wm8731 0.1.0

A simple HAL for the WM8731 audio codec
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

//! Configuration for sampling

use crate::bitmask::BitMask;
use crate::SamplingRate;

pub struct UsbNormal<'a> {
    index: u16,
    bitmask: BitMask<'a>,
}

impl<'a> UsbNormal<'a> {
    pub fn new(index: u16, data: &'a mut u16) -> Self {
        let bitmask = BitMask::new(data);

        UsbNormal { index, bitmask }
    }

    pub fn usb(&mut self) {
        self.bitmask.set(self.index);
    }

    pub fn normal(&mut self) {
        self.bitmask.unset(self.index);
    }
}

pub struct ClockDivider<'a> {
    index: u16,
    bitmask: BitMask<'a>,
}

impl<'a> ClockDivider<'a> {
    pub fn new(index: u16, data: &'a mut u16) -> Self {
        let bitmask = BitMask::new(data);

        ClockDivider { index, bitmask }
    }

    pub fn divided_by_two(&mut self) {
        self.bitmask.set(self.index);
    }

    pub fn normal(&mut self) {
        self.bitmask.unset(self.index);
    }
}

pub struct Oversampling<'a> {
    index: u16,
    bitmask: BitMask<'a>,
}

impl<'a> Oversampling<'a> {
    pub fn new(index: u16, data: &'a mut u16) -> Self {
        let bitmask = BitMask::new(data);

        Oversampling { index, bitmask }
    }

    pub fn usb_272(&mut self) {
        self.bitmask.set(self.index);
    }

    pub fn usb_250(&mut self) {
        self.bitmask.unset(self.index);
    }

    pub fn normal_384(&mut self) {
        self.bitmask.set(self.index);
    }

    pub fn normal_256(&mut self) {
        self.bitmask.unset(self.index);
    }
}

#[derive(Debug, Copy, Clone)]
pub struct Sampling {
    pub(crate) data: u16,
}

impl Sampling {
    pub fn new() -> Self {
        Sampling {
            data: 0b0_0000_0000,
        }
    }

    /// USB/normal mode select
    pub fn usb_normal(&mut self) -> UsbNormal {
        UsbNormal::new(0, &mut self.data)
    }

    /// Base over-sampling rate
    pub fn base_oversampling_rate(&mut self) -> Oversampling {
        Oversampling::new(1, &mut self.data)
    }

    /// ADC and DAC sample rate
    pub fn sample_rate(&mut self) -> SamplingRate {
        SamplingRate::new(2, &mut self.data)
    }

    /// Core clock divider select
    pub fn core_clock_divider_select(&mut self) -> ClockDivider {
        ClockDivider::new(6, &mut self.data)
    }

    /// CLKOUT divider select
    pub fn clock_out_divider_select(&mut self) -> ClockDivider {
        ClockDivider::new(7, &mut self.data)
    }
}