nxp-pcf8523 1.0.0

A no-std driver for the NXP PCF8523 RTC and calendar module.
Documentation

NXP PCF8523

#![no_std] driver for the NXP PCF8523 RTC and calendar module built on top of the Rust embedded-hal. Supported I2C modes include standard (100 kHz), fast (400 kHz) and fast+ (1_000 kHz), and the module has a fixed I2C address of 0x68.

Usage

use nxp_pcf8523::Pcf8523;
use nxp_pcf8523::datetime::Pcf8523DateTime;

// configure I2C bus at 100, 400 or 1_000 kHz...

let mut pcf8523 = Pcf8523::new(i2c_bus, Pcf8523T {}) ?;
// 1:41:13PM on 08.21.2025
let dt = Pcf8523DateTime::new(13, 41, 13, 8, 21, 25) ?;
pcf8523.set_datetime(dt) ?;
pcf8523.set_power_management(PowerManagement::SwitchOverStandardOnLowDetectionOn) ?;
pcf8523.start() ?;
let now = pcf8523.now() ?.timestamp();

Examples

Tests

From the root dir: $ cargo test

TODO

  • Async

Resources

Acknowledgements

License