Delta / Mbed OS NNN50_WiFi_HelloWorld Featured

Hello World program for NNN50_WIFI_API library

Dependencies:   NNN50_WIFI_API

This is a must try example for basic WIFI functions using DELTA DFCM-NNN50 platform. In order to test with this example, user first need to open UDP Server port (use 1030 in this example) on a PC or mobile with Socket test tool (download UDP Test Tool' for PC, and Socket X for iOS or anymore socket test tool program available) When this example is running, the module will connect to a pre-defined AP router and run as UDP Client. For more information on the usage of regular TCP and UDP Sockets, the mbed handbook can be found here

main.cpp@8:08230913074f, 2017-06-29 (annotated)

Committer:
tsungta
Date:
Thu Jun 29 04:21:01 2017 +0000
Revision:
8:08230913074f
Parent:
6:1dac7bcca23d 
update NNN50_WIFI_API and mbed-os to sync with each other

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tsungta 6:1dac7bcca23d 1 /******************** (C) COPYRIGHT 2016 Delta Electronics, Inc. ***************
tsungta 6:1dac7bcca23d 2 *
tsungta 6:1dac7bcca23d 3 * File Name : main.cpp
tsungta 6:1dac7bcca23d 4 * Authors : Tsungta Wu - CPBG (tsungta.wu@deltaww.com)
tsungta 6:1dac7bcca23d 5 * Version : V.1.0.0
tsungta 6:1dac7bcca23d 6 * Date : 2016/Nov/24
tsungta 6:1dac7bcca23d 7 *
tsungta 6:1dac7bcca23d 8 * This example only show the most basic WiFi operation include AP scan and connect
tsungta 6:1dac7bcca23d 9 * The usage of TCP/UDP socket please refer to the mbed Handbook from the link below
tsungta 6:1dac7bcca23d 10 * https://developer.mbed.org/handbook/Socket
tsungta 6:1dac7bcca23d 11 *
tsungta 6:1dac7bcca23d 12 *******************************************************************************/
tsungta 6:1dac7bcca23d 13
tsungta 6:1dac7bcca23d 14 #include "mbed.h"
tsungta 6:1dac7bcca23d 15 #include "EthernetInterface.h"
tsungta 6:1dac7bcca23d 16 #include "WIFIDevice.h"
tsungta 6:1dac7bcca23d 17
tsungta 6:1dac7bcca23d 18 const char* ECHO_SERVER_ADDRESS = "192.168.2.13";
tsungta 6:1dac7bcca23d 19 const int ECHO_SERVER_PORT = 1030;
tsungta 6:1dac7bcca23d 20
tsungta 6:1dac7bcca23d 21 void scanCallback(tstrM2mWifiscanResult result)
tsungta 6:1dac7bcca23d 22 {
tsungta 6:1dac7bcca23d 23 printf("SSID: %s \n", result.au8SSID);
tsungta 6:1dac7bcca23d 24 printf("RSSI: %i \n", result.s8rssi);
tsungta 6:1dac7bcca23d 25 }
tsungta 6:1dac7bcca23d 26
tsungta 6:1dac7bcca23d 27 int main() {
tsungta 6:1dac7bcca23d 28
tsungta 6:1dac7bcca23d 29 EthernetInterface eth;
tsungta 6:1dac7bcca23d 30 WIFIDevice wifi;
tsungta 6:1dac7bcca23d 31
tsungta 6:1dac7bcca23d 32 eth.init();
tsungta 6:1dac7bcca23d 33
tsungta 6:1dac7bcca23d 34 wifi.apScan(scanCallback);
tsungta 6:1dac7bcca23d 35
tsungta 6:1dac7bcca23d 36 wifi.setNetwork(M2M_WIFI_SEC_WPA_PSK, "TP-LINK_2.4G_TTWU", "0972753720");
tsungta 6:1dac7bcca23d 37
tsungta 6:1dac7bcca23d 38 eth.connect();
tsungta 6:1dac7bcca23d 39
tsungta 6:1dac7bcca23d 40 if(wifi.is_AP_connected())
tsungta 6:1dac7bcca23d 41 printf("Connect Success! \n");
tsungta 6:1dac7bcca23d 42 else
tsungta 6:1dac7bcca23d 43 printf("Connect Fail! \n");
tsungta 6:1dac7bcca23d 44
tsungta 6:1dac7bcca23d 45 printf("MAC: %s\n", eth.getMACAddress());
tsungta 6:1dac7bcca23d 46 printf("IP: %s\n", eth.getIPAddress());
tsungta 6:1dac7bcca23d 47 printf("Gateway: %s\n", eth.getGateway());
tsungta 6:1dac7bcca23d 48 printf("NetworkMask: %s\n", eth.getNetworkMask());
tsungta 6:1dac7bcca23d 49
tsungta 6:1dac7bcca23d 50 UDPSocket sock;
tsungta 6:1dac7bcca23d 51 sock.init();
tsungta 6:1dac7bcca23d 52
tsungta 6:1dac7bcca23d 53 Endpoint echo_server;
tsungta 6:1dac7bcca23d 54 echo_server.set_address(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT);
tsungta 6:1dac7bcca23d 55
tsungta 6:1dac7bcca23d 56 char out_buffer[] = "Hello World";
tsungta 6:1dac7bcca23d 57 printf("Sending message '%s' to server (%s)\n",out_buffer,ECHO_SERVER_ADDRESS);
tsungta 6:1dac7bcca23d 58 sock.sendTo(echo_server, out_buffer, sizeof(out_buffer));
tsungta 6:1dac7bcca23d 59
tsungta 6:1dac7bcca23d 60 char in_buffer[256]; //IMPORTANT, array size MUST >= the actual received data size or set to maximum of 1400 if there is uncertainty
tsungta 6:1dac7bcca23d 61 int n = sock.receiveFrom(echo_server, in_buffer, sizeof(in_buffer));
tsungta 6:1dac7bcca23d 62
tsungta 6:1dac7bcca23d 63 if(n <0)
tsungta 6:1dac7bcca23d 64 in_buffer[0] = '\0';//IMPORTANT, in case n = -1 when set_bloacking is timeout, prevent the illegal array in_buffer[-1] access
tsungta 6:1dac7bcca23d 65 else
tsungta 6:1dac7bcca23d 66 in_buffer[n] = '\0';
tsungta 6:1dac7bcca23d 67
tsungta 6:1dac7bcca23d 68 printf("Received message from server: '%s'\n", in_buffer);
tsungta 6:1dac7bcca23d 69
tsungta 6:1dac7bcca23d 70 sock.close();
tsungta 6:1dac7bcca23d 71
tsungta 6:1dac7bcca23d 72 eth.disconnect();
tsungta 6:1dac7bcca23d 73
tsungta 6:1dac7bcca23d 74 wifi.sleep();
tsungta 6:1dac7bcca23d 75
tsungta 6:1dac7bcca23d 76 while(1) {
tsungta 6:1dac7bcca23d 77 }
tsungta 6:1dac7bcca23d 78 }
tsungta 6:1dac7bcca23d 79