• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 15 subscribers
  • Views 483 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC2530 with CC2591 design

LZH
Intellectual 700 points
Other Parts Discussed in Thread: CC2591, CC2530

Hi, everyone,

 

I was asked to design a cc2530 with cc2591 front-end PA-LNA system. Meanwhile, I need to use P0.2-P0.5 as a (UART 0, alt 2) debug interface, as I need to connect P1.4-P1.7 (UART 1, alt 2) with hardware flow control to another device. However, it seems to be P1.4 is captured by the CC2591 EN pin, and I can't change the code to let it connect to any other pins.  Is there any solution for the P1.4 pin conflict? I'm looking forward for your replies.

 

Thank you very much.

  • 0
    TI__Genius 10955 points

    What code are you running? I believe the output to CC2591 is set up using an OBSSEL register (cf. p 86-87 in the CC253x User Guide). If you have the source code, you need to replace the assignments to OBSSEL4 with a similar assignment to another OBSSEL register (and keep OBSSEL4 at its reset value of 0). The observation output can be set up on pins P1.0-P1.5 using the registers OBSSEL0-OBSSEL5, so it should be possible to find an unused pin for this.

  • 0 in reply to hec
    Intellectual 700 points

    Oh, Thank you very much. 

     

    Is it to change code here in mac_radio_defs.c

    /* P1_4 -> EN (LNA control) */

        RFC_OBS_CTRL1 = RFC_OBS_CTRL_LNAMIX_PD_INV;

        OBSSEL4       = OBSSEL_OBS_CTRL1;

     

    Change the register above can solve, right? Thank you.

  • 0 in reply to LZH
    TI__Genius 10955 points

    Yes, just replace OBSSEL4 with e.g. OBSSEL3 (if you want to use P1.3).