thermostat/pytec/tecQT.py

from pyqtgraph.Qt import QtGui, QtCore
import pyqtgraph.parametertree.parameterTypes as pTypes
from pyqtgraph.parametertree import Parameter, ParameterTree, ParameterItem, registerParameterType
import numpy as np
import pyqtgraph as pg
from pytec.client import Client
from enum import Enum
from autotune import PIDAutotune, PIDAutotuneState

rec_len = 1000
refresh_period = 20

TECparams = [ [    
    {'tag': 'report', 'type': 'parent', 'children': [
        {'tag': 'pid_engaged', 'type': 'bool', 'value': False},
    ]},
    {'tag': 'pwm', 'type': 'parent', 'children': [
        {'tag': 'max_i_pos', 'type': 'float', 'value': 0},
        {'tag': 'max_i_neg', 'type': 'float', 'value': 0},
        {'tag': 'max_v', 'type': 'float', 'value': 0},
        {'tag': 'i_set', 'type': 'float', 'value': 0},
    ]},
    {'tag': 'pid', 'type': 'parent', 'children': [
        {'tag': 'kp', 'type': 'float', 'value': 0},
        {'tag': 'ki', 'type': 'float', 'value': 0},
        {'tag': 'kd', 'type': 'float', 'value': 0},
        {'tag': 'output_min', 'type': 'float', 'value': 0},
        {'tag': 'output_max', 'type': 'float', 'value': 0},
    ]},
    {'tag': 's-h', 'type': 'parent', 'children': [
        {'tag': 't0', 'type': 'float', 'value': 0},
        {'tag': 'r0', 'type': 'float', 'value': 0},
        {'tag': 'b', 'type': 'float', 'value': 0},
    ]},
    {'tag': 'PIDtarget', 'type': 'parent', 'children': [
        {'tag': 'target', 'type': 'float', 'value': 0},
    ]},
] for _ in range(2)]

GUIparams = [[
    {'name': 'Disable Output', 'type': 'action', 'tip': 'Disable Output'},
    {'name': 'Constant Current', 'type': 'group', 'children': [
        {'name': 'Set Current', 'type': 'float', 'value': 0, 'step': 0.1, 'limits': (-3, 3), 'siPrefix': True, 'suffix': 'A'},
    ]},    
    {'name': 'Temperature PID', 'type': 'bool', 'value': False, 'children': [
        {'name': 'Set Temperature', 'type': 'float', 'value': 25, 'step': 0.1, 'limits': (-273, 300), 'siPrefix': True, 'suffix': 'C'},
    ]},    
    {'name': 'Output Config', 'expanded': False, 'type': 'group', 'children': [
        {'name': 'Max Current', 'type': 'float', 'value': 0, 'step': 0.1, 'limits': (0, 3), 'siPrefix': True, 'suffix': 'A'},
        {'name': 'Max Voltage', 'type': 'float', 'value': 0, 'step': 0.1, 'limits': (0, 5), 'siPrefix': True, 'suffix': 'V'},
    ]},
    {'name': 'Thermistor Config', 'expanded': False,  'type': 'group', 'children': [
        {'name': 'T0', 'type': 'float', 'value': 25, 'step': 0.1, 'limits': (-100, 100), 'siPrefix': True, 'suffix': 'C'},
        {'name': 'R0', 'type': 'float', 'value': 10000, 'step': 1, 'siPrefix': True, 'suffix': 'Ohm'},
        {'name': 'Beta', 'type': 'float', 'value': 3950, 'step': 1},
    ]},
    {'name': 'PID Config', 'expanded': False,  'type': 'group', 'children': [
        {'name': 'kP', 'type': 'float', 'value': 0, 'step': 0.1},
        {'name': 'kI', 'type': 'float', 'value': 0, 'step': 0.1},
        {'name': 'kD', 'type': 'float', 'value': 0, 'step': 0.1},
        {'name': 'PID Auto Tune', 'expanded': False,  'type': 'group', 'children': [
            {'name': 'Target Temperature', 'type': 'float', 'value': 20, 'step': 0.1, 'siPrefix': True, 'suffix': 'C'},
            {'name': 'Test Current', 'type': 'float', 'value': 1, 'step': 0.1, 'siPrefix': True, 'suffix': 'A'},
            {'name': 'Temperature Swing', 'type': 'float', 'value': 1.5, 'step': 0.1, 'siPrefix': True, 'suffix': 'C'},
            {'name': 'Run', 'type': 'action', 'tip': 'Run'},
        ]},
    ]},
    {'name': 'Save to flash', 'type': 'action', 'tip': 'Save to flash'},
] for _ in range(2)]

autoTuneState = [PIDAutotuneState.STATE_OFF, 'idle']

## If anything changes in the tree, print a message
def change(param, changes, ch):
    print("tree changes:")
    for param, change, data in changes:
        path = paramList[ch].childPath(param)
        if path is not None:
            childName = '.'.join(path)
        else:
            childName = param.name()
        print('  parameter: %s'% childName)
        print('  change:    %s'% change)
        print('  data:      %s'% str(data))
        print('  ----------')

        if (childName == 'Disable Output'):
            tec.set_param('pwm', ch, 'i_set', 0)
            paramList[ch].child('Constant Current').child('Set Current').setValue(0) 
            paramList[ch].child('Temperature PID').setValue(False)          

        if (childName == 'Temperature PID'):
            if (data):
                tec.set_param("pwm", ch, "pid")
            else:
                tec.set_param('pwm', ch, 'i_set', paramList[ch].child('Constant Current').child('Set Current').value())  
        
        if (childName == 'Constant Current.Set Current'):
            tec.set_param('pwm', ch, 'i_set', data)
            paramList[ch].child('Temperature PID').setValue(False)  

        if (childName == 'Temperature PID.Set Temperature'):
            tec.set_param('pid', ch, 'target', data)

        if (childName == 'Output Config.Max Current'):
            tec.set_param('pwm', ch, 'max_i_pos', data)
            tec.set_param('pwm', ch, 'max_i_neg', data)
            tec.set_param('pid', ch, 'output_min', -data)
            tec.set_param('pid', ch, 'output_max', data)

        if (childName == 'Output Config.Max Voltage'):
            tec.set_param('pwm', ch, 'max_v', data)

        if (childName == 'Thermistor Config.T0'):
            tec.set_param('s-h', ch, 't0', data)

        if (childName == 'Thermistor Config.R0'):
            tec.set_param('s-h', ch, 'r0', data)

        if (childName == 'Thermistor Config.Beta'):
            tec.set_param('s-h', ch, 'b', data)

        if (childName == 'PID Config.kP'):
            tec.set_param('pid', ch, 'kp', data)

        if (childName == 'PID Config.kI'):
            tec.set_param('pid', ch, 'ki', data)

        if (childName == 'PID Config.kD'):
            tec.set_param('pid', ch, 'kd', data)

        if (childName == 'PID Config.PID Auto Tune.Run'):
            autoTuneState[ch] = 'triggered'

        if (childName == 'Save to flash'):
            tec.save_config()
        
def change0(param, changes):
    change(param, changes, 0)

def change1(param, changes):
    change(param, changes, 1)

class Curves:
    def __init__(self, legend: str, key: str, channel: int, color: str, buffer_len: int, period: int):
        self.curveItem = pg.PlotCurveItem(pen=({'color': color, 'width': 1}))
        self.legendStr = legend
        self.keyStr = key
        self.channel = channel
        self.data_buf = np.zeros(buffer_len)
        self.time_stamp = np.zeros(buffer_len)
        self.buffLen = buffer_len
        self.period = period
    
    def update(self, tec_data, cnt):
        if cnt == 0:
            np.copyto(self.data_buf, np.full(self.buffLen, tec_data[self.channel][self.keyStr]))
        else: 
            self.data_buf[:-1] = self.data_buf[1:]
            self.data_buf[-1] = tec_data[self.channel][self.keyStr]
            self.time_stamp[:-1] = self.time_stamp[1:]
            self.time_stamp[-1] = cnt * self.period / 1000
            self.curveItem.setData(x = self.time_stamp, y = self.data_buf)

class Graph:
    def __init__(self, parent: pg.LayoutWidget, title: str, row: int, col: int, curves: list[Curves]):
        self.plotItem = pg.PlotWidget(title=title)
        self.legendItem = pg.LegendItem(offset=(75, 30), brush=(50,50,200,150))
        self.legendItem.setParentItem(self.plotItem.getPlotItem())
        parent.addWidget(self.plotItem, row, col)
        self.curves = curves
        for curve in self.curves:
            self.plotItem.addItem(curve.curveItem)
            self.legendItem.addItem(curve.curveItem, curve.legendStr)

    def update(self, tec_data, cnt):
        for curve in self.curves:
            curve.update(tec_data, cnt)
        self.plotItem.setRange(xRange=[(cnt - self.curves[0].buffLen) * self.curves[0].period / 1000, cnt * self.curves[0].period / 1000])

def TECsync():
    global TECparams
    for channel in range(2):
        for parents in TECparams[channel]:
            if parents['tag'] == 'report':
                for data in tec.report_mode():
                    for children in parents['children']:
                        children['value'] = data[channel][children['tag']]
                        print(data[channel][children['tag']])
                    if quit:
                        break
            if parents['tag'] == 'pwm':
                for children in parents['children']:
                    children['value'] = tec.get_pwm()[channel][children['tag']]['value']
            if parents['tag'] == 'pid':
                for children in parents['children']:
                    children['value'] = tec.get_pid()[channel]['parameters'][children['tag']]
            if parents['tag'] == 's-h':
                for children in parents['children']:
                    children['value'] = tec.get_steinhart_hart()[channel]['params'][children['tag']]
            if parents['tag'] == 'PIDtarget':
                for children in parents['children']:
                    children['value'] = tec.get_pid()[channel]['target']
    
def refreshTreeParam(tempTree:dict, channel:int) -> dict:
    tempTree['children']['Constant Current']['children']['Set Current']['value'] = TECparams[channel][1]['children'][3]['value']
    tempTree['children']['Temperature PID']['value'] = TECparams[channel][0]['children'][0]['value']
    tempTree['children']['Temperature PID']['children']['Set Temperature']['value'] = TECparams[channel][4]['children'][0]['value']
    tempTree['children']['Output Config']['children']['Max Current']['value'] = TECparams[channel][1]['children'][0]['value']
    tempTree['children']['Output Config']['children']['Max Voltage']['value'] = TECparams[channel][1]['children'][2]['value']
    tempTree['children']['Thermistor Config']['children']['T0']['value'] = TECparams[channel][3]['children'][0]['value'] - 273.15
    tempTree['children']['Thermistor Config']['children']['R0']['value'] = TECparams[channel][3]['children'][1]['value']
    tempTree['children']['Thermistor Config']['children']['Beta']['value'] = TECparams[channel][3]['children'][2]['value']
    tempTree['children']['PID Config']['children']['kP']['value'] = TECparams[channel][2]['children'][0]['value']
    tempTree['children']['PID Config']['children']['kI']['value'] = TECparams[channel][2]['children'][1]['value']
    tempTree['children']['PID Config']['children']['kD']['value'] = TECparams[channel][2]['children'][2]['value']
    return tempTree

cnt = 0
def updateData():
    global cnt
    for data in tec.report_mode():

        ch0tempGraph.update(data, cnt)
        ch1tempGraph.update(data, cnt)
        ch0currentGraph.update(data, cnt)
        ch1currentGraph.update(data, cnt)

        for state in autoTuneState:
            if state == 'triggered':
                state = 'tuning'

                
        if quit:
            break
    cnt += 1    
    

if __name__ == '__main__':
    tec = Client(host="192.168.1.26", port=23, timeout=None)

    app = pg.mkQApp()
    pg.setConfigOptions(antialias=True)
    mw = QtGui.QMainWindow()
    mw.setWindowTitle('Thermostat Control Panel')
    mw.resize(1920,1200)
    cw = QtGui.QWidget()
    mw.setCentralWidget(cw)
    l = QtGui.QVBoxLayout()
    layout = pg.LayoutWidget()
    l.addWidget(layout)
    cw.setLayout(l)

    ## Create tree of Parameter objects
    paramList = [Parameter.create(name='GUIparams', type='group', children=GUIparams[0]),
                 Parameter.create(name='GUIparams', type='group', children=GUIparams[1])]

    ch0Tree = ParameterTree()
    ch0Tree.setParameters(paramList[0], showTop=False)    
    ch1Tree = ParameterTree()
    ch1Tree.setParameters(paramList[1], showTop=False)

    TECsync()
    paramList[0].restoreState(refreshTreeParam(paramList[0].saveState(), 0))
    paramList[1].restoreState(refreshTreeParam(paramList[1].saveState(), 1))

    paramList[0].sigTreeStateChanged.connect(change0)
    paramList[1].sigTreeStateChanged.connect(change1)

    layout.addWidget(ch0Tree, 1, 1, 1, 1)
    layout.addWidget(ch1Tree, 2, 1, 1, 1)

    ch0tempGraph = Graph(layout, 'Channel 0 Temperature', 1, 2, [Curves('Feedback', 'temperature', 0, 'r', rec_len, refresh_period)])
    ch1tempGraph = Graph(layout, 'Channel 1 Temperature', 2, 2, [Curves('Feedback', 'temperature', 1, 'r', rec_len, refresh_period)])
    ch0currentGraph = Graph(layout, 'Channel 0 Current', 1, 3, [Curves('Feedback', 'tec_i', 0, 'r', rec_len, refresh_period),
                                                                Curves('Setpoint', 'i_set', 0, 'g', rec_len, refresh_period)])
    ch1currentGraph = Graph(layout, 'Channel 1 Current', 2, 3, [Curves('Feedback', 'tec_i', 1, 'r', rec_len, refresh_period),
                                                                Curves('Setpoint', 'i_set', 1, 'g', rec_len, refresh_period)])

    t = QtCore.QTimer()
    t.timeout.connect(updateData)
    t.start(refresh_period)

    mw.show()

    pg.exec()