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CC2530: I/O control

Liang Paker
Intellectual 280 points
Part Number: CC2530


Hi, these's a problem about the control signal at CC2530 for RS485.

When set CC2530 P0.2/P0.3 as UART port, then UART convert to RS485 (ADM3485EARZ), CC2530 P0.5 act as the RTS of RS485 to control TX and RX.

CC2530 P0.5 will be continuous high logic for several second sometimes(it repeat about every 20min or 30min), that will lead to RS485 connection fail and reconnect.

How to avoid this abnormal control of CC2530 P0.5?

  • 0
    TI__Guru**** 219477 points

    Hi Liang,

    What stack are you evaluation, what is the version of this solution, and what hardware are you using? You can consider switching to the secondary pin configuration (TX P1.6, RX P1.7, RT P1.5, CT P1.4) or monitor your hardware/software to discover the root cause of the high logic on the pin.

    Regards,
    Ryan