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main.cpp
- Committer:
- mbed_official
- Date:
- 2018-07-26
- Revision:
- 72:b4761c52cc91
- Parent:
- 71:a0fbcc153b55
- Child:
- 74:af086eac5e99
File content as of revision 72:b4761c52cc91:
/* WiFi Example * Copyright (c) 2016 ARM Limited * * Licensed 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. */ #include "mbed.h" #include "TCPSocket.h" #define internal 1 #define WIFI_ESP8266 2 #define WIFI_IDW0XX1 3 #define WIFI_ISM43362 4 WiFiInterface *wifi; #if MBED_CONF_APP_WIFI_SHIELD == WIFI_ESP8266 #include "ESP8266Interface.h" WiFiInterface *WiFiInterface::get_default_instance() { static ESP8266Interface esp(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX); return &esp; } #elif MBED_CONF_APP_WIFI_SHIELD == WIFI_ISM43362 #include "ISM43362Interface.h" WiFiInterface *WiFiInterface::get_default_instance() { static ISM43362Interface ism; return &ism; } #elif MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW0XX1 #include "SpwfSAInterface.h" WiFiInterface *WiFiInterface::get_default_instance() { static SpwfSAInterface spwf(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX); return &spwf; } #endif const char *sec2str(nsapi_security_t sec) { switch (sec) { case NSAPI_SECURITY_NONE: return "None"; case NSAPI_SECURITY_WEP: return "WEP"; case NSAPI_SECURITY_WPA: return "WPA"; case NSAPI_SECURITY_WPA2: return "WPA2"; case NSAPI_SECURITY_WPA_WPA2: return "WPA/WPA2"; case NSAPI_SECURITY_UNKNOWN: default: return "Unknown"; } } int scan_demo(WiFiInterface *wifi) { WiFiAccessPoint *ap; printf("Scan:\n"); int count = wifi->scan(NULL,0); if (count <= 0) { printf("scan() failed with return value: %d\n", count); return 0; } /* Limit number of network arbitrary to 15 */ count = count < 15 ? count : 15; ap = new WiFiAccessPoint[count]; count = wifi->scan(ap, count); if (count <= 0) { printf("scan() failed with return value: %d\n", count); return 0; } for (int i = 0; i < count; i++) { printf("Network: %s secured: %s BSSID: %hhX:%hhX:%hhX:%hhx:%hhx:%hhx RSSI: %hhd Ch: %hhd\n", ap[i].get_ssid(), sec2str(ap[i].get_security()), ap[i].get_bssid()[0], ap[i].get_bssid()[1], ap[i].get_bssid()[2], ap[i].get_bssid()[3], ap[i].get_bssid()[4], ap[i].get_bssid()[5], ap[i].get_rssi(), ap[i].get_channel()); } printf("%d networks available.\n", count); delete[] ap; return count; } void http_demo(NetworkInterface *net) { TCPSocket socket; nsapi_error_t response; printf("Sending HTTP request to www.arm.com...\n"); // Open a socket on the network interface, and create a TCP connection to www.arm.com response = socket.open(net); if(0 != response) { printf("socket.open() failed: %d\n", response); return; } response = socket.connect("api.ipify.org", 80); if(0 != response) { printf("Error connecting: %d\n", response); socket.close(); return; } // Send a simple http request char sbuffer[] = "GET / HTTP/1.1\r\nHost: api.ipify.org\r\nConnection: close\r\n\r\n"; nsapi_size_t size = strlen(sbuffer); // Loop until whole request send while(size) { response = socket.send(sbuffer+response, size); if (response < 0) { printf("Error sending data: %d\n", response); socket.close(); return; } size -= response; printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer); } // Receieve a simple http response and print out the response line char rbuffer[64]; response = socket.recv(rbuffer, sizeof rbuffer); if (response < 0) { printf("Error receiving data: %d\n", response); } else { printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer); } // Close the socket to return its memory and bring down the network interface socket.close(); } int main() { int count = 0; printf("WiFi example\n"); #ifdef MBED_MAJOR_VERSION printf("Mbed OS version %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION); #endif wifi = WiFiInterface::get_default_instance(); if (!wifi) { printf("ERROR: No WiFiInterface found.\n"); return -1; } count = scan_demo(wifi); if (count == 0) { printf("No WIFI APNs found - can't continue further.\n"); return -1; } printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID); int ret = wifi->connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2); if (ret != 0) { printf("\nConnection error: %d\n", ret); return -1; } printf("Success\n\n"); printf("MAC: %s\n", wifi->get_mac_address()); printf("IP: %s\n", wifi->get_ip_address()); printf("Netmask: %s\n", wifi->get_netmask()); printf("Gateway: %s\n", wifi->get_gateway()); printf("RSSI: %d\n\n", wifi->get_rssi()); http_demo(wifi); wifi->disconnect(); #if MBED_CONF_APP_WIFI_SHIELD != internal delete wifi; #endif printf("\nDone\n"); }