initial commit

.gitignore

+desktop.ini
+.idea
\ No newline at end of file

serial_client.py

+import serial
+import json
+from binascii import b2a_hex
+
+# create Serial object
+DEVICE = 'COM7'
+ser = serial.Serial(DEVICE)
+
+# Data to send to server (change this)
+tx_obj = [8, 10, -12, 100, 2]
+print("Sending %s to server" % type(tx_obj))
+
+# L3: convert Python object into string
+tx_str = json.dumps(tx_obj)
+print("\tjson: %s" % tx_str)
+
+# L2: convert string into binary data
+tx_data = (tx_str + '\n').encode('ascii')
+print("\tbinary: %r" % b2a_hex(tx_data))
+
+# L1: tell operating system to send data
+nbytes = ser.write(tx_data)
+ser.flush()
+
+# -------- SERVER PROCESSES MESSAGE --------
+print("waiting...")
+
+# L0: hardware listens for voltage changes on RX line
+
+# L1: operating system delivers binary data
+rx_data = ser.readline()
+print("\tbinary: %r" % b2a_hex(rx_data))
+
+# L2: convert binary data into a string
+rx_str = rx_data.decode('ascii')
+print("\tjson: %s" % rx_str.rstrip())
+
+# L3: convert string into Python object
+rx_obj = json.loads(rx_str)
+print("Received %s from server" % type(rx_obj))
+
+# display result (is it correct?)
+print("Max: %d | Min %d" % (rx_obj['max'], rx_obj['min']))
+
+# close connection
+ser.close()
\ No newline at end of file

serial_client_min.py

+import serial
+import json
+
+DEVICE = 'COM7'
+ser = serial.Serial(DEVICE)
+
+tx_obj = [8, 10, -12, 100, 2]
+print(tx_obj)
+tx_str = json.dumps(tx_obj)
+tx_data = (tx_str + '\n').encode('ascii')
+ser.write(tx_data)
+ser.flush()
+
+
+rx_data = ser.readline()
+rx_str = rx_data.decode('ascii')
+rx_obj = json.loads(rx_str)
+print("Max: %d | Min %d" % (rx_obj['max'], rx_obj['min']))
+
+ser.close()

serial_server.py

+import serial
+import json
+from binascii import b2a_hex
+
+# create Serial object
+DEVICE = 'COM6'
+ser = serial.Serial(DEVICE)
+print("waiting...")
+# L0: hardware listens for voltage changes on RX line
+
+# L1: operating system delivers binary data
+rx_data = ser.readline()
+print("\tbinary %r" % b2a_hex(rx_data))
+
+# L2: convert binary data into a string
+rx_str = rx_data.decode('ascii')
+print("\tjson: %s" % rx_str.rstrip())
+
+# L3: convert string into Python data structure
+rx_obj = json.loads(rx_str)
+print("Received %s from client" % type(rx_obj))
+
+tx_obj = {'max': max(rx_obj),
+           'min': min(rx_obj)}
+
+input("Press [enter] to send response")
+print("Sending %s to client" % type(tx_obj))
+
+# L3: convert Python data structure into string
+tx_str = json.dumps(tx_obj)
+print("\tjson: %s" % tx_obj)
+
+# L2: convert string into binary data
+tx_data = (tx_str + '\n').encode('ascii')
+print("\tbinary: %r" % b2a_hex(tx_data))
+
+# L1: tell operating system to send data
+ser.write(tx_data)
+ser.flush()
+
+# L0: serial hardware produces voltage waveform on TX line
+
+# close connection
+ser.close()

serial_server_min.py

+import serial
+import json
+
+DEVICE = 'COM6'
+ser = serial.Serial(DEVICE)
+
+print("waiting...")
+
+rx_data = ser.readline()
+rx_str = rx_data.decode('ascii')
+rx_obj = json.loads(rx_str)
+
+tx_obj = {'max': max(rx_obj), 'min': min(rx_obj)}
+
+tx_str = json.dumps(tx_obj)
+tx_data = (tx_str + '\n').encode('ascii')
+ser.write(tx_data)
+ser.flush()
+
+ser.close()