loop-through, nRF52480-dongle on PC-COM, nRf5340_DK on UART, fast on BLE

[TF mulder]

Hi,

Im using:
nRF Connect 1.9.0, Visual Studio Code.
I have:
a nRF52480-dongle
a nRf5340_DK

I would like to have Samples (code), to have a loop through with the highest possible througput speed (using PHY 2Mhz)

(sample-code for) a BLE-Central on the nRF52480-dongle, with the USB-connector as COM access (not via UART on GPIO-pins, that must be connected to pins on the nRF52480-dongle)
(and it is preferable, that the BLE-Central is capable, to address more BLE-Peripherals)

(sample-code for) a BLE-Peripheral on the nRf5340_DK, where a UART-is used.

Then have a loop-through set up in the following manner:
PC(send) -> USB-CDC TX -> BLE-Central sending => --air-- => BLE-Peripheral receiving -> Uart-TX
connection on Peripheral UART-TX connected to UART-RX
Uart-RX -> BLE-Peripheral sending => --air-- => BLE-Central receiving -> USB-CDC-RX -> PC(receive)

The questions are:
1) What sample is needed for the Central to be used on the nRF52480-dongle (with COM access, via the USB-connector)
2) What sample is needed for the Peripherall to be used on the nRf5340_DK (with Uart GPIO connections)

Best Regards,
Theo

PS: i already have seen/used the througput-sample (is fast but only from central to peripheral), the NUS-central sample(is not fast and works using uart) , the NUS-peripheral sample(is not fast).
and seperately i have seen/used the CDC_acm sample on the nRF52480-dongle

[Amanda Hsieh]

Hi, 

i already have seen/used the througput-sample (is fast but only from central to peripheral), the NUS-central sample(is not fast and works using uart) , the NUS-peripheral sample(is not fast).

You can refer to the prj.conf to add into NUS-central/peripheral. 
For nRF5340, it also needs https://github.com/nrfconnect/sdk-nrf/blob/main/samples/bluetooth/throughput/child_image/hci_rpmsg.conf 

Regards,
Amanda

[TF mulder]

Hi Amanda,

Thanks for a first answer, but is only a partial answer

my original questions are:
1) What sample is needed for the Central to be used on the nRF52480-dongle (with COM access, via the USB-connector)
2) What sample is needed for the Peripherall to be used on the nRf5340_DK (with Uart GPIO connections)

Looking forward to an answer on this, thanks in advance.

Best Regards,

Theo

[TF mulder]

Hi Amanda,

Thanks for the advices. For the central on dongle i wil use a nRF52480_DK, to try to add a USB CDC into the Central-Uart, and than try to build for the dongle (hope that will work).

But still its a shame that there is no complete ready solution. I would think a lot of people would like to have that as samples to have a quicker start.

Best Regards,

Theo

[Amanda Hsieh]

Hi,

Thanks for the feedback. I will report to the internal. Since we move from nRF5 SDK to NCS, we are still working on importing and developing the examples in NCS. Sorry for the inconvenience. 

-Amanda 

[TF mulder]

Hi Amanda,

Ok thanks.

I started to try to combine the samples: central_uart  and cdc_acm

I added the items of the cdc_acm.prj.conf into the central_uart's prj.conf..

Then  i started to merge items of cdc_acm main,c  into central_uart's main.c

on top the merged *.h files..

this already does not build, it seems to have problems with 

#include <usb/usb_device.h>

the first error of the build is:

In file included from C:\ncs\v1.9.1\zephyr\include\usb\usb_device.h:43,
from c:\Projects\NordicSemi\nRF52840DK\central_uart\src\main.c:50:
C:\ncs\v1.9.1\zephyr\include\logging\log.h:417:3: error: redefinition of '__log_current_const_data'
417 | __log_current_const_data __unused = \
| ^~~~~~~~~~~~~~~~~~~~~~~~

then i tried to merge items of the  CMakeLists.txt    (but dis not resolve this error)

How to combine samples?  What procedure to follow?  Maybe some pointers/documentation.

like:  how to handle, combining of  e.g.

in main.c:

LOG_MODULE_REGISTER(LOG_MODULE_NAME);

LOG_MODULE_REGISTER(cdc_acm_echo, LOG_LEVEL_INF);

Best Regards,

Theo

[Amanda Hsieh]

Hi, 

You can take a look at Modifying an application and Adding your own code doc. For the LOG MODULE, you can see Logging in a module. 

This might help USB CDC ACM extension, you could build with prj_cdc.conf. 

-Amanda

[TF mulder]

Thanks Amanda.

Great pointers :-)

Best Regards,

Theo