Added bytesize,parity,stopbits parameters

Author: ChrisEAlfred

README.md

@@ -189,6 +189,9 @@ stream_modules:
     module: streamserial
     device: /dev/ttyS0
     baud: 115200
+    bytesize: 8 # Number of data bits in word. Can be: 5,6,7,8
+    parity: none # Parity can be one of none,odd,even,mark,space
+    stopbits: 1 # Number of stop bits. Can be: 1,1.5,2
     cleanup: no  # This optional boolean value sets whether the module's `cleanup()` function will be called when the software exits.
 
 stream_reads:

pi_mqtt_gpio/modules/streamserial.py

@@ -1,16 +1,41 @@
 from __future__ import print_function
 
 from pi_mqtt_gpio.modules import GenericStream
+import serial
 from serial import Serial
 
 REQUIREMENTS = ("serial",)
 CONFIG_SCHEMA = {
     "device": {"type": "string", "required": True, "empty": False},
     "baud": {"type": "integer", "required": True, "empty": False},
+    "bytesize": {"type": "integer", "required": True, "empty": False},
+    "parity": {"type": "string", "required": True, "empty": False},
+    "stopbits": {"type": "float", "required": True, "empty": False},
 }
 
 PORTS_USED = {}
 
+BYTESIZE = {
+    5: serial.FIVEBITS,
+    6: serial.SIXBITS,
+    7: serial.SEVENBITS,
+    8: serial.EIGHTBITS
+}
+
+PARITY = {
+    "none": serial.PARITY_NONE,
+    "odd": serial.PARITY_ODD,
+    "even": serial.PARITY_EVEN,
+    "mark": serial.PARITY_MARK,
+    "space": serial.PARITY_SPACE
+}
+
+STOPBITS = {
+    1: serial.STOPBITS_ONE,
+    1.5: serial.STOPBITS_ONE_POINT_FIVE,
+    2: serial.STOPBITS_TWO
+}
+
 class Stream(GenericStream):
     """
     Implementation of stream class for outputting to STDIO.
@@ -20,7 +45,19 @@ def __init__(self, config):
         global PORTS_USED
         #print("__init__(config=%r)" % config)
         if not config['device'] in PORTS_USED:
-            self.ser = Serial(config['device'], config['baud'], timeout=20)
+
+            if not config['bytesize'] in BYTESIZE.keys():
+                raise Exception("bytesize not one of: " + str(BYTESIZE.keys()))
+            if not config['parity'] in PARITY.keys():
+                raise Exception("parity not one of:" + str(PARITY.keys()))
+            if not config['stopbits'] in STOPBITS.keys():
+                raise Exception("stopbits not one of: " + str(STOPBITS.keys()))
+
+            bytesize = BYTESIZE[config['bytesize']]
+            parity = PARITY[config['parity']]
+            stopbits = STOPBITS[config['stopbits']]
+
+            self.ser = Serial(port=config['device'], baudrate=config['baud'], bytesize=bytesize, parity=parity, stopbits=stopbits, timeout=20)
             self.ser.flushInput()
             PORTS_USED[config['device']] = self.ser
         else: