thermostst: Patch hw related settings for rev0_3

src/thermostat/thermostat.rs

@@ -32,11 +32,10 @@ pub struct TecSettings {
 }
 
 impl TecSettings{
-    // FixMe: Rev0_2 is 3.3V max while Rev0_3 is 3.0V max 
     pub const DAC_OUT_V_MAX: ElectricPotential = ElectricPotential {
         dimension: PhantomData,
         units: PhantomData,
-        value: 3.3,
+        value: 3.0,
     };
     pub const TEC_VSEC_BIAS_V: ElectricPotential = ElectricPotential {
         dimension: PhantomData,
@@ -214,9 +213,7 @@ impl Thermostat{
     }
 
     pub fn get_tec_v(&mut self) -> ElectricPotential {
-        // Fixme: Rev0_2 has Analog Input Polarity Reversed
-        //  Remove the -ve sign for Rev0_3
-        -(self.max1968.adc_read(AdcReadTarget::VTec, 16) - TecSettings::TEC_VSEC_BIAS_V) * 4.0
+        (self.max1968.adc_read(AdcReadTarget::VTec, 16) - TecSettings::TEC_VSEC_BIAS_V) * 4.0
     }
 
     /// Calibrates the DAC output to match vref of the MAX driver to reduce zero-current offset of the MAX driver output.