1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164

//! # rttrust
//!
//! Rust wrapper for [rt-thread](https://github.com/RT-Thread/rt-thread/tree/master)

//! ### TODO
//! 1. communication
//!     1. rt_mailbox
//!     1. rt_messagequeue
//!     1. rt_signal
//!

#![cfg_attr(not(test), no_std)]
#![feature(clamp)]
#![feature(alloc_error_handler)]
#![feature(negative_impls)]
#![cfg_attr(test, feature(proc_macro_hygiene))]

#[cfg(test)]
#[macro_use]
extern crate std;

#[cfg(feature = "alloc")]
#[cfg_attr(feature = "alloc", macro_use)]
extern crate alloc;

#[macro_use]
extern crate bitflags;

#[macro_use]
extern crate cfg_if;

#[cfg(test)]
extern crate mockall;

#[cfg(all(not(test), feature = "alloc"))]
pub mod allocator;
#[cfg(feature = "alloc")]
pub mod callback;
pub mod cmd;
pub mod cstr;
pub mod device;
pub mod ffi;
pub mod fmt;
pub mod ipc;
pub mod object;
pub mod sync;
pub mod thread;
pub mod timer;

#[cfg(test)]
pub(crate) mod mock;

#[cfg(feature = "alloc")]
pub use alloc::{boxed::Box, rc::Rc, vec::Vec};

#[cfg(feature = "io")]
pub mod io;

#[cfg(all(not(test), not(feature = "custom-panic")))]
use core::{fmt::Write, panic::PanicInfo};
use ffi::rt_err_t;

#[macro_export]
macro_rules! println {
    ($fmt:expr) => (print!(concat!($fmt, "\n")));
    ($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
}

#[macro_export]
macro_rules! print {
    ($($arg:tt)*) => ({
        use core::fmt::Write;
        let mut writer = $crate::fmt::Console {};
        writer.write_fmt(format_args!($($arg)*)).unwrap();
    });
}

#[cfg(all(not(test), not(feature = "custom-panic")))]
#[cfg_attr(not(test), panic_handler)]
fn panic(panic: &PanicInfo<'_>) -> ! {
    let mut writer = fmt::Console {};
    writeln!(writer, "{}", panic).ok();
    loop {}
}

#[cfg(all(not(test), feature = "alloc"))]
#[cfg_attr(not(test), alloc_error_handler)]
fn alloc_error_handler(layout: alloc::alloc::Layout) -> ! {
    panic!("allocation error: {:?}", layout)
}

/// RT-Thread error code definitions
#[derive(Debug)]
pub enum RtError {
    /// A generic error happens
    Error,
    /// Timed out
    TimeOut,
    /// The resource is full
    Full,
    /// The resource is empty
    Empty,
    /// No memory
    NoMem,
    /// No system
    NoSys,
    /// Busy
    Busy,
    /// IO error
    IO,
    /// Interrupted system call
    Intr,
    /// Invalid argument
    Inval,
    /// Unknown error
    Unknown,
}

pub type Result<R> = core::result::Result<R, RtError>;

impl RtError {
    pub fn from_code(err: rt_err_t) -> Option<Self> {
        let err = err.abs() as u32;
        match err {
            ffi::RT_EOK => None,
            ffi::RT_ETIMEOUT => Some(RtError::TimeOut),
            ffi::RT_EFULL => Some(RtError::Full),
            ffi::RT_EEMPTY => Some(RtError::Empty),
            ffi::RT_ENOMEM => Some(RtError::NoMem),
            ffi::RT_ENOSYS => Some(RtError::NoSys),
            ffi::RT_EBUSY => Some(RtError::Busy),
            ffi::RT_EIO => Some(RtError::IO),
            ffi::RT_EINTR => Some(RtError::Intr),
            ffi::RT_EINVAL => Some(RtError::Inval),
            _ => Some(RtError::Unknown),
        }
    }
    pub fn from_code_none<R>(err: rt_err_t, ok: R) -> Result<R> {
        Self::from_code(err).map_or(Ok(ok), |e| Err(e))
    }
    pub fn from_code_none_then<F, R>(err: rt_err_t, ok: F) -> Result<R>
    where
        F: FnOnce() -> R,
    {
        Self::from_code(err).map_or_else(|| Ok(ok()), |e| Err(e))
    }

    pub fn to_code(&self) -> rt_err_t {
        let code = match self {
            RtError::Error => ffi::RT_EOK,
            RtError::TimeOut => ffi::RT_ETIMEOUT,
            RtError::Full => ffi::RT_EFULL,
            RtError::Empty => ffi::RT_EEMPTY,
            RtError::NoMem => ffi::RT_ENOMEM,
            RtError::NoSys => ffi::RT_ENOSYS,
            RtError::Busy => ffi::RT_EBUSY,
            RtError::IO => ffi::RT_EIO,
            RtError::Intr => ffi::RT_EINTR,
            RtError::Inval => ffi::RT_EINVAL,
            RtError::Unknown => ffi::RT_EINVAL + 1,
        };
        -(code as rt_err_t)
    }
}