AIROC™ Bluetooth Forum Discussions

Hi

I am using the cyw20706 chip

and utilizing the wiced-studio SDK to implement the SPP profile using SDP and RFCOMM.

 

During testing, I found an issue with BT USB dongle connection that did not occur when using a mobile phone.

After the initial connection between the BT dongle and the cyw20706 chip, there is an issue with reconnection.

Upon checking the airlog, it was observed that the SDP is disconnected by the module after 30 seconds, and subsequently, reconnection is not possible.

 *BT USB Donlge : Laird BT900-US

 

This phenomenon is not observed when connecting with a mobile phone and cyw20706.

 

After comparing and analyzing the airlog of the device experiencing reconnection failure with the one operating normally (smartphone), it has been determined that when the cyw20706 sends an SDP disconnect request, channel creation for SDP and RFCOMM requests does not occur again, leading to reconnection failure.

Can you explain why this phenomenon is occurring?

Is this a compatibility issue with the chip?

Is there a way to establish a new connection for SDP during reconnection using the cyw20706 SDK?

Thanks..

Hi,

I would like to do a HID over ISOC test by connecting two CYW20829 KITs. Could you please provide me with any relevant guides or instructions on how to do this?

Thanks.

Hi IFX,

Does the VDDC RESET written in the Datasheet refer to RST_N?

Thank you.

Best Regards,
Peggy

I got a CYW920829M2EVK-02 CYW20829 bluetooth le soc evaluation kit and i'm trying out some example projects but i have issues using the BSP

first i need to get it locally, but if i need to add anything to the bsp it doesn't work

trying to pen it with bsp-assistant i get

Loading BSP...
Finding the mtb-template-cat1 (release-v1.0.0) asset...
ERROR:This BSP does not have .mtbx files. Please use BSP Assistant or Project Creator to create the starting BSP.
mtb-template-cat1 asset found at .../.modustoolbox/global/mtb-template-cat1/release-v1.0.0 (0 ms)

how can i work with this bsp and the projects it supports, how can i update it with libs/components that some projects seem to need?

for example i'm trying mtb-example-btstack-freertos-findme, which i think is the original firmware it came with

after manually adding the bsp and the libs i need for the project, i need to add some more stuff to the BSP like some capsense stuff and psoc6-middleware i think

after "make getlibs" and "make build" i get the following error at the moment 

make build
Tools Directory: .../ModusToolbox/tools_3.1
Searching installed tools in progress...
Searching installed tools complete
Initializing build: mtb-example-btstack-freertos-findme Debug CYW920829M2EVK-02 GCC_ARM
Prebuild operations complete
Auto-discovery in progress...
Auto-discovery complete
Commencing build operations...

Tools Directory: .../ModusToolbox/tools_3.1

Constructing build rules...
Build rules construction complete

==============================================================================
= Building application =
==============================================================================
Generating compilation database file...
-> ./build/compile_commands.json
Compilation database file generation complete
Building 224 file(s)
    Compiling app file cybsp_bt_config.c
In file included from ../mtb_shared/mtb-pdl-cat1/release-v3.4.0/devices/COMPONENT_CAT1B/include/cyw20829b0lkml.h:152,
                 from ../mtb_shared/mtb-pdl-cat1/release-v3.4.0/devices/COMPONENT_CAT1B/include/cy_device_headers.h:37,
                 from ../mtb_shared/mtb-pdl-cat1/release-v3.4.0/devices/COMPONENT_CAT1B/include/cy_device.h:16,
                 from ../mtb_shared/mtb-pdl-cat1/release-v3.4.0/devices/COMPONENT_CAT1B/include/cy_pdl.h:30,
                 from ../mtb_shared/mtb-hal-cat1/release-v2.4.1/include_pvt/cyhal_hw_types.h:90,
                 from ../mtb_shared/mtb-hal-cat1/release-v2.4.1/include/cyhal_gpio.h:89,
                 from ../mtb_shared/btstack-integration/release-v4.4.0/COMPONENT_BTSS-IPC/platform/include/cybt_platform_config.h:31,
                 from bsps/TARGET_CYW920829M2EVK-02/bluetooth/cybsp_bt_config.h:30,
                 from bsps/TARGET_CYW920829M2EVK-02/bluetooth/cybsp_bt_config.c:23:
../mtb_shared/cmsis/release-v5.8.0/Core/Include/core_cm33.h:140:8: error: #error "Compiler generates DSP (SIMD) instructions for a devices without DSP extensions (check __DSP_PRESENT)"
  140 |       #error "Compiler generates DSP (SIMD) instructions for a devices without DSP extensions (check __DSP_PRESENT)"
      |        ^~~~~
make[1]: *** [../mtb_shared/core-make/release-v3.2.2/make/core/build.mk:268: .../mtw/Bluetooth_LE_Findme/build/CYW920829M2EVK-02/Debug/bsps/TARGET_CYW920829M2EVK-02/bluetooth/cybsp_bt_config.o] Error 1
make: *** [../mtb_shared/core-make/release-v3.2.2/make/core/main.mk:374: secondstage_build] Error 2

I want to transfer data in UART format over BLE from PSoC-4 BLE to PC without using a Cypress BLE dongle at the PC-side. I am wondering if its possible. 

Note: I have tried out BLE UART Code in github to transfer data from PSoC-4 BLE to PC with the help of a BLE dongle at the PC side. Want to know if I can do the same without the dongle.

In the AIROC HCI UART Control Protocol Document, where an example HCI protocol is outlined, it describes the HCI Commands required for a reset, featuring the HCI_RESET, DOWNLOAD_MINIDRIVER, WRITE_RAM and LAUNCH_RAM commands. Some of these are vendor specific and some are generic. Could anyone point me to the documentation which outlines these commands?

Thanks,

Chris