Upcycled Clock - Showing IP address and temperature on Grove LCD

I finally received my package   a couple of days back on Thursday, after the package made couple of trips from Chicago to Los Angeles and back again. A big thanks to rscasny for helping me out, and quickly re-sending package.

As part of today's blog post I have managed to setup connect the Intel Edison on the Arduino base board to show the IP address assigned to the Intel Edison by my WiFi router and also show the temperature from the Grove temperature on the RGB LCD screen which came as part of the Grove Arduino sensor kit.

I started by downloading and  flashing latest Yacto image on the Intel Edison use the guide on intels website , which you can find at - https://software.intel.com/en-us/assembling-intel-edison-board-with-arduino-expansion-board. For flashing firmware I used Ubuntu 16.04 and you can find the documentation with the steps at - https://software.intel.com/en-us/flashing-firmware-on-your-intel-edison-board-linux  . Here are some screenshots of the flashing process

From the terminal on you computer ssh into the Edison using

ssh root@ipaddress

And then run the following commands on the edison to get the latest version of MRAA library and UPM

echo "src mraa-upm http://iotdk.intel.com/repos/3.5/intelgalactic" > /etc/opkg/mraa-upm.conf

opkg update

opkg install mraa

opkg install upm

Now, connect grove shield to the Arduino breakout board and then connect the following grove sensors using the connectors

• RGB LCD to one of the I2C
• Pot to the A0
• and Temperature sensor to A1

Using you favorite FTP tool, upload the python code to below to the Edison and run the python program

python checkIPaddressTempLCD.py

Now use the Pot to the check the temperature and IP address. And a big thanks to Element14 and the sponsors Intel.

Here is the python code to run after following the steps above

#!/usr/bin/python
# Create by Carmelito to show the IP address and temperature on the grove LCD based on
# Grove RGB LCD https://github.com/intel-iot-devkit/upm/blob/master/examples/python/jhd1313m1-lcd.py
# Grove rotary https://github.com/intel-iot-devkit/upm/blob/master/examples/python/groverotary.py
# Grove temp https://github.com/intel-iot-devkit/upm/blob/master/examples/python/grovetemp.py
# and for the ip address http://code.activestate.com/recipes/439094-get-the-ip-address-associated-with-a-network-inter/

from upm import pyupm_jhd1313m1 as lcd
from time import sleep
from upm import pyupm_grove as grove
import socket
import fcntl
import struct

def get_ip_address(ifname):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    return socket.inet_ntoa(fcntl.ioctl(
        s.fileno(),
        0x8915,  # SIOCGIFADDR
        struct.pack('256s', ifname[:15])
    )[20:24])


def main():
    #POT connected to AIO pin 0
    knob = grove.GroveRotary(0)
    #Temperature sensor connected to AIO pin 1
    temp = grove.GroveTemp(1)
    # Initialize Jhd1313m1 at 0x3E (LCD_ADDRESS) and 0x62 (RGB_ADDRESS)
    myLcd = lcd.Jhd1313m1(0, 0x3E, 0x62)
    # Loop indefinitely
    while True:
        # Read values
        abs = knob.abs_value()
        print("Abs values: " + str(abs))
        sleep(1)
        if abs <100:
            myLcd.clear()
            # Set background color to Blue
            myLcd.setColor(0, 0, 255) #RGB
            # Zero the cursor
            myLcd.setCursor(0,0)
            # Print the IP address for wlan0
            ip = get_ip_address('wlan0')
            myLcd.write("IP " + ip)
            sleep(1)
        elif abs >100 and abs <500:
            #Getting grove temperature value
            print(temp.name())
            for i in range(0, 10):
                celsius = temp.value()
                fahrenheit = celsius * 9.0/5.0 + 32.0;
                print("%d degrees Celsius, or %d degrees Fahrenheit" \
                         % (celsius, fahrenheit))
                sleep(1)
            myLcd.clear()
            myLcd.setColor(255, 0, 0) #RGB
            myLcd.setCursor(0,0)
            myLcd.write("Temp "+str(fahrenheit) + " F" )
        else:
            #Printing a big thank you!
            myLcd.clear()
            myLcd.setColor(0, 255, 0) #RGB
            myLcd.setCursor(0,0)
            myLcd.write("Thanks element14")
            myLcd.setCursor(1,0)
            myLcd.write("and Intel")
            sleep(1)

if __name__ == '__main__':
    main()