"Program Exit. \n") exit(-1) while True: try: setup() #Read value from DHT22 humi, temp = DHT22_data() #test below lines humi = '%.2f' % humi temp = '%.2f' % temp print(humi, temp) #Read value from LDR LDRvalue = adc.analogRead(0) # read the ADC value of channel 0 LDRvoltage = LDRvalue / 255.0 * 3.3 # calculate the voltage value print('LDR ADC Value : %d, LDR Voltage : %.2f' % (LDRvalue, LDRvoltage)) #Read value from Moisture Sensor MSvalue = adc.analogRead(1) # read the ADC value of channel 1 MSvoltage = MSvalue / 255.0 * 3.3 # calculate the voltage value print('ADC Value : %d, Voltage : %.2f' % (MSvalue, MSvoltage)) # If Reading is valid """ if isinstance(humi, float) and isinstance(temp, float) and isinstance(temp, float) and isinstance(temp, float): # Formatting to two decimal places humi = '%.2f' % humi temp = '%.2f' % temp print(temp, humi) # Sending the data to thingspeak
else: print( "No correct I2C address found, \n" "Please use command 'i2cdetect -y 1' to check the I2C address! \n" "Program Exit. \n") exit(-1) setup() while True: try: if (adc is not None): #Read value from LDR lightValue = adc.analogRead(0) # read the ADC value of channel 0 LDRvoltage = lightValue / 255.0 * 3.3 # calculate the voltage value LDRvoltage = '%.2f' % LDRvoltage #Read value from Moisture Sensor moistureValue = adc.analogRead( 1) # read the ADC value of channel 1 MSvoltage = moistureValue / 255.0 * 3.3 # calculate the voltage value MSvoltage = '%.2f' % MSvoltage print("Moisture value:", moistureValue, "LDR value:", lightValue) else: print('Error') # DHT22 requires 2 seconds to give a reading, so make sure to add delay of above 2 seconds. sleep(0.1)