RTOS/CC2530-CC2592EM-RD: Power amplifier interfacing issue with Z-Stack Home 1.2.2a.44539

Kamlesh Patel49

Part Number: CC2530-CC2592EM-RD
Other Parts Discussed in Thread: CC2530, CC2592, Z-STACK

Tool/software: TI-RTOS

Dear All member

we have design CC2530+CC2592. i use Z-Stack Home 1.2.2a.44539 in my firmware. i have used P1_1 pin for CC2592 PA Pin for enable and disable.i have set P1_1 = 1 before ZMacInit() Function. but after call MAC reset function function stat = MAC_MlmeResetReq( SetDefaultPIB ); in Zmac.c file my PA pin for CC2592 Become automatically Low and not set 1 after it.

i have set PIN P1_1 :

P1SEL |= 0x00;
P1DIR |= BV(1); //KP
P1_1 = 1;

if i set P1_1=1 then i get better range than P1_1 = 0.

Please suggest Why it Occur and what is solution for it.

over 7 years ago

0 YiKai Chen over 7 years ago

Guru 735685 points

I think you should define HAL_PA_LNA_CC2592 and change OBSSEL0 to OBSSEL2 since you use P1.2 instead of P1.0 as LNA pin in reference design. I think you also need to change HGM pin since you P1.0 instead P0.7 as HGM pin.

0 Kamlesh Patel49 over 7 years ago in reply to YiKai Chen

Intellectual 300 points

Dear Yikai

i have already done this changes but nothing solution it.

but i recognized that when i removed PA,LAN,HGM line from my CC2530 than it give range -25dbm and when i attached this line it range goes down to -90dbm. this three pin status is like

1) PA = 0v

2)LNA = 3.3V

3)HGM = 3.3V.

please suggest where to i have changed in Zstack firmware for this line control ?.

0 YiKai Chen over 7 years ago in reply to Kamlesh Patel49

Guru 735685 points

Can you show me how you modify the code?

0 Kamlesh Patel49 over 7 years ago in reply to YiKai Chen

Intellectual 300 points

till i have not modified zstack code but can you tell where i do change for my hardware for better performance.

0 YiKai Chen over 7 years ago in reply to Kamlesh Patel49

Guru 735685 points

I had told you that you should define HAL_PA_LNA_CC2592 and change OBSSEL0 to OBSSEL2 since you use P1.2 instead of P1.0 as LNA pin in reference design. I think you also need to change HGM pin since you P1.0 instead P0.7 as HGM pin.

0 Kamlesh Patel49 over 7 years ago in reply to YiKai Chen

Intellectual 300 points

i have changed this modification but not done other modification.
is this is enough ?. please tell me other than this changes.

0 Kamlesh Patel49 over 7 years ago in reply to Kamlesh Patel49

Intellectual 300 points

i have changed HAL_PA_LNA_CC2592 in hal_board_cfg.h
and OBSSEL2 for P1_2 LNA line in mac_radio_def.c

0 YiKai Chen over 7 years ago in reply to Kamlesh Patel49

Guru 735685 points

I suppose you shall use the following codes, do you?

/* P1_1 -> PAEN */
RFC_OBS_CTRL0 = RFC_OBS_CTRL_PA_PD_INV;
OBSSEL1 = OBSSEL_OBS_CTRL0;

/* P1_2 -> EN (LNA control) */
RFC_OBS_CTRL1 = RFC_OBS_CTRL_LNAMIX_PD_INV;
OBSSEL2 = OBSSEL_OBS_CTRL1;

0 Kamlesh Patel49 over 7 years ago in reply to YiKai Chen

Intellectual 300 points

yes, i have already done this change.

but still i don't get better range when i attached LNA,HGM line from CC2530 to CC2592.

and achieve range when i open LNA,HGM line from CC2530 Controller.

please give me solution for this,why this occurred.

0 YiKai Chen over 7 years ago in reply to Kamlesh Patel49

Guru 735685 points

I suggest you to use scope to check PA/LNA pins to make sure they work when TX/RX is working.

0 Kamlesh Patel49 over 7 years ago in reply to YiKai Chen

Intellectual 300 points

thanks yiki
this solution have resolve my problem.
actually i have use RFC_OBS_CTRL2 instead of RFC_OBS_CTRL1.
once again thanks.

0 YiKai Chen over 7 years ago in reply to Kamlesh Patel49

Guru 735685 points

You are welcome and it's good to know it works now.

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RTOS/CC2530-CC2592EM-RD: Power amplifier interfacing issue with Z-Stack Home 1.2.2a.44539