Component: WLAN ESP32 (ESP32) (Comms: Networking)

Author	Matrix Ltd.
Version	2.4
Category	Comms: Networking

WLAN ESP32 component

Wireless LAN component designed to work with ESP32 modules

Component Pack

FREE

Detailed description

No detailed description exists yet for this component

Examples

Here is an example Flowcode program to send analogue data to a html web page. The web page is set up to refresh every second Instructions on how to change the refresh rate and access the web page is explained within the example file. ESP Webpage

Downloadable macro reference

	ReadIPString
Collects the local IP address and returns it as an ASCII string. e.g. "192.168.0.1"
- STRING	Return

	SocketConnect
- STRING	Address
- UINT	Port
- BYTE	Return

	SocketListen
Listen on, or bind, local port to already opened socket. Returns 1 if OK, 0 if fail
- UINT	Port
- BYTE	Return

	ReadSSIDFromScan
Collects one of the SSID name strings from the last SSID Scan. The ScanForSSID macro must be called first.
- BYTE	Index
SSID Index
- STRING	Return

	CreateAccessPoint
Sets up the wireless LAN module into AP mode to host a wireless network. Other WIFI enabled devices can then connect to the module. Returns 1 for success.
- STRING	SSID
Name of the wireless network to create
- STRING	Password
Password used to gain access to the network
- BYTE	Channel
802.11 Channel Range 1-14
- BYTE	Encryption
0=Open, 1=WEP, 2=WPA_PSK, 3=WPA2_PSK, 4=WPA_WPA2_PSK
- BYTE	Return

	ReadIP
Collects a single byte from the local IP address. For example 192.168.0.1 Index = 3 : Return = 192 / Index = 0 : Return = 1
- BYTE	Index
Range: 0 to 3 Where 3 = the first number and 0 = the last number
- BYTE	Return

	SocketWrite
- STRING	Buffer
- UINT	Size
- UINT	Return

	Disconnect
Attempts to disconnect from the SSID.
- BYTE	Return

	ReadSignalStrengthFromScan
Collects the signal strength from the last SSID Scan. The ScanForSSID macro must be called first. Value returned is in negative dB, smaller value = better signal
- BYTE	Index
SSID Index
- INT	Return

	ReadEncryptionModeFromScan
Collects one of the encryption modes from the last SSID Scan. The ScanForSSID macro must be called first. 0=Open, 1=WEP, 2=WPA_PSK, 3=WPA2_PSK, 4=WPA_WPA2_PSK
- BYTE	Index
SSID Index
- BYTE	Return

	ConnectToSSID
Attempts to connect to the given SSID and Key values. Returns 1 if the SSID has been connected.
- STRING	SSID
- STRING	Key
- BYTE	Timeout
Number of seconds to wait for the connection, default 20
- BYTE	Return

	SocketOpen
Returns 1 if socket sucessfully opened
- BYTE	Return

	SocketClose
- VOID	Return

	Uninitialise
Shuts down the WiFi system for low power operation. Returns 1 if successful Returns 0 if not
- BYTE	Return

	AcceptOpen
Returns 1 if there is an incoming connection on the listening port
- BYTE	Return

	ScanForSSID
Checks for wireless networks in the local area which are broadcasting their SSID. Must not be connected to a network to allow this to function. Returns the number of wireless networks found, max 8.
- BYTE	Return

	SocketRead
- STRING	Buffer
- UINT	Size
- UINT	Return

	AcceptClose
Close the socket associated with the Accepted incoming connection
- VOID	Return

	Initialise
Initialise the WiFi system Returns 1 if successful Returns 0 if not
- BYTE	Return

Property reference

	Properties
	Verbose Debug
	Simulation
	Network Interface
List of network interfaces connected to the PC. Sets which interface we are communicating via.
	Console Data
Generate Console Data