// Copyright (c) 2018 The rust-gpio-cdev Project Developers. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. use gpio_cdev::{Chip, LineRequestFlags}; use quicli::prelude::*; use structopt::StructOpt; #[derive(Debug, StructOpt)] struct Cli { /// The gpiochip device (e.g. /dev/gpiochip0) chip: String, /// The offset and value of each GPIO line for the provided chip /// in the form "off=<0|1>" line_values: Vec, } // Use like: // muiltioutput /dev/gpiochip0 0=1 1=1 2=0 3=1 4=0 // // to set lines 0, 1, & 3 high // 2 & 4 low // fn do_main(args: Cli) -> std::result::Result<(), gpio_cdev::Error> { let mut chip = Chip::new(args.chip)?; let mut offsets = Vec::new(); let mut values = Vec::new(); for arg in args.line_values { let lv: Vec<&str> = arg.split("=").collect(); offsets.push(lv[0].parse::().unwrap()); values.push(lv[1].parse::().unwrap()); } // NOTE: we set the default values to the desired states so // setting them separately is not required let _handle = chip.get_lines(&offsets)? .request(LineRequestFlags::OUTPUT, &values, "multioutput")?; println!("Output lines being driven... Enter to exit"); let mut buf = String::new(); ::std::io::stdin().read_line(&mut buf)?; Ok(()) } fn main() -> CliResult { let args = Cli::from_args(); do_main(args).or_else(|e| { error!("{:?}", e); Ok(()) }) }