pytelem major work

cmd/gotelem/cli/server.go

@@ -274,16 +274,21 @@ func (x *xBeeService) Start(cCtx *cli.Context, deps svcDeps) (err error) {
 	}
 	logger.Info("connected to local xbee", "addr", x.session.LocalAddr())
 
-	writeJSON := json.NewEncoder(x.session)
+	// these are the ways we send/recieve data. we could swap for binary format
-	xbeePackets := make(chan skylab.BusEvent)
+	// TODO: buffering and/or binary encoding instead of json which is horribly ineffective.
+	xbeeTxer := json.NewEncoder(x.session)
+	xbeeRxer := json.NewDecoder(x.session)
+
+	// xbeePackets := make(chan skylab.BusEvent)
+	// background task to read json packets off of the xbee and send them to the
 	go func() {
-		decoder := json.NewDecoder(x.session)
 		for {
 			var p skylab.BusEvent
-			err := decoder.Decode(&p)
+			err := xbeeRxer.Decode(&p)
 			if err != nil {
 				logger.Error("failed to decode xbee packet")
 			}
+			broker.Publish("xbee", p)
 		}
 	}()
 	for {
@@ -293,7 +298,7 @@ func (x *xBeeService) Start(cCtx *cli.Context, deps svcDeps) (err error) {
 			return
 		case msg := <-rxCh:
 			logger.Info("got msg", "msg", msg)
-			writeJSON.Encode(msg)
+			xbeeTxer.Encode(msg)
 			if err != nil {
 				logger.Warn("error writing to xbee", "err", err)
 			}
@@ -321,6 +326,7 @@ func (h *httpService) Start(cCtx *cli.Context, deps svcDeps) (err error) {
 
 	r := gotelem.TelemRouter(logger, broker, db)
 
+	/// TODO: use custom port if specified
 	http.ListenAndServe(":8080", r)
 	return
 }

frame.go

@@ -35,6 +35,7 @@ const (
 // CanFilter is a basic filter for masking out data. It has an Inverted flag
 // which indicates opposite behavior (reject all packets that match Id and Mask).
 // The filter matches when (packet.Id & filter.Mask) == filter.Id
+// TODO: is this needed anymore since we are using firmware based version instead?
 type CanFilter struct {
 	Id       uint32
 	Mask     uint32

http.go

@@ -101,7 +101,9 @@ func apiV1(broker *Broker, db *db.TelemDb) chi.Router {
 
 	})
 
-	r.Get("/stats", func(w http.ResponseWriter, r *http.Request) {}) // v1 api stats (calls, clients, xbee connected, meta health ok)
+	r.Get("/stats", func(w http.ResponseWriter, r *http.Request) {
+
+	}) // v1 api stats (calls, clients, xbee connected, meta health ok)
 
 	return r
 }

internal/middleware/slogger.go

@@ -40,7 +40,10 @@ func Slogger(sl *slog.Logger) func(next http.Handler) http.Handler {
 			}()
 
 			// embed the logger and the attrs for later items in the chain.
-			r = r.WithContext(context.WithValue(r.Context(), SloggerAttrsKey, attrs))
+			ctx := context.WithValue(r.Context(), SloggerAttrsKey, attrs)
+			ctx = context.WithValue(ctx, SloggerLogKey, logger)
+			// push it to the request and serve the next handler
+			r = r.WithContext(ctx)
 			next.ServeHTTP(ww, r)
 		}
 
@@ -64,3 +67,5 @@ func AddSlogAttr(r *http.Request, attr slog.Attr) {
 	attrs = append(attrs, attr)
 
 }
+
+// TODO: write rest of functions

py/.idea/jupyter-settings.xml

@@ -1,20 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="JupyterPersistentConnectionParameters">
-    <option name="knownRemoteServers">
-      <list>
-        <JupyterConnectionParameters>
-          <option name="authType" value="notebook" />
-          <option name="token" value="5a7fb936e2f1eafcdefbb7fa3ea339000213214ae7e35195" />
-          <option name="urlString" value="http://127.0.0.1:8888" />
-          <authParams2>
-            <map>
-              <entry key="token" value="5a7fb936e2f1eafcdefbb7fa3ea339000213214ae7e35195" />
-            </map>
-          </authParams2>
-        </JupyterConnectionParameters>
-      </list>
-    </option>
     <option name="moduleParameters">
       <map>
         <entry key="$PROJECT_DIR$/.idea/py.iml">

py/.idea/misc.xml

@@ -1,4 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="Black">
+    <option name="executionMode" value="BINARY" />
+    <option name="pathToExecutable" value="/usr/bin/black" />
+  </component>
   <component name="ProjectRootManager" version="2" project-jdk-name="Poetry (py)" project-jdk-type="Python SDK" />
+  <component name="PyPackaging">
+    <option name="earlyReleasesAsUpgrades" value="true" />
+  </component>
 </project>

py/.idea/py.iml

@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Poetry (py)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TemplatesService">

py/notebooks/hacking.py

@@ -44,7 +44,7 @@ def rip_and_tear(fname: Path, features: list[PlotFeature]):
 
             for path in data[j['name']].keys():
                 d = glom.glom(j['data'], path)
-                ts = j['ts']
+                ts = j['ts'] - 1688756556040
                 data[j['name']][path].append([ts, d])
     # TODO: numpy the last list???
     return data
@@ -56,7 +56,7 @@ if __name__ == "__main__":
         PlotFeature("wsr_phase_current", ["phase_b_current"]),
         PlotFeature("wsr_motor_current_vector", ["iq"]),
         PlotFeature("wsr_motor_voltage_vector", ["vq"]),
-        PlotFeature("wsr_bus_measurement", ["bus_current"])
+        PlotFeature("wsr_velocity", ["motor_velocity"])
     ]
     logs_path = Path("../../logs/")
     logfile = logs_path / "RETIME_7-2-hillstart.txt"

py/pyproject.toml

@@ -13,7 +13,7 @@ imgui-bundle = "^0.8.5"
 numpy = "^1.24.3"
 aiohttp = "^3.8.4"
 pyside6 = "^6.5.0"
-pydantic = "^1.10.9"
+pydantic = "^2"
 pyyaml = "^6.0"
 jinja2 = "^3.1.2"
 pyqtgraph = "^0.13.3"

py/pytelem/backend.py

@@ -1,6 +1,14 @@
+from functools import cached_property
+
 import aiohttp
 import orjson
 import threading
+from typing import Dict
+
+from PySide6.QtCore import QObject, Signal, Slot
+
+from pytelem.skylab import SkylabFile
+
 
 # connect to websocket - create thread that handles JSON events
 class TelemetryServer(QObject):
@@ -9,11 +17,23 @@ class TelemetryServer(QObject):
     conn_url: str
     "Something like http://<some_ip>:8082"
 
-    callbacks: Dict[str, Signal]
-
     def __init__(self, url: str, parent=None):
         super().__init__(parent)
         self.conn_url = url
 
+    NewPacket = Signal(object)
+    """Signal that is emitted when a new packet is received in realtime. Contains the packet itself"""
+
+    @cached_property
+    def schema(self) -> SkylabFile:
+        """Gets the Packet Schema from the server"""
+        pass
+
+    @Slot()
+    def connect(self):
+        """Attempt to connect to server"""
+
+    def query(self, queryparams):
+        """Query the historical data and store the result in the datastore"""
 
 

py/pytelem/bms.py

@@ -56,7 +56,7 @@ class BMSOverview(QWidget):
 
     def __init__(self, parent=None) -> None:
         super().__init__(parent)
-        self.setMaximumWidth
+        # self.setMaximumWidth()
         layout = QGridLayout()
         layout.setRowStretch(0, 80)
         layout.setRowStretch(1, 20)

py/pytelem/gui.py

@@ -1,56 +1,83 @@
+import random
 import sys
 import logging
 
 import pyqtgraph.parametertree
 from PySide6 import QtWidgets, QtCore
-from PySide6.QtCore import QDir, Qt, QObject
+from PySide6.QtCore import QDir, Qt, QObject, Slot, Signal, QTimer
+from PySide6.QtGui import QAction
 from PySide6.QtWidgets import (
     QApplication,
     QWidget,
     QMainWindow,
     QTreeView,
-    QDockWidget,
+    QDockWidget, QToolBar, QPlainTextEdit,
 )
-
+from gui_log import QLogHandler
+from pytelem.widgets.smart_display import SmartDisplay
 from bms import BMSOverview
 
-class QtLogger(logging.Handler, QObject):
-    appendLog = QtCore.Signal(str)
 
-    def __init__(self, parent):
+class DataStore(QObject):
-        super().__init__()
-        QtCore.QObject.__init__(self)
-        self.widget = QtWidgets.QPlainTextEdit(parent)
-        self.widget.setReadOnly(True)
-        self.appendLog.connect(self.widget.appendPlainText)
-    
-    def emit(self, record):
-        msg = self.format(record)
-        self.appendLog.emit(msg)
-
-
-class DataStore:
     """Stores all packets and timestamps for display and logging.
     Queries the upstreams for the packets as they come in as well as historical"""
 
     def __init__(self, remote):
-        pass
+        super().__init__()
+
 
 class MainApp(QMainWindow):
+    new_data = Signal(float)
+
     def __init__(self):
         super().__init__()
-        self.setWindowTitle("Hey there")
+        self.setWindowTitle("pyview")
         layout = QtWidgets.QVBoxLayout()
 
+        mb = self.menuBar()
+        self.WindowMenu = mb.addMenu("Windows")
+
         bms = BMSOverview()
-        dw = QDockWidget('bms', self)
+        packet_tree = QDockWidget('Packet Tree', self)
-        self.addDockWidget(Qt.DockWidgetArea.LeftDockWidgetArea, dw)
+        self.addDockWidget(Qt.DockWidgetArea.LeftDockWidgetArea, packet_tree)
-        dw.setWidget(PacketTree())
+        packet_tree.setWidget(PacketTreeView())
-        self.setCentralWidget(bms)
+        packet_tree.hide()
+        self.ShowPacketTree = packet_tree.toggleViewAction()
+        self.WindowMenu.addAction(self.ShowPacketTree)
+
+        log_dock = QDockWidget('Application Log', self)
+        self.qlogger = QLogHandler()
+        self.log_box = QPlainTextEdit()
+        self.log_box.setReadOnly(True)
+        log_dock.setWidget(self.log_box)
+        self.qlogger.bridge.log.connect(self.log_box.appendPlainText)
+        self.addDockWidget(Qt.DockWidgetArea.BottomDockWidgetArea, log_dock)
+
+        self.logger = logging.Logger("Main")
+        self.logger.addHandler(self.qlogger)
+        self.logger.info("hi there!")
+        self.ShowLog = log_dock.toggleViewAction()
+        self.ShowLog.setShortcut("CTRL+L")
+        self.WindowMenu.addAction(self.ShowLog)
+        self.display = SmartDisplay(self, "test")
+        self.new_data.connect(self.display.update_value)
+        # start a qtimer to generate random data.
+        self.timer = QTimer(parent=self)
+        self.timer.timeout.connect(self.__random_data)
+        # self.__random_data.connect(self.timer.timeout)
+        self.timer.start(100)
+
+        self.setCentralWidget(self.display)
+
+    @Slot()
+    def __random_data(self):
+        # emit random data to the new_data
+        yay = random.normalvariate(10, 1)
+        self.logger.info(yay)
+        self.new_data.emit(yay)
 
 
-
+class PacketTreeView(QWidget):
-class PacketTree(QWidget):
     """PacketView is a widget that shows a tree of packets as well as properties on them when selected."""
 
     def __init__(self, parent: QtWidgets.QWidget | None = None):
@@ -69,6 +96,10 @@ class PacketTree(QWidget):
         self.setLayout(layout)
 
 
+class SolverView(QWidget):
+    """Main Solver Widget/Window"""
+
+
 if __name__ == "__main__":
     app = QApplication(sys.argv)
     main_window = MainApp()

py/pytelem/gui_log.py

@@ -0,0 +1,20 @@
+import sys
+import logging
+
+from PySide6.QtCore import QObject, Slot, Signal
+from PySide6.QtWidgets import QPlainTextEdit
+
+
+class Bridge(QObject):
+    log = Signal(str)
+
+
+class QLogHandler(logging.Handler):
+    bridge = Bridge()
+
+    def __init__(self):
+        super().__init__()
+
+    def emit(self, record):
+        msg = self.format(record)
+        self.bridge.log.emit(msg)

py/pytelem/optimus.py

@@ -24,14 +24,14 @@ from numba import jit
 
 
 def fsolve_discrete():
-    ...
+    """Forward compute a route segment."""
 
 
 def dist_to_pos(dist: float):
-    "convert a distance along the race path to a position in 3d space"
+    """convert a distance along the race path to a position in 3d space"""
 
 
-### All units are BASE SI (no prefix except for kilogram)
+# All units are BASE SI (no prefix except for kilogram)
 ATM_MOLAR_MASS = 0.0289644  # kg/mol
 STANDARD_TEMP = 288.15  # K
 STANDARD_PRES = 101325.0  # Pa
@@ -583,18 +583,18 @@ def solar_position(timestamp, latitude, longitude, elevation):
 
     v = v_0 + d_psi * np.cos(np.deg2rad(epsilon))
 
-    alpha = np.arctan2(np.sin(np.radians(sun_longitude)) *
+    alpha = np.arctan2(np.sin(np.deg2rad(sun_longitude)) *
-                       np.cos(np.radians(epsilon)) -
+                       np.cos(np.deg2rad(epsilon)) -
-                       np.tan(np.radians(beta)) *
+                       np.tan(np.deg2rad(beta)) *
-                       np.sin(np.radians(epsilon)),
+                       np.sin(np.deg2rad(epsilon)),
-                       np.cos(np.radians(sun_longitude)))
+                       np.cos(np.deg2rad(sun_longitude)))
     alpha_deg = np.rad2deg(alpha) % 360
     delta = np.arcsin(
-        np.sin(np.radians(beta)) *
+        np.sin(np.deg2rad(beta)) *
-        np.cos(np.radians(epsilon)) +
+        np.cos(np.deg2rad(epsilon)) +
-        np.cos(np.radians(beta)) *
+        np.cos(np.deg2rad(beta)) *
-        np.sin(np.radians(epsilon)) *
+        np.sin(np.deg2rad(epsilon)) *
-        np.cos(np.radians(sun_longitude))
+        np.cos(np.deg2rad(sun_longitude))
     )
     delta_deg = np.rad2deg(delta) % 360
 
@@ -612,4 +612,5 @@ def solar_position(timestamp, latitude, longitude, elevation):
     alpha_prime = alpha_deg + d_alpha
     delta_prime = np.arctan2((np.sin(delta) - y * np.sin(np.radians(xi_deg))) * np.cos(np.radians(d_alpha)),
                              np.cos(delta) - x * np.sin(np.radians(xi_deg)) * np.cos(np.radians(h)))
-    topo_local_hour_angle_deg = h - d_alpha
+    h_prime = h - d_alpha
+    e_0 = np.arcsin(np.sin(latitude) * np.sin(delta) + np.cos(latitude) * np.cos(delta_prime))

py/pytelem/pytelem.py

@@ -1,114 +0,0 @@
-import time
-import numpy as np
-
-from imgui_bundle import implot, imgui_knobs, imgui, immapp, hello_imgui
-import aiohttp
-import orjson
-
-# Fill x and y whose plot is a heart
-vals = np.arange(0, np.pi * 2, 0.01)
-x = np.power(np.sin(vals), 3) * 16
-y = 13 * np.cos(vals) - 5 * np.cos(2 * vals) - 2 * np.cos(3 * vals) - np.cos(4 * vals)
-# Heart pulse rate and time tracking
-phase = 0
-t0 = time.time() + 0.2
-heart_pulse_rate = 80
-
-
-class PacketState:
-    """PacketState is the state representation for a packet. It contains metadata about the packet
-    as well as a description of the packet fields. Also contains a buffer.
-    """
-
-    def render_tree(self):
-        """Render the Tree view entry for the packet. Only called if the packet is shown."""
-        pass
-
-    def render_graphs(self):
-        pass
-
-    def __init__(self, name: str, description: str | None = None):
-        self.name = name
-        self.description = description
-
-        # take the data fragment and create internal data representing it.
-
-
-boards = {
-    "bms": {
-        "bms_measurement": {
-            "description": "Voltages for main battery and aux pack",
-            "id": 0x10,
-            "data": {
-                "battery_voltage": 127.34,
-                "aux_voltage": 23.456,
-                "current": 1.23,
-            },
-        },
-        "battery_status": {
-            "description": "Status bits for the battery",
-            "id": 0x11,
-            "data": {
-                "battery_state": {
-                    "startup": True,
-                    "precharge": False,
-                    "discharging": False,
-                    "lv_only": False,
-                    "charging": False,
-                    "wall_charging": False,
-                    "killed": False,
-                },  # repeat for rest fo fields
-            },
-        },
-    }
-}
-
-
-def gui():
-    global heart_pulse_rate, phase, t0, x, y
-    # Make sure that the animation is smooth
-    hello_imgui.get_runner_params().fps_idling.enable_idling = False
-
-    t = time.time()
-    phase += (t - t0) * heart_pulse_rate / (np.pi * 2)
-    k = 0.8 + 0.1 * np.cos(phase)
-    t0 = t
-
-    imgui.show_demo_window()
-    main_window_flags: imgui.WindowFlags = imgui.WindowFlags_.no_collapse.value
-    imgui.begin("my application", p_open=None, flags=main_window_flags)
-
-    imgui.text("Bloat free code")
-    if implot.begin_plot("Heart", immapp.em_to_vec2(21, 21)):
-        implot.plot_line("", x * k, y * k)
-        implot.end_plot()
-
-    for board_name, board_packets in boards.items():
-        if imgui.tree_node(board_name):
-            for packet_name in board_packets:
-                if imgui.tree_node(packet_name):
-                    # display description if hovered
-                    pkt = board_packets[packet_name]
-                    if imgui.is_item_hovered():
-                        imgui.set_tooltip(pkt["description"])
-                    imgui.text(f"0x{pkt['id']:03X}")
-                    imgui.tree_pop()
-            imgui.tree_pop()
-    imgui.end()  # my application
-
-    _, heart_pulse_rate = imgui_knobs.knob("Pulse", heart_pulse_rate, 30, 180)
-
-
-# class State:
-#     def __init__(self):
-#
-#     def gui(self):
-
-if __name__ == "__main__":
-    immapp.run(
-        gui,
-        window_size=(300, 450),
-        window_title="Hello!",
-        with_implot=True,
-        fps_idle=0,
-    )  # type: ignore

py/pytelem/skylab.py

@@ -5,7 +5,7 @@ import re
 from pathlib import Path
 from typing import Callable, Iterable, NewType, TypedDict, List, Protocol, Union, Set
 
-from pydantic import BaseModel, validator
+from pydantic import field_validator, BaseModel, validator, model_validator
 from enum import Enum
 import yaml
 import jinja2
@@ -77,35 +77,33 @@ class SkylabField(BaseModel):
     "the name of the field. must be alphanumeric and underscores"
     type: FieldType
     "the type of the field"
-    units: str | None
+    units: str | None = None
     "optional descriptor of the unit representation"
-    conversion: float | None
+    conversion: float | None = None
     "optional conversion factor to be applied when parsing"
-    bits: List[_Bits] | None
+    bits: List[_Bits] | None = None
     "if the type if a bitfield, "
 
-    @validator("bits")
+    @model_validator(mode='after')
-    def bits_must_exist_if_bitfield(cls, v, values):
+    def bits_must_exist_if_bitfield(self) -> 'SkylabField':
-        if v is None and "type" in values and values["type"] is FieldType.Bitfield:
+        if self.bits is None and self.type == FieldType.Bitfield:
             raise ValueError("bits are not present on bitfield type")
-        if (
+        if self.bits is not None and self.type != FieldType.Bitfield:
-            v is not None
-            and "type" in values
-            and values["type"] is not FieldType.Bitfield
-        ):
             raise ValueError("bits are present on non-bitfield type")
-        return v
+        return self
 
-    @validator("name")
+    @field_validator("name")
-    def name_valid_string(cls, v: str):
+    @classmethod
+    def name_valid_string(cls, v: str) -> str:
         if not re.match(r"^[A-Za-z0-9_]+$", v):
-            return ValueError("invalid name")
+            raise ValueError("invalid name")
         return v
 
-    @validator("name")
+    @field_validator("name")
-    def name_nonzero_length(cls, v: str):
+    @classmethod
+    def name_nonzero_length(cls, v: str) -> str:
         if len(v) == 0:
-            return ValueError("name cannot be empty string")
+            raise ValueError("name cannot be empty string")
         return v
 
 
@@ -120,11 +118,11 @@ class SkylabPacket(BaseModel):
     """Represents a CAN packet. Contains SkylabFields with information on the structure of the data."""
 
     name: str
-    description: str | None
+    description: str | None = None
     id: int
     endian: Endian
-    repeat: int | None
+    repeat: int | None = None
-    offset: int | None
+    offset: int | None = None
     data: List[SkylabField]
 
     # @validator("data")
@@ -134,31 +132,37 @@ class SkylabPacket(BaseModel):
     #         return ValueError("Total packet size cannot exceed 8 bytes")
     #     return v
 
-    @validator("id")
+    @field_validator("id")
+    @classmethod
     def id_non_negative(cls, v: int) -> int:
         if v < 0:
             raise ValueError("id must be above zero")
         return v
 
-    @validator("name")
+    @field_validator("name")
+    @classmethod
     def name_valid_string(cls, v: str) -> str:
         if not re.match(r"^[A-Za-z0-9_]+$", v):
             raise ValueError("invalid name", v)
         return v
 
-    @validator("name")
+    @field_validator("name")
+    @classmethod
     def name_nonzero_length(cls, v: str) -> str:
         if len(v) == 0:
             raise ValueError("name cannot be empty string")
         return v
 
-    @validator("offset")
+    # TODO[pydantic]: We couldn't refactor the `validator`, please replace it by `field_validator` manually.
-    def offset_must_have_repeat(cls, v: int | None, values) -> int | None:
+    # Check https://docs.pydantic.dev/dev-v2/migration/#changes-to-validators for more information.
-        if v is not None and "repeat" in values and values["repeat"] is not None:
+    @model_validator(mode='after')
+    def offset_must_have_repeat(self) -> "SkylabPacket":
+        if self.offset is not None and self.repeat is not None:
             raise ValueError("field with offset must have repeat defined")
         return v
 
-    @validator("repeat")
+    @field_validator("repeat")
+    @classmethod
     def repeat_gt_one(cls, v: int | None):
         if v is not None and v <= 1:
             raise ValueError("repeat must be strictly greater than one")
@@ -180,13 +184,15 @@ class SkylabBoard(BaseModel):
     receive: List[str]
     "The packets received by this board."
 
-    @validator("name")
+    @field_validator("name")
+    @classmethod
     def name_valid_string(cls, v: str):
         if not re.match(r"^[A-Za-z0-9_]+$", v):
             return ValueError("invalid name", v)
         return v
 
-    @validator("name")
+    @field_validator("name")
+    @classmethod
     def name_nonzero_length(cls, v: str):
         if len(v) == 0:
             return ValueError("name cannot be empty string")
@@ -201,13 +207,15 @@ class SkylabBus(BaseModel):
     extended_id: bool
     "If the bus uses extended ids"
 
-    @validator("name")
+    @field_validator("name")
+    @classmethod
     def name_valid_string(cls, v: str):
         if not re.match(r"^[A-Za-z0-9_]+$", v):
             return ValueError("invalid name", v)
         return v
 
-    @validator("baud_rate")
+    @field_validator("baud_rate")
+    @classmethod
     def baud_rate_supported(cls, v: int):
         if v not in [125000, 250000, 500000, 750000, 1000000]:
             raise ValueError("unsupported baud rate", v)

py/pytelem/widgets/smart_display.py

@@ -0,0 +1,145 @@
+# A simple display for numbers with optional trend_data line, histogram, min/max, and rolling average.
+from PySide6.QtCore import Qt, Slot, QSize
+from PySide6.QtGui import QAction, QFontDatabase
+from PySide6.QtWidgets import (
+    QWidget, QVBoxLayout, QLabel, QSizePolicy, QGridLayout
+)
+import numpy as np
+
+import pyqtgraph as pg
+from typing import Optional, List
+
+
+class _StatsDisplay(QWidget):
+    """Helper Widget for the stats display."""
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        # create grid array, minimum size vertically.
+        layout = QGridLayout(self)
+        self.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Fixed)
+
+    @Slot(float, float, float)
+    def update_values(self, new_min: float, new_avg: float, new_max: float):
+
+
+
+class SmartDisplay(QWidget):
+    """A simple numeric display with optional statistics, trends, and histogram"""
+
+    value: float = 0.0
+    min: float = -float("inf")
+    max: float = float("inf")
+    avg: float = 0.0
+    trend_data: List[float] = []
+    histogram_data: List[float] = []
+
+    # TODO: settable sample count for histogram/trend in right click menu
+
+    def __init__(self, parent=None, title: str = None, initial_value: float = None, unit_suffix=None,
+                 show_histogram=False, show_trendline: bool = False, show_stats=False,
+                 histogram_samples=100, trend_samples=30):
+        super().__init__(parent)
+        self.trend_samples = trend_samples
+        self.histogram_samples = histogram_samples
+        layout = QVBoxLayout(self)
+        if title is not None:
+            self.title = title
+            # create the title label
+            self.title_widget = QLabel(title, self)
+            self.title_widget.setAlignment(Qt.AlignmentFlag.AlignHCenter)
+            self.title_widget.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Fixed)
+            layout.addWidget(self.title_widget)
+
+        number_font = QFontDatabase.systemFont(QFontDatabase.SystemFont.FixedFont)
+        number_font.setPointSize(18)
+        self.value = initial_value
+        self.suffix = unit_suffix or ""
+        self.value_widget = QLabel(f"{self.value}{self.suffix}", self)
+        self.value_widget.setAlignment(Qt.AlignmentFlag.AlignHCenter)
+        self.value_widget.setFont(number_font)
+        layout.addWidget(self.value_widget)
+
+        # histogram widget
+        self.histogram_widget = pg.PlotWidget(self, title="Histogram")
+        self.histogram_widget.enableAutoRange()
+        self.histogram_widget.setVisible(False)
+        self.histogram_graph = pg.PlotDataItem()
+        self.histogram_widget.addItem(self.histogram_graph)
+
+        layout.addWidget(self.histogram_widget)
+
+        # stats display
+
+        # trendline display
+        self.trendline_widget = pg.PlotWidget(self, title="Trend")
+        self.trendline_widget.enableAutoRange()
+        self.trendline_widget.setVisible(False)
+        self.trendline_data = pg.PlotDataItem()
+        self.trendline_widget.addItem(self.trendline_data)
+
+        layout.addWidget(self.trendline_widget)
+        toggle_histogram = QAction("Show Histogram", self, checkable=True)
+        toggle_histogram.toggled.connect(self._toggle_histogram)
+        self.addAction(toggle_histogram)
+
+        toggle_trendline = QAction("Show Trendline", self, checkable=True)
+        toggle_trendline.toggled.connect(self._toggle_trendline)
+        self.addAction(toggle_trendline)
+
+        reset_stats = QAction("Reset Data", self)
+        reset_stats.triggered.connect(self.reset_data)
+        self.addAction(reset_stats)
+
+        # use the QWidget Actions list as the right click context menu. This is inherited by children.
+        self.setContextMenuPolicy(Qt.ActionsContextMenu)
+
+
+    def _toggle_histogram(self):
+        self.histogram_widget.setVisible(not self.histogram_widget.isVisible())
+
+    def _toggle_trendline(self):
+        self.trendline_widget.setVisible(not self.trendline_widget.isVisible())
+
+    def _update_view(self):
+        self.trendline_data.setData(self.trend_data)
+        self.value_widget.setText(f"{self.value:4g}{self.suffix}")
+        if self.histogram_widget.isVisible():
+            hist, bins = np.histogram(self.histogram_data)
+            self.histogram_graph.setData(bins, hist, stepMode="center")
+
+    @Slot(float)
+    def update_value(self, value: float):
+        """Update the value displayed and associated stats."""
+        self.value = value
+
+        # update stats.
+        if self.value > self.max:
+            self.max = self.value
+        if self.value < self.min:
+            self.min = self.value
+
+        # update trend_data data.
+        self.trend_data.append(value)
+        if len(self.trend_data) > self.trend_samples:
+            self.trend_data.pop(0)
+
+        # update histogram
+        self.histogram_data.append(value)
+        if len(self.histogram_data) > self.histogram_samples:
+            self.histogram_data.pop(0)
+
+        # update average
+        # noinspection PyTypeChecker
+        self.avg = np.cumsum(self.trend_data) / len(self.trend_data)
+
+        # re-render data.
+        self._update_view()
+
+    @Slot()
+    def reset_data(self):
+        """Resets the existing data (trendline, stats, histogram)"""
+        self.max = float("inf")
+        self.min = -float("inf")
+        self.trend_data = []
+        self.histogram_data = []