CC2652R: CC2652R with PA + LNA

Matias Alvarez

Part Number: CC2652R
Other Parts Discussed in Thread: CC2592, , SIMPLELINK-CC13X2-26X2-SDK, CC2652P, SYSCONFIG, BLE-STACK, SMARTRFTM-STUDIO, Z-STACK

Hi,

I have CC2652R with PA+LNA(CC2592) bought from link

I've configured pins 7, 13 and 14 as follows but it seems to not be working:

In main.c:

/* Map RFC_GPO0 to DIO13 */
IOCPortConfigureSet(IOID_13, IOC_PORT_RFC_GPO0, IOC_IOMODE_NORMAL);
 /* Map RFC_GPO1 to DIO7 */
IOCPortConfigureSet(IOID_7, IOC_PORT_RFC_GPO1, IOC_IOMODE_NORMAL);
 /* Normal I/O */
IOCPortConfigureSet(IOID_14, IOC_IOCFG31_PORT_ID_GPIO, IOC_IOMODE_NORMAL);

In mac_user_config.h changed these definitions:

#define RF_FE_IOD         {IOC_O_IOCFG7, IOC_O_IOCFG13, IOC_O_IOCFG14}
#define RF_FE_IOD_VAL     {IOC_IOCFG31_PORT_ID_RFC_GPO1, IOC_IOCFG31_PORT_ID_RFC_GPO0, IOC_IOCFG31_PORT_ID_GPIO}

Am i doing something wrong or am i missing any configurations?

Thanks in advance,

Matias

over 4 years ago

0 Ryan Brown1 over 4 years ago

TI__Guru**** 202096 points

The link you provided appears to be broken, please provide further hardware details as well as the SIMPLELINK-CC13X2-26X2-SDK version you are using. Also refer to this E2E post and the CC2652P.

Regards,
Ryan

0 Matias Alvarez over 4 years ago in reply to Ryan Brown1

Intellectual 595 points

Hi Ryan, sorry for the delay in my response. I looked at the post you mentioned. I'm not using sysconfig and have removed buttons and leds configurations to not overlap lna/pa configuration.

I'm using sdk 3.20 and the link is http://www.zigbeesolutions.com/zigbee/cc2652-cc2592-pa-lna-pcb-antenna-109110410123831561.html

0 Ryan Brown1 over 4 years ago in reply to Matias Alvarez

TI__Guru**** 202096 points

Hi Matias,

Thank you for updating the link. Can you please test for this behavior with BLE5-Stack and 15.4-Stack examples? Also, was this hardware working as intended with a previous SDK version? This will help me isolate the issue and involve the correct Software Development Team.

Regards,
Ryan

0 Matias Alvarez over 4 years ago in reply to Ryan Brown1

Intellectual 595 points

Sorry Ryan, I missclicked the button and marked the post as resolved.

It's the first time I use this hardware, so I don't know if it works with previous sdk versions. It seems to be running our firmware but the problem may be the pa/lna or the antenna because I've used smart rf studio to test it and no packet is transmitted or received. The configuration I used is external bias with differential RF and DIO7, 13 and 14 configured as CC2592 datasheet shows.

If I run the zstack examples o ble-stack examples do I need to configure DIO7, 13 and 14 and disable buttons and leds to not overlap the GPIOs?

Thanks

Matias

0 Ryan Brown1 over 4 years ago in reply to Matias Alvarez

TI__Guru**** 202096 points

Hey Matias,

The first step should definitely be to send/receive packets using SMARTRFTM-STUDIO, please refer to the previously linked post and perhaps ask Akhilesh Premkumar for assistance since he has gotten this setup to work with this environment as well as BLE5-Stack examples (yes, the DIOs should be configured and overlapping UI controls disabled). I am however continuing to work through his similar Z-Stack issue: https://e2e.ti.com/support/wireless-connectivity/zigbee-and-thread/f/158/t/893287

Regards,
Ryan

0 Matias Alvarez over 4 years ago in reply to Ryan Brown1

Intellectual 595 points

I used the same configuration as the post you mention and the smart rf studio just blocks(not responding) and it says "Sent Packets: 47824". The weird thing is that when I use no pa/lna configuration it works.

I will try to make changes to some files Akhilesh Premkumar mentioned in the post and come back with the result

Thanks,

Matias

0 Akhilesh Premkumar over 4 years ago in reply to Matias Alvarez

Intellectual 995 points

Hi Matias,

You should try the configuration from this link in SmartRF Studio

LAUNCHXL-CC26X2R1: RF Core Configuration through SysConfig. ZStack SDK 3.40.00.02

When you are performing the test in smartRF studio, make the sure the packets are actually being seing.
Enable Command View(F7) and it the Output tab of command view after the send packet make sure the STATUS is 0x400.

Regards
Akhilesh

0 Matias Alvarez over 3 years ago in reply to Akhilesh Premkumar

Intellectual 595 points

Hu Akhilesh,

I used Command View with the configuration you mentioned and CMD_RADIO_SETUP and CMD_FS are executed with status 0x400 but CMD_ABORT never occurs(smart rf and the board just seem to stop working). I don't know what you mean by "packets are actually being seeing".

Regards,

Matias

0 Akhilesh Premkumar over 3 years ago in reply to Matias Alvarez

Intellectual 995 points

Hi Matias,

Typo, sorry, meant to say that we check that the packets are actually being sent.
The CMD_ABORT never happens if you are using Continuous packet mode.

1. How are you checking for the packets ?
2. You said that it works when you do not configure pa/lna. What signal strength are you getting with this ?
3. I saw your image of the module, do you have a pcb, chip or external antenna ? If you have a pcb antenna, could you press the antenna with your hand and check if the RF transmission works. This is to check the antenna HW(we had a similar issue).

From my test, the cc2652 usually doesnt work without pa/lna configuration and even if does the strength is very bad.

Regards
Akhilesh

0 Matias Alvarez over 3 years ago in reply to Akhilesh Premkumar

Intellectual 595 points

Hi,

I'm not using continous packet mode. Even if I use it i dont see anything in the chart that Smart RF Studio has.

1. Just Smart RF Studio charts. Since I'm in quarantine and working from home I dont have many tools(sniffer, scope, etc) to check whether it is really sending/receiveing packets or not.

2. Yes, when i use default configuration of smart rf studio I can see the chart in continous rx mode. It usually goes from -105dbm to -55dbm(peak). With PA/LNA configuration it stays at -80dbm. But the problem with the transmission is still there.

3. I checked this and nothing changed.

Do you use 802.15.4 mode or propietary mode in Smart RF Studio?

Regards

Matias

0 Akhilesh Premkumar over 3 years ago in reply to Matias Alvarez

Intellectual 995 points

Hi,

I have performed my test on 802.15.4. Ideally the configuration should work.
What setting are you using for Tx Power ?
Are more of the packets near the peak(-55) or the lower limit ?

You can perform a few more tests to check if the PA/LNA are working correctly. If you have a launchpad or any other kind of development board you can use to connect DIO7(PA) and DIO13(LNA) pins to leds and check their state.
During TX the DIO7(PA) will keep turning on and off and similarly for LNA and RX

Check the same with the default configuration and see what happens.

Akhilesh

0 Matias Alvarez over 3 years ago in reply to Akhilesh Premkumar

Intellectual 595 points

More Hi,

The packets are more to the lower limit. I use 5dbm configuration(I think it's default configuration) for Tx Power.

Matias

0 Matias Alvarez over 3 years ago in reply to Ryan Brown1

Intellectual 595 points

Hi Ryan,

I'll be trying a CC2652P in the next few days. Should the same firmware I developed for CC2652R(SDK 3.20) work for it without any new configurations or changes?

Thanks in advance,

Matias

0 Ryan Brown1 over 3 years ago in reply to Matias Alvarez

TI__Guru**** 202096 points

Hi Matias,

Yes, that is correct. http://dev.ti.com/tirex/content/simplelink_cc13x2_26x2_sdk_4_10_00_78/docs/zigbee/html/cc2652p/software-on-cc2652p.html

Regards,
Ryan

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CC2652R: CC2652R with PA + LNA