We are trying to insert values from a TCP stream into an RRDTool database. Even though the first value is accepted by the RRDTool, the next one is not. We get the error: convert to float not complete: tail Our client code is:
#!/usr/bin/env python
import socket
import Adafruit_BBIO.GPIO as GPIO
import Adafruit_BBIO.ADC as ADC
import time
import datetime
TCP_IP = '192.168.1.138'
TCP_PORT = 5005
BUFFER_SIZE = 1024
sensor_pin='P9_40'
light_pin='p8_10'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))
ADC.setup()
GPIO.setup(light_pin, GPIO.OUT)
while True:
reading = ADC.read(sensor_pin)
millivolts = reading * 1800
data = (millivolts-500)/10
data = round(data,2)
MESSAGE = str(data)
s.send(MESSAGE)
time.sleep(10)
s.close()
The Server side is like this(only the tcp connection part)
while True:
input=conn.recv(BUFFER_SIZE)
if input:
input = input.replace('\r\n','')
input = input.rstrip('\r|\n')
temp1=float(input)
x=datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')
y=input
stream.write(dict(x=x, y=y))
rrdtool.update('database/temp.rrd','N:input')
print temp1
conn.close()
stream.close()
We also tried converting the input value into a float (temp1) and entering that into the database but that didn't work as well. (same error)
We suspect it has something to do with a carriage return or line feed, but weren't able to find the answer so far.
Any tips are more then welcome !
