M-Labs/thermostat
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channels: DRY get_center(), update vref if used

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This commit is contained in:
Astro 2020-09-30 19:14:15 +02:00
parent 4b75c6147d
commit 11f2ebe961
1 changed files with 15 additions and 14 deletions
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29
src/channels.rs
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@ -91,6 +91,19 @@ impl Channels {
})
}
/// calculate the TEC i_set centerpoint
pub fn get_center(&mut self, channel: usize) -> ElectricPotential {
match self.channel_state(channel).center {
CenterPoint::Vref => {
let vref = self.read_vref(channel);
self.channel_state(channel).vref = vref;
vref
},
CenterPoint::Override(center_point) =>
ElectricPotential::new::<volt>(center_point.into()),
}
}
/// i_set DAC
fn get_dac(&mut self, channel: usize) -> (ElectricPotential, ElectricPotential) {
let dac_factor = match channel.into() {
@ -104,13 +117,7 @@ impl Channels {
}
pub fn get_i(&mut self, channel: usize) -> (ElectricCurrent, ElectricCurrent) {
let state = self.channel_state(channel);
let center_point = match state.center {
CenterPoint::Vref =>
state.vref,
CenterPoint::Override(center_point) =>
ElectricPotential::new::<volt>(center_point.into()),
};
let center_point = self.get_center(channel);
let r_sense = ElectricalResistance::new::<ohm>(R_SENSE);
let (voltage, max) = self.get_dac(channel);
let i_tec = (voltage - center_point) / (10.0 * r_sense);
@ -138,13 +145,7 @@ impl Channels {
}
pub fn set_i(&mut self, channel: usize, i_tec: ElectricCurrent) -> (ElectricCurrent, ElectricCurrent) {
let state = self.channel_state(channel);
let center_point = match state.center {
CenterPoint::Vref =>
state.vref,
CenterPoint::Override(center_point) =>
ElectricPotential::new::<volt>(center_point.into()),
};
let center_point = self.get_center(channel);
let r_sense = ElectricalResistance::new::<ohm>(R_SENSE);
let voltage = i_tec * 10.0 * r_sense + center_point;
let (voltage, max) = self.set_dac(channel, voltage);