WiFi2 click

WiFi2 click features the HLK-M30 WiFi module with a built-in TCP/IP protocol stack. The click is designed to run on a 3.3V power supply; it communicates with the target MCU over an UART interface and the following mikroBUS™ pins: AN, RST.

TCP/IP client of server

WiFi2 click can be set up both as a TCP/IP client or server. You can configure it with either a static or dynamic IP address. Use the mikroBUS™ AN line (DEF on this click) to reset WiFi2 to default factory settings if needed.

Security and network protocols

WiFi2 click supports standard security authentication systems (WEP64/WEP128/ TKIP/ AES, WEP/WPA-PSK/WPA2-PSK); as well as multiple network protocols (TCP/UDP/ DHCP/DNS). All these features make WiFi2 click ideal for home automation applications, remote controls, telemetry etc.

PBC antenna

The click features a PCB trace antenna, designed for the 2400–2483.5 MHz frequency band.

Specification

Key features

• HLK-M30 module
  • Supports 802.11b/g/n
  • TCP/UDP/DHCP/DNS network protocols supported
  • Built-in EP64/WEP128/ TKIP/ AES, WEP/WPA-PSK/WPA2-PSK authentication
• Interface: UART
• 3.3V power supply

Pinout diagram

This table shows how the pinout on WiFi2 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin	mikroBUStm				Pin	Notes
Reset to default factory settings	DEF	1	AN	PWM	16	NC	Not connected
Reset module	RST#	2	RST	INT	15	NC	Not connected
Not connected	NC	3	CS	TX	14	TX	UART transmit
Not connected	NC	4	SCK	RX	13	RX	UART receive
Not connected	NC	5	MISO	SCL	12	NC	Not connected
Not connected	NC	6	MOSI	SDA	11	NC	Not connected
Power supply	+3.3V	7	3.3V	5V	10	NC	Not connected
Ground	GND	8	GND	GND	9	GND	Ground

Programming

This function powers on the WiFi2 click module and must be executed before any usage of the click board functionality.

01 void WiFi2_PowerON( void )
02 {
03     WiFi2_DEF  = 1;
04     WiFi2_RST  = 0;
05     WiFi2_TX   = 0;
06     WiFi2_RX   = 0;
07     delay_ms( 500 );
08     WiFi2_RST  = 1;
09     delay_ms( 100 );
10     WiFi2_TX   = 1;
11     delay_ms( 100 );
12 }