AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/GPIOs

From DAVE Developer's Wiki
Jump to: navigation, search
Version Issue Date Notes
1.0.0 Jul 2021 First DESK release

GPIOs interface[edit | edit source]

i.MX6UL can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell.

Description[edit | edit source]

The GPIOs interface available on the Evaluation Kit at the connector JP1. JP1 is a 2x6x2.54mm header pinstrip connector.

GPIOs connector

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1 - 3.3V - -
2 - DGND Ground -
3 J1.93 GPIO_IN_0 GPIO2_IO09
4 J1.107 GPIO_OUT_0 GPIO2_IO12
5 J1.95 GPIO_IN_1 GPIO2_IO08
6 J1.38 GPIO_OUT_1 GPIO1_IO00
7 J1.97 GPIO_IN_2 GPIO2_IO11
8 J1.78 GPIO_OUT_2 GPIO4_IO24
9 J1.99 GPIO_IN_3 GPIO2_IO10
10 J1.80 GPIO_OUT_3 GPIO4_IO22
11 J1.105 GPIO_IN_4 GPIO2_IO13
12 J1.179 GPIO_OUT_4 GPIO1_IO23

Device mapping[edit | edit source]

GPIOs can be used directly on Linux kernel device driver or can be configured on the device tree.

Device usage[edit | edit source]

See the GPIOs page on the DESK-MX6UL-L Software Manual.