bluenrg 0.1.0

Interface to ST Micro BlueNRG Bluetooth radios
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
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

#![allow(dead_code)]

extern crate bluenrg;
extern crate embedded_hal as hal;
extern crate nb;

use bluenrg::{ActiveBlueNRG, BlueNRG};
use std::cmp;

static mut DUMMY_RX_BUFFER: [u8; 8] = [0; 8];

pub struct Fixture<'sink, 'buf> {
    pub sink: &'sink mut RecordingSink,
    bnrg: BlueNRG<'buf, RecordingSink, DummyPin, DummyPin, DummyPin, NeverError>,
}

impl<'sink, 'buf> Fixture<'sink, 'buf> {
    pub fn new(sink: &'sink mut RecordingSink) -> Fixture<'sink, 'buf> {
        Fixture {
            sink,
            bnrg: unsafe { BlueNRG::new(&mut DUMMY_RX_BUFFER, DummyPin, DummyPin, DummyPin) },
        }
    }

    pub fn act<T, F>(&mut self, body: F) -> T
    where
        F: FnOnce(&mut ActiveBlueNRG<RecordingSink, DummyPin, DummyPin, DummyPin, NeverError>) -> T,
    {
        self.bnrg.with_spi(&mut self.sink, body)
    }

    pub fn wrote_header(&self) -> bool {
        self.sink.written_header == [0x0A, 0x00, 0x00, 0x00, 0x00]
    }

    pub fn wrote(&self, bytes: &[u8]) -> bool {
        assert_eq!(self.sink.written_header, [0x0A, 0x00, 0x00, 0x00, 0x00]);
        // assert_eq!(self.sink.written_data.len(), bytes.len());
        for section in 0..=bytes.len() / 16 {
            let actual_first = cmp::min(section * 16, self.sink.written_data.len());
            let actual_last = cmp::min((1 + section) * 16, self.sink.written_data.len());
            let expected_first = cmp::min(section * 16, bytes.len());
            let expected_last = cmp::min((section + 1) * 16, bytes.len());
            assert_eq!(
                self.sink.written_data[actual_first..actual_last],
                bytes[expected_first..expected_last]
            );
        }

        true
    }
}

pub struct RecordingSink {
    written_header: Vec<u8>,
    pub written_data: Vec<u8>,
    canned_reply: Vec<u8>,
}

impl RecordingSink {
    pub fn new() -> RecordingSink {
        RecordingSink {
            written_header: Vec::new(),
            written_data: Vec::new(),

            // The reply is returned in reverse order
            canned_reply: vec![0x00, 0x00, 0xFF, 0xFF, 0x02],
        }
    }

    pub fn wrote_header(&self) -> bool {
        self.written_header == [0x0A, 0x00, 0x00, 0x00, 0x00]
    }

    pub fn wrote(&self, bytes: &[u8]) -> bool {
        assert_eq!(self.written_header, [0x0A, 0x00, 0x00, 0x00, 0x00]);
        // assert_eq!(self.written_data.len(), bytes.len());
        for section in 0..=bytes.len() / 16 {
            let actual_first = cmp::min(section * 16, self.written_data.len());
            let actual_last = cmp::min((1 + section) * 16, self.written_data.len());
            let expected_first = cmp::min(section * 16, bytes.len());
            let expected_last = cmp::min((section + 1) * 16, bytes.len());
            assert_eq!(
                self.written_data[actual_first..actual_last],
                bytes[expected_first..expected_last]
            );
        }

        true
    }
}

impl hal::spi::FullDuplex<u8> for RecordingSink {
    type Error = ();

    fn read(&mut self) -> nb::Result<u8, Self::Error> {
        Ok(self.canned_reply.pop().unwrap_or(0))
    }

    fn send(&mut self, byte: u8) -> nb::Result<(), Self::Error> {
        if !self.canned_reply.is_empty() {
            self.written_header.push(byte);
        } else {
            self.written_data.push(byte);
        }
        Ok(())
    }
}

impl hal::blocking::spi::transfer::Default<u8> for RecordingSink {}

impl hal::blocking::spi::write::Default<u8> for RecordingSink {}

pub struct DummyPin;

#[derive(Debug, PartialEq)]
pub enum NeverError {}

impl hal::digital::v2::OutputPin for DummyPin {
    type Error = NeverError;

    fn set_low(&mut self) -> Result<(), Self::Error> {
        Ok(())
    }

    fn set_high(&mut self) -> Result<(), Self::Error> {
        Ok(())
    }
}

impl hal::digital::v2::StatefulOutputPin for DummyPin {
    fn is_set_high(&self) -> Result<bool, Self::Error> {
        Ok(true) // Needs to indicate data ready
    }

    fn is_set_low(&self) -> Result<bool, Self::Error> {
        Ok(false)
    }
}

impl hal::digital::v2::InputPin for DummyPin {
    type Error = NeverError;

    fn is_high(&self) -> Result<bool, Self::Error> {
        Ok(true) // Needs to indicate data ready
    }

    fn is_low(&self) -> Result<bool, Self::Error> {
        Ok(false)
    }
}

pub struct DummySpi;