Hello,
I had some problem with connection test board to “LokalConcentrator” Nucleo Board.
I had tried to run sample from STM32CubeIDE “ LocalNetwork_Concentrator” and “LocalNetwork_Sensor” projects.
We have two NUCLEO-WL55JC1 boards and one test board with STM32WLE5CCU.
One Nucleo board is “LocalNetwork_Concentrator” and another Nucleo board is “LocalNetwork_Sensor”. The test board must work like as “LocalNetwork_Sensor”.
I had modified “LocalNetwork_Sensor” project for test board, had created a new project(for ex. it will be named “LocalNetwork_Sensor2”) in STM32CubeIde( for base project configuration had been used “SubGHz_Phy_PingPong” project).
I hat tested project “LocalNetwork_Sensor2” on Nucleo & test boards, difference is in configuration files(stm32wlxx_nucleo_radio.c and stm32wlxx_nucleo_radio.h).
It works for Nucleo-Concentrator(had “LocalNetwork_Concentrator.bin”) and Nucleo-Sensor2(had “LocalNetwork_Sensor2.bin”), but test board(had “LocalNetwork_Sensor2.bin”) received wrong beacon and couldn’t established connection with “Nucleo-Concentator” board.
For example:
Nucleo-Sensor2 received always 0x010017bb beacon, but test board received different values with some repetition(0x3a310add, 0xfafd2c55 and etc.) For test board were RSSI&SNR values near RssiValue=-43 dBm, SnrValue=-1dB, Nucleo-Sensor2(without antenna) had RssiValue=-62 dBm, SnrValue=8dB, but Nucleo-Concentator have antenna.
I checked also, if test board may be catching another beacon. When I had shut down Nucleo-Concentrator, test board had not catch something and was not output in terminal some beacon data.
For test board configuration(im1.png):
-not supported PB0-VDD_TCX0
-used only RFO_HP, RFO_LP is not used
For Nucleo-Sensor2 used configuration by default.
In “sys_conf.h “are defined
-
APP_LOG_ENABLED = 1;
-
DEBUGGER_ENABLED = 1;
-
LOW_POWER_DISABLE =1 ;
In LocalNetwork_Sensor2.ioc->Middleware->SubGhz_PHY in SubGhz_PHY application tab:
Modemused: LoRa
Region: Region Europe freq. 868
LoRa bandwidth: 0: 125 kHz
LoRa SF: SF11
LoRa CR: 1:4/5
LoRa PREM length:8
LoRa symbol timeout: 5
LoRa fix length payload on: NULL
LoRa IQ inversion: NULL
Payload Length: 64
For testing test board RF configuration(work Radio or not), I had run “SubGHz_Phy_PingPong” project(“SubGhz Tab” configuration are how in LocalNetwork_Sensor2.ioc, but LoRa SF=7) between test board and Nucleo Board. It was worked.
RSSI&SNR values in this case are:
TestBoard: RssiValue=-87 dBm, SnrValue=11dB
Nucleo-PingPong: RssiValue=-84 dBm, SnrValue=12dB
Thank you for your help.
Best regards,
T
Schematic:
