fennec-modbus 0.88.0

Modular Modbus client implementation
Documentation 
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

use core::fmt::Debug;

use binrw::{BinRead, BinWrite};

#[must_use]
#[derive(Copy, Clone, Debug, BinWrite)]
#[bw(big)]
pub struct Args;

#[must_use]
#[derive(Copy, Clone, derive_more::Debug, BinRead)]
#[br(big)]
pub struct Output {
    /// Status of the eight Exception Status outputs.
    ///
    /// The contents of the eight Exception Status outputs are device specific.
    pub output: u8,
}

#[cfg(test)]
mod tests {
    use alloc::vec;

    use binrw::{BinRead, io::Cursor};

    use super::*;

    #[test]
    fn request_example_ok() {
        const EXPECTED: &[u8] = &[];
        let mut output = Cursor::new(vec![]);
        Args.write(&mut output).unwrap();
        assert_eq!(output.into_inner(), EXPECTED);
    }

    #[test]
    fn response_example_ok() {
        const RESPONSE: &[u8] = &[
            0x6D, // output
        ];
        let response = Output::read(&mut Cursor::new(RESPONSE)).unwrap();
        assert_eq!(response.output, 0x6D);
    }
}