ctrl_panel: Remove need for "mA" hack

Remove all instances of mA scaling scattered all around the code and
specify it in the parameter tree with a single source of truth.

Done by adding the option "pinSiPrefix" for all Parameters of type `int`
or `float`, and using it for current Parameters with unit "mA".
This commit is contained in:
atse 2024-07-31 16:02:12 +08:00
parent d96d36fb0c
commit c59e3e7ac4
4 changed files with 135 additions and 30 deletions

View File

@ -4,6 +4,7 @@ from pyqtgraph.parametertree import (
Parameter,
registerParameterType,
)
import pytec.gui.view.pin_si_prefix
class MutexParameter(pTypes.ListParameter):
@ -136,10 +137,10 @@ class CtrlPanel(QObject):
)
self.params[channel].child(
"pid", "pid_output_clamping", "output_min"
).setValue(settings["parameters"]["output_min"] * 1000)
).setValue(settings["parameters"]["output_min"])
self.params[channel].child(
"pid", "pid_output_clamping", "output_max"
).setValue(settings["parameters"]["output_max"] * 1000)
).setValue(settings["parameters"]["output_max"])
self.params[channel].child(
"output", "control_method", "target"
).setValue(settings["target"])
@ -154,7 +155,7 @@ class CtrlPanel(QObject):
)
self.params[channel].child(
"output", "control_method", "i_set"
).setValue(settings["i_set"] * 1000)
).setValue(settings["i_set"])
if settings["temperature"] is not None:
self.params[channel].child("temperature").setValue(
settings["temperature"]
@ -188,10 +189,10 @@ class CtrlPanel(QObject):
pwm_params["max_v"]["value"]
)
self.params[channel].child("output", "limits", "max_i_pos").setValue(
pwm_params["max_i_pos"]["value"] * 1000
pwm_params["max_i_pos"]["value"]
)
self.params[channel].child("output", "limits", "max_i_neg").setValue(
pwm_params["max_i_neg"]["value"] * 1000
pwm_params["max_i_neg"]["value"]
)
for limit in "max_i_pos", "max_i_neg", "max_v":

View File

@ -48,14 +48,16 @@
"title": "Set Current",
"type": "float",
"value": 0,
"step": 100,
"step": 0.1,
"limits": [
-2000,
2000
-2,
2
],
"triggerOnShow": true,
"decimals": 6,
"suffix": "mA",
"pinSiPrefix": "m",
"suffix": "A",
"siPrefix": true,
"param": [
"pwm",
"ch",
@ -97,13 +99,15 @@
"title": "Max Cooling Current",
"type": "float",
"value": 0,
"step": 100,
"step": 0.1,
"decimals": 6,
"limits": [
0,
2000
2
],
"suffix": "mA",
"siPrefix": true,
"pinSiPrefix": "m",
"suffix": "A",
"param": [
"pwm",
"ch",
@ -117,13 +121,15 @@
"title": "Max Heating Current",
"type": "float",
"value": 0,
"step": 100,
"step": 0.1,
"decimals": 6,
"siPrefix": true,
"pinSiPrefix": "m",
"suffix": "A",
"limits": [
0,
2000
2
],
"suffix": "mA",
"param": [
"pwm",
"ch",
@ -296,13 +302,15 @@
"name": "output_min",
"title": "Minimum",
"type": "float",
"step": 100,
"step": 0.1,
"limits": [
-2000,
2000
-2,
2
],
"decimals": 6,
"suffix": "mA",
"siPrefix": true,
"pinSiPrefix": "m",
"suffix": "A",
"param": [
"pid",
"ch",
@ -315,13 +323,15 @@
"name": "output_max",
"title": "Maximum",
"type": "float",
"step": 100,
"step": 0.1,
"limits": [
-2000,
2000
-2,
2
],
"decimals": 6,
"suffix": "mA",
"siPrefix": true,
"pinSiPrefix": "m",
"suffix": "A",
"param": [
"pid",
"ch",
@ -358,12 +368,14 @@
"type": "float",
"value": 0,
"decimals": 6,
"step": 100,
"step": 0.1,
"limits": [
-2000,
2000
-2,
2
],
"suffix": "mA",
"siPrefix": true,
"pinSiPrefix": "m",
"suffix": "A",
"pid_autotune": [
"test_current",
"ch"

View File

@ -0,0 +1,95 @@
from pyqtgraph import SpinBox
import pyqtgraph.functions as fn
from pyqtgraph.parametertree import registerParameterItemType
from pyqtgraph.parametertree.parameterTypes import SimpleParameter, NumericParameterItem
class PinSIPrefixSpinBox(SpinBox):
"""
Extension of PyQtGraph's SpinBox widget.
Adds:
* The "pinSiPrefix" option, where the siPrefix could be fixed to a
particular scale instead of as determined by its value.
"""
def setOpts(self, **opts):
if "pinSiPrefix" in opts:
self.opts["pinSiPrefix"] = opts.pop("pinSiPrefix")
super().setOpts(**opts)
def formatText(self, prev=None):
"""
In addition to pyqtgraph.SpinBox's formatting, incorporate the
'pinSiPrefix' mechanism, where SI prefixes could be fixed.
"""
# Code modified from the PyQtGraph source
# get the number of decimal places to print
decimals = self.opts['decimals']
suffix = self.opts['suffix']
prefix = self.opts['prefix']
pin_si_prefix = self.opts.get("pinSiPrefix")
# format the string
val = self.value()
if self.opts['siPrefix'] is True:
# SI prefix was requested, so scale the value accordingly
if pin_si_prefix is not None and pin_si_prefix in fn.SI_PREFIX_EXPONENTS:
# fixed scale
s = 10**-fn.SI_PREFIX_EXPONENTS[pin_si_prefix]
p = pin_si_prefix
elif self.val == 0 and prev is not None:
# special case: if it's zero use the previous prefix
(s, p) = fn.siScale(prev)
else:
(s, p) = fn.siScale(val)
parts = {'value': val, 'suffix': suffix, 'decimals': decimals, 'siPrefix': p, 'scaledValue': s*val, 'prefix':prefix}
else:
# no SI prefix /suffix requested; scale is 1
parts = {'value': val, 'suffix': suffix, 'decimals': decimals, 'siPrefix': '', 'scaledValue': val, 'prefix':prefix}
parts['prefixGap'] = '' if parts['prefix'] == '' else ' '
parts['suffixGap'] = '' if (parts['suffix'] == '' and parts['siPrefix'] == '') else ' '
return self.opts['format'].format(**parts)
class PinSIPrefixNumericParameterItem(NumericParameterItem):
"""
Subclasses PyQtGraph's `NumericParameterItem` and uses
PinSIPrefixSpinBox for editing.
"""
def makeWidget(self):
opts = self.param.opts
t = opts['type']
defs = {
'value': 0, 'min': None, 'max': None,
'step': 1.0, 'dec': False,
'siPrefix': False, 'suffix': '', 'decimals': 3,
'pinSiPrefix': None,
}
if t == 'int':
defs['int'] = True
defs['minStep'] = 1.0
for k in defs:
if k in opts:
defs[k] = opts[k]
if 'limits' in opts:
defs['min'], defs['max'] = opts['limits']
w = PinSIPrefixSpinBox()
w.setOpts(**defs)
w.sigChanged = w.sigValueChanged
w.sigChanging = w.sigValueChanging
return w
registerParameterItemType(
"float", PinSIPrefixNumericParameterItem, SimpleParameter, override=True
)
registerParameterItemType(
"int", PinSIPrefixNumericParameterItem, SimpleParameter, override=True
)

View File

@ -267,9 +267,6 @@ class MainWindow(QtWidgets.QMainWindow):
for inner_param, change, data in changes:
if change == "value":
if inner_param.opts.get("param", None) is not None:
if inner_param.opts.get("suffix", None) == "mA":
data /= 1000 # Given in mA
thermostat_param = inner_param.opts["param"]
if thermostat_param[1] == "ch":
thermostat_param[1] = ch