ThingSpeak sample

main.py

#!/usr/bin/python

import smbus
import time
import sys
import requests
from datetime import datetime

api_key=''

bus = smbus.SMBus(1)
lm75b_address = 0x49
tmp102_address = 0x48

def get_temp_from_tmp102():
    data = bus.read_i2c_block_data(tmp102_address, 0)
    msb = data[0]
    lsb = data[1]
    temp= (((msb << 8) | lsb) >> 4) * 0.0625      #printing the temperature value in Celsius.
    return temp

def get_temp_lmp75b():
    block = bus.read_i2c_block_data(lm75b_address, 0x00, 2)
    val = block[0] << 8
    val = val | block[1]
    if(val >= 0x7fff):
        val = val - 0xffff
    result = ((val >>5) * 0.125)
    return result

while True:
    tmp102=get_temp_from_tmp102()
    lmp75b=get_temp_lmp75b()
    now=datetime.now().strftime('%Y-%m-%d %H:%M:%S')

    requests.get('http://api.thingspeak.com/update?api_key=%s&field1=%s&field2=%s' % (api_key, tmp102, lmp75b))

    print("%s TMP102=%+6.2f LMP75B=%+6.2f  " % (now, tmp102, lmp75b))
    sys.stdout.flush()
    time.sleep(60)