code.octet-stream.net Git - m17rt/blob - m17app/src/serial.rs

   1 use serialport::SerialPort;
   2
   3 use crate::{error::SoundmodemError, soundmodem::Ptt};
   4
   5 /// The pin on the serial port which is driving PTT
   6 pub enum PttPin {
   7     // Ready To Send (RTS)
   8     Rts,
   9     // Data Terminal ready (DTR)
  10     Dtr,
  11 }
  12
  13 pub struct SerialPtt {
  14     port: Box<dyn SerialPort>,
  15     pin: PttPin,
  16 }
  17
  18 impl SerialPtt {
  19     pub fn available_ports() -> impl Iterator<Item = String> {
  20         serialport::available_ports()
  21             .unwrap_or_else(|_| vec![])
  22             .into_iter()
  23             .map(|i| i.port_name)
  24     }
  25
  26     pub fn new(port_name: &str, pin: PttPin) -> Result<Self, SoundmodemError> {
  27         let port = serialport::new(port_name, 9600).open()?;
  28         let mut s = Self { port, pin };
  29         s.ptt_off()?;
  30         Ok(s)
  31     }
  32 }
  33
  34 impl Ptt for SerialPtt {
  35     fn ptt_on(&mut self) -> Result<(), SoundmodemError> {
  36         Ok(match self.pin {
  37             PttPin::Rts => self.port.write_request_to_send(true),
  38             PttPin::Dtr => self.port.write_data_terminal_ready(true),
  39         }?)
  40     }
  41
  42     fn ptt_off(&mut self) -> Result<(), SoundmodemError> {
  43         Ok(match self.pin {
  44             PttPin::Rts => self.port.write_request_to_send(false),
  45             PttPin::Dtr => self.port.write_data_terminal_ready(false),
  46         }?)
  47     }
  48 }