{"id":234221,"date":"2024-09-29T20:26:35","date_gmt":"2024-09-29T20:26:35","guid":{"rendered":"https:\/\/www.emtrion.de\/gpios-on-dimm-am335-under-linux-2\/"},"modified":"2024-10-24T07:35:38","modified_gmt":"2024-10-24T07:35:38","slug":"gpios-on-dimm-am335-under-linux-2","status":"publish","type":"page","link":"https:\/\/www.emtrion.de\/en\/gpios-on-dimm-am335-under-linux-2\/","title":{"rendered":"GPIOs on DIMM-AM335 under Linux"},"content":{"rendered":"

<\/a>Enabling GPIO control<\/h2>\n
\n

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

echo 7 [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\/gpio7\/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\/gpio7\/value<\/pre>\n
cat \/sys\/class\/gpio\/gpio7\/value<\/pre>\n
The list of GPIO numbers can be found below.<\/p>\n
 <\/p>\n<\/div>\n
<\/a>CPU Module<\/h2>\n
\n
 <\/p>\n
The two color led can be controlled by two GPIO pins.<\/p>\n
 <\/p>\n\n\n\n\n\n
Color<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\nNotes<\/th>\n<\/tr>\n
Green<\/td>\n2-4<\/td>\n68<\/td>\noutput is inverted, 0 is on<\/td>\n<\/tr>\n
Red<\/td>\n2-5<\/td>\n69<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
 <\/h2>\n
<\/a>Verno 3\/4\/Cadun<\/h2>\n
\n
 <\/p>\n
There are 8 GPIOs on J12 with a signal level of 3.3V and 14 more on J16 using the GPIO expander.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Connector<\/th>\nPin<\/th>\nSignal<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\n<\/tr>\n
J12<\/td>\n4<\/td>\nGPIO_0<\/td>\n0-7<\/td>\n7<\/td>\n<\/tr>\n
J12<\/td>\n8<\/td>\nGPIO_2<\/td>\n1-21<\/td>\n53<\/td>\n<\/tr>\n
J12<\/td>\n12<\/td>\nGPIO_4<\/td>\n2-19<\/td>\n83<\/td>\n<\/tr>\n
J12<\/td>\n14<\/td>\nGPIO_5<\/td>\n3-9<\/td>\n105<\/td>\n<\/tr>\n
J12<\/td>\n16<\/td>\nGPIO_6<\/td>\n2-18<\/td>\n82<\/td>\n<\/tr>\n
J12<\/td>\n18<\/td>\nGPIO_7<\/td>\n3-10<\/td>\n106<\/td>\n<\/tr>\n
J12<\/td>\n20<\/td>\nGPIO_8<\/td>\n0-13<\/td>\n13<\/td>\n<\/tr>\n
J12<\/td>\n22<\/td>\nGPIO_9<\/td>\n0-12<\/td>\n12<\/td>\n<\/tr>\n
J16<\/td>\n3<\/td>\nGPIO_I2C_0<\/td>\n <\/td>\n128<\/td>\n<\/tr>\n
J16<\/td>\n4<\/td>\nGPIO_I2C_8<\/td>\n <\/td>\n136<\/td>\n<\/tr>\n
J16<\/td>\n5<\/td>\nGPIO_I2C_1<\/td>\n <\/td>\n129<\/td>\n<\/tr>\n
J16<\/td>\n6<\/td>\nGPIO_I2C_9<\/td>\n <\/td>\n137<\/td>\n<\/tr>\n
J16<\/td>\n7<\/td>\nGPIO_I2C_2<\/td>\n <\/td>\n130<\/td>\n<\/tr>\n
J16<\/td>\n8<\/td>\nGPIO_I2C_10<\/td>\n <\/td>\n138<\/td>\n<\/tr>\n
J16<\/td>\n9<\/td>\nGPIO_I2C_3<\/td>\n <\/td>\n131<\/td>\n<\/tr>\n
J16<\/td>\n10<\/td>\nGPIO_I2C_11<\/td>\n <\/td>\n139<\/td>\n<\/tr>\n
J16<\/td>\n11<\/td>\nGPIO_I2C_4<\/td>\n <\/td>\n132<\/td>\n<\/tr>\n
J16<\/td>\n12<\/td>\nGPIO_I2C_12<\/td>\n <\/td>\n140<\/td>\n<\/tr>\n
J16<\/td>\n13<\/td>\nGPIO_I2C_5<\/td>\n <\/td>\n133<\/td>\n<\/tr>\n
J16<\/td>\n14<\/td>\nGPIO_I2C_13<\/td>\n <\/td>\n141<\/td>\n<\/tr>\n
J16<\/td>\n15<\/td>\nGPIO_I2C_6<\/td>\n <\/td>\n134<\/td>\n<\/tr>\n
J16<\/td>\n17<\/td>\nGPIO_I2C_7<\/td>\n <\/td>\n135<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
 <\/h2>\n
<\/a>Lothron 3<\/h2>\n
 <\/p>\n
The Lothron 3 has 8 accessible GPIO pins on J25.<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Connector<\/th>\nPin<\/th>\nSignal<\/th>\nBank and pin<\/th>\nGPIO Number<\/th>\n<\/tr>\n
J25<\/td>\n11<\/td>\nGPIO_0<\/td>\n0-7<\/td>\n7<\/td>\n<\/tr>\n
J25<\/td>\n13<\/td>\nGPIO_2<\/td>\n1-21<\/td>\n53<\/td>\n<\/tr>\n
J25<\/td>\n15<\/td>\nGPIO_4<\/td>\n2-19<\/td>\n83<\/td>\n<\/tr>\n
J25<\/td>\n16<\/td>\nGPIO_5<\/td>\n3-9<\/td>\n105<\/td>\n<\/tr>\n
J25<\/td>\n17<\/td>\nGPIO_6<\/td>\n2-18<\/td>\n82<\/td>\n<\/tr>\n
J25<\/td>\n18<\/td>\nGPIO_7<\/td>\n3-10<\/td>\n106<\/td>\n<\/tr>\n
J25<\/td>\n19<\/td>\nGPIO_8<\/td>\n0-13<\/td>\n13<\/td>\n<\/tr>\n
J25<\/td>\n20<\/td>\nGPIO_9<\/td>\n0-12<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"
Enabling GPIO control To get access to an GPIO pin, first, write the GPIO number to \/sys\/class\/gpio\/export echo 7 [gt] \/sys\/class\/gpio\/export 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: echo out [gt] \/sys\/class\/gpio\/gpio7\/direction The value (0 for […]<\/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-234221","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nGPIOs on DIMM-AM335 under Linux - emtrion<\/title>\n<meta name=\"description\" content=\"Learn how to enable and control GPIOs on DIMM-AM335 under Linux with step-by-step instructions and detailed GPIO pin mappings for various modules.\" \/>\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-dimm-am335-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 DIMM-AM335 under Linux - 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