6LoWPAN T click

Description of product

6LoWPAN T click carries the CC2520 2.4GHz RF transceiver. The click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over SPI interface, with additional functionality provided by the following pins on the mikroBUS™ line: PWM, INT, RST, AN.

CC2520 features

The CC2520 is TI's second-generation ZigBee®/IEEE 802.15.4 RF transceiver for the 2.4GHz unlicensed ISM band. This chip enables industrial grade applications by offering state-of-the-art selectivity/co-existence, excellent link budget, operation up to 125°C and low voltage operation.

In addition, the CC2520 provides extensive hardware support for frame handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and frame timing information.


TypeRF 2.4GHz
ApplicationsIEEE 802.15.4 systems, ZigBee® systems, industrial monitoring and control, home and building automation, Automatic Meter Reading, Low-power wireless sensor networks, etc.
On-board modulesCC2520
Input Voltage3.3V
Click board sizeM (42.9 x 25.4 mm)

Pinout diagram

This table shows how the pinout on 6LowPAN T click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.png             PinNotes
General purpose digital I/ORF GPIO0  1ANPWM16RF VREG EN   When high, digital voltage regulator is active
External reset pin, active low  RF RST#2RSTINT15RF GPIO 1General purpose digital I/O
Chip selectRF CS3CSTX14NC
Serial clockRF SCK4SCKRX13NC
Master input slave outputRF MISO5MISOSCL12NC
Master output slave inputRF MOSI6MOSISDA11NC
Power supply+3.3V73.3V5V10NC


Code examples for 6LoWPAN T click, written for MikroElektronika hardware and compilers are available on Libstock.

Note: The full 6LoWPAN stack is not currently implemented in our libraries. However, there are functionalities for sending and receiving data packets, as well as for setting the network ID and 16-bit addresses for individual devices. 

Code snippet

This code snippet, taken from our 6LoWPAN click example for clicker 2 for MSP432, shows how data is transmitted and received between two MCUs using 6LoWPAN clicks.

The value of _RECEIVER_ determines whether the MCU will behave as a receiver or a transmitter. RF channel, PAN ID, and individual addresses are also defined.

There is an interrupt routine for detecting a button press, which is used in the transmitter code to indicate that a package should be sent.

The other interrupt routine is connected to the GP1 line of the click itself and will trigger when new data is ready to be received. It will check the received package, and turn on the data ready indicator if everything is fine.

In the main routine, after some initialization code, two sections can be found - one for the receiver and the other one for the transmitter.

The receiver will check the package ready indicator and handle the received package. In this example, an LED will be toggled to indicate successful data transfer.

The transmitter will wait for a flag to be set from the button interrupt routine. When the flag is set, a package will be sent to the receiver.

02     // Initialize BasicRF
03     config.myAddr = LIGHT_ADDR;
04     if (C6LP_init(&config) == FAILED)
05         LED1 = 1;
07     C6LP_receiveOn();
08     EnableInterrupts();
10     while (1)
11     {
12         while (!C6LP_isPacketReady());
14         if (C6LP_receive(pRxData, APP_PAYLOAD_LENGTH, 0) > 0)
15         {
16             if (pRxData[0] == LIGHT_TOGGLE_CMD)
17             {
18                 LED0 = !LED0;
19             }
20         }
21     }
22 #else
23     pTxData[0] = LIGHT_TOGGLE_CMD;
25     // Initialize BasicRF
26     config.myAddr = SWITCH_ADDR;
27     if (C6LP_init(&config) == FAILED)
28         LED1 = 1;
30     // Keep Receiver off when not needed to save power
31     C6LP_receiveOff();
33     flag = 0;
34     EnableInterrupts();
35     while (1)
36     {
37         if (flag)
38         {
39             flag = 0;
40             LED0 = !LED0;
41             C6LP_sendPacket(LIGHT_ADDR, pTxData, APP_PAYLOAD_LENGTH);
42             EnableInterrupts();
43         }
44     }
45 #endif