first commit

Norberg · Norberg · commit 8186d93a3cc2 · 2009-07-12T20:35:56.000+02:00
diff --git a/getTemp.py b/getTemp.py
@@ -0,0 +1,28 @@
+import serial
+
+def getTemp():
+	ser = serial.Serial(port="/dev/ttyUSB0", baudrate=9600, timeout=10)
+	ser.open()
+	ser.flushInput()
+	value = ser.read(51)
+	ser.flush()
+	ser.close()
+	#conversation done acording to maxim-ic documentation for DS18S20
+	TEMP_LSB = int(value.split(' ')[9], 16)
+	TEMP_MSB = int(value.split(' ')[10], 16)
+	COUNT_REMAIN = int(value.split(' ')[15], 16)
+	if (TEMP_MSB == 0):
+		#positve temerature
+		TEMP_READ = TEMP_LSB*0.5 
+	else:
+		#negative temperature
+		TEMP_READ = (TEMP_LSB-256)*0.5 
+	#get extended temperature
+	TEMPERATURE = TEMP_READ - 0.25 * ((16.0 - COUNT_REMAIN)/ 16.0)
+	return round(TEMPERATURE, 1)
+
+def main():
+	print getTemp(), "C"
+
+if __name__ == "__main__":
+	main()
diff --git a/temp.plot b/temp.plot
@@ -0,0 +1,15 @@
+#!/usr/bin/env gnuplot
+set title "Temperature"
+set xlabel "Datetime"
+set ylabel "Celcius"
+
+set terminal png
+set output "temp.png"
+set datafile separator "|"
+set style data linespoint
+set xdata time
+set timefmt "%y-%m-%d %H:%M"
+set xrange ["2008-07-12 00:00":"2009-07-13 00:00"]
+set format x "%y-%m-%d %H:%M"
+#set timefmt "%y-%m-%d"
+plot "< sqlite3 temp.db 'select date, temp from temp'" using 1:2 title "test"
diff --git a/updateTemp.py b/updateTemp.py
@@ -0,0 +1,16 @@
+import sqlite3, sys, datetime
+import getTemp
+
+try:
+	temp = getTemp.getTemp()
+except:
+	print "not able to get temp"
+	sys.exit()
+
+conn = sqlite3.connect("/home/simon/tempLog/temp.db")
+c = conn.cursor()
+date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
+sensor = "test"
+c.execute("insert into temp values(?, ?, ?)",[date, temp, sensor])
+conn.commit();
+c.close()
