Page 355 - ARM Based Microcontroller Projects Using MBED

14.3 PROJECT 1—ANDROID—NUCLEO BOARD COMMUNICATION USING THE WI-FI EXPANSION BOARD 341
/**********************************************************************
Wi-Fi EXPANDION BOARD RELAY CONTROL
===================================

In this program the Nucleo Wi-Fi expansion board is plugged on top
of the Nucleo0F411RE development board. PC_0 to PC_3 pins of the
development board are connected to a 4-channel relay board. The
relay contacts are controlled by sending commands from a mobile
phone (or a PC) over teh Wi-Fi link using the TCP protocol. Commands
ONx activates relay x. Similarly, command OFFx de-ctivates relay x.
Author: Dogan Ibrahim
Date : September 2018
File : WiFi
**********************************************************************/
#include "mbed.h"
#include "SpwfInterface.h"
#include "TCPSocket.h"
//
// Define the expansion board to development board UART connections
//
#define TX PA_9
#define RX PA_10
#define IPAddress "192.168.1.178" // Mobile phone IP address
SpwfSAInterface wifi(TX, RX, false);

//
// Configure all relays as outputs
//
DigitalOut Relay1(PC_0);
DigitalOut Relay2(PC_1);
DigitalOut Relay3(PC_2);
DigitalOut Relay4(PC_3);

int main()
{
int count;
TCPSocket socket(&wifi); // Create a TCP socket
char Buffer[80]; // Buffer to store data
char *ssid = "BTHomeSpot-XNH"; // Wi-FI SSD name
char *password = "49346abaeb"; // Wi-FI password

Relay1 = 1; // De-activate Relay 1
Relay2 = 1; // De-activate Relay 2
Relay3 = 1; // De-activate Relay 3
Relay4 = 1; // De-activate Relay 4
//
// Connect to the Wi-Fi
//
FIG. 14.10 Program listing.
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