Question

在学校，我们目前正在与Raspberry Pi和GrovePi合作。对于一个小项目，我们正在尝试使其工作。我们正在使用包含的脚本作为基础，因为这是我们第一次使用Python。现在我们得到了这个错误；

 Traceback (most recent call last):
  File "/home/pi/GrovePi/Projects/Home_Weather_Display/Home_Weather_Display.py", line 74, in <module>
    setText_norefresh("Temp:" + t + "C\n" + "Humidity :" + h + "%")
NameError: name 'setText_norefresh' is not defined

因此，我们试图使此脚本正常工作，它是一个将温度和湿度显示给Grove-LCD RGB背光的脚本。我希望有人能帮助我们。

    from grovepi import *
from grove_rgb_lcd import *
from time import sleep
from math import isnan

def set_text(text):
    e.delete(0,END)
    e.insert(0,text)
    return

dht_sensor_port = 7 # connect the DHt sensor to port 7
dht_sensor_type = 0 # use 0 for the blue-colored sensor and 1 for the white-colored sensor

# set green as backlight color
# we need to do it just once
# setting the backlight color once reduces the amount of data transfer over the I2C line


while True:
    try:
        # get the temperature and Humidity from the DHT sensor
        [ temp,hum ] = dht(dht_sensor_port,dht_sensor_type)
        print("temp =", temp, "C\thumidity =", hum,"%")

        # check if we have nans
        # if so, then raise a type error exception
        if isnan(temp) is True or isnan(hum) is True:
            raise TypeError('nan error')

        t = str(temp)
        h = str(hum)

        # instead of inserting a bunch of whitespace, we can just insert a \n
        # we're ensuring that if we get some strange strings on one line, the 2nd one won't be affected
        setText_norefresh("Temp:" + t + "C\n" + "Humidity :" + h + "%")

    except (IOError, TypeError) as e:
        print(str(e))
        # and since we got a type error
        # then reset the LCD's text
        setText("")

    except KeyboardInterrupt as e:
        print(str(e))
        # since we're exiting the program
        # it's better to leave the LCD with a blank text
        setText("")
        break

    # wait some time before re-updating the LCD
    sleep(0.05)

未定义setText GrovePi（Python）

0 个答案: