From 9532c1b462fe5acbb4ffa55e4cb44cd1e2608132 Mon Sep 17 00:00:00 2001 From: Diego Barrios Romero Date: Sun, 28 Oct 2018 10:31:13 +0100 Subject: [PATCH] Initial version --- .gitignore | 6 ++ CHANGELOG.md | 11 +++ Cargo.toml | 34 +++++++ LICENSE-APACHE | 176 ++++++++++++++++++++++++++++++++++++ LICENSE-MIT | 19 ++++ README.md | 44 +++++++++ src/ds323x.rs | 69 ++++++++++++++ src/interface.rs | 103 +++++++++++++++++++++ src/lib.rs | 229 +++++++++++++++++++++++++++++++++++++++++++++++ 9 files changed, 691 insertions(+) create mode 100644 .gitignore create mode 100644 CHANGELOG.md create mode 100644 Cargo.toml create mode 100644 LICENSE-APACHE create mode 100644 LICENSE-MIT create mode 100644 README.md create mode 100644 src/ds323x.rs create mode 100644 src/interface.rs create mode 100644 src/lib.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d7fe530 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +**/*.rs.bk +.#* +/target/ +Cargo.lock +.gdb_history + diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000..f1a6ee5 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,11 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). + +## [Unreleased] + +... + diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..c2b6d30 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,34 @@ +[package] +name = "ds323x" +version = "0.1.0" +authors = ["Diego Barrios Romero "] +repository = "https://github.com/eldruin/ds323x-rs" +license = "MIT OR Apache-2.0" +description = "Platform-agnostic Rust driver for the DS3231, DS3232 and DS3234 extremely accurate real-time clocks (RTC)." +readme = "README.md" +keywords = ["rtc", "clock", "real-time", "driver", "embedded-hal-driver"] +categories = ["embedded", "hardware-support", "no-std"] +homepage = "https://github.com/eldruin/ds323x-rs" +documentation = "https://docs.rs/ds323x" +include = [ + "**/*.rs", + "Cargo.toml", + "README.md", + "CHANGELOG.md", + "LICENSE-MIT", + "LICENSE-APACHE", +] + +[badges.travis-ci] +branch = "master" +repository = "eldruin/ds323x-rs" + +[dependencies] +embedded-hal = "0.2" + +[dev-dependencies] +linux-embedded-hal = "0.2" +embedded-hal-mock = "0.4" + +[profile.release] +lto = true diff --git a/LICENSE-APACHE b/LICENSE-APACHE new file mode 100644 index 0000000..1b5ec8b --- /dev/null +++ b/LICENSE-APACHE @@ -0,0 +1,176 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + +2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + +3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + +4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + +5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + +6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + +7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + +8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + +9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + +END OF TERMS AND CONDITIONS diff --git a/LICENSE-MIT b/LICENSE-MIT new file mode 100644 index 0000000..c75da13 --- /dev/null +++ b/LICENSE-MIT @@ -0,0 +1,19 @@ +Copyright (C) 2018 Diego Barrios Romero + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..a2d4095 --- /dev/null +++ b/README.md @@ -0,0 +1,44 @@ +# Rust DS3231, DS3232 and DS3234 Extremely Accurate Real-Time Clock Driver [![crates.io](https://img.shields.io/crates/v/ds323x.svg)](https://crates.io/crates/ds323x) [![Docs](https://docs.rs/ds323x/badge.svg)](https://docs.rs/ds323x) [![Build Status](https://travis-ci.org/eldruin/ds323x-rs.svg?branch=master)](https://travis-ci.org/eldruin/ds323x-rs) + +This is a platform agnostic Rust driver for the DS3231, DS3232 and DS3234 +extremely accurate real-time clocks, based on the [`embedded-hal`] traits. + +[`embedded-hal`]: https://github.com/rust-embedded/embedded-hal + +This driver allows you to: +- Read/write the seconds. + +## The devices + +This driver is compatible with the DS3231 and DS3232 I2C devices and the +DS3234 SPI device. + +### DS3231 +TODO + +### DS3232 +TODO + +### DS3234 +TODO + +Datasheets: +- [DS3231](https://datasheets.maximintegrated.com/en/ds/DS3231.pdf) +- [DS3232](https://datasheets.maximintegrated.com/en/ds/DS3232.pdf) +- [DS3234](https://datasheets.maximintegrated.com/en/ds/DS3234.pdf) + +## License + +Licensed under either of + + * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or + http://www.apache.org/licenses/LICENSE-2.0) + * MIT license ([LICENSE-MIT](LICENSE-MIT) or + http://opensource.org/licenses/MIT) at your option. + +### Contributing + +Unless you explicitly state otherwise, any contribution intentionally submitted +for inclusion in the work by you, as defined in the Apache-2.0 license, shall +be dual licensed as above, without any additional terms or conditions. + diff --git a/src/ds323x.rs b/src/ds323x.rs new file mode 100644 index 0000000..7cd3d00 --- /dev/null +++ b/src/ds323x.rs @@ -0,0 +1,69 @@ +//! Common implementation + +#![deny(missing_docs)] + +extern crate embedded_hal as hal; +use super::{ Ds323x, Register, Error }; +use interface::{ ReadRegister, WriteRegister }; + +impl Ds323x +where + DI: ReadRegister + WriteRegister +{ + /// Read the seconds. + pub fn get_seconds(&mut self) -> Result> { + let data = self.iface.read_register(Register::SECONDS)?; + Ok(packed_bcd_to_decimal(data)) + } + + /// Set the seconds [0-59]. + /// + /// Will return an `Error::InvalidInputData` if the seconds are out of range. + pub fn set_seconds(&mut self, seconds: u8) -> Result<(), Error> { + if seconds > 59 { + return Err(Error::InvalidInputData); + } + self.iface.write_register(Register::SECONDS, decimal_to_packed_bcd(seconds)) + } +} + +// Transforms a decimal number to packed BCD format +fn decimal_to_packed_bcd(dec: u8) -> u8 { + ((dec / 10) << 4) | (dec % 10) +} + +// Transforms a number in packed BCD format to decimal +fn packed_bcd_to_decimal(bcd: u8) -> u8 { + (bcd >> 4) * 10 + (bcd & 0xF) +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn can_convert_packed_bcd_to_decimal() { + assert_eq!(0, packed_bcd_to_decimal(0b0000_0000)); + assert_eq!(1, packed_bcd_to_decimal(0b0000_0001)); + assert_eq!(9, packed_bcd_to_decimal(0b0000_1001)); + assert_eq!(10, packed_bcd_to_decimal(0b0001_0000)); + assert_eq!(11, packed_bcd_to_decimal(0b0001_0001)); + assert_eq!(19, packed_bcd_to_decimal(0b0001_1001)); + assert_eq!(20, packed_bcd_to_decimal(0b0010_0000)); + assert_eq!(21, packed_bcd_to_decimal(0b0010_0001)); + assert_eq!(59, packed_bcd_to_decimal(0b0101_1001)); + } + + #[test] + fn can_convert_decimal_to_packed_bcd() { + assert_eq!(0b0000_0000, decimal_to_packed_bcd( 0)); + assert_eq!(0b0000_0001, decimal_to_packed_bcd( 1)); + assert_eq!(0b0000_1001, decimal_to_packed_bcd( 9)); + assert_eq!(0b0001_0000, decimal_to_packed_bcd(10)); + assert_eq!(0b0001_0001, decimal_to_packed_bcd(11)); + assert_eq!(0b0001_1001, decimal_to_packed_bcd(19)); + assert_eq!(0b0010_0000, decimal_to_packed_bcd(20)); + assert_eq!(0b0010_0001, decimal_to_packed_bcd(21)); + assert_eq!(0b0101_1001, decimal_to_packed_bcd(59)); + } +} \ No newline at end of file diff --git a/src/interface.rs b/src/interface.rs new file mode 100644 index 0000000..97497ff --- /dev/null +++ b/src/interface.rs @@ -0,0 +1,103 @@ +//! I2C/SPI interfaces + +#![deny(missing_docs)] + +extern crate embedded_hal as hal; +use hal::blocking; +use super::{ DEVICE_ADDRESS, Error }; + +/// I2C interface +#[derive(Debug, Default)] +pub struct I2cInterface { + pub(crate) i2c: I2C, +} + +/// SPI interface +#[derive(Debug, Default)] +pub struct SpiInterface { + pub(crate) spi: SPI, + pub(crate) cs: CS +} + +/// Write to a register +pub trait WriteRegister { + /// Error type + type Error; + /// Write to an u8 register + fn write_register(&mut self, register: u8, data: u8) -> Result<(), Error>; +} + +impl WriteRegister for I2cInterface +where + I2C: blocking::i2c::Write +{ + type Error = E; + fn write_register(&mut self, register: u8, data: u8) -> Result<(), Error> { + let payload: [u8; 2] = [register, data]; + self.i2c + .write(DEVICE_ADDRESS, &payload) + .map_err(Error::Comm) + } +} + +impl WriteRegister for SpiInterface +where + SPI: blocking::spi::Write, + CS: hal::digital::OutputPin +{ + type Error = E; + fn write_register(&mut self, register: u8, data: u8) -> Result<(), Error> { + self.cs.set_low(); + + let payload: [u8; 2] = [register + 0x80, data]; + let result = self.spi + .write(&payload) + .map_err(Error::Comm); + + self.cs.set_high(); + result + } +} + + +/// Read a register +pub trait ReadRegister { + /// Error type + type Error; + /// Read an u8 register + fn read_register(&mut self, register: u8) -> Result>; +} + +impl ReadRegister for I2cInterface +where + I2C: blocking::i2c::WriteRead +{ + type Error = E; + fn read_register(&mut self, register: u8) -> Result> { + let mut data = [0]; + self.i2c + .write_read(DEVICE_ADDRESS, &[register], &mut data) + .map_err(Error::Comm) + .and(Ok(data[0])) + } +} + +impl ReadRegister for SpiInterface +where + SPI: blocking::spi::Transfer, + CS: hal::digital::OutputPin +{ + type Error = E; + fn read_register(&mut self, register: u8) -> Result> { + self.cs.set_low(); + let mut data = [register, 0]; + { + let result = self.spi + .transfer(&mut data) + .map_err(Error::Comm); + self.cs.set_high(); + result?; + } + Ok(data[1]) + } +} diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..4083048 --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,229 @@ +//! This is a platform agnostic Rust driver for the DS3231, DS3232 and DS3234 +//! extremely accurate real-time clocks, based on the [`embedded-hal`] traits. +//! +//! [`embedded-hal`]: https://github.com/rust-embedded/embedded-hal +//! +//! This driver allows you to: +//! - Read/write the seconds. +//! +//! ## The devices +//! +//! This driver is compatible with the DS3231 and DS3232 I2C devices and the +//! DS3234 SPI device. +//! +//! ### DS3231 +//! TODO +//! +//! ### DS3232 +//! TODO +//! +//! ### DS3234 +//! TODO +//! +//! Datasheets: +//! - [DS3231](https://datasheets.maximintegrated.com/en/ds/DS3231.pdf) +//! - [DS3232](https://datasheets.maximintegrated.com/en/ds/DS3232.pdf) +//! - [DS3234](https://datasheets.maximintegrated.com/en/ds/DS3234.pdf) +//! + +#![deny(unsafe_code)] +#![deny(missing_docs)] +#![no_std] + +extern crate embedded_hal as hal; +use hal::blocking; +use core::marker::PhantomData; + +/// All possible errors in this crate +#[derive(Debug)] +pub enum Error { + /// I²C/SPI bus error + Comm(E), + /// Invalid input data provided + InvalidInputData +} + +struct Register; + +impl Register { + const SECONDS : u8 = 0x00; + } + +const DEVICE_ADDRESS: u8 = 0b110_1000; + +/// IC markers +pub mod ic { + /// DS3231 IC marker + pub struct DS3231; + /// DS3232 IC marker + pub struct DS3232; + /// DS3234 IC marker + pub struct DS3234; +} +pub mod interface; +use interface::{ I2cInterface, SpiInterface }; + +/// DS3231, DS3232 and DS3234 RTC driver +#[derive(Debug, Default)] +pub struct Ds323x { + iface: DI, + _ic: PhantomData +} + +impl Ds323x, ic::DS3231> +where + I2C: blocking::i2c::Write + blocking::i2c::WriteRead +{ + /// Create a new instance of the DS3231 device. + pub fn new_ds3231(i2c: I2C) -> Self { + Ds323x { + iface: I2cInterface { + i2c, + }, + _ic: PhantomData + } + } + + /// Destroy driver instance, return I²C bus instance. + pub fn destroy_ds3231(self) -> I2C { + self.iface.i2c + } +} + +impl Ds323x, ic::DS3232> +where + I2C: blocking::i2c::Write + blocking::i2c::WriteRead +{ + /// Create a new instance of the DS3232 device. + pub fn new_ds3232(i2c: I2C) -> Self { + Ds323x { + iface: I2cInterface { + i2c, + }, + _ic: PhantomData + } + } + + /// Destroy driver instance, return I²C bus instance. + pub fn destroy_ds3232(self) -> I2C { + self.iface.i2c + } +} + +impl Ds323x, ic::DS3234> +where + SPI: blocking::spi::Transfer + blocking::spi::Write, + CS: hal::digital::OutputPin +{ + /// Create a new instance. + pub fn new_ds3234(spi: SPI, chip_select: CS) -> Self { + Ds323x { + iface: SpiInterface { + spi, + cs: chip_select + }, + _ic: PhantomData + } + } + + /// Destroy driver instance, return SPI bus instance and CS output pin. + pub fn destroy_ds3234(self) -> (SPI, CS) { + (self.iface.spi, self.iface.cs) + } +} + +mod ds323x; + +#[cfg(test)] +mod tests { + use super::*; + extern crate embedded_hal_mock as hal; + extern crate std; + use self::std::vec; + + struct DummyOutputPin; + impl embedded_hal::digital::OutputPin for DummyOutputPin { + fn set_low(&mut self) {} + fn set_high(&mut self) {} + } + + mod ds3231 { + use super::*; + + #[test] + fn can_create() { + Ds323x::new_ds3231(hal::i2c::Mock::new(&[])); + } + + #[test] + fn can_get_seconds() { + let transactions = [ + hal::i2c::Transaction::write_read(DEVICE_ADDRESS, vec![Register::SECONDS], vec![1]) + ]; + let mut dev = Ds323x::new_ds3231(hal::i2c::Mock::new(&transactions)); + assert_eq!(1, dev.get_seconds().unwrap()); + } + + #[test] + fn can_set_seconds() { + let transactions = [ + hal::i2c::Transaction::write(DEVICE_ADDRESS, vec![Register::SECONDS, 1]) + ]; + let mut dev = Ds323x::new_ds3231(hal::i2c::Mock::new(&transactions)); + dev.set_seconds(1).unwrap(); + } + } + mod ds3232 { + use super::*; + + #[test] + fn can_create() { + Ds323x::new_ds3232(hal::i2c::Mock::new(&[])); + } + + #[test] + fn can_get_seconds() { + let transactions = [ + hal::i2c::Transaction::write_read(DEVICE_ADDRESS, vec![Register::SECONDS], vec![1]) + ]; + let mut dev = Ds323x::new_ds3232(hal::i2c::Mock::new(&transactions)); + assert_eq!(1, dev.get_seconds().unwrap()); + } + + #[test] + fn can_set_seconds() { + let transactions = [ + hal::i2c::Transaction::write(DEVICE_ADDRESS, vec![Register::SECONDS, 1]) + ]; + let mut dev = Ds323x::new_ds3232(hal::i2c::Mock::new(&transactions)); + dev.set_seconds(1).unwrap(); + } + } + + mod ds3234 { + use super::*; + + #[test] + fn can_create() { + Ds323x::new_ds3234(hal::spi::Mock::new(&[]), DummyOutputPin); + } + + #[test] + fn can_get_seconds() { + let transactions = [ + hal::spi::Transaction::transfer(vec![Register::SECONDS, 0], vec![Register::SECONDS, 1]) + ]; + let mut dev = Ds323x::new_ds3234(hal::spi::Mock::new(&transactions), DummyOutputPin); + assert_eq!(1, dev.get_seconds().unwrap()); + } + + #[test] + fn can_set_seconds() { + let transactions = [ + hal::spi::Transaction::write(vec![Register::SECONDS + 0x80, 1]) + ]; + let mut dev = Ds323x::new_ds3234(hal::spi::Mock::new(&transactions), DummyOutputPin); + dev.set_seconds(1).unwrap(); + } + } +} \ No newline at end of file