def __init__(self, data):
self.log = logging.getLogger('airpi.lcdpanel')
self.cols = int(data["cols"])
self.rows = int(data["rows"])
self.delay = float(data["delay"])
self.sl = [0, 1 ,1 ,1] # first line is static others scroll
try:
self.lcd = lcddriver.lcd()
self.lcd.display_string(" Airpi LCD panel ", 2)
self.lcd.display_string(" Init was a Success ", 3)
# setup LcdScroller thread object
data = (u" Airpi Sensor Info. ", u"Temp: Unknown, P: Unknown, RH: Unknown ", u"LL: Unknown, LLl: Unknown, Vol: Unknown ", u"NO2: Unknown, CO: Unknown ")
self.scroller = LcdScroller(self.lcd, self.rows, self.cols, self.delay, self.sl, data)
self.scroller.start()
except Exception as e:
self.log.error("Error initialising LCDpanel: {}".format(e))
raise
else:
self.log.debug("Initialised successfully")
class LCDpanel(output.Output):
requiredData = ["cols", "rows", "delay"]
optionalData = []
lcd = None
def __init__(self, data):
self.log = logging.getLogger('airpi.lcdpanel')
self.cols = int(data["cols"])
self.rows = int(data["rows"])
self.delay = float(data["delay"])
self.sl = [0, 1 ,1 ,1] # first line is static others scroll
try:
self.lcd = lcddriver.lcd()
self.lcd.display_string(" Airpi LCD panel ", 2)
self.lcd.display_string(" Init was a Success ", 3)
# setup LcdScroller thread object
data = (u" Airpi Sensor Info. ", u"Temp: Unknown, P: Unknown, RH: Unknown ", u"LL: Unknown, LLl: Unknown, Vol: Unknown ", u"NO2: Unknown, CO: Unknown ")
self.scroller = LcdScroller(self.lcd, self.rows, self.cols, self.delay, self.sl, data)
self.scroller.start()
except Exception as e:
self.log.error("Error initialising LCDpanel: {}".format(e))
raise
else:
self.log.debug("Initialised successfully")
def outputData(self, dataPoints):
try:
line1_str = line2_str = line3_str = line4_str = ""
bl = 0
for i in dataPoints:
self.log.debug(i)
disp_str = ""
# handle GPS data when available
if i["type"] == "Location":
disp_str = u"Location: Unknown; "
if i["utc"] != None:
# make line 1 scroll
self.sl[0] = 1
if i["lat"] > float(0.0):
if i["m/s"] != None:
disp_str = u"{}-{}-{} {} UTC; {:.4f}{},{:.4f}{}; {:.1f} ft; {:.1f} mph; ".format(i["utc"][8:10], i["utc"][5:7], i["utc"][2:4], i["utc"][11:16], i["lat"], ds, i["lon"], ds, i["ele"] * ft_mult, i["m/s"] * mph_mult)
else:
disp_str = u"DT: {} {}; Posn: {:.4f}{}, {:.4f}{}; Alt: {} m; ".format(i["utc"][:10], i["utc"][11:19], i["lat"], ds, i["lon"], ds, i["ele"])
elif i["type"] == "Temperature":
disp_str = u"{}: {:.1f}{}{}; ".format(abbr[i["type"]], i["value"], ds, i["symbol"])
else:
disp_str = u"{}: {:.2f} {}; ".format(abbr[i["type"]], i["value"], i["symbol"])
# add to correct line string
if i["type"] == "Location":
line1_str += disp_str
elif i["type"] == "Temperature":
line2_str += disp_str
elif i["type"] == "Pressure":
line2_str += disp_str
elif i["type"] == "Relative_Humidity":
line2_str += disp_str
elif i["type"] == "Light_Level":
line3_str += disp_str
elif i["type"] == "Light_Level_Lux":
line3_str += disp_str
if i["value"] < float(10.0):
# enable backlight at low light levels
bl = 1
elif i["type"] == "Volume":
line3_str += disp_str
else:
line4_str += disp_str
# update LcdScroller thread data
self.scroller.updData(self.sl, (line1_str, line2_str, line3_str, line4_str), bl)
except Exception as e:
self.log.error("Error displaying string on LCD: {}".format(e))
raise
else:
return True
def clearLCD(self):
print("Stopping LcdScroller thread")
self.log.info("Stopping LcdScroller thread {}".format(self.scroller.isAlive()))
if self.scroller.isAlive():
self.scroller.stopScroller()
self.scroller.join()
print("Clearing LCD panel & turning off backlight")
self.log.info("Clearing LCD panel & turning off backlight")
self.lcd.clear(bl=0)
