STM32CubeF4

@verbatim
******************************************************************************
* @file readme.txt
* @author MCD Application Team
* @brief Description of the Es_WIFI Module in TCP Client mode.
******************************************************************************
*
* Copyright (c) 2017 STMicroelectronics International N.V. All rights reserved.
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@endverbatim

@par Application Description

This application shows how to use the Es-WiFi module to perform a TCP client mode
using STM32 Cube HAL. It demonstrates how to set up a client program, connect it
to a TCP server.

The Inventek eS-WiFi module is offered with a complete TCP/IP stack and requires
only a simple AT command over the SPI interface to communicate with the module.

In a typical embedded application, the STM32 microcontroller is used to send the
AT command to initiate a client connection.

The es-wifi module starts to connect to an access point. Once connected, we should
connect to a specific server. The address of the server is declared in RemoteIP[]
in main.c.
Then, the es-wifi module will be initiated as a client and connected to the server and
will check the connection. 8002 is the standard port number used for access.
If connection is successful, the client sends a message "STM32:Hello!"
to the server.
While connection by the client is still alive, the server and client can communicate.

If the LCD is used (#define LCD_USE in main.c), log messages will be displayed
to inform user about es_wifi module status and the IP address value, else this
will be ensured by LEDs:
+ LED4: error connection.

This application may be used with a Smartphone (more detailed setup
instructions are described in section "Hardware and Software environment").

@par Directory contents
- WiFi/WiFi_Client_Server/Inc/main.h eader for main.c module
- WiFi/WiFi_Client_Server/Inc/stm32f4xx_hal_conf.h HAL configuration file
- WiFi/WiFi_Client_Server/Inc/stm32f4xx_it.h STM32 interrupt handlers header file
- WiFi/WiFi_Client_Server/Src/main.c Main Program
- WiFi/WiFi_Client_Server/Src/system_stm32f4xx.c STM32F4xx system clock configuration file
- WiFi/WiFi_Client_Server/Src/stm32f4xx_it.c STM32 interrupt handlers
- WiFi/Common/Src/es_wifi.c Implementation of the ES_WIFI_XXX() API.
- WiFi/Common/Src/es_wifi_io.c Implementation of the ES_WIFI_IO_XXX() API.
- WiFi/Common/Src/wifi.c Implementation of the WIFI_XXX() API.
- WiFi/Common/Inc/es_wifi.h Header for the functions and defines used by the es_wifi.c
- WiFi/Common/Inc/es_wifi_io.h Header for the functions and defines used by the es_wifi_io.c
- WiFi/Common/Inc/wifi.h Header for the functions and defines used by the wifi.c

@par Hardware and Software environment

- This application runs on STM32F413XX devices.

- This application has been tested with the following environment:
- STM32F413H_DISCOVERY Rev-B board.

-Using Android Phone
- Connect your Android to a Network
- Update in main.c the following defines SSID and PASSWORD with your own AP settings
- Open TCP Server application already installed on the smartphone (link: https://play.google.com/store/search?q=tcp%20server&c=apps&hl=en )
- Get the IP address of the server and update the RemoteIP variable in main.c
- Set server port number to 8002 and press create server

In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Check that DK board is connected to a remote PC before running the application
- Run the application