Crate gpiod_core
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§libgpiod in Rust
Rust crate for interfacing with Linux GPIO character devices.
It provides an interface to the Linux GPIO using the chardev module. This interface involves calling ioctl funcions which are unsafe and require some unintuitive variable mapping. The functionality provided here is highly inspired by libgpiod.
Since all functionality is dependent on Linux function calls, this crate only compiles for Linux systems.
§ABI compatibility
Both ABI v1 (linux >= 4.0) and v2 (linux >= v5.10) supported but edge detection implemented for v2 only. Deprecated sysfs-based API (linux < 4.0) currently is not supported at all.
§Crates
- gpiod-core - core abstractions and low level interface (not for end users)
- gpiod - sync interface which supports synchronous operation only
- tokio-gpiod - async interface for tokio fans
- async-gpiod - async interface to use with non-tokio async runtimes
Structs§
- GPIO chip interface info
- Signal edge detection event
- Input direction
- Wrapper to hide internals
- The information of a specific GPIO line
- Line offset to bit offset mapping
- Line values with mask
- GPIO line values request options
- Output direction
- A slice of a path (akin to
str
). - An owned, mutable path (akin to
String
). - A
Duration
type to represent a span of time, typically used for system timeouts. - GPIO lines values interface info
Enums§
- Active state condition of a line
- Input bias of a GPIO line
- Direction of a GPIO line
- Output drive mode of a GPIO line
- Signal edge or level transition of a GPIO line
- Edge detection setting for GPIO line
Constants§
- Maximum number of bits which can be get or set per time
- Maximum number of values which can be get or set per time
Traits§
- Device path trait
- Something that can be used to get GPIO line values
- Something that can be used to get and set GPIO line values
- Direction trait
Functions§
- This definition from libc
- This definition from libc
- Set non-block flag to fd
Type Aliases§
- Bit offset
- Value bits and mask
- Line offset
- Raw event ro read from fd
- A specialized
Result
type for I/O operations. - Default values representation