NXP
/
example-wifi-lpc55s69
WiFi example application for LPC55S69 with ESP8266 shield/module
Diff: main.cpp
- Revision:
- 0:2f4d849e36e5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Mon Mar 25 22:50:52 2019 -0500 @@ -0,0 +1,112 @@ +/* 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" + +WiFiInterface *wifi; + +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; +} + +int main() +{ + 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; + } + + int count = scan_demo(wifi); + if (count == 0) { + printf("No WIFI APs 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()); + + wifi->disconnect(); + + printf("\nDone\n"); +}