Sog Yang / Mbed OS NNN50_BLEWIFISensor

BLE-WiFi with BIOSensors

Dependencies:   AS7000 BNO055 NNN50_WIFI_API

DELTA NNN50 (Bluetooth LE 4.X & 802.11 b/g/n) with Bio Sensor (HRM, 9DoF motion Sensor) reference design.

Env. Setup step by step.

  1. Download or build a TCP Server on you host computer
    1. Please find out the TCP server code or install TCP server application in your host computer.
  2. Import this sample application and setup these information about AP & TCP Server
    1. *char* AP_SSID = "SOG";
    2. *char* AP_PWD = "1122334455667788";
    3. *char* TCP_SERVER_ADDRESS = "10.0.1.13";
    4. *int TCP_SERVER_PORT = 1030;
  3. Compiler your code and download to your mBed device.
  4. Control your mBed device
    1. Please use NORDSemi nRF Tool and setup and watch these information: GATT CMD: 0x00 (connect to AP, TCP Server, and create TCP socket), 0x02 disconnection TCP server, close socket, and WiFi sleep), 0xA1 (send sensor data to tcp server from out_buffer[]) and Status will be update by Bluetooth LE adv through manufacturing information
0x000x020xA1
WiFi,AP&TCP Server connectWiFi,AP, & TCP Server disconnectSend sensor data to TCP Server

main.cpp

Committer:
tsungta
Date:
2017-04-17
Revision:
4:11b81280c65b
Parent:
3:9bd3e863e15b
Child:
5:ffe1a4c4881e

File content as of revision 4:11b81280c65b:

/******************** (C) COPYRIGHT 2016 Delta Electronics, Inc. ***************
*
* File Name : main.cpp
* Authors   : Tsungta Wu - CPBG (tsungta.wu@deltaww.com)
* Version   : V.1.0.0
* Date      : 2016/Nov/24
*
* This example only show the most basic WiFi operation include AP scan and connect 
* The usage of TCP/UDP socket please refer to the mbed Handbook from the link below
* https://developer.mbed.org/handbook/Socket
*
*******************************************************************************/

#include "mbed.h"
#include "EthernetInterface.h"
#include "WIFIDevice.h"

const char* ECHO_SERVER_ADDRESS = "192.168.2.13";
const int ECHO_SERVER_PORT = 1030;

void scanCallback(tstrM2mWifiscanResult result)
{
    printf("SSID: %s \n", result.au8SSID);
    printf("RSSI: %i \n", result.s8rssi);
}

int main() {

    EthernetInterface eth;
    WIFIDevice wifi;

    eth.init();

    wifi.apScan(scanCallback);
             
    wifi.setNetwork(M2M_WIFI_SEC_WPA_PSK, "TP-LINK_2.4G_TTWU", "0972753720"); 
    
    eth.connect();    

    if(wifi.is_AP_connected())
        printf("Connect Success! \n");
    else
        printf("Connect Fail! \n");    

    printf("MAC: %s\n", eth.getMACAddress());            
    printf("IP: %s\n", eth.getIPAddress());
    printf("Gateway: %s\n", eth.getGateway());
    printf("NetworkMask: %s\n", eth.getNetworkMask()); 

    UDPSocket sock;
    sock.init();
    
    Endpoint echo_server;
    echo_server.set_address(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT);
    
    char out_buffer[] = "Hello World";
    printf("Sending  message '%s' to server (%s)\n",out_buffer,ECHO_SERVER_ADDRESS);
    sock.sendTo(echo_server, out_buffer, sizeof(out_buffer));
    
    char in_buffer[256];    //IMPORTANT, array size MUST >= the actual received data size or set to maximum of 1400 if there is uncertainty
    int n = sock.receiveFrom(echo_server, in_buffer, sizeof(in_buffer));
    
    if(n <0)
        in_buffer[0] = '\0';//IMPORTANT, in case n = -1 when set_bloacking is timeout, prevent the illegal array in_buffer[-1] access 
    else
        in_buffer[n] = '\0';
        
    printf("Received message from server: '%s'\n", in_buffer);
    
    sock.close();
    
    eth.disconnect();                             
    
    wifi.sleep();
                                 
    while(1) {
    }
}