PwmSummary: Don't show max PWM values

Putting the maximum in PwmSummary has little use - the maximum never
changes throughout the runtime of the firmware and can be replaced by
documentation elsewhere.

pytec/pytec/client.py

@@ -16,7 +16,7 @@ class Client:
         pwm_report = self.get_pwm()
         for pwm_channel in pwm_report:
             for limit in ["max_i_neg", "max_i_pos", "max_v"]:
-                if pwm_channel[limit]["value"] == 0.0:
+                if pwm_channel[limit] == 0.0:
                     logging.warning("`{}` limit is set to zero on channel {}".format(limit, pwm_channel["channel"]))
 
     def _read_line(self):
@@ -53,16 +53,16 @@ class Client:
         Example::
             [{'channel': 0,
               'center': 'vref',
-              'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
+              'i_set': -0.02002179650216762,
-              'max_i_neg': {'max': 3.0, 'value': 3.0},
+              'max_i_neg': 2.0,
-              'max_v': {'max': 5.988, 'value': 5.988},
+              'max_v': 3.988,
-              'max_i_pos': {'max': 3.0, 'value': 3.0}},
+              'max_i_pos': 2.0,
              {'channel': 1,
               'center': 'vref',
-              'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
+              'i_set': -0.02002179650216762,
-              'max_i_neg': {'max': 3.0, 'value': 3.0},
+              'max_i_neg': 2.0,
-              'max_v': {'max': 5.988, 'value': 5.988},
+              'max_v': 3.988,
-              'max_i_pos': {'max': 3.0, 'value': 3.0}}
+              'max_i_pos': 2.0}
             ]
         """
         return self._get_conf("pwm")

src/channels.rs

@@ -379,20 +379,20 @@ impl Channels {
         }
     }
 
-    pub fn get_max_v(&mut self, channel: usize) -> (ElectricPotential, ElectricPotential) {
+    pub fn get_max_v(&mut self, channel: usize) -> ElectricPotential {
         let max = 4.0 * ElectricPotential::new::<volt>(3.3);
         let duty = self.get_pwm(channel, PwmPin::MaxV);
-        (duty * max, MAX_TEC_V)
+        duty * max
     }
 
-    pub fn get_max_i_pos(&mut self, channel: usize) -> (ElectricCurrent, ElectricCurrent) {
+    pub fn get_max_i_pos(&mut self, channel: usize) -> ElectricCurrent {
         let duty = self.get_pwm(channel, PwmPin::MaxIPos);
-        (duty * MAX_TEC_I_DUTY_TO_CURRENT_RATE, MAX_TEC_I)
+        duty * MAX_TEC_I_DUTY_TO_CURRENT_RATE
     }
 
-    pub fn get_max_i_neg(&mut self, channel: usize) -> (ElectricCurrent, ElectricCurrent) {
+    pub fn get_max_i_neg(&mut self, channel: usize) -> ElectricCurrent {
         let duty = self.get_pwm(channel, PwmPin::MaxINeg);
-        (duty * MAX_TEC_I_DUTY_TO_CURRENT_RATE, MAX_TEC_I)
+        duty * MAX_TEC_I_DUTY_TO_CURRENT_RATE
     }
 
     // Get current passing through TEC
@@ -508,10 +508,10 @@ impl Channels {
         PwmSummary {
             channel,
             center: CenterPointJson(self.channel_state(channel).center.clone()),
-            i_set: (self.get_i(channel), MAX_TEC_I).into(),
+            i_set: self.get_i(channel),
-            max_v: self.get_max_v(channel).into(),
+            max_v: self.get_max_v(channel),
-            max_i_pos: self.get_max_i_pos(channel).into(),
+            max_i_pos: self.get_max_i_pos(channel),
-            max_i_neg: self.get_max_i_neg(channel).into(),
+            max_i_neg: self.get_max_i_neg(channel),
         }
     }
 
@@ -593,26 +593,14 @@ impl Serialize for CenterPointJson {
     }
 }
 
-#[derive(Serialize)]
-pub struct PwmSummaryField<T: Serialize> {
-    value: T,
-    max: T,
-}
-
-impl<T: Serialize> From<(T, T)> for PwmSummaryField<T> {
-    fn from((value, max): (T, T)) -> Self {
-        PwmSummaryField { value, max }
-    }
-}
-
 #[derive(Serialize)]
 pub struct PwmSummary {
     channel: usize,
     center: CenterPointJson,
-    i_set: PwmSummaryField<ElectricCurrent>,
+    i_set: ElectricCurrent,
-    max_v: PwmSummaryField<ElectricPotential>,
+    max_v: ElectricPotential,
-    max_i_pos: PwmSummaryField<ElectricCurrent>,
+    max_i_pos: ElectricCurrent,
-    max_i_neg: PwmSummaryField<ElectricCurrent>,
+    max_i_neg: ElectricCurrent,
 }
 
 #[derive(Serialize)]

src/config.rs

@@ -80,9 +80,9 @@ struct PwmLimits {
 
 impl PwmLimits {
     pub fn new(channels: &mut Channels, channel: usize) -> Self {
-        let (max_v, _) = channels.get_max_v(channel);
+        let max_v = channels.get_max_v(channel);
-        let (max_i_pos, _) = channels.get_max_i_pos(channel);
+        let max_i_pos = channels.get_max_i_pos(channel);
-        let (max_i_neg, _) = channels.get_max_i_neg(channel);
+        let max_i_neg = channels.get_max_i_neg(channel);
         PwmLimits {
             max_v: max_v.get::<volt>(),
             max_i_pos: max_i_pos.get::<ampere>(),