mcp3424/cfg/
mod.rs

1use core::ops::Not;
2
3pub use crate::cfg::channel::Channel;
4pub use crate::cfg::gain::Gain;
5pub use crate::cfg::mode::Mode;
6pub use crate::cfg::resolution::Resolution;
7use crate::Configuration;
8
9mod gain;
10mod channel;
11mod mode;
12mod resolution;
13
14#[derive(Copy, Clone)]
15#[cfg_attr(any(feature = "fmt", test), derive(Debug))]
16#[cfg_attr(feature = "defmt", derive(defmt::Format))]
17pub struct Cfg {
18    pub ready: bool,
19    pub channel: Channel,
20    pub mode: Mode,
21    pub resolution: Resolution,
22    pub gain: Gain,
23}
24
25impl Cfg {
26
27    pub fn set_values_from_configuration(&mut self, other: &Configuration) {
28        self.channel = other.channel;
29        self.gain = other.gain;
30        self.resolution = other.resolution;
31    }
32
33    pub fn as_byte(&self) -> u8 {
34        let mut result = 0_u8;
35        result |= self.ready.not() as u8;
36        result <<= 2;
37        result |= self.channel.mask();
38        result <<= 1;
39        result |= self.mode.mask();
40        result <<= 2;
41        result |= self.resolution.mask();
42        result <<= 2;
43        result |= self.gain.mask();
44        result
45    }
46}
47
48impl From<u8> for Cfg {
49
50    fn from(value: u8) -> Self {
51        let ready = {
52            value >> 7 == 0
53        };
54        let channel = {
55            match (value >> 5) & 0b11 {
56                0b00 => Channel::Channel1,
57                0b01 => Channel::Channel2,
58                0b10 => Channel::Channel3,
59                0b11 => Channel::Channel4,
60                _ => unreachable!()
61            }
62        };
63        let mode = {
64            if (value >> 4) & 1 == 1 {
65                Mode::Continuous
66            }
67            else {
68                Mode::OneShot
69            }
70        };
71        let resolution = {
72            match (value >> 2) & 0b11 {
73                0b00 => Resolution::TwelveBits,
74                0b01 => Resolution::FourteenBits,
75                0b10 => Resolution::SixteenBits,
76                0b11 => Resolution::EighteenBits,
77                _ => unreachable!()
78            }
79        };
80        let gain = {
81            match value & 0b11 {
82                0b00 => Gain::X1,
83                0b01 => Gain::X2,
84                0b10 => Gain::X4,
85                0b11 => Gain::X8,
86                _ => unreachable!()
87            }
88        };
89        Self {
90            ready,
91            channel,
92            mode,
93            resolution,
94            gain
95        }
96    }
97}
98
99impl Default for Cfg {
100    fn default() -> Self {
101        Self {
102            ready: true,
103            channel: Channel::default(),
104            mode: Mode::default(),
105            resolution: Resolution::default(),
106            gain: Gain::default(),
107        }
108    }
109}
mcp3424/cfg/mod.rs

mcp3424/cfg/
mod.rs
