{"id":234269,"date":"2024-09-29T20:26:35","date_gmt":"2024-09-29T20:26:35","guid":{"rendered":"https:\/\/www.emtrion.de\/gpios-on-emcon-rz-g1x-under-linux-2\/"},"modified":"2024-10-24T07:35:40","modified_gmt":"2024-10-24T07:35:40","slug":"gpios-on-emcon-rz-g1x-under-linux-2","status":"publish","type":"page","link":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/","title":{"rendered":"GPIOs on emCON-RZ\/G1x under Linux"},"content":{"rendered":"

Please see the following table for the translation from baseboard pin to CPU pin:<\/p>\n

 <\/p>\n

Under Linux you can use sysfs to access gpios.<\/p>\n

To get access to an GPIO pin, first, write the GPIO number to \/sys\/class\/gpio\/export<\/p>\n

echo 34 [gt] \/sys\/class\/gpio\/export<\/pre>\n
Now you should find a directory in \/sys\/class\/gpio to access your GPIO pin. Write in or out to direction to change the direction of the pin:<\/p>\n
echo out [gt] \/sys\/class\/gpio\/gpio34\/direction<\/pre>\n
The value (0 for off, 1 for on) of the pin is in the value file. To read or change it, read the file or write to it.<\/p>\n
echo 1 [gt] \/sys\/class\/gpio\/gpio34\/value<\/pre>\n
cat \/sys\/class\/gpio\/gpio34\/value<\/pre>\n
The list of GPIO numbers can be found below.<\/p>\n
 <\/p>\n
If the used kernel is compiled with CONFIG_DEBUG_FS you can get a list of the GPIOs with the command:<\/p>\n
cat \/sys\/kernel\/debug\/gpio<\/pre>\n
Remark: emtrion compiles the Linux Kernel 4.x for emCON-RZ\/G1x boards with CONFIG_DEBUG_FS.<\/p>\n
 <\/p>\n
 <\/p>\n
<\/a>emCON-RZ\/G1E on Avari<\/h2>\n
\n
There are 8 GPIOs on J27 with a signal level of 3.3V.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Connector<\/th>\nPin<\/th>\nSignal<\/th>\nSignal on RZ\/G1E<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\n<\/tr>\n
J27<\/td>\n8<\/td>\nGPIO_1<\/td>\nGPIO_1<\/td>\n0-1<\/td>\n993<\/td>\n<\/tr>\n
J27<\/td>\n10<\/td>\nGPIO_2<\/td>\nGPIO_2<\/td>\n0-2<\/td>\n994<\/td>\n<\/tr>\n
J27<\/td>\n12<\/td>\nGPIO_3<\/td>\nGPIO_3<\/td>\n5-4<\/td>\n846<\/td>\n<\/tr>\n
J27<\/td>\n14<\/td>\nGPIO_4<\/td>\nGPIO_4<\/td>\n4-31<\/td>\n901<\/td>\n<\/tr>\n
J27<\/td>\n16<\/td>\nGPIO_5<\/td>\nGPIO_5<\/td>\n4-26<\/td>\n896<\/td>\n<\/tr>\n
J27<\/td>\n18<\/td>\nGPIO_6<\/td>\nGPIO_6<\/td>\n4-29<\/td>\n899<\/td>\n<\/tr>\n
J27<\/td>\n20<\/td>\nGPIO_7<\/td>\nnot connected<\/td>\n <\/td>\n <\/td>\n<\/tr>\n
J27<\/td>\n22<\/td>\nGPIO_8<\/td>\nnot connected<\/td>\n <\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
 <\/p>\n
<\/a>emCON-RZ\/G1M on Avari<\/h2>\n
\n
There are 8 GPIOs on J27 with a signal level of 3.3V.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Connector<\/th>\nPin<\/th>\nSignal<\/th>\nSignal on RZ\/G1M<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\n<\/tr>\n
J27<\/td>\n8<\/td>\nGPIO_1<\/td>\nGP4_13<\/td>\n4-13<\/td>\n883<\/td>\n<\/tr>\n
J27<\/td>\n10<\/td>\nGPIO_2<\/td>\nGP4_14<\/td>\n4-14<\/td>\n884<\/td>\n<\/tr>\n
J27<\/td>\n12<\/td>\nGPIO_3<\/td>\nGP4_15<\/td>\n4-15<\/td>\n885<\/td>\n<\/tr>\n
J27<\/td>\n14<\/td>\nGPIO_4<\/td>\nGP4_16<\/td>\n4-16<\/td>\n886<\/td>\n<\/tr>\n
J27<\/td>\n16<\/td>\nGPIO_5<\/td>\nGP4_17<\/td>\n4-17<\/td>\n887<\/td>\n<\/tr>\n
J27<\/td>\n18<\/td>\nGPIO_6<\/td>\nGP4_18<\/td>\n4-18<\/td>\n888<\/td>\n<\/tr>\n
J27<\/td>\n20<\/td>\nGPIO_7<\/td>\nGP4_19<\/td>\n4-19<\/td>\n889<\/td>\n<\/tr>\n
J27<\/td>\n22<\/td>\nGPIO_8<\/td>\nGP4_20<\/td>\n4-20<\/td>\n890<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
 <\/p>\n
<\/a>emCON-RZ\/G1H on Avari<\/h2>\n
\n
There are 8 GPIOs on J27 with a signal level of 3.3V.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Connector<\/th>\nPin<\/th>\nSignal<\/th>\nSignal on RZ\/G1H<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\n<\/tr>\n
J27<\/td>\n8<\/td>\nGPIO_1<\/td>\nGP1_0<\/td>\n1-0<\/td>\n960<\/td>\n<\/tr>\n
J27<\/td>\n10<\/td>\nGPIO_2<\/td>\nGP1_1<\/td>\n1-1<\/td>\n961<\/td>\n<\/tr>\n
J27<\/td>\n12<\/td>\nGPIO_3<\/td>\nGP1_2<\/td>\n1-2<\/td>\n962<\/td>\n<\/tr>\n
J27<\/td>\n14<\/td>\nGPIO_4<\/td>\nGP1_3<\/td>\n1-3<\/td>\n963<\/td>\n<\/tr>\n
J27<\/td>\n16<\/td>\nGPIO_5<\/td>\nGP1_10<\/td>\n1-10<\/td>\n970<\/td>\n<\/tr>\n
J27<\/td>\n18<\/td>\nGPIO_6<\/td>\nGP1_11<\/td>\n1-11<\/td>\n971<\/td>\n<\/tr>\n
J27<\/td>\n20<\/td>\nGPIO_7<\/td>\nGP1_13<\/td>\n1-13<\/td>\n973<\/td>\n<\/tr>\n
J27<\/td>\n22<\/td>\nGPIO_8<\/td>\nGP1_14<\/td>\n1-14<\/td>\n974<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Please see the following table for the translation from baseboard pin to CPU pin:   Under Linux you can use sysfs to access gpios. To get access to an GPIO pin, first, write the GPIO number to \/sys\/class\/gpio\/export echo 34 [gt] \/sys\/class\/gpio\/export Now you should find a directory in \/sys\/class\/gpio to access your GPIO pin. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-234269","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nGPIOs on emCON-RZ\/G1x under Linux - emtrion<\/title>\n<meta name=\"description\" content=\"Learn how to access GPIOs on the emCON-RZ\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GPIOs on emCON-RZ\/G1x under Linux - emtrion\" \/>\n<meta property=\"og:description\" content=\"Learn how to access GPIOs on the emCON-RZ\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.\" \/>\n<meta property=\"og:site_name\" content=\"emtrion\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-24T07:35:40+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/gpios-on-emcon-rz-g1x-under-linux-2\\\/\",\"url\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/gpios-on-emcon-rz-g1x-under-linux-2\\\/\",\"name\":\"GPIOs on emCON-RZ\\\/G1x under Linux - emtrion\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/#website\"},\"datePublished\":\"2024-09-29T20:26:35+00:00\",\"dateModified\":\"2024-10-24T07:35:40+00:00\",\"description\":\"Learn how to access GPIOs on the emCON-RZ\\\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/gpios-on-emcon-rz-g1x-under-linux-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.emtrion.de\\\/en\\\/gpios-on-emcon-rz-g1x-under-linux-2\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/gpios-on-emcon-rz-g1x-under-linux-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"GPIOs on emCON-RZ\\\/G1x under Linux\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/\",\"name\":\"emtrion\",\"description\":\"Embedded Software and Hardware Development\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.emtrion.de\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"GPIOs on emCON-RZ\/G1x under Linux - emtrion","description":"Learn how to access GPIOs on the emCON-RZ\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/","og_locale":"en_US","og_type":"article","og_title":"GPIOs on emCON-RZ\/G1x under Linux - emtrion","og_description":"Learn how to access GPIOs on the emCON-RZ\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.","og_site_name":"emtrion","article_modified_time":"2024-10-24T07:35:40+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/","url":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/","name":"GPIOs on emCON-RZ\/G1x under Linux - emtrion","isPartOf":{"@id":"https:\/\/www.emtrion.de\/en\/#website"},"datePublished":"2024-09-29T20:26:35+00:00","dateModified":"2024-10-24T07:35:40+00:00","description":"Learn how to access GPIOs on the emCON-RZ\/G1x under Linux with sysfs, including GPIO mapping for Avari, Bvari, and Lothron boards.","breadcrumb":{"@id":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.emtrion.de\/en\/gpios-on-emcon-rz-g1x-under-linux-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.emtrion.de\/en\/"},{"@type":"ListItem","position":2,"name":"GPIOs on emCON-RZ\/G1x under Linux"}]},{"@type":"WebSite","@id":"https:\/\/www.emtrion.de\/en\/#website","url":"https:\/\/www.emtrion.de\/en\/","name":"emtrion","description":"Embedded Software and Hardware Development","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.emtrion.de\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/pages\/234269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/comments?post=234269"}],"version-history":[{"count":1,"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/pages\/234269\/revisions"}],"predecessor-version":[{"id":234270,"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/pages\/234269\/revisions\/234270"}],"wp:attachment":[{"href":"https:\/\/www.emtrion.de\/en\/wp-json\/wp\/v2\/media?parent=234269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}