#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 #include #include #include "sys/log.h" #include "sys/clock.h" #include "contiki.h" #include "../common/product.h" #include "../common/supermarket_net.h" #define LOG_MODULE "App" #define LOG_LEVEL LOG_LEVEL_INFO /* Hardcoded MAC Address for cart */ /* This is used only to emulate the RFID tag */ static linkaddr_t dest_addr = {{0x00, 0x12, 0x4b, 0x00, 0x0f, 0x82, 0x00, 0x04}}; product_t product_list[] = { { 1, "21/12/19", 105 }, { 2, "12/05/19", 325 }, { 3, "05/05/21", 250 } }; PROCESS(product_proc, "product random generator"); AUTOSTART_PROCESSES(&product_proc); void scan_product(product_t* p){ item_msg m; m.msg_type = ITEM_MSG; memcpy(&m.p, p, sizeof(*p)); nullnet_buf = (uint8_t*)&m; nullnet_len = sizeof(m); NETSTACK_NETWORK.output(&dest_addr); LOG_INFO("Product id [%d, %d] scanned from ", (int)p->product_id, (int)p->price); LOG_INFO_LLADDR(&dest_addr); LOG_INFO_("\n"); } PROCESS_THREAD(product_proc, ev, data){ PROCESS_BEGIN(); // init random number generator unsigned int magic_seed = 12; // oooh :o srand(magic_seed); while(1) { PROCESS_YIELD(); if (ev == button_hal_press_event){ // product generation unsigned int index = rand() % 3; scan_product(&product_list[index]); } } PROCESS_END(); }