2 releases
0.1.1 | Aug 2, 2024 |
---|---|
0.1.0 | Jul 15, 2024 |
#624 in Embedded development
135 downloads per month
35KB
680 lines
An embedded-hal
focused driver for the SX1509 I/O expander.
This crate allows you to use the expansion pins on the SX1509 as if they were simply GPIO pins on your microcontroller.
Portable Atomic
This crate uses portable-atomic
to provide platform-agnostic atomic operations. This is necessary to implement the internal shared i2c bus. You may need to enable certain features of portable-atomic
to get this crate to compile on platforms that don't natively support atomic operations.
Usage
// 0x3F is used here, the actual address will vary
// depending on the configuration of the ADDR
// pins on the chip.
let mut expander = Sx1509::new(i2c, 0x3F).unwrap();
// This borrows the expander, so the expander
// cannot be dropped before it's pins.
let sx1509::Pins {
a0,
a1,
..
} = expander.split();
let pin_0 = a0.into_output().unwrap();
let pin_1 = a1.into_input().unwrap();
pin_0.set_high().unwrap();
assert_eq!(pin_1.is_high().unwrap(), true);
Dependencies
~1MB
~18K SLoC