BLE 2 Click Board

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BLE 2 Click Board

Product Description

The BLE2 Click Board™  is an excellent choice if you want simple, temporary connectivity with your smart devices over Bluetooth 4.1.

The BLE2 Click Board™ features the RN4020 module from Microchip, which integrates RF, a baseband controller, and a command API processor, making it a complete Bluetooth Low Energy solution. The click communicates with the target board MCU through mikroBUS™ RX, TX and AN (CMD), PWM (con.), and RST (wake) lines. The board is designed to use a 3.3V power supply only.

Microchip Low-energy Data Profile

The RN4020 has Microchip’s Low-energy Data Profile (MLDP) which enables an asynchronous serial data connection between two RN4020 devices (which could be two BLE2 Click Board™s). The module can be remotely controlled or updated over the air by another module over a secure connection or can be controlled or updated through its UART interface.

PCB trace Antenna

The RN4020 module aboard BLE2 click incorporates a PCB antenna with a range of at least 30m. 

Bluetooth 4.1

Bluetooth 4.1 is intended for IoT, it has low power consumption and lets any device be a peripheral and a hub at the same time.

Specifications

Pinout diagram

This table shows how the pinout on the BLE2 Click Board™  corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin		Pin	Notes
Indicates connection state	CONN	1	AN	PWM	16	CMD/MLDP	Command or MLDP mode
Deep Sleep Wake	SWAKE	2	RST	INT	15	NC
NC	3	CS	TX	14	BT_UART_TX	UART Transmit
NC	4	SCK	RX	13	BT_UART_RX	UART Receive
NC	5	MISO	SCL	12	NC
NC	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Software Support

01 void main() {
02   Display_Init();
03   MCU_Init();
04   #ifdef INIT_BLE
05   BLE_Init();
06   delay_ms(2000);
07   #else
08   RN_WAKE = 1;
09   wait_response("CMD");
10   #endif
11   DrawFrame();
12   InitTimer2();
13   while(1)
14   {
15     if(data_ready)
16     {
17       //If characteristic is configured as write
18       //received messages come here
19       Display_Message();
20       reset_buff();
21     }
22     else
23     {
24        //Test: every 5sec increase baterry level (0 to 100%)
25        //and send value via Bluetooth Low Energy
26        if (tmr_flg)
27        {
28           batt_level++;
29           if(batt_level > 100)
30           {
31             batt_level = 0;
32           }
33           Display_BatteryLevel();
34           if(RN_CONN)
35           { //send battery level value if BLE connected
36             shorttohex(batt_level, batt_level_txt);
37             ltrim(batt_level_txt);
38             ble2_write_server_characteristic_value_via_UUID("2A19",batt_level_txt);
39           }
40           tmr_flg = 0;
41        }
42     }
43   }
44 }

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