Wat doe ik verkeerd met deze python script?
Ik ben met mijn grove verbonden met de Raspberry Pi en ik heb deze code:
#!/usr/bin/env python
import time
from mraa import getGpioLookup
from upm import pyupm_buzzer as upmBuzzer
from grove.grove_moisture_sensor import GroveMoistureSensor
from grove.lcd.sh1107g import JHD1802
def main():
# Grove - 16x2 LCD(White on Blue) connected to I2C port
lcd = JHD1802()
# Grove - Moisture Sensor connected to port A0
sensor = GroveMoistureSensor(0)
# Grove - Buzzer connected to port PWM
buzzer = upmBuzzer.Buzzer(getGpioLookup('GPIO12'))
while True:
mois = sensor.moisture
if 0 <= mois and mois < 300:
level = 'dry'
elif 300 <= mois and mois < 600:
level = 'moist'
else:
level = 'wet'
buzzer.playSound(upmBuzzer.BUZZER_DO, 200000)
print('moisture: {}, {}'.format(mois, level))
lcd.setCursor(0, 0)
lcd.write('moisture: {0:>6}'.format(mois))
lcd.setCursor(1, 0)
lcd.write('{0:>16}'.format(level))
time.sleep(1)
if __name__ == '__main__':
main()
Traceback (most recent call last):
File "./msensor.py", line 40, in <module>
main()
Maar ik krijg deze Error
File "./msensor.py", line 11, in main
lcd = JHD1802()
NameError: global name 'JHD1802' is not defined