nuttx-apps/examples/wiegand/wiegand.c

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/****************************************************************************
* apps/examples/wiegand/wiegand.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <inttypes.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <nuttx/wiegand/wiegand.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Wiegand
****************************************************************************/
int main(int argc, FAR char *argv[])
{
int fd;
int ret;
struct wiegand_data_s data;
fd = open ("/dev/wiega0", O_RDONLY);
if (fd < 0)
{
printf("Erro: Failed to open \n");
return -1;
}
printf("Wiegand app is running\n");
while (1)
{
ret = read(fd, &data, sizeof(data));
if (ret > 0)
{
if (data.status == WIEGAND_SUCCESS)
{
printf("ABA Code: %d\n", data.aba_code);
printf("FC: %04x \n", data.facility_code);
printf("ID: %06x\n", data.id);
break;
}
}
sleep(1);
}
close (fd);
return 0;
}