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// Copyright (c) 2017-2019 Rene van der Meer // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. use embedded_hal::blocking::serial::write::Default; use embedded_hal::serial::{Read, Write}; use nb; use super::{Error, Queue, Uart}; impl Read<u8> for Uart { type Error = Error; fn read(&mut self) -> nb::Result<u8, Self::Error> { let mut buffer = [0u8; 1]; if Uart::read(self, &mut buffer)? == 0 { Err(nb::Error::WouldBlock) } else { Ok(buffer[0]) } } } impl Write<u8> for Uart { type Error = Error; fn write(&mut self, word: u8) -> nb::Result<(), Self::Error> { if Uart::write(self, &[word])? == 0 { Err(nb::Error::WouldBlock) } else { Ok(()) } } fn flush(&mut self) -> nb::Result<(), Self::Error> { Uart::flush(self, Queue::Output)?; Ok(()) } } impl Default<u8> for Uart {}