无法获得PyQt5Designer LCD盒以接收显示信号并更新显示
我在寻找如何使线程将整数值发送到PyQT中的“ LCD”显示器的解决方案后感到非常困惑。以下是我的代码，该代码采用ADC的值并采用adafruit GPS模块来收集一些数据。我想弄清楚如何将线程中的整数值发送到LCD显示器（在本例中为MphLCD显示器），以便可以在GUI中显示实时值。尝试一切后，我的代码可能一团糟，但是当我认为得到它时，应用程序因从其他线程或其他内容访问GUI项目而崩溃。我对QT相当陌生，因此尽管设计人员会帮助我进行设置，但它只是做到了，所以我不理解“表单”或何时，何时完成以及何时插入新定义
import busio
import sys
import digitalio
import board
import adafruit_mcp3xxx.mcp3008 as MCP
from adafruit_mcp3xxx.analog_in import AnalogIn
import time
import serial
import adafruit_gps
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
#-----------------------------------------------------------------
# Initialize MCP3008 ADC
#-----------------------------------------------------------------
# create the spi bus
spi = busio.SPI(clock=board.SCK, MISO=board.MISO, MOSI=board.MOSI)
# create the cs (chip select)
cs = digitalio.DigitalInOut(board.D5)
# create the mcp object
mcp = MCP.MCP3008(spi, cs)
# create an analog input channel on pin 0
chan = AnalogIn(mcp, MCP.P0)
#print('Raw ADC Value: ', chan.value)
#print('ADC Voltage: ' + str(chan.voltage) + 'V')
#----------------------------------------------------------------
# Initialize GPS
#----------------------------------------------------------------
# Create a serial connection for the GPS connection using default speed and
# a slightly higher timeout (GPS modules typically update once a second).
# Default speed requires timeout of 3000, twice/second timeout of 1500
uart = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=1500)
# Create a GPS module instance.
gps = adafruit_gps.GPS(uart, debug=False)
# Turn on the basic GGA and RMC info (what you typically want)
gps.send_command(b'PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')
# Set update rate to twice/second (2hz)
gps.send_command(b'PMTK220,2000')
#-------------------------------------------------------------
# Qt Stuff Here
#--------------------------------------------------------------
class Ui_Form(object):
Speed = pyqtSignal(int)
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(800, 480)
Form.setStyleSheet("background-image: url(:/roccopic/VCSciroccoscaled.png);")
def setlcd(QGraphicsObject):
self.MphLCD = QtWidgets.QLCDNumber(setupUi.Form)
self.MphLCD.setGeometry(QtCore.QRect(600, 230, 71, 61))
self.MphLCD.setStyleSheet("background-image: url(:/roccopic/black.png);\n"
"border-image: url(:/roccopic/black.png);")
self.MphLCD.setObjectName("MphLCD")
self.Speed.connect(self.MphLCD.display)
self.TempBar = QtWidgets.QProgressBar(Form)
self.TempBar.setGeometry(QtCore.QRect(130, 410, 101, 20))
self.TempBar.setAutoFillBackground(False)
self.TempBar.setStyleSheet("")
self.TempBar.setMinimum(135)
self.TempBar.setMaximum(185)
self.TempBar.setProperty("value", 150)
self.TempBar.setTextVisible(False)
self.TempBar.setOrientation(QtCore.Qt.Horizontal)
self.TempBar.setObjectName("TempBar")
self.FuelBar = QtWidgets.QProgressBar(Form)
self.FuelBar.setGeometry(QtCore.QRect(570, 411, 101, 20))
self.FuelBar.setProperty("value", 24)
self.FuelBar.setTextVisible(False)
self.FuelBar.setOrientation(QtCore.Qt.Horizontal)
self.FuelBar.setObjectName("FuelBar")
self.RpmLCD = QtWidgets.QLCDNumber(Form)
self.RpmLCD.setGeometry(QtCore.QRect(130, 230, 71, 61))
self.RpmLCD.setStyleSheet("background-image: url(:/roccopic/black.png);\n"
"border-image: url(:/roccopic/black.png);")
self.RpmLCD.setObjectName("RpmLCD")
#self.RpmLCD.display(99)
self.DateLCD = QtWidgets.QLCDNumber(Form)
self.DateLCD.setGeometry(QtCore.QRect(310, 120, 181, 23))
self.DateLCD.setStyleSheet("border-image: url(:/roccopic/black.png);\n"
"background-image: url(:/roccopic/black.png);")
self.DateLCD.setObjectName("DateLCD")
#self.DateLCD.display(9999)
self.MilesLCD = QtWidgets.QLCDNumber(Form)
self.MilesLCD.setGeometry(QtCore.QRect(310, 350, 181, 16))
self.MilesLCD.setStyleSheet("border-image: url(:/roccopic/black.png);\n"
"background-image: url(:/roccopic/black.png);")
self.MilesLCD.setObjectName("MilesLCD")
#self.MilesLCD.display(int(gps.speed_knots))
self.TimeLCD = QtWidgets.QLCDNumber(Form)
self.TimeLCD.setGeometry(QtCore.QRect(310, 370, 181, 16))
self.TimeLCD.setStyleSheet("border-image: url(:/roccopic/black.png);\n"
"background-image: url(:/roccopic/black.png);")
self.TimeLCD.setObjectName("TimeLCD")
#self.TimeLCD.display(time)
self.workerThread = WorkerThread()
self.workerThread.start()
self.retranslateUi(Form)
Form.showFullScreen()
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "SCIROCCO"))
class WorkerThread(QThread):
def __init__(self, parent=None):
super(WorkerThread, self).__init__(parent)
def run(QGraphicsObject):
print("Done with thread")
last_print = time.monotonic()
while True:
gps.update()
current = time.monotonic()
if current - last_print >= 1:
last_print = current
if not gps.has_fix:
# Try again if we don't have a fix yet.
print('Waiting for fix...')
continue
# We have a fix! (gps.has_fix is true)
# Print out details about the fix like location, date, etc.
print('=' * 40) # Print a separator line.
print('Fix timestamp: {}/{}/{} {:02}:{:02}:{:02}'.format(
gps.timestamp_utc.tm_mon, # Grab parts of the time from the
gps.timestamp_utc.tm_mday, # struct_time object that holds
gps.timestamp_utc.tm_year, # the fix time. Note you might
gps.timestamp_utc.tm_hour, # not get all data like year, day,
gps.timestamp_utc.tm_min, # month!
gps.timestamp_utc.tm_sec))
print('Latitude: {0:.6f} degrees'.format(gps.latitude))
print('Longitude: {0:.6f} degrees'.format(gps.longitude))
print('Fix quality: {}'.format(gps.fix_quality))
# Some attributes beyond latitude, longitude and timestamp are optional
# and might not be present. Check if they're None before trying to use!
if gps.satellites is not None:
print('# satellites: {}'.format(gps.satellites))
if gps.altitude_m is not None:
print('Altitude: {} meters'.format(gps.altitude_m))
if gps.track_angle_deg is not None:
self.Speed.emit(gps.speed_knots)#print('Speed: {} MPH'.format(gps.speed_knots*1.150779))
if gps.track_angle_deg is not None:
print('Track angle: {} degrees'.format(gps.track_angle_deg))
if gps.horizontal_dilution is not None:
print('Horizontal dilution: {}'.format(gps.horizontal_dilution))
if gps.height_geoid is not None:
print('Height geo ID: {} meters'.format(gps.height_geoid))
import scirocco_rc
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
1 个答案:
答案 0 :(得分：0)
尝试一下：
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class WorkerThread(QThread):
Speed = pyqtSignal(int) # <---
def __init__(self, parent=None):
super().__init__()
self.num = 0
self.flag = True
def run(self):
while self.flag:
# ...
# Here we get the integer values for the LCD
self.num += 1
QThread.msleep(2000) # imitate the work flow
self.Speed.emit(self.num) # <---
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(800, 480)
self.MphLCD = QLCDNumber(Form)
self.MphLCD.setGeometry(QRect(600, 230, 71, 61))
self.MphLCD.setObjectName("MphLCD")
self.workerThread = WorkerThread()
self.workerThread.Speed.connect(self.MphLCD.display) # <---
self.workerThread.start()
self.retranslateUi(Form)
# Form.showFullScreen()
QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "SCIROCCO"))
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
Form = QWidget()
Form.resize(800, 480)
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
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