Example of project

Pagina 1

#include "mbed.h" #include "C12832.h" #include "Sht31.h" #include "NetworkInterface.h" #include "http_request.h" void dump_response(HttpResponse* res) { printf("Status: %d - %s\n", res->get_status_code(), res- >get_status_message().c_str()); printf("Headers:\n"); for (size_t ix = 0; ix < res->get_headers_length(); ix++) { printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str()); } printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str()); } C12832 lcd(SPI_MOSI, SPI_SCK, SPI_MISO, p8, p11); Sht31 sht31(I2C_SDA, I2C_SCL); DigitalOut led1(LED1); DigitalOut led2(LED2); int main() { printf("benvenuti nel progetto di Tecnologie Digitali 2 (modulo reti)\n"); char bodysend[200]; float stored_temp = sht31.readTemperature(); float stored_humidity = sht31.readHumidity(); { NetworkInterface *network = NetworkInterface::get_default_instance(); if (network->connect() != 0) { printf("Cannot connect to the network, see serial output"); return 1; } /* apertura della richista POST al server e identificazione dell'utente*/ { HttpRequest* post_req = new HttpRequest(network, HTTP_POST, "http://34.212.30.54:5000/api/send_id_and_get_threshold"); post_req->set_header("Content-Type", "application/json"); const char body[] = "{\"student_id\": codice_persona}"; HttpResponse* post_res = post_req->send(body, strlen(body)); if (!post_res) { printf("HttpRequest failed (error code %d)\n", post_req- >get_error()); return 1; } printf("\n----- HTTP POST response -----\n"); dump_response(post_res); delete post_req; } while (1) { float temp = sht31.readTemperature(); float humidity = sht31.readHumidity(); if (temp != stored_temp || humidity != stored_humidity){ /* a seconda che il server richieda la temperatura, oppure…