Beaglebone gpio kernel driver

BeagleWire software support is still developing. A lot of useful examples and ready to use solutions can be found there. This is an easy and efficient solution. BeagleWire software repository has special components for it. You can just map your logic in BeagleBone memory. A lot of examples have kernel driver e. A part of examples do not belong to kernel subsystems e. The project is the result of the community work and it is still under development. If you can support this project or if you have any questions, feel free to contact us.

Michael Welling mwelling ieee. Programming is done by SPI interface. SPI frequency should be between 1Mhz and 25Mhz. BeagleWire contains four Digilent Inc. Pmod ports. The Pmod standard has a lot of ready modules. Thanks to four Pmod ports we can use as many as 24 additional pins. Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search.

As I have seen in the chapter " In order to generate an interrupt request to a host processor upon a defined event level or logic transition occurring on a GPIO pin, the GPIO configuration registers have to be programmed as follows:. Bits Control the way mandatory clocks are managed.

Any OCP access to module results in an error, except if resulting from a module wakeup asynchronous wakeup. Interface clock if not used for functions may be gated according to the clock domain state. Functional clocks are guarantied to stay present. As long as in this configuration, power domain sleep transition cannot happen. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.

View code. Introduce 2. Prepare 3. Source organization 4. Kernel configuration. Introduce Device driver is a piece of code that configures and manages a device. The device driver code knows, how to configure the device, sending data to the device, and it knows how to process requests which originate from the device.

When the device driver code is loaded into the operating system such as Linux, it exposes interfaces to the user-space so that the user application can communicate with the device. There are three types of device drivers: Character device drivers: character devices RTC, keyboard, sensor, Block device drivers: storage devices mmc, eeproom, flash, harddisk, Network device drivers: network devices ethernet, wifi, bluetooth, Prepare Sortware Hardware ubuntu That being said, the kernel wants to be as generic as possible.

Architecture-specific code is separated from the rest, and falls into this directory. It contains the descriptions of APIs used for different kernel frameworks and subsystems. You should look here prior to asking any questions on forums.