dacx578 0.0.1

Texas Instruments DACx578 Driver for Rust Embedded HAL
Documentation

dacx578

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Unified Rust driver for Texas Instruments DAC5578, DAC6578, and DAC7578 digital-to-analog converters.

This crate is built on top of the Rust embedded-hal and provides a single, resolution-aware API for the entire DACx578 family.

Supported devices

Device Resolution
DAC5578 8-bit
DAC6578 10-bit
DAC7578 12-bit

Origin

This crate is based on the original open-source DAC5578 driver:

The original project provided a clean and minimal driver for the DAC5578.

This codebase extends that work by generalizing the implementation to support the full DACx578 family (DAC5578, DAC6578, DAC7578), adding resolution-aware encoding while preserving the original command structure and API philosophy.

Note: This driver has been tested on the DAC6578. The DAC5578 and DAC7578 are expected to behave similarly based on the original DAC5578 driver and datasheet, but the code has not been fully tested on these devices.

Features

  • Supports all 8 output channels (A–H)
  • Resolution-aware value handling (8 / 10 / 12 bits)
  • Write, update, write-and-update, and global update commands
  • Software reset and I2C general-call support
  • #![no_std] compatible

Usage

Create a driver instance

use dacx578::{DACx578, Address, DacResolution};
use embedded_hal_mock::i2c::Mock;

let i2c = Mock::new(&[]);
let mut dac = DACx578::new(i2c, Address::PinLow, DacResolution::Bits12);

Write to a channel

use dacx578::Channel;

// Write a 12-bit value and update channel A
dac.write_and_update(Channel::A, 0x0FFF).unwrap();

The provided value is automatically masked and aligned according to the selected DAC resolution.

I2C Addressing

The I2C address is selected via the ADDR0 pin:

  • PinLow → 0x48
  • PinHigh → 0x4A
  • PinFloat → 0x4C

Datasheets

Possible Improvements

  • Provide an async version for non-blocking I2C operations
  • Support for the reference voltage (Vref) to allow writing values directly in volts
  • Add an API to read DAC internal registers or status
  • Expand testing to cover DAC5578 and DAC7578 for full compatibility

License

MIT OR Apache-2.0