65 lines
1.3 KiB
Rust
65 lines
1.3 KiB
Rust
use embedded_hal;
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#[derive(Copy, Clone, Debug)]
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pub enum Gain {
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G1 = 0b00,
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G2 = 0b01,
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G5 = 0b10,
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G10 = 0b11
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}
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pub struct ProgrammableGainAmplifier<A0, A1> {
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a0: A0,
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a1: A1
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}
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impl<A0, A1> ProgrammableGainAmplifier<A0, A1>
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where
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A0: embedded_hal::digital::v2::StatefulOutputPin,
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A0::Error: core::fmt::Debug,
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A1: embedded_hal::digital::v2::StatefulOutputPin,
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A1::Error: core::fmt::Debug,
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{
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pub fn new(a0: A0, a1: A1) -> Self
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{
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let mut afe = Self { a0: a0, a1: a1};
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afe.set_gain(Gain::G1);
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afe
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}
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pub fn set_gain(&mut self, gain: Gain) {
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if (gain as u8 & 0b01) != 0 {
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self.a0.set_high().unwrap();
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} else {
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self.a0.set_low().unwrap();
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}
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if (gain as u8 & 0b10) != 0 {
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self.a1.set_high().unwrap()
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} else {
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self.a1.set_low().unwrap();
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}
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}
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pub fn get_gain(&self) -> Gain {
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let lsb_set = self.a0.is_set_high().unwrap();
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let msb_set = self.a1.is_set_high().unwrap();
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if msb_set {
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if lsb_set {
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Gain::G10
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} else {
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Gain::G5
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}
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} else {
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if lsb_set {
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Gain::G2
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} else {
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Gain::G1
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}
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}
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}
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}
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