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INCREASE DATA TRANSFER RATE OF EZ430RF2500

Ayan Mukherjee
Prodigy 40 points
Other Parts Discussed in Thread: CC2500

I have purchased one EZ430RF2500. My application includes transfer of sampled (@20KHz, 10 bit) analog data between the ED and the AP. I have started with modifying the Sensor demo example to move towards my objective.

I have modified the main_AP.c to remove the ADC function altogether .Further I have modified the main_ED.c to remove the temperature sampling part. Also I have decreased the value of TACCR0 to 30.

AS the debugger operates at a maximum rate of 9600 bps, we are using a UART to USB bridge converter to increase the data transfer rate between the AP and the PC. Further I have changed the baud rate setting from 9600 to 115200.

I am using a software 'terminal' to log the data received at the COM port of the PC.

After running the modified codes, I am receiving on around 211 read outs at the COM port terminal.

What further modifications do I need to make to achieve my goal?

I have gone through other posts on similar topics. But such discussions have failed to through up specific solutions.

Soliciting help. Thanks in advance.

  • 0
    TI__Genius 13620 points

    Here's a few things you can try:

    1. Try to increase the over-the-air data rate to e.g. 500kbps.
    2. Consider increasing the SPI speed between the MSP430 and CC2500.
    3. Reduce overhead by transmitting multiple samples at the same time instead of single samples over the air.