From 30d86863a4311d486585a364e25923550b4ccbee Mon Sep 17 00:00:00 2001 From: Ian McIntyre Date: Sun, 14 Sep 2025 20:39:38 -0400 Subject: First commit --- .gitignore | 1 + Cargo.lock | 217 +++++++++++++++++++++++++++++++ Cargo.toml | 7 + LICENSE | 374 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ examples/power.rs | 25 ++++ src/lib.rs | 211 ++++++++++++++++++++++++++++++ 6 files changed, 835 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 LICENSE create mode 100644 examples/power.rs create mode 100644 src/lib.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..0e59e72 --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,217 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 4 + +[[package]] +name = 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+[dependencies] +serialport = "4.6.1" diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..570135f --- /dev/null +++ b/LICENSE @@ -0,0 +1,374 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at https://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. + diff --git a/examples/power.rs b/examples/power.rs new file mode 100644 index 0000000..120f424 --- /dev/null +++ b/examples/power.rs @@ -0,0 +1,25 @@ +//! Change the supply's output state. + +use std::env; + +use bkp_168xb::{Output, PowerSupply}; + +static USAGE: &'static str = "Usage: power on [PORT] | power off [PORT]"; + +fn main() { + let mut args = env::args().skip(1); + let output = args + .next() + .and_then(|arg| match arg.to_lowercase().as_str() { + "off" => Some(Output::Off), + "on" => Some(Output::On), + _ => None, + }) + .expect(USAGE); + let port = args.next().expect(USAGE); + + let mut ps = PowerSupply::open(port).unwrap(); + let (volt, curr) = ps.get_max_voltage_current().unwrap(); + println!("{volt} {curr}"); + ps.set_output(output).unwrap() +} diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..b3ddcd9 --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,211 @@ +//! Host-side control interface for B&K Precision 16xB Power Supplies. +//! +//! The library optimizes for the 1687B and 1688B models. This library +//! doe not support two decimal places for current on the 1685B model. +//! +//! This library has no affiliation with B&K Precision. + +use std::{ + fmt::{Debug, Display}, + str::from_utf8, +}; + +use serialport::SerialPort; +pub use serialport::{Error as SerialError, ErrorKind as SerialErrorKind}; + +pub enum Error { + UnexpectedResponse, + Parse, + Serial(SerialError), +} + +impl From for Error { + fn from(value: SerialError) -> Self { + Self::Serial(value) + } +} + +impl From for Error { + fn from(value: std::io::Error) -> Self { + Self::Serial(value.into()) + } +} + +impl From for Error { + fn from(_: std::num::ParseFloatError) -> Self { + Self::Parse + } +} + +impl From for Error { + fn from(_: std::str::Utf8Error) -> Self { + Self::Parse + } +} + +pub type Result = std::result::Result; + +/// An interface to the power supply. +pub struct PowerSupply { + port: Box, +} + +impl PowerSupply { + pub fn open(path: impl AsRef) -> Result { + serialport::new(path.as_ref(), 9600) + .data_bits(serialport::DataBits::Eight) + .parity(serialport::Parity::None) + .stop_bits(serialport::StopBits::One) + .flow_control(serialport::FlowControl::None) + .timeout(std::time::Duration::from_millis(100)) + .open() + .map(|port| PowerSupply { port }) + .map_err(From::from) + } + + fn parse_volts(&mut self) -> Result { + let mut buff = [0u8; 3]; + self.port.read_exact(&mut buff)?; + let volts: f64 = from_utf8(&buff)?.parse()?; + Ok(volts / 10.0) + } + + fn parse_current(&mut self) -> Result { + let mut buff = [0u8; 3]; + self.port.read_exact(&mut buff)?; + let current: f64 = from_utf8(&buff)?.parse()?; + Ok(current / 10.0) + } + + fn parse_cr(&mut self) -> Result<()> { + let mut buff = [0; 1]; + self.port.read_exact(&mut buff)?; + if buff[0] == b'\r' { + Ok(()) + } else { + Err(Error::UnexpectedResponse) + } + } + + fn parse_ok(&mut self) -> Result<()> { + let mut buff = [0; 2]; + self.port.read_exact(&mut buff)?; + if &buff == b"OK" { + Ok(()) + } else { + Err(Error::UnexpectedResponse) + } + } + + fn parse_end(&mut self) -> Result<()> { + self.parse_ok()?; + self.parse_cr()?; + Ok(()) + } + + fn write_command(&mut self, cmd: &[u8]) -> Result<()> { + self.port.write_all(cmd)?; + self.port.flush()?; + Ok(()) + } + + /// Set the supply output state. + pub fn set_output(&mut self, output: Output) -> Result<()> { + self.write_command(match output { + Output::Off => b"SOUT1\r", + Output::On => b"SOUT0\r", + })?; + self.parse_end()?; + Ok(()) + } + + /// Read the supply's maximum voltage and current. + pub fn max_voltage_current(&mut self) -> Result<(f64, f64)> { + self.write_command(b"GMAX\r")?; + + let volts = self.parse_volts()?; + let amps = self.parse_current()?; + self.parse_end()?; + + Ok((volts, amps)) + } +} + +/// The power supply output state. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum Output { + /// Supply off. + Off, + /// Supply on. + On, +} + +impl From for Output { + fn from(value: bool) -> Self { + if value { + Self::On + } else { + Self::Off + } + } +} + +/// Power supply model +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +#[non_exhaustive] +pub enum Model { + /// BK Precision 1687B. + /// + /// 36V - 10A. + Bkp1687B, +} + +/// A voltage setting. +/// +/// This has a 0.1V resolution across all power supply models. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub struct Voltage( + u32, /* Internally represented as mV; see GETD command. */ +); + +impl Display for Voltage { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {} +} + +impl Voltage { + pub const fn from_f64_v(volts: f64) -> Voltage { + Voltage((volts * 1000.0f64) as u32) + } + + pub const fn from_f32_v(volts: f32) -> Voltage { + Voltage((volts * 1000.0f32) as u32) + } + + pub const fn from_mv(millivolts: u32) -> Voltage { + Voltage(millivolts / 10 * 10) + } +} + +/// A current setting. +/// +/// On the 1687B and 1688B models, this has +/// a 0.1A resolution. On the 1685B model, this +/// has a 0.01A resolution. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub struct Current( + u32, /* Internally represented as mA; see GETD command. */ +); + +impl Current { + pub const fn from_f64_a(amps: f64) -> Current { + Current((amps * 1000.0f64) as u32) + } + + pub const fn from_f32_a(amps: f32) -> Current { + Current((amps * 1000.0f32) as u32) + } + + pub const fn from_ma(milliamps: u32) -> Current { + Current(milliamps) + } +} -- cgit v1.2.3