def _recieve_data_loop(self, log_path, input_list, logging_level):
"""
Reads serial input, creates data dicts and adds them to input queue.
"""
name = "recieve_data_loop"
log_path = log_path + "/processes/serial/%s_%d.log" % (name, os.getpid())
logger = pdc_utils.config_logger(name, log_path, logging_level=logging_level)
logger.info("Initiated send data loop")
data_array = []
string = ""
receiving_data = False
while True:
logger.debug("Waiting for new bytes...")
# Reads 1 byte from serial
readed_data = self.device.read(1)
readed_data = readed_data.decode()
# If byte is Initial Order Chart or it is after Initial Order Chart...
if(readed_data == cfg.INITIALCHAR or receiving_data == True):
logger.debug("readed_data: %s" % readed_data)
# Receiving order string for serial.
receiving_data = True
# Adds byte to array.
data_array.append(readed_data)
# If byte is Final Order Chart...
if(readed_data == cfg.STOPCHAR):
# No more bytes for current order string.
receiving_data = False
# Creates a string from byte array
string = ''.join(data_array)
# Resets byte array for new incoming orders.
data_array = []
logger.info("From device string: %s" % string)
input_list.append(self._order_string_to_dict(string))
def _send_data_loop(self, log_path, output_queue, logging_level):
"""
Reads orders from output queue and send them to serial.
"""
name = "send_data_loop"
log_path = log_path + "/processes/serial/%s_%d.log" % (name, os.getpid())
logger = pdc_utils.config_logger(name, log_path, logging_level=logging_level)
logger.info("Initiated send data loop");
while True:
logger.debug("Waiting for new output order...")
order = output_queue.get()
to_device_string = "%s%d%s%d%s%d%s%s%s" % (cfg.INITIALCHAR, order["id"], cfg.IDENTIFIERCHART, order["device"], cfg.DEFUSEPARATOR, order["function"], cfg.DEFUSEPARATOR, order["data"], cfg.STOPCHAR)
logger.info("To device string: %s" % to_device_string);
self.device.write(to_device_string.encode())
def __init__(self, route_str='/dev/ttyACM0', baud_rate=9600, timeout=10,
max_connection_attempts=5, time_between_attempts=5, log_path="./logs",
logging_level='debug'):
"""
Object instantiation method.
"""
self._log_path = log_path
self._log_file = "%s/%s.log" % (self._log_path, __name__)
self._logging_level = logging_level
self._logger = pdc_utils.config_logger(__name__, self._log_file, logging_level=self._logging_level)
self._route_str = route_str
self._baud_rate = baud_rate
self._timeout = timeout
self._max_connection_attempts = max_connection_attempts
self._time_between_attempts = time_between_attempts
self._master_id = 0;
self._ping_function_number = 0;
self._state = 'INSTANTIATED'
self._logger.debug("%s object instantiation" % __name__)
