| // Copyright (c) 2018 The rust-gpio-cdev Project Developers. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, 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<String>, |
| } |
| |
| // 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::<u32>().unwrap()); |
| values.push(lv[1].parse::<u8>().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(()) |
| }) |
| } |