nes-proj/project/product/product.c

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/*
* Copyright (c) 2017, RISE SICS.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
#include "net/netstack.h"
#include "net/nullnet/nullnet.h"
#include "os/net/linkaddr.h"
#include "os/dev/button-hal.h"
#include "os/dev/leds.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sys/log.h"
#include "sys/clock.h"
#include "contiki.h"
#define LOG_MODULE "App"
#define LOG_LEVEL LOG_LEVEL_INFO
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// !! TO INIT WITH CART MAC ADDRESS !! //
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static linkaddr_t dest_addr = {{0x00, 0x12, 0x4b, 0x00, 0x0f, 0x82, 0x18, 0x04}};
struct Product {
char name[20];
char expiration_date[8]; // gg/mm/yy
double price;
};
struct Product product_list[] = {
{ "latte" , "21/12/19", 1.05 },
{ "pane" , "12/05/19", 3.25 },
{ "cioccolato", "05/05/21", 2.50 }
};
PROCESS(product_proc, "product random generator");
AUTOSTART_PROCESSES(&product_proc);
void scan_product(struct Product *p){
nullnet_buf = (uint8_t *)p;
nullnet_len = sizeof(*p);
NETSTACK_NETWORK.output(&dest_addr);
LOG_INFO("Product %s scanned from ", p->name);
LOG_INFO_LLADDR(&dest_addr);
LOG_INFO_("\n");
}
PROCESS_THREAD(product_proc, ev, data){
PROCESS_BEGIN();
// init random number generator
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unsigned int magic_seed = 12; // oooh :o
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srand(magic_seed);
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while(1) {
PROCESS_YIELD();
if (ev == button_hal_press_event){
// product generation
unsigned int index = rand() % 3;
scan_product(&product_list[index]);
}
}
PROCESS_END();
}