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constr_params.py
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constr_params.py
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import config
import supDB
import httpReq
import UART
import time
import logging
import ctypes
import csv
id = config.RPI_ID()
#id = 1
logger = logging.getLogger(__name__)
logger.setLevel(config.CONSTR_PARAMS_LOG_LEVEL)
formatter = logging.Formatter('%(name)s:%(levelname)s:%(asctime)s:%(message)s')
file_handler = logging.FileHandler('log_files/constr_params.log')
file_handler.setFormatter(formatter)
logger.addHandler(file_handler)
def update_existing_keys(dictionary, new_dictionary):
for key in new_dictionary.iterkeys():
if dictionary.has_key(key):
dictionary[key] = new_dictionary[key]
class GlobalVarMGR(object):
def __init__(self):
self.tracker_params = dict()
for key in config.d.itervalues():
self.tracker_params[key] = ''
self.tracker_params['cpu_temp'] = ''
self.tracker_params['wind_ok'] = 'YES'
self.server_params = dict()
for key in config.SERVER_PARAMS:
self.server_params[key] = ''
self.tracer = config.IS_WIND_TRACER(id)
self.timings = {
'last_http_req':time.time(),
'last_db_update':time.time(),
'last_tracker_poll':time.time(),
'last_wind_poll':time.time(),
'last_tracker_update':time.time(),
'last_wifi_reset':time.time()
}
self.bools = {
'db_updated':True,
'http_polled':True,
'tracker_polled':True,
'wind_polled':True,
'tracker_updated':True
}
if self.tracer == True:
self.tracker_params['avg_wind_speed'] = 0.0
self.tracker_params['avg_wind_speed2'] = 0.0
self.wind_speed_array = []
self.wind_speed_array2 = []
self.wind_data = 'log_files/wind_measurements.csv'
self.wind_data_first_write = None
# try:
# tablefile = open(self.wind_data,'w')
# fieldnames = ['inst_wind_speed','avg_wind_speed','avg_wind_speed2','time']
# writer = csv.DictWriter(tablefile,fieldnames = fieldnames)
# writer.writeheader()
# except Exception as err:
# logger.exception(err)
# finally:
# tablefile.close()
else:
self.polled_wind_speed = 0.0
def make_db_params(self,state):
values = dict()
if state != "TRACKING":
values['current_position_H'] = self.tracker_params[config.d['Angle_A']]
values['current_position_V'] = self.tracker_params[config.d['Angle_B']]
else:
values['current_position_H'] = self.tracker_params[61]
values['current_position_V'] = self.tracker_params[62]
values['target_position_H'] = self.server_params['target_position_H']
values['target_position_V'] = self.server_params['target_position_V']
values['cpu_temp'] = self.tracker_params['cpu_temp']
values['wind_ok'] = self.tracker_params['wind_ok']
if self.tracer == True:
values['wind_speed'] = self.tracker_params['avg_wind_speed']
else:
values['wind_speed'] = self.polled_wind_speed
return values
def update_wind_ok(self,time_limit):
if self.tracer == False:
interm = supDB.db_wind_poll()
if interm['ERROR'] == None and \
time.time() - time.mktime(time.strptime(interm['last_modified'])) \
< 2*time_limit:
self.tracker_params['wind_ok'] = interm['wind_ok']
self.polled_wind_speed = interm['wind_speed']
self.timings['last_wind_poll'] = time.time()
self.bools['wind_polled'] = True
else:
if interm['ERROR'] == None:
if self.bools['wind_polled'] == True:
supDB.update_rpi_status('Tracer DB_inactivity')
logger.warn("The tracer hasn't updated the db "
"for more than %d seconds"%(2*time_limit))
self.bools['wind_polled'] = False
self.tracker_params['wind_ok'] = 'NO'
else:
if self.bools['wind_polled'] == True:
logger.warn("DB down for more than %d sec"%(2*time_limit))
self.bools['wind_polled'] = False
##action on no wind detection
else:
speed_now = config.MAX_INST_WIND_SPEED/2
speed_avg = config.MAX_AVG_WIND_SPEED/2
try:
speed_now = float(self.tracker_params[config.d['WindSpeed']])
speed_avg = float(self.tracker_params['avg_wind_speed'])
except Exception as err:
logger.exception(err)
if speed_now > config.MAX_INST_WIND_SPEED or speed_avg > \
config.MAX_AVG_WIND_SPEED or self.bools['tracker_polled'] == False:
self.tracker_params['wind_ok'] = 'NO'
else:
self.tracker_params['wind_ok'] = 'YES'
if self.bools['tracker_polled'] == True:
self.timings['last_wind_poll'] = time.time()
self.bools['wind_polled'] = True
else:
if time.time() - self.timings['last_wind_poll'] > \
2*time_limit:
if self.bools['wind_polled'] == True:
logger.warn("No wind detection for more than %d sec"%(2*time_limit))
self.bools['wind_polled'] = False
#action on no wind detection
def update_cpu_temp(self):
try:
tempfile = open(config.CPU_TEMP_PATH,'r')
temp = float(tempfile.readline())/1000
self.tracker_params['cpu_temp'] = str(temp)
if time.localtime()[4] % 10 == 0:
logger.info("%2.1fC core temp"%temp)
if temp > config.CPU_MAX_TEMP:
logger.critical("Exceeding max cpu temperature, currently %fC"%temp)
time.sleep(config.OVERTEMP_SLEEP_TIME)
except Exception as err:
logger.exception(err)
finally:
tempfile.close()
def poll_server(self):
interm = httpReq.poll_server_params()
if interm['ERROR'] == None:
self.timings['last_http_req'] = time.time()
self.bools['http_polled'] = True
update_existing_keys(self.server_params,interm)
else:
if time.time() - self.timings['last_http_req'] > config.MAX_SERVERDOWN_TIME:
if self.bools['http_polled'] == True:
logger.warn("Server is inactive for more than %d seconds"%config.MAX_SERVERDOWN_TIME)
supDB.update_rpi_status("server_down")
self.bools['http_polled'] = False
###actions on server/internet failure
def poll_tracker(self,time_limit):
interm = UART.poll_tracker_params()
if interm['ERROR'] == None:
self.timings['last_tracker_poll'] = time.time()
self.bools['tracker_polled'] = True
update_existing_keys(self.tracker_params,interm)
if self.tracer == True:
self.calc_avg_wind_speed()
else:
if self.tracer == True:
if time.time() - self.timings['last_tracker_poll'] > time_limit:
if self.bools['tracker_polled'] == True:
supDB.update_rpi_status('tracer RS458 read failure')
logger.warn("tracer failed to poll the tracker for more than %d sec"%time_limit)
self.bools['tracker_polled'] = False
else:
if time.time() - self.timings['last_tracker_poll'] > config.MAX_UART_DOWN_TIME:
if self.bools['tracker_polled'] == True:
supDB.update_rpi_status('RS458 read failure')
logger.critical("RS485 read failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
self.bools['tracker_polled'] = False
## actions on RS458 read failure
def tracker_update_motors(self):
currentH = self.tracker_params[config.d['Target_Default_H']]
currentV = self.tracker_params[config.d['Target_Default_V']]
targetH = self.server_params['target_position_H']
targetV = self.server_params['target_position_V']
if currentH != targetH:
successH = UART.send_write_command(config.d['Target_Default_H'],targetH)
if currentV != targetV:
successV = UART.send_write_command(config.d['Target_Default_V'],targetV)
if successH['ERROR'] == None and successV['ERROR'] == None:
self.timings['last_tracker_update'] = time.time()
self.bools['tracker_updated'] = True
else:
if time.time() - self.timings['last_tracker_update'] > \
config.MAX_UART_DOWN_TIME:
if self.bools['tracker_updated'] == True:
supDB.update_rpi_status('RS458 write failure')
logger.warn("RS485 write failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
self.bools['tracker_updated'] = 'False'
##action on failing to update the tracking target
def tracker_activate(self):
success = UART.send_write_command(config.d['Mode'],'y')
if success['ERROR'] == None:
self.timings['last_tracker_update'] = time.time()
self.bools['tracker_updated'] = True
else:
if time.time() - self.timings['last_tracker_update'] > \
config.MAX_UART_DOWN_TIME:
if self.bools['tracker_updated'] == True:
supDB.update_rpi_status('RS458 write failure')
logger.warn("RS485 write failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
self.bools['tracker_updated'] = 'False'
def send_to_idle(self):
success1 = UART.send_write_command(config.d['Mode'],'n')
time.sleep(0.5)
success2 = UART.send_write_command(config.d['Angle_A'],config.IDLEA)
time.sleep(0.5)
success3 = UART.send_write_command(config.d['Angle_B'], config.IDLEB)
if success1['ERROR'] == None and success2['ERROR'] == None \
and success3['ERROR'] == None:
self.timings['last_tracker_update'] = time.time()
self.bools['tracker_updated'] = True
else:
if time.time() - self.timings['last_tracker_update'] > config.MAX_UART_DOWN_TIME:
if self.bools['tracker_updated'] == True:
logger.warn("RS485 write failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
supDB.update_rpi_status('RS458 write failure')
self.bools['tracker_updated'] = 'False'
def clear_tracker_errors(self):
success = UART.send_write_command(136,'clear')
if success['ERROR'] == None:
self.timings['last_tracker_update'] = time.time()
self.bools['tracker_updated'] = True
else:
if time.time() - self.timings['last_tracker_update'] > config.MAX_UART_DOWN_TIME:
if self.bools['tracker_updated'] == True:
logger.warn("RS485 write failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
supDB.update_rpi_status('RS458 write failure')
self.bools['tracker_updated'] = 'False'
def set_wind_factor(self):
success = UART.send_write_command(config.d['WindFactor'],config.WIND_MULTIPLIER)
if success['ERROR'] == None:
self.timings['last_tracker_update'] = time.time()
self.bools['tracker_updated'] == True
else:
if time.time() - self.timings['last_tracker_update'] > config.MAX_UART_DOWN_TIME:
if self.bools['tracker_updated'] == True:
logger.warn("RS485 write failure for more than %d seconds"\
%config.MAX_UART_DOWN_TIME)
supDB.update_rpi_status('RS458 write failure')
self.bools['tracker_updated'] = 'False'
def db_update(self,state,time_limit):
new_db_values = self.make_db_params(state)
success = supDB.db_update(new_db_values)
if success['ERROR'] == None:
self.timings['last_db_update'] = time.time()
self.bools['db_updated'] = True
else:
if self.tracer == False:
if time.time() - self.timings['last_db_update'] > \
config.MAX_DB_DOWN_TIME:
if self.bools['db_updated'] == True:
logger.warn("DB update failure for more than %d seconds"\
%config.MAX_DB_DOWN_TIME)
self.bools['db_updated'] = False
else:
if time.time() - self.timings['last_db_update'] > (2*time_limit):
if self.bools['db_updated'] == True:
logger.critical("tracer DB_FAILURE for more than %d secs"\
%(2*time_limit))
self.bools['db_updated'] = False
def reset_wifi(self):
if time.time() - self.timings['last_wifi_reset'] > config.WIFI_RESET_TIMER:
librf = ctypes.cdll.LoadLibrary("./librf/rf_state32.so")
librf.wifi_state(ctypes.c_int(1))
time.sleep(10)
librf.wifi_state(ctypes.c_int(0))
self.timings['last_wifi_reset'] = time.time()
def calc_avg_wind_speed(self):
inst_wind_speed = 0.0
try:
inst_wind_speed += float(self.tracker_params[config.d['WindSpeed']])
except Exception as e:
logger.exception(e)
if len(self.wind_speed_array) >= config.MAX_WIND_ARRAY_LENGTH:
self.wind_speed_array.pop()
if len(self.wind_speed_array2) >= 2*config.MAX_WIND_ARRAY_LENGTH:
self.wind_speed_array2.pop()
self.wind_speed_array.insert(0,inst_wind_speed)
self.wind_speed_array2.insert(0,inst_wind_speed)
sum = 0.0
for velocity in self.wind_speed_array:
sum += velocity
self.tracker_params['avg_wind_speed'] = round(sum/len(self.wind_speed_array),2)
sum = 0.0
for velocity in self.wind_speed_array2:
sum += velocity
self.tracker_params['avg_wind_speed2'] = round(sum/len(self.wind_speed_array2),2)
def set_PCB_time():
t = time.gmtime()
UART.send_write_command(config.d["Seconds"],str(t[5]))
time.sleep(0.5)
UART.send_write_command(config.d["Minutes"],str(t[4]))
time.sleep(0.5)
UART.send_write_command(config.d["Hours"],str(t[3]))
time.sleep(0.5)
UART.send_write_command(config.d["Date"],str(t[2]))
time.sleep(0.5)
UART.send_write_command(config.d["Month"],str(t[1]))
# NO WRITING THE WIND VALUES TO A FILE ANYMORE
# try:
# datafile = open(self.wind_data,'a')
# fieldnames = ['inst_wind_speed','avg_wind_speed','avg_wind_speed2','time']
# writer = csv.DictWriter(datafile,fieldnames = fieldnames)
# if self.wind_data_first_write == None:
# self.wind_data_first_write = int(time.time())
# rowDict = {
# 'inst_wind_speed':inst_wind_speed,
# 'avg_wind_speed':self.tracker_params['avg_wind_speed'],
# 'avg_wind_speed2':self.tracker_params['avg_wind_speed2'],
# 'time':int(time.time())-self.wind_data_first_write
# }
# writer.writerow(rowDict)
# except Exception as err:
# logger.exception(err)
# finally:
# datafile.close()