00e1n\u00ed<\/strong><\/h3>\n<p>Jejich stav a sm\u011br m\u016f\u017eeme ovl\u00e1dat pomoc\u00ed vhodn\u00fdch programovac\u00edch jazyk\u016f, jako je Python, JavaScript, node-RED atd.<\/p>\n<p>Piny GPIO pracuj\u00ed s nap\u011bt\u00edm 3,3 V a maxim\u00e1ln\u00ed proudovou z\u00e1t\u011b\u017e\u00ed 16 mA. To znamen\u00e1, \u017ee m\u016f\u017eeme bezpe\u010dn\u011b nap\u00e1jet jednu nebo dv\u011b LED diody z jednoho pinu GPIO p\u0159es rezistor. Nicm\u00e9n\u011b pro cokoli, co spot\u0159ebov\u00e1v\u00e1 v\u00edce proudu, jako nap\u0159. <a href=\"https:\/\/botland.cz\/724-dc-motory-stejnosmerny-proud\" data-wpel-link=\"internal\"><strong>stejnosm\u011brn\u00fd motor<\/strong><\/a>, budeme pot\u0159ebovat extern\u00ed sou\u010d\u00e1stky. Jinak bychom mohli po\u0161kodit n\u00e1\u0161 po\u010d\u00edta\u010d Raspberry Pi.   <\/p>\n<p>Ovl\u00e1d\u00e1n\u00ed pin\u016f GPIO programov\u00e1n\u00edm v jazyce Python vy\u017eaduje import p\u0159\u00edslu\u0161n\u00fdch knihoven s p\u0159edem p\u0159ipraven\u00fdm k\u00f3dem. Nejobl\u00edben\u011bj\u0161\u00ed knihovnou je <strong><a href=\"https:\/\/pypi.org\/project\/RPi.GPIO\/\" data-wpel-link=\"external\" target=\"_blank\" rel=\"nofollow external noopener noreferrer\">RPi.GPIO<\/a><\/strong>, kter\u00e1 se pou\u017e\u00edv\u00e1 p\u0159i vytv\u00e1\u0159en\u00ed tis\u00edc\u016f projekt\u016f. Po n\u00ed n\u00e1sledovala knihovna s n\u00e1zvem <strong><a href=\"https:\/\/pypi.org\/project\/gpiozero\/\" data-wpel-link=\"external\" target=\"_blank\" rel=\"nofollow external noopener noreferrer\">GPIO Zero<\/a><\/strong>, vytvo\u0159en\u00e1 pro za\u010d\u00ednaj\u00edc\u00ed u\u017eivatele jazyka Python a elektroniky. Ob\u011b knihovny byly zabudov\u00e1ny do syst\u00e9mu Raspbian.   <\/p>\n<h3>N\u00e1zvy jednotliv\u00fdch pin\u016f <strong> GPIO Raspberry Pi<\/strong><\/h3>\n<p>Jednotliv\u00e9 piny GPIO maj\u00ed mnoho n\u00e1zv\u016f. Prvn\u00ed nejz\u0159eteln\u011bj\u0161\u00ed n\u00e1zev je fyzick\u00e9 um\u00edst\u011bn\u00ed GPIO. Po\u010d\u00ednaje lev\u00fdm horn\u00edm rohem GPIO je pin nejbl\u00ed\u017ee slotu GPIO. <a href=\"https:\/\/botland.cz\/335-pametove-karty-microsd-sd\" data-wpel-link=\"internal\"><strong>karty microSD<\/strong><\/a>, m\u00e1me pin 1, kter\u00fd zaji\u0161\u0165uje nap\u00e1jen\u00ed 3,3 V. Napravo od tohoto pinu je fyzick\u00fd pin 2, kter\u00fd poskytuje 5 V. \u010c\u00edsla pin\u016f se zvy\u0161uj\u00ed, jak postupujeme dol\u016f po jednotliv\u00fdch sloupc\u00edch, p\u0159i\u010dem\u017e pin 1 p\u0159ech\u00e1z\u00ed na piny 3, 5, 6 a tak d\u00e1le, a\u017e se dostaneme na pin 39. Ka\u017ed\u00fd pin v tomto sloupci m\u00e1 lich\u00e9 \u010d\u00edslo. Ve sloupci za\u010d\u00ednaj\u00edc\u00edm na pinu 2 to bude 4, 6, 8 atd. a\u017e do pinu 40. Fyzick\u00e9 \u010d\u00edslov\u00e1n\u00ed pin\u016f je nejz\u00e1kladn\u011bj\u0161\u00edm zp\u016fsobem lokalizace pin\u016f, ale mnoho v\u00fdukov\u00fdch program\u016f uv\u00e1d\u00ed jin\u00e9 po\u0159ad\u00ed \u010d\u00edslov\u00e1n\u00ed.     <\/p>\n<p>\u010c\u00edslov\u00e1n\u00ed Broadcom (BCM) jako \u010d\u00edslov\u00e1n\u00ed GPIO Raspberry Pi, vypad\u00e1 pro za\u010d\u00ednaj\u00edc\u00ed u\u017eivatele chaoticky. GPIO17, 22 a 27 n\u00e1sleduj\u00ed jeden za druh\u00fdm, ani\u017e by se myslelo na logick\u00e9 \u010d\u00edslov\u00e1n\u00ed. Mapov\u00e1n\u00ed pin\u016f BCM se t\u00fdk\u00e1 pin\u016f GPIO, kter\u00e9 jsou p\u0159\u00edmo p\u0159ipojeny k SoC na Raspberry Pi. D\u00edky tomu m\u00e1me k dispozici p\u0159\u00edm\u00e9 propojen\u00ed s mozkem Raspberry Pi pro p\u0159ipojen\u00ed senzor\u016f a komponent pot\u0159ebn\u00fdch pro n\u00e1\u0161 projekt.   <\/p>\n<p>V\u011bt\u0161ina n\u00e1vod\u016f pro Raspberry Pi pou\u017e\u00edv\u00e1 toto sch\u00e9ma \u010d\u00edslov\u00e1n\u00ed, proto\u017ee toto sch\u00e9ma je ofici\u00e1ln\u011b podporov\u00e1no nadac\u00ed Raspberry Pi Foundation. Nejlep\u0161\u00edm postupem je pou\u017e\u00edvat a nau\u010dit se \u010d\u00edslovac\u00ed sch\u00e9ma BCM. \u010c\u00edslov\u00e1n\u00ed BCM a GPIO se vztahuje ke stejn\u00e9mu sch\u00e9matu. Nap\u0159\u00edklad GPIO17 je stejn\u00e9 jako BCM17.   <\/p>\n<p>N\u011bkter\u00e9 piny RPI GPIO maj\u00ed tak\u00e9 alternativn\u00ed funkce. Umo\u017e\u0148uj\u00ed p\u0159ipojen\u00ed k r\u016fzn\u00fdm typ\u016fm za\u0159\u00edzen\u00ed pomoc\u00ed protokol\u016f I2C, SPI nebo UART. Nap\u0159\u00edklad GPIO13 a GPIO4 jsou z\u00e1rove\u0148 piny SDA a SCL sb\u011brnice I2C. Pou\u017e\u00edvaj\u00ed se k p\u0159ipojen\u00ed k za\u0159\u00edzen\u00edm pou\u017e\u00edvaj\u00edc\u00edm tyto protokoly. Tato rozhran\u00ed mus\u00ed b\u00fdt aktivov\u00e1na v konfiguraci opera\u010dn\u00edho syst\u00e9mu Raspbian.    <\/p>\n<p>N\u00e1\u0161 obchod nab\u00edz\u00ed <strong><a href=\"https:\/\/botland.cz\/raspberry-pi-hat-pin-expandery\/2607-modul-protopi-plus-rozsireni-raspberry-pi-4-3-2-b-na-prkenko-paska-5904422331023.html\" data-wpel-link=\"internal\">roz\u0161\u00ed\u0159en\u00ed GPIO<\/a> pro Raspberry Pi,<\/strong> kter\u00e9 umo\u017e\u0148uje p\u0159en\u00e9st piny GPIO z Raspberry Pi na prototypovou desku.<\/p>\n<p><\/p>\n<p><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><a href=\"https:\/\/botland.com.pl\/raspberry-pi-hat-ekspandery-wyprowadzen\/2607-modul-protopi-plus-rozszerzenie-raspberry-pi-32b-do-plytki-stykowej-tasma.html\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\"><img decoding=\"async\" width=\"1000\" height=\"564\" class=\"wp-image-820\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2019\/05\/2-1-1.jpg\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/2-1-1.jpg 1000w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/2-1-1-300x169.jpg 300w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2019\/05\/2-1-1-768x433.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a>\n<p> <\/p>\n<figcaption>Modul ProtoPi Plus<\/figcaption>\n<\/figure>\n<\/div>\n<p><\/p>\n<p><\/p>\n<h2>I2C, SPI, UART: kter\u00fd pou\u017e\u00edt?<\/h2>\n<p><\/p>\n<p><\/p>\n<p>Rozd\u00edly mezi I2C, SPI a UART jsou pops\u00e1ny n\u00ed\u017ee, ale pokud se pt\u00e1te, kter\u00fd z nich pou\u017e\u00edt pro p\u0159ipojen\u00ed va\u0161eho za\u0159\u00edzen\u00ed, kr\u00e1tk\u00e1 odpov\u011b\u010f zn\u00ed: pod\u00edvejte se na specifikaci produktu. Nap\u0159\u00edklad mal\u00fd <a href=\"https:\/\/botland.cz\/69-displeje-a-obrazovky\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wy\u015bwietlacz LED (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\"><b>LED displej<\/b><\/a> vy\u017eaduje pou\u017eit\u00ed komunikace SPI, zat\u00edmco jin\u00fd m\u016f\u017ee vy\u017eadovat pou\u017eit\u00ed I2C. V dokumentaci k v\u00fdrobku se obvykle dozv\u00edte, jak\u00e9 piny jsou pro p\u0159ipojen\u00ed vy\u017eadov\u00e1ny.  <\/p>\n<p><\/p>\n<p><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/botland.com.pl\/img\/art\/inne\/04479_4.jpg\" alt=\"LCD displej\"><\/figure>\n<\/div>\n<p><\/p>\n<p><\/p>\n<h3>I2C<\/h3>\n<p><\/p>\n<p><\/p>\n<p>I2C je bezplatn\u00fd dvouvodi\u010dov\u00fd protokol pro p\u0159ipojen\u00ed za\u0159\u00edzen\u00ed vyu\u017e\u00edvaj\u00edc\u00edch standard I2C. Za\u0159\u00edzen\u00ed pou\u017e\u00edvaj\u00edc\u00ed tento standard maj\u00ed vztah master a slave. M\u016f\u017ee existovat v\u00edce ne\u017e jeden master, ale ka\u017ed\u00e9 za\u0159\u00edzen\u00ed slave vy\u017eaduje jedine\u010dnou adresu z\u00edskanou v\u00fdrobcem. To znamen\u00e1, \u017ee m\u016f\u017eeme pou\u017e\u00edvat v\u00edce za\u0159\u00edzen\u00ed na jednom p\u0159ipojen\u00ed I2C, proto\u017ee ka\u017ed\u00e9 za\u0159\u00edzen\u00ed je jedine\u010dn\u00e9 a je zjistiteln\u00e9 u\u017eivatelem a po\u010d\u00edta\u010dem pomoc\u00ed p\u0159\u00edkaz\u016f, jako je i2cdetect.   <\/p>\n<p><\/p>\n<p><\/p>\n<p>Jak ji\u017e bylo zm\u00edn\u011bno, I2C m\u00e1 dv\u011b p\u0159ipojen\u00ed SDA a SCL. Funguj\u00ed tak, \u017ee pos\u00edlaj\u00ed data na SDA a z n\u011bj rychlost\u00ed \u0159\u00edzenou pinem SCL. I2C je jednoduch\u00fd zp\u016fsob p\u0159ipojen\u00ed mnoha za\u0159\u00edzen\u00ed, jako jsou <b><a href=\"https:\/\/botland.cz\/69-displeje-a-obrazovky\" data-wpel-link=\"internal\">displeje LCD\/OLED<\/a>, <a href=\"https:\/\/botland.cz\/116-teplotni-senzory\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"czujniki temperatury (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\">teplotn\u00ed \u010didla<\/a><\/b> a p\u0159evodn\u00edky D\/A, kter\u00e9 pou\u017e\u00edvaj\u00ed fotorezistory.  <\/p>\n<p><\/p>\n<p><\/p>\n<p>Raspberry Pi m\u00e1 dv\u011b p\u0159ipojen\u00ed I2C v GPIO 2 a 3 (SDA a SCL) pro i2C0 (master) a fyzick\u00e9 piny 27 a 28 jsou piny I2C, kter\u00e9 umo\u017e\u0148uj\u00ed komunikaci s kompatibiln\u00edmi p\u0159ekryvn\u00fdmi kartami HAT.<\/p>\n<p><\/p>\n<p><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/botland.com.pl\/46733-thickbox\/sense-hat-do-raspberry-pi.jpg\" alt=\"Sense Hat pro Raspberry Pi\">\n<p> <\/p>\n<figcaption><a href=\"https:\/\/botland.cz\/raspberry-pi-hat-senzory\/4585-sense-hat-pro-raspberry-pi-5056561800080.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Sense Hat (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\"><b>Sense Hat<\/b><\/a><\/figcaption>\n<\/figure>\n<\/div>\n<p><\/p>\n<p><\/p>\n<h3>SPI<\/h3>\n<p><\/p>\n<p><\/p>\n<p>Jedn\u00e1 se o dal\u0161\u00ed protokol pro p\u0159ipojen\u00ed kompatibiln\u00edch za\u0159\u00edzen\u00ed k po\u010d\u00edta\u010di Raspberry Pi. Je podobn\u00fd protokolu I2C, proto\u017ee mezi Raspberry Pi a p\u0159ipojen\u00fdm za\u0159\u00edzen\u00edm existuje vztah master a slave. <\/p>\n<p><\/p>\n<p><\/p>\n<p>SPI se obvykle pou\u017e\u00edv\u00e1 k p\u0159enosu dat na kr\u00e1tk\u00e9 vzd\u00e1lenosti mezi mikrokontrol\u00e9ry a komponentami, jako jsou posuvn\u00e9 registry, senzory nebo karty SD. Data jsou synchronizov\u00e1na pomoc\u00ed hodin (SCLK na GPIO11) z nad\u0159azen\u00e9ho po\u010d\u00edta\u010de. Data jsou zase p\u0159en\u00e1\u0161ena z po\u010d\u00edta\u010de Pi do na\u0161eho za\u0159\u00edzen\u00ed SPI prost\u0159ednictv\u00edm pinu MOSI (GPIO10). MOSI znamen\u00e1 Master Out Slave In. Pokud sou\u010d\u00e1stka pot\u0159ebuje odpov\u011bd\u011bt na\u0161emu po\u010d\u00edta\u010di Pi, po\u0161le data zp\u011bt pomoc\u00ed pinu MISO (GPIO9), co\u017e znamen\u00e1 Master In Slave Out.    <\/p>\n<p><\/p>\n<p><\/p>\n<h3>UART<\/h3>\n<p><\/p>\n<p><\/p>\n<p>B\u011b\u017en\u011b zn\u00e1m\u00fd jako &#8220;s\u00e9riov\u00fd&#8221; pin UART (&#8220;Transmit&#8221; GPIO14, &#8220;Receive&#8221; GPIO15) umo\u017e\u0148uje p\u0159ihla\u0161ov\u00e1n\u00ed ke konzoli\/termin\u00e1lu bez nutnosti pou\u017eit\u00ed kl\u00e1vesnice nebo jin\u00e9ho ukazovac\u00edho za\u0159\u00edzen\u00ed. Nejjednodu\u0161\u0161\u00ed zp\u016fsob bezdr\u00e1tov\u00e9ho ovl\u00e1d\u00e1n\u00ed po\u010d\u00edta\u010de Raspberry Pi je p\u0159es s\u00ed\u0165 nebo USB. <\/p>\n<p><\/p>\n<p><\/p>\n<p>Pokud v\u0161ak nem\u00e1te p\u0159ipojen\u00ed k internetu, m\u016f\u017eete ovl\u00e1dat <a href=\"https:\/\/botland.cz\/399-raspberry-pi\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Raspberry Pi (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\"><b>Raspberry Pi<\/b><\/a> pomoc\u00ed s\u00e9riov\u00e9ho kabelu nebo modulu p\u0159evodn\u00edku USB na s\u00e9riov\u00e9 rozhran\u00ed ve spojen\u00ed s po\u010d\u00edta\u010dem pomoc\u00ed termin\u00e1lov\u00e9 konzoly. UART je mimo\u0159\u00e1dn\u011b spolehliv\u00fd a poskytuje p\u0159\u00edstup k Raspberry Pi bez nutnosti dal\u0161\u00edho vybaven\u00ed. Jen nezapome\u0148te povolit s\u00e9riovou konzoli v aplikaci pro ovl\u00e1d\u00e1n\u00ed Raspberry.  <\/p>\n<p><\/p>\n<p><\/p>\n<h3>Zem (GND)<\/h3>\n<p><\/p>\n<p><\/p>\n<p>Zem se b\u011b\u017en\u011b ozna\u010duje jako GND, gnd nebo -. GND je m\u00edsto, kde lze m\u011b\u0159it v\u0161echna nap\u011bt\u00ed a kde lze dokon\u010dit elektrick\u00fd obvod. Je to n\u00e1\u0161 nulov\u00fd bod a p\u0159ipojen\u00edm sou\u010d\u00e1stky, nap\u0159\u00edklad LED diody, ke zdroji nap\u00e1jen\u00ed a GND se sou\u010d\u00e1stka stane sou\u010d\u00e1st\u00ed obvodu a LED diodou za\u010dne prot\u00e9kat proud a vytv\u00e1\u0159et sv\u011btlo.  <\/p>\n<p><\/p>\n<p><\/p>\n<p>P\u0159i sestavov\u00e1n\u00ed obvod\u016f je v\u017edy vhodn\u00e9 prov\u00e9st uzemn\u011bn\u00ed p\u0159ed p\u0159ipojen\u00edm jak\u00e9hokoli nap\u011bt\u00ed, zabr\u00e1n\u00edte tak mo\u017en\u00e9mu po\u0161kozen\u00ed citliv\u011bj\u0161\u00edch sou\u010d\u00e1stek. Raspberry Pi m\u00e1 osm vodi\u010d\u016f GND na GPIO. Volba zemnic\u00edho kol\u00edku tedy z\u00e1vis\u00ed na osobn\u00edch preferenc\u00edch nebo pohodl\u00ed p\u0159i p\u0159ipojov\u00e1n\u00ed sou\u010d\u00e1stek.  <\/p>\n<p><\/p>\n<p><\/p>\n<h3>5V<\/h3>\n<p><\/p>\n<p><\/p>\n<p>Piny 5 V poskytuj\u00ed p\u0159\u00edm\u00fd p\u0159\u00edstup k nap\u00e1jen\u00ed 5 V ze s\u00ed\u0165ov\u00e9ho adapt\u00e9ru. Raspberry m\u016f\u017ee b\u00fdt nap\u00e1jeno p\u0159\u00edmo z t\u011bchto pin\u016f a m\u016f\u017ee tak\u00e9 nap\u00e1jet jin\u00e1 5V za\u0159\u00edzen\u00ed. P\u0159i p\u0159\u00edm\u00e9m pou\u017eit\u00ed t\u011bchto pin\u016f bu\u010fte opatrn\u00ed a p\u0159ed p\u0159ipojen\u00edm zkontrolujte nap\u011bt\u00ed, proto\u017ee obch\u00e1zej\u00ed v\u0161echny bezpe\u010dnostn\u00ed prvky, jako je regul\u00e1tor nap\u011bt\u00ed a pojistka, kter\u00e9 chr\u00e1n\u00ed minipo\u010d\u00edta\u010d. <\/p>\n<p><\/p>\n<p><\/p>\n<h3>3V3<\/h3>\n<p><\/p>\n<p><\/p>\n<p>V\u00fdvod 3 V poskytuje stabiln\u00ed nap\u00e1jen\u00ed 3,3 V. Ve skute\u010dnosti je tento pin do sestavy za\u0159azen jen z\u0159\u00eddka, ale m\u00e1 speci\u00e1ln\u00ed vyu\u017eit\u00ed. Po p\u0159ipojen\u00ed <a href=\"https:\/\/botland.cz\/870-led-diody\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diody LED (otwiera si\u0119 na nowej zak\u0142adce)\" data-wpel-link=\"internal\"><b>LED diody<\/b><\/a> ke GPIO se ujist\u00edme, \u017ee je LED dioda spr\u00e1vn\u011b p\u0159ipojena a sv\u00edt\u00ed. P\u0159ipojen\u00edm nohy LED, anody, k pinu 3,3 V p\u0159es rezistor a krat\u0161\u00ed nohy, katody, k GND m\u016f\u017eeme zkontrolovat, \u017ee na\u0161e LED sv\u00edt\u00ed. T\u00edm jsme odstranili hardwarovou chybu v n\u00e1vrhu a m\u016f\u017eeme bez obav za\u010d\u00edt stav\u011bt n\u00e1\u0161 projekt.   <\/p>\n<p><\/p>\n<p><\/p>\n<p><em>Zdroj: <\/em><a href=\"https:\/\/www.tomshardware.com\/reviews\/raspberry-pi-gpio-pinout,6122.html\" data-wpel-link=\"external\" target=\"_blank\" rel=\"nofollow external noopener noreferrer\"><em><b>https:\/\/www.tomshardware.com\/reviews\/raspberry-pi-gpio-pinout,6122.html<\/b><\/em><\/a><\/p>\n<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7da193e elementor-grid-1 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-posts--show-avatar elementor-card-shadow-yes elementor-posts__hover-gradient elementor-widget elementor-widget-posts\" data-id=\"7da193e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cards_columns&quot;:&quot;1&quot;,&quot;cards_columns_tablet&quot;:&quot;2&quot;,&quot;cards_columns_mobile&quot;:&quot;1&quot;,&quot;cards_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;cards_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;cards_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.cards\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-cards elementor-grid\" role=\"list\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-71210 post type-post status-publish format-standard has-post-thumbnail hentry category-raspberry-pi-cs tag-raspberry-cs tag-raspberry-pi-cs-tag\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/botland.cz\/blog\/na-co-se-tesime-u-raspberry-pi-5\/\" tabindex=\"-1\" data-wpel-link=\"internal\"><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"800\" height=\"400\" src=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/05\/new2023-RPi5okladka-1024x512.jpg\" class=\"attachment-large size-large wp-image-61157\" alt=\"\" srcset=\"https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/05\/new2023-RPi5okladka-1024x512.jpg 1024w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/05\/new2023-RPi5okladka-300x150.jpg 300w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/05\/new2023-RPi5okladka-768x384.jpg 768w, https:\/\/botland.cz\/blog\/wp-content\/uploads\/2023\/05\/new2023-RPi5okladka.jpg 1510w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/div><\/a>\n\t\t<div class=\"termsbagdes\">\t\t\t\t\t<a class=\"post-bage-link\" href=\"\/blog\/category\/raspberry-pi\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<div class=\"elementor-post__badge\" style=\"background-color: #c01e4c\">Raspberry Pi<\/div>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\t\t<div class=\"elementor-post__avatar\">\n\t\t\t<img data-del=\"avatar\" alt=\"Oskar Pacelt\" src='https:\/\/botland.cz\/blog\/wp-content\/uploads\/2020\/09\/Oskar-Pacelt-150x150.png' class='avatar pp-user-avatar avatar-128 photo ' height='128' width='128'\/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/botland.cz\/blog\/na-co-se-tesime-u-raspberry-pi-5\/\" data-wpel-link=\"internal\">\n\t\t\t\tNa co se t\u011b\u0161\u00edme u Raspberry Pi 5\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>Co je nov\u00e9ho v Raspberry Pi 5? Co m\u016f\u017eeme o\u010dek\u00e1vat? Zde jsou nej\u010dast\u011bji uv\u00e1d\u011bn\u00e1 o\u010dek\u00e1v\u00e1n\u00ed od nov\u00e9 verze minipo\u010d\u00edta\u010de Raspberry Pi.<\/p>\n\t\t<\/div>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/botland.cz\/blog\/na-co-se-tesime-u-raspberry-pi-5\/\" aria-label=\"Read more about Na co se t\u011b\u0161\u00edme u Raspberry Pi 5\" tabindex=\"-1\" data-wpel-link=\"internal\">\n\t\t\t\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-72d9e50 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"72d9e50\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5eecf98\" data-id=\"5eecf98\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a5ecf97 elementor-widget elementor-widget-text-editor\" data-id=\"a5ecf97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div id=\"k-faq-accord\">\n<h2>GPIO &#8211; \u010cASTO KLADEN\u00c9 OT\u00c1ZKY<\/h2>\n\n<div class=\"tabs\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\">\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck1\" type=\"checkbox\">\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck1\">Co je GPIO?<label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">GPIO (general purpose input output) jsou digit\u00e1ln\u00ed piny, kter\u00e9 se vyzna\u010duj\u00ed pouze dv\u011bma stavy, a to ON nebo OFF. Jednotliv\u00e9 piny se od sebe li\u0161\u00ed mimo jin\u00e9 t\u011bmito vlastnostmi sm\u011brem veden\u00ed proudu (p\u0159\u00edjem, tj. vstup, a vys\u00edl\u00e1n\u00ed, tj. v\u00fdstup). Popis v\u0161ech 40 pin\u016f GPIO minipo\u010d\u00edta\u010de <a href=\"\" data-wpel-link=\"internal\">Raspberry Pi<\/a> najdete v tomto <a href=\"\" data-wpel-link=\"internal\">\u010dl\u00e1nku<\/a>.   \n<\/div>\n\n<\/div>\n<\/div>\n\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck2\" type=\"checkbox\">\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck2\">Jak p\u0159ipojit diodu k Raspberry Pi?<\/label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">Pro p\u0159ipojen\u00ed diody k minipo\u010d\u00edta\u010di Raspberry Pi mus\u00ed b\u00fdt del\u0161\u00ed rameno diody (tj. anoda) p\u0159ipojeno p\u0159es <a href=\"https:\/\/botland.cz\/50-rezistory-odporniky\" data-wpel-link=\"internal\">rezistor<\/a> 1,2 k\u03a9 na pin \u010d\u00edslo 40. Katoda, tj. krat\u0161\u00ed rameno diody, mus\u00ed b\u00fdt p\u0159ipojena k GND, tak\u017ee mus\u00ed b\u00fdt p\u0159ipojena na pin \u010d\u00edslo 39. V p\u0159\u00edpad\u011b, \u017ee je dioda p\u0159ipojena k minipo\u010d\u00edta\u010di Raspberry Pi, mus\u00ed b\u00fdt p\u0159ipojena na pin \u010d\u00edslo 39. \n<\/div>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>V\u0161e o GPIO s rozpisem p\u0159\u00edslu\u0161n\u00fdch pin\u016f. <\/p>\n","protected":false},"author":5,"featured_media":59942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[560,562],"tags":[662,663],"class_list":["post-92592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poradenstvi","category-raspberry-pi-cs","tag-gpio-cs","tag-top-cs"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>V\u00fdvody GPIO Raspberry Pi: jak to funguje? - Botland blog<\/title>\n<meta name=\"description\" content=\"Ka\u017ed\u00fd model Raspberry Pi, po\u010d\u00ednaje B+, m\u00e1 40 pin\u016f GPIO. 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