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I've got some more information.
I converted the SDK's radio_test to run on both the nano2 and the
The nano2 is transmitting continuous carrier (test "c") on 2402 and the
nitrogen on 2426. TX power is -4 dBm. The data rate is 1M.
The attached sample was from ubertooth-specan-ui. Lots of jitter at
2426 with both nitrogen boards.
On Mon, 2017-09-18 at 05:04 +0200, Vinayak Kariappa wrote:
Good. You have clarified that indeed radio h/w is live and kicking.
May be something around the antenna matching is bad that only some
peer see the transmissions.
I can be suspicious that the Factory Configuration Information is
probably erased (like a full erase done using nrfjprog). You can
check if the identity address printed on "init" in shell application
remains same after power resets, if so, then I have no more ideas.
Few of us are available at #zephyrproject on freenode.net, in case
you prefer to IRC.
On Fri, Sep 15, 2017 at 7:27 PM, Steve Brown <email@example.com>
On Thu, 2017-09-14 at 19:54 +0000, Chettimada, Vinayak Kariappa
Ok, so the CPU and UART works :-)
Hello and blinky work. BT does not.
And, the 32KHz clock domain works, hence the blinks.
Now, CPU can run from internal High Frequency RC or External
If your 32MHz crystal on the board has dry solder (or what everhas
happened), then most probably internal RC remains to clock theSoC.
But 2.4GHz radio will not be 2.4GHz.DTM
Zephyr v1.9 has Radio Direct Test Mode implementation, hci_uart
sample can be used with DTM HCI commands to test the radio. The
HCI commands will fail to respond if the HF clock cannot sourcefrom
a stable crystal.leas
And, yes nitrogen_beacon.hex from http://builds.96boards.org/re
es/nVery unlikely (and likely based on conditions), I use nRF51
itrogen/zephyr-1.8/ flashed to the nano2 advertises. There's no
output as I explained previously.
I'm now more convinced that the devices somehow got damaged in
over 5 years now, carry it around in bare hands, worst I havedone is
to have my 32KHz crystal go out of its spec. but BLE operationalexpect
using the 32KHz RC.
I'll report when I get the ones I ordered from Digikey. I
to work just fine.
If you are curious about what happened to the radios, I'd be
toI think Seeed need to contact our support (I am just a software
send you the 2 I got from Seeed.
These tests were run using tests/bluetooth/shell.
The shipment didn't seem to have been opened. I'm pretty ESD
at my end.
I found and fired up an ubertooth. The 3 advertising freqs are spot
Whatever is on the air isn't decoded by ubertooth-btle or bluez w/
CSR (0a12:0001) dongle.
So, I tried your iOS nRF connect app. It picks up the
can also connect from my iPhone.
All 3 applications function with the nano2.
Next I tested with a rpi3. It sees the advertisements and can also
connect to the nitrogen. Curiously, ubertooth picks up the SCAN_REQ
from the rpi3, but not the responses from the nitrogen. All the
are within 1 meter of each other.
So, I have 2 apps (nRF connect & rpi3) that see what the nitrogen
on the air and 2 apps (ubertooth & x64 w/ bluez & CSR dongle) that
Firmware version: 2017-03-R2 (API:1.02)
ubertooth 2017-03-R2 (dominicgs@hydrogen) Mon Mar 13 16:09:02 MDT
x64 w/ bluez: V5.47
nRF Connect: V1.7.5
rpi3: raspbian Linux raspberrypi 4.9.43-v7+ w/ bluez V5.43
Can you think of any possible explanation?
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