1 // Copyright 2025 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #![no_std] 15 16 use embedded_io::{ErrorType, Write}; 17 use pw_status::Result; 18 19 pub struct Console {} 20 21 unsafe extern "Rust" { console_backend_write(buf: &[u8]) -> Result<usize>22 fn console_backend_write(buf: &[u8]) -> Result<usize>; console_backend_flush() -> Result<()>23 fn console_backend_flush() -> Result<()>; 24 } 25 26 impl ErrorType for Console { 27 type Error = pw_status::Error; 28 } 29 30 impl Default for Console { default() -> Self31 fn default() -> Self { 32 Self::new() 33 } 34 } 35 36 impl Console { 37 #[inline] new() -> Self38 pub const fn new() -> Self { 39 Self {} 40 } 41 } 42 43 impl Write for Console { 44 #[inline] write(&mut self, buf: &[u8]) -> Result<usize>45 fn write(&mut self, buf: &[u8]) -> Result<usize> { 46 unsafe { console_backend_write(buf) } 47 } 48 49 #[inline] flush(&mut self) -> Result<()>50 fn flush(&mut self) -> Result<()> { 51 unsafe { console_backend_flush() } 52 } 53 } 54