CC2530: connecting CC2591 using Zstack

Peter Simpson1

Intellectual 800 points

Part Number: CC2530
Other Parts Discussed in Thread: CC2591, , CC2531, RF-RANGE-ESTIMATOR

Hi,

I am using Zstack V2.62 and have a cc2591 connected to a cc2530 micro

The connections on the cc2591 are

PAEN to P1_3 on the micro

EN to P1_2 on the micro

HGM connected to VDD

TXRX not connected

I have enabled HAL_PA_LNA, enabled P1_2 and P1_3 for the alternative function to use OBSSEL2 and 3 for controlling the CC2591

I have set the following in mac_radio_defs.c

RFC_OBS_CTRL0 = RFC_OBS_CTRL_PA_PD_INV;
OBSSEL3 = OBSSEL_OBS_CTRL0; /* use P1_3 for PA Control */

RFC_OBS_CTRL1 = RFC_OBS_CTRL_LNAMIX_PD_INV;
OBSSEL2 = OBSSEL_OBS_CTRL1; /* use P1_2 for LNA Control */

I have called HAL_BOARD_RF_FRONTEND_SETUP() and increased the power using macRadioSetTxPower(19) which is returning 19

MAC_RUNTIME_CC2591 has not been defined

I have done this on a coordinator and router but do not seem to be getting any additional range with the higher power about 60 meters

Any advice on the setup to increase the range would be appreciated

Thank You

over 3 years ago

0 YiKai Chen over 3 years ago

Guru 735455 points

You only need to define HAL_PA_LNA and revise the following in mac_radio_defs.c to use CC2591. There is no need to call HAL_BOARD_RF_FRONTEND_SETUP or macRadioSetTxPower.

RFC_OBS_CTRL0 = RFC_OBS_CTRL_PA_PD_INV;
OBSSEL3 = OBSSEL_OBS_CTRL0; /* use P1_3 for PA Control */

RFC_OBS_CTRL1 = RFC_OBS_CTRL_LNAMIX_PD_INV;
OBSSEL2 = OBSSEL_OBS_CTRL1; /* use P1_2 for LNA Control */

If you need to change default TX power, you can call macRadioSetTxPower. Still no need to call HAL_BOARD_RF_FRONTEND_SETUP.

0 Peter Simpson1 over 3 years ago in reply to YiKai Chen

Intellectual 800 points

Hi,

Thank you for your reply and advice.

I would have expected changing the tx power from 0 to 19 would make quite a change in range but it appears to to change much

I am sniffing with Ubiqua and a CC2531 USB receiver at close range to the router and coordinator

It is showing an RSSI of less than -20 on sent messages but the received packets pkt->rssi is -50 in the coordinator.

There seems to be a receive issue with the router and coordinator

Thank You

Regards

0 YiKai Chen over 3 years ago in reply to Peter Simpson1

Guru 735455 points

It's not accurate to use sniffer or pkt->rssi to measure TX power. It's recommended to use Spectrum Analyzer to check TX power in conductive or radiation mode.