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| #!/usr/bin/env python3 | |
| """ | |
| Script to interact with RDM6300 reader simulating an access control system. | |
| The RDM6300 is a EM4100 compatible reader with UART interface (9600, 8N1) | |
| It reads at 125kHZ, datarate is RF/64, encoding manchester. | |
| The output is 8 hex bytes in printable format (2 bytes each) | |
| enclosed between 0x02 and 0x03 bytes. 16 bytes in total: | |
| \02 vv cc cc cc cc hh \03 (no spaces) | |
| vv: version | |
| cc: code | |
| hh: checksum (xor of previous bytes) | |
| Example: | |
| b'\x02170068D28429\x03' | |
| Requires: PySerial | |
| Reinoso G. - Blog Electronicayciencia - 26/01/2020 | |
| """ | |
| import serial | |
| import colorama | |
| import termcolor | |
| from datetime import datetime | |
| from sys import exit | |
| from struct import unpack | |
| from time import sleep | |
| PORT = "COM3" | |
| STAFF = { | |
| 179607433: "Mr. Jiminis", | |
| 6869636: "Mr. Guzman", | |
| 1961262: "Ms. Smith", | |
| 3620985: "Mr. Batman" | |
| } | |
| # Only Batman and Mr Jiminis are allowed in the room | |
| AUTHORIZED = (179607433, 3620985) | |
| def read_id(): | |
| """ | |
| Loop until a valid card is detected. | |
| Need serial_conn global. | |
| Output: | |
| code: code of the card read | |
| Exceptions: | |
| KeyboardInterrupt or SerialException | |
| """ | |
| while True: | |
| serial_conn.reset_input_buffer() | |
| a = serial_conn.read_until(b'\x03') | |
| if len(a) != 14: | |
| continue | |
| (start, version, code, checksum, end) = unpack('b2s8s2sb', a) | |
| if start != 2 or end != 3: | |
| continue | |
| version = int(version, 16) | |
| code = int(code, 16) | |
| checksum = int(checksum, 16) | |
| # we don't check checksum | |
| # print("Version: %02X Code: %08X (%010d)" | |
| # % (version, code, code), end="") | |
| return code | |
| # Main code | |
| colorama.init() | |
| serial_conn = serial.Serial(PORT, 9600, timeout=0.3) | |
| print("Electronicayciencia's facilities Access Control") | |
| while True: | |
| try: | |
| code = read_id() | |
| except: | |
| break | |
| date = datetime.now().strftime("%d/%m/%Y %H:%M:%S") | |
| if code in AUTHORIZED: | |
| access = termcolor.colored(" ACCESS GRANTED ", "green") | |
| else: | |
| access = termcolor.colored(" ACCESS DENIED ", "white", "on_red") | |
| if code in STAFF: | |
| name = STAFF[code] | |
| else: | |
| name = "unknown" | |
| print("%s - Id: %010d - %s - %s" % ( | |
| date, | |
| code, | |
| access, | |
| termcolor.colored(name, "yellow") | |
| )) | |
| try: | |
| sleep(1) | |
| except KeyboardInterrupt: | |
| break |