NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

RE: NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

Kaja — Fri, 02 Jul 2021 09:12:31 GMT

Hi,

could you try again with 11.0.0?
Are you sure that you have not included something in the code in 11.0.0 that you have not included in the other once?

For the newest DTM, from SDK 17.0.2, include the fix:

In ble_dtm.c. line 1305:

m_packet_length = (parameter && LE_UPPER_BITS_MASK) << LE_UPPER_BITS_POS;

change to :

m_packet_length = (parameter & LE_UPPER_BITS_MASK) << LE_UPPER_BITS_POS;

Your missing a matching network for the antenna, and you might have other improvements you can do in your design, but then I need to see the layout:

But you have used the same HW for all the tests.

Could you try to do the communication the other way, change the placement if TX and RX?

Best regards,
Kaja

RE: NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

jtzhang — Wed, 30 Jun 2021 08:35:57 GMT

Hi , Kaja :

I have try with DTM from SDK v16.0.0, SDK v15.3.0, SDK v14.2.0 ,SDK13.1.0, but the problem still exsit.

As the following screen shot, In single channel mode, The current cosumption is normal or not ?

I am using following schematic, is there something wrong ?

I have saw PCA10040 Demo schematic, is it working in DC/DC mode when running DTM? If running DTM in LDO mode , how to change code?

RE: NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

Kaja — Tue, 22 Jun 2021 11:34:50 GMT

Great!

Best regards,
Kaja

RE: NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

jtzhang — Tue, 22 Jun 2021 01:24:37 GMT

Hi Kaja:

Thanks for your reply, I can try with DTM from SDK v16.0.0

RE: NRF52832 ,SDK 17.0.2 ,DTM , data lost in single channel mode

Kaja — Mon, 21 Jun 2021 09:29:30 GMT

Hi,

can you see if it's fine with DTM from SDK v16.0.0 ?

Best regards,
Kaja