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Wireless Communication using FLEX and ERIKA Enterprise Basic

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A demo showing a simple point to point wireless communication between two nodes, composed of a FLEX Board with a CC2420/EasyBee transceiver board, implemented using Erika Enterprise Basic.

The goal of this demo is to provide basic tools to develop more complex wireless applications, using the Erika kernel in conjunction with the FLEX Board .

 

Authors 

  • This e-mail address is being protected from spam bots, you need JavaScript enabled to view it (Scuola Superiore Sant'Anna)

Hardware

  • FLEX Base Boared hosting PIC33FFJ256MC710 microcontroller
  • FLEX Thru Hole Daughter Board with FlexiPanel EasyBee IEEE 802.15.4 tranceiver module or alteratively a FLex Demo Daughter Board with abuilt-in ready to use ZigBee connector
 

Software

  • Erika Enterprise Basic 1.4.1
 

PC Side Application

We used a PC connected to the FLEX Board as console. To visualize the data from the FLEX we used these softwares: Hyperterminal (Windows Systems) or Minicom (Linux). The setting was 115200 bit/sec without flow control.

The PC is connected to the FLEX by a RS232(COM) port. In our case by a USB/RS232 cable converter. The FLEX Board uses its UART1 to communicate with the PC. To interface the FLEX UART signals (0V/3.3V) and the PC RS232 signals (+12V/-12V), we used the IC MAX233CPP provided by MAXIM. This is not mandatory, one can use their own preferred line driver/receiver IC.

Flex Side Application

The CC2420/EasyBee can be connected through the FLEX Thru Hole Daughter Board or by the proper connector on the FLEX Demo Daughter Board . Note that, when the Flex Demo Board is used, both FIFOP and FIFO pins change, to accomodate this we must uncomment the following define statement in <hal.h>: #define FLEX_DEMO_BOARD.

Below are the pin connections between FLEX and CC2420/EasyBee connectors:
FLEX  
EasyBee
+3.3V_OUT 3.3V
GND GND
RG0_PIN90 RESETN
RG12_PIN96 VREG_EN
RD14_PIN47 or RE9_PIN19 FIFO
RG9_PIN14 CSN
RG8_PIN12 SI
RG7_PIN11 SO
RG6_PIN10 SCK
RG1_PIN89 CCA
RD13_PIN80 SFD
RF6_PIN55 FIFOP
 
 Note: Please refer Flex schematic and CC2420/EasyBee data sheets for more details.

Download

EasyBee demo

 

External links

None.

 
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