From patchwork Fri Jul 8 11:34:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 588762 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04F5DC433EF for ; Fri, 8 Jul 2022 11:35:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237365AbiGHLfW (ORCPT ); Fri, 8 Jul 2022 07:35:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237499AbiGHLfV (ORCPT ); Fri, 8 Jul 2022 07:35:21 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0908A951D2 for ; Fri, 8 Jul 2022 04:35:19 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id l12so10776913plk.13 for ; Fri, 08 Jul 2022 04:35:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ua8WVVBVbwvOiDb6cmEltYIfkj/SDJgEAU17pUygcsg=; b=LsmmFibcAHV0ggtyIm2RDpXXPFh248zn3HbGZE5WiAaSRE2v0OhrKFjD6g5pDFpOsQ VNSLLhpgP0JAJUSMEhR49UU0TURWOfRyKPuQwoK0HjBe+okv8XMvp/sDQuAWAXTyfT8c F+/nqFPonwbgBjAeGIaOvzu4k+N+KQFlw5NJn+mZuw0Chjfylf4An8CaxOjMAU9q5xSa BkEHdK6Z/yn7IyMKNpqn0tloRW5KdA7mW3IXNDs4OPcZnjyo06SUdt9ucDXfD3TzjHSI ayNV5BG+mtr2gMAPERdcWiYcRjH/KNs8+YW/YDc9IlVsVTUbvH2kp+Vn6bHL4Lqxvuka BnuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ua8WVVBVbwvOiDb6cmEltYIfkj/SDJgEAU17pUygcsg=; b=6MWB4OGD5BoYEovSkVSJ5b7ZpPbLMnCnR1hwQSu4Fw50Zm+VwOKe4HL6hYYBr48SK8 qbcb4Cm3Xclvq9x64UfBpce52B5na3Np53m6pr44toSaZy4+zm5+2+ltAQ++2QIxAuVf VCq/oYq+ZvcFc70gtgjR2WeBBHnePSyB83DA0FiX3lCJfZEjgJnaKpYTB7JYO1c9sXQi To6B0tZTG8lmKkAsQgSoy1fUIApuoDrhn4lTHL+dw8EJWACAzlTJCqvGky9U6n9TE4Ej VAU7Ce5ctLJUNVKoufXyFrRFntAgrEN2wpll5oKC1nsLoUUFBT4K/cyK9KxEMmHisnPx /RWg== X-Gm-Message-State: AJIora+fB98HFRtngaBsQqdcpao3rAszxFXWundkObVm0wbWrrMOX94E DtL+DRZPgyXcMckvnyRhFjurTQ== X-Google-Smtp-Source: AGRyM1uVuUT8OPf+8g9GA8t5jG3f63SkxXSMxje/1b3N1V+5X3lDOo/ppbGeNptngEubCHxKt+okrQ== X-Received: by 2002:a17:902:b7c9:b0:16c:354:a029 with SMTP id v9-20020a170902b7c900b0016c0354a029mr3196861plz.58.1657280118358; Fri, 08 Jul 2022 04:35:18 -0700 (PDT) Received: from localhost ([122.171.18.80]) by smtp.gmail.com with ESMTPSA id j18-20020a63e752000000b0040aeb7e9358sm26932459pgk.90.2022.07.08.04.35.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 04:35:18 -0700 (PDT) From: Viresh Kumar To: Linus Walleij , Bartosz Golaszewski Cc: Viresh Kumar , Vincent Guittot , linux-gpio@vger.kernel.org, Kent Gibson , Miguel Ojeda , Wedson Almeida Filho , =?utf-8?q?Alex_Benn=C3=A9e?= , stratos-dev@op-lists.linaro.org, Gerard Ryan Subject: [PATCH V4 5/8] libgpiod: Add rust examples Date: Fri, 8 Jul 2022 17:04:58 +0530 Message-Id: X-Mailer: git-send-email 2.31.1.272.g89b43f80a514 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add examples for the usage of the rust bindings, quite similar to the ones in cxx bindings. Signed-off-by: Viresh Kumar --- bindings/rust/examples/gpiodetect.rs | 37 ++++++++++++ bindings/rust/examples/gpiofind.rs | 42 +++++++++++++ bindings/rust/examples/gpioget.rs | 42 +++++++++++++ bindings/rust/examples/gpioinfo.rs | 89 ++++++++++++++++++++++++++++ bindings/rust/examples/gpiomon.rs | 68 +++++++++++++++++++++ bindings/rust/examples/gpioset.rs | 52 ++++++++++++++++ 6 files changed, 330 insertions(+) create mode 100644 bindings/rust/examples/gpiodetect.rs create mode 100644 bindings/rust/examples/gpiofind.rs create mode 100644 bindings/rust/examples/gpioget.rs create mode 100644 bindings/rust/examples/gpioinfo.rs create mode 100644 bindings/rust/examples/gpiomon.rs create mode 100644 bindings/rust/examples/gpioset.rs diff --git a/bindings/rust/examples/gpiodetect.rs b/bindings/rust/examples/gpiodetect.rs new file mode 100644 index 000000000000..82307e4eecea --- /dev/null +++ b/bindings/rust/examples/gpiodetect.rs @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of gpiodetect tool. + +use std::env; +use std::fs; +use std::path::Path; + +use libgpiod::{gpiod_is_gpiochip_device, Chip}; + +fn main() { + let args: Vec = env::args().collect(); + if args.len() > 1 { + println!("Usage: {}", args[0]); + return; + } + + for entry in fs::read_dir(Path::new("/dev")).unwrap() { + let pathbuf = entry.unwrap().path(); + let path = pathbuf.to_str().unwrap(); + + if gpiod_is_gpiochip_device(path) { + let chip = Chip::open(path).unwrap(); + let ngpio = chip.get_num_lines(); + + println!( + "{} [{}] ({})", + chip.get_name().unwrap(), + chip.get_label().unwrap(), + ngpio + ); + } + } +} diff --git a/bindings/rust/examples/gpiofind.rs b/bindings/rust/examples/gpiofind.rs new file mode 100644 index 000000000000..bbbd7a87ece8 --- /dev/null +++ b/bindings/rust/examples/gpiofind.rs @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of gpiofind tool. + +use std::env; +use std::fs; +use std::path::Path; + +use libgpiod::{gpiod_is_gpiochip_device, Chip}; + +fn main() { + let args: Vec = env::args().collect(); + if args.len() != 2 { + println!("Usage: {} ", args[0]); + return; + } + + for entry in fs::read_dir(Path::new("/dev")).unwrap() { + let pathbuf = entry.unwrap().path(); + let path = pathbuf.to_str().unwrap(); + + if gpiod_is_gpiochip_device(path) { + let chip = Chip::open(path).unwrap(); + + let offset = chip.find_line(&args[1]); + if offset.is_ok() { + println!( + "Line {} found: Chip: {}, offset: {}", + args[1], + chip.get_name().unwrap(), + offset.unwrap() + ); + return; + } + } + } + + println!("Failed to find line: {}", args[1]); +} diff --git a/bindings/rust/examples/gpioget.rs b/bindings/rust/examples/gpioget.rs new file mode 100644 index 000000000000..c3bc35fcfdb6 --- /dev/null +++ b/bindings/rust/examples/gpioget.rs @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of gpioget tool. + +use std::env; + +use libgpiod::{Chip, Direction, LineConfig, RequestConfig}; + +fn main() { + let args: Vec = env::args().collect(); + if args.len() < 3 { + println!("Usage: {} ...", args[0]); + return; + } + + let mut config = LineConfig::new().unwrap(); + let mut offsets = Vec::::new(); + + for arg in &args[2..] { + let offset = arg.parse::().unwrap(); + + offsets.push(offset); + config.set_direction_override(Direction::Input, offset); + } + + let path = format!("/dev/gpiochip{}", args[1]); + let chip = Chip::open(&path).unwrap(); + + let rconfig = RequestConfig::new().unwrap(); + rconfig.set_consumer(&args[0]); + rconfig.set_offsets(&offsets); + + let request = chip.request_lines(&rconfig, &config).unwrap(); + + let mut values: Vec = vec![0; offsets.len()]; + request.get_values(&mut values).unwrap(); + + println!("{:?}", values); +} diff --git a/bindings/rust/examples/gpioinfo.rs b/bindings/rust/examples/gpioinfo.rs new file mode 100644 index 000000000000..bd30d9096ce8 --- /dev/null +++ b/bindings/rust/examples/gpioinfo.rs @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of gpioinfo tool. + +use std::env; +use std::fs; +use std::path::Path; + +use libgpiod::{gpiod_is_gpiochip_device, Chip, Direction}; + +fn line_info(chip: &Chip, offset: u32) { + let info = chip.line_info(offset).unwrap(); + let off = info.get_offset(); + + let name = match info.get_name() { + Ok(name) => name, + _ => "unused", + }; + + let consumer = match info.get_consumer() { + Ok(name) => name, + _ => "unnamed", + }; + + let low = if info.is_active_low() { + "active-low" + } else { + "active-high" + }; + + let dir = match info.get_direction().unwrap() { + Direction::AsIs => "None", + Direction::Input => "Input", + Direction::Output => "Output", + }; + + println!( + "\tline {:>3}\ + \t{:>10}\ + \t{:>10}\ + \t{:>6}\ + \t{:>14}", + off, name, consumer, dir, low + ); +} + +fn chip_info(path: &str) { + if gpiod_is_gpiochip_device(path) { + let chip = Chip::open(path).unwrap(); + let ngpio = chip.get_num_lines(); + + println!("GPIO Chip name: {}", chip.get_name().unwrap()); + println!("\tlabel: {}", chip.get_label().unwrap()); + println!("\tpath: {}", chip.get_path().unwrap()); + println!("\tngpio: {}\n", ngpio); + + println!("\tLine information:"); + + for offset in 0..ngpio { + line_info(&chip, offset); + } + println!("\n"); + } +} + +fn main() { + let args: Vec = env::args().collect(); + if args.len() > 2 { + println!("Usage: {}", args[0]); + return; + } + + if args.len() == 1 { + for entry in fs::read_dir(Path::new("/dev")).unwrap() { + let pathbuf = entry.unwrap().path(); + let path = pathbuf.to_str().unwrap(); + + chip_info(path); + } + } else { + let index = args[1].parse::().unwrap(); + let path = format!("/dev/gpiochip{}", index); + + chip_info(&path); + } +} diff --git a/bindings/rust/examples/gpiomon.rs b/bindings/rust/examples/gpiomon.rs new file mode 100644 index 000000000000..872907b386f3 --- /dev/null +++ b/bindings/rust/examples/gpiomon.rs @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of the gpiomon tool. + +use std::env; +use std::time::Duration; + +use libgpiod::{Chip, Edge, EdgeEventBuffer, Error, LineConfig, LineEdgeEvent, RequestConfig}; + +fn usage(name: &str) { + println!("Usage: {} ...", name); +} + +fn main() { + let args: Vec = env::args().collect(); + if args.len() < 3 { + usage(&args[0]); + return; + } + + let mut config = LineConfig::new().unwrap(); + let mut offsets = Vec::::new(); + + for arg in &args[2..] { + let offset = arg.parse::().unwrap(); + + offsets.push(offset); + } + + config.set_edge_detection_default(Edge::Both); + + let path = format!("/dev/gpiochip{}", args[1]); + let chip = Chip::open(&path).unwrap(); + + let rconfig = RequestConfig::new().unwrap(); + rconfig.set_offsets(&offsets); + + let buffer = EdgeEventBuffer::new(1).unwrap(); + let request = chip.request_lines(&rconfig, &config).unwrap(); + + loop { + match request.wait_edge_event(Duration::new(1, 0)) { + Err(Error::OperationTimedOut) => continue, + Err(x) => { + println!("{:?}", x); + return; + } + Ok(()) => (), + } + + let count = request.read_edge_event(&buffer, 1).unwrap(); + if count == 1 { + let event = buffer.get_event(0).unwrap(); + println!( + "line: {} type: {}, time: {:?}", + event.get_line_offset(), + match event.get_event_type().unwrap() { + LineEdgeEvent::Rising => "Rising", + LineEdgeEvent::Falling => "Falling", + }, + event.get_timestamp() + ); + } + } +} diff --git a/bindings/rust/examples/gpioset.rs b/bindings/rust/examples/gpioset.rs new file mode 100644 index 000000000000..ef70e8edbaae --- /dev/null +++ b/bindings/rust/examples/gpioset.rs @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause +// +// Copyright 2022 Linaro Ltd. All Rights Reserved. +// Viresh Kumar +// +// Simplified Rust implementation of the gpioset tool. + +use std::env; + +use libgpiod::{Chip, Direction, LineConfig, RequestConfig}; + +fn usage(name: &str) { + println!("Usage: {} = ...", name); +} + +fn main() { + let args: Vec = env::args().collect(); + if args.len() < 3 { + usage(&args[0]); + return; + } + + let mut config = LineConfig::new().unwrap(); + let mut offsets = Vec::::new(); + let mut values = Vec::::new(); + + for arg in &args[2..] { + let pair: Vec<&str> = arg.split('=').collect(); + if pair.len() != 2 { + usage(&args[0]); + return; + } + + let offset = pair[0].parse::().unwrap(); + let value = pair[1].parse::().unwrap(); + + offsets.push(offset); + values.push(value as i32); + } + + config.set_direction_default(Direction::Output); + config.set_output_values(&offsets, &values).unwrap(); + + let path = format!("/dev/gpiochip{}", args[1]); + let chip = Chip::open(&path).unwrap(); + + let rconfig = RequestConfig::new().unwrap(); + rconfig.set_consumer(&args[0]); + rconfig.set_offsets(&offsets); + + chip.request_lines(&rconfig, &config).unwrap(); +}