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sensor_lacrossTX23.py
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sensor_lacrossTX23.py
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###########################################################################
# Sint Wind PI
# Copyright 2012 by Tonino Tarsi <[email protected]>
#
# Please refer to the LICENSE file for conditions
# Visit http://www.vololiberomontecucco.it
#
##########################################################################
"""This module defines the base sensor Nevio ."""
import threading
import time
import config
import random
import datetime
import sqlite3
from TTLib import *
import sys
import subprocess
import globalvars
import meteodata
import sensor_thread
import sensor
import RPi.GPIO as GPIO
import TTLib
import thread
from ctypes import *
import intervalmap
def get_wind_dir_text():
"""Return an array to convert wind direction integer to a string."""
return ['N','NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW']
class Sensor_LacrossTX23(sensor.Sensor):
# Connections PIN - USING BCM numbering convention !!!!!!
def __init__(self,cfg ):
threading.Thread.__init__(self)
sensor.Sensor.__init__(self,cfg )
self.libTX23 = cdll.LoadLibrary('./TX23/libTX23.so')
if ( self.libTX23.init() != 1 ):
log("Error initializing TX23 library.Try to continue")
self.cfg = cfg
self.bTimerRun = 0
self.rb_WindSpeed = TTLib.RingBuffer(self.cfg.number_of_measure_for_wind_average_gust_calculation)
self.currentiDir = None
self.active = True
self.start()
def run(self):
sleeptime = self.cfg.windmeasureinterval - self.__MEASURETIME
if sleeptime < 0 : sleeptime = 0
iDir = c_int()
iSpeed = c_int()
while self.active :
self.libTX23.getData(byref(iDir), byref(iSpeed),0)
self.currentiDir = iDir
#TTLib.log( "currentWind : " + str(currentWind))
currentSpeed = iSpeed * self.cfg.windspeed_gain + self.cfg.windspeed_offset
self.rb_WindSpeed.append(currentSpeed)
time.sleep(sleeptime)
def Detect(self):
return True
def SetTimer(self):
self.bTimerRun = 0
def GetCurretWindSpeedAndDir(self):
"""Get wind speed pooling __PIN_A ( may be an interrupt version later )."""
iDir = c_int()
iSpeed = c_int()
while self.active :
self.libTX23.getData(byref(iDir), byref(iSpeed),0)
self.currentiDir = iDir
#TTLib.log( "currentWind : " + str(currentWind))
currentSpeed = iSpeed * self.cfg.windspeed_gain + self.cfg.windspeed_offset
self.rb_WindSpeed.append(currentSpeed)
return currentSpeed,self.currentiDir
def GetData(self):
seconds = datetime.datetime.now().second
if ( seconds < 30 ):
time.sleep(30-seconds)
else:
time.sleep(90-seconds)
wind_ave,wind_gust = self.rb_WindSpeed.getMeanMax()
if ( wind_ave != None) :
wind_dir = self.currentiDir * 22.5
wind_dir_code = get_wind_dir_text()[self.currentiDir]
globalvars.meteo_data.status = 0
globalvars.meteo_data.last_measure_time = datetime.datetime.now()
globalvars.meteo_data.idx = globalvars.meteo_data.last_measure_time
globalvars.meteo_data.wind_ave = wind_ave
globalvars.meteo_data.wind_gust = wind_gust
globalvars.meteo_data.wind_dir = wind_dir
globalvars.meteo_data.wind_dir_code = wind_dir_code
if ( self.cfg.use_tmp36 ):
ch1 = self.libMCP.read_channel(1)
v1 = ch1 * (3300.0/1024.0)
temp = (v1 - 500.0) / 10.0
globalvars.meteo_data.temp_out = temp
sensor.Sensor.GetData(self)
if __name__ == '__main__':
configfile = 'swpi.cfg'
cfg = config.config(configfile)
ss = Sensor_LacrossTX23(cfg)
ss.active = False
while ( 1 ) :
speed, dir = ss.GetCurretWindSpeedAndDir()
temp = None
if ( cfg.use_tmp36 ):
ch1 = ss.libMCP.read_channel(1)
v1 = ch1 * (3300.0/1024.0)
temp = (v1 - 500.0) / 10.0
print "Speed:",speed,"Dir:",dir,"Temp;",temp
# ss.GetData()
# log( "Meteo Data - D : " + globalvars.meteo_data.wind_dir_code + " S : " + str(globalvars.meteo_data.wind_ave) + + " G : " + str(globalvars.meteo_data.wind_gust) )
# #print logData("http://localhost/swpi_logger.php")