mhutchins

Controlers:
controllerid, name
X00001, gate
X00002, folly
X00003, shed
X00004, passage
X00005, f-door

Cards:
unit_id, cardid, owner, readers[]

mhutchins

#!/usr/bin/python3
# Note: This code should also work with python 2

def crc16modbus(data, poly=0xA001, crc=0xFFFF):
    data = bytearray(data)

    for b in data:
        crc ^= (0xFF & b)
        for _ in range(0, 8):
            if (crc & 0x0001):

mhutchins

#include <stdio.h>
#include <stdint.h>

uint16_t crc16modbus(uint8_t *data, uint16_t len)
{
	uint16_t poly = 0xA001;
	uint16_t crc = 0xffff;
	uint8_t *ptr = data;

	while(len--)

mhutchins

#!/usr/bin/python
mode="SERVER"
#mode="CLIENT"

port = 54545
bufferSize = 1024

import socket
import select

mhutchins

#!/usr/bin/python
mode="SERVER"#mode="CLIENT"
port = 54545bufferSize = 1024
import socketimport select
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
if mode == "SERVER" :    s.sendto('This is a test', ('255.255.255.255', port))else:    s.bind(('<broadcast>', port))    s.setblocking(0)    while True:        result=select.select([s],[],[])        msg = result[0][0].recv(bufferSize)        print msg

mhutchins

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