Re: about BLE Rx test
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Tommy Lin (林志聰) <Tommy.Lin@...>
Hi Stephanos, Thanks for your response. I have following question: 1. By Default , What data rate (1M or 2M bps) are set in zephyr code ? if it is 2Mbps , How can I set it to 1Mbps?
PS: Our RF equipment only support in 1Mbps.
Thanks Tommy From: Stephanos Io <assembler@...>
Sent: Tuesday, November 12, 2019 9:51 PM To: Cufi, Carles <carles.cufi@...>; Tommy Lin (林志聰) <Tommy.Lin@...>; zephyr-devel@... Cc: devel@...; Chettimada, Vinayak Kariappa <vinayak.kariappa.chettimada@...> Subject: RE: [Zephyr-devel] about BLE Rx test
Hi,
I suppose you are performing RX sensitivity test.
> If RF equipment send a dbm above -86 (ex: -85 , -84 , -83 …..), the error message will disappear.
Assuming you are testing with BLE 2Mbps PHY, I think this behaviour is only to be expected given that the max. sensitivity is specified at -85 dBm at 2Mbps for nRF51824 (refer to the datasheet).
Stephanos
From:
devel@... <devel@...>
On Behalf Of Cufi, Carles
Adding Vinayak.
If this depends on the dBm setting it might be a bug actually. I’ll let Vinayak weigh in.
Carles
From:
devel@... <devel@...>
On Behalf Of Tommy Lin (???) via Lists.Zephyrproject.Org
+ jimmy
From: Tommy Lin (林志聰)
Hi , Sorry , correction.
We have a product using nRF51824 with Zephyr v1.13.0. Our DUT connect with RF equipment.
[Test sequence] Step1: DUT enter Rx mode with HCI command. Step2: RF equipment send 1500 bytes with -86dbm. Step3: DUT end Rx mode After then , DUT will show “tx time out “ error message.
PS: 1. If RF equipment send a dbm above -86 (ex: -85 , -84 , -83 …..), the error message will disappear. 2. We use Zephyr v1.13.0 and v1.14.0 , and the result is the same.
Could you give us some suggestions?
Thank You, Tommy
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