STM32 MCUs Wireless

Hello, I am using STM32H735 and installed a Bluetooth module STM32WB05N. For the STM32WB05N, it is configured as a transparent mode running as HOST + CONTROLLER firmware.  I got the firmware from this github: STM32WB05N Firmware. I have modified STM32WB05N firmware to use the correct PINS and adjusted the baudrate to work with our MCU STM32H735. So from STM32H735, I have successfully sent the ACI & HCI commands and is able to advertise my device.  I am using my Laptop to try and pair it using the windows bluetooth built in app and when I tried to pair my device, I got a confirmation from my STM32H735 and received the following events HCI_LE_ENHANCED_CONNECTION_COMPLETE_EVENT HCI_LE_ADVERTISING_SET_TERMINATED_EVENT HCI_LE_CHANNEL_SELECTION_ALGORITHM_EVENT After that the windows pairing failed.  I was expecting to receive more events and vendor events like: HCI_LE_DATA_LENGTH_CHANGE_EVENT ACI_ATT_EXCHANGE_MTU_RESP_EVENT ACI_GATT_SRV_ATTRIBUTE_MODIFIED_EVE

Hi all,I am able to generate an SFI image via the trust package and I am using a HSM card to attempt to program a STM32WBA55. As far as I understand is that during provisioning TZEN is set and RDP level is set to 0.5.Reading various documents such as the ref manual (section boot modes) and the an4992 on section 3.3.2.1 it states "The OEM internal firmware can be built to start at the beginning of the user flash memory (starting address0x0800 0000). After a SFI, the SRAM is fully available for OEM."It is not clear to me if it actually works once TZEN remains set after the SFI process. Can I just provision my non-secure application? My goal is to reach RDP level 2 once my option bytes are applied and have under control what happens at the contract manufacturer site.Thank you very much,best,Ivan         

-------------------------------------------Board: STM32 WB55RGOS: Ubuntu 25.10 questingKernel: x86_64 Linux 6.17.0-6-genericSTMCubeProgrammer Version: v2.21.0-------------------------------------------I recently noticed that my board was not being flashed with the following error:No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug AuthenticationI tried connecting the board using the STM32CubeProgrammer and while the board is recognized correctly by ST-LINK (the serial number shows up) I still cannot connect the board because of the same error.When the issues started to occur, I was using my board normally with the usual code running when the board suddenly stopped providing power to the pins; I was using the board to power an external device using the 5 V pin, but my meter only measures about 1 V across the 5 V pin and GND and 200 mV across 3.3 V and GND.Connecting the board still shows bicolor LED blinking and the LED 4

Hello everyone,I’m currently working with the STM32WL55 and using the Ping-Pong example as a reference for my application. The example is great and helps me understand how the process scheduling works, but I want to modify it to transmit ADC data.The issue is that I cannot use the ADC properly within the example as it is. I would like to know if it’s compatible to integrate ADC readings (single-shot or interrupt-based) with this Ping-Pong structure, and what the best approach would be to read the ADC values and send them over UART or another interface without blocking the main loop or interfering with the Sub-GHz radio.Any advice or examples of integrating ADC acquisition into this Ping-Pong example would be greatly appreciated.Thank you!

Hello,I am exploring the STEVAL-25R200A, and I want to build a pollingTagDetect application, using  NFC10A1_PollingTagDetect that comes with the X-CUBE-NFC10 package, in STEVAL-25R200-STM32G0B1.ioc but i can't get it to work.When i flash the code into the steval, this prints in the com4 port:Welcome to X-NUCLEO-NFC10A1Toggling Wake Up mode ONAnd that's it, nfc tags are never detected.I made sure to update the IPs for the ones that STEVAL-25R200-STM32G0B1.ioc includes. The steval works just fine in ST25R200 EVAL GUI and ST25PC-NFC GUI.I appreciate your help

Hello,I am using the Nucleo STM32WB55 board and noticed that when I press the user button, the interrupt service routine (ISR) is triggered only after about 3.5–4 seconds. This delay occurs even before reaching the callback function — the ISR itself is reached late.I have not initialized or configured any BLE stack functionality; this is just a basic GPIO interrupt setup. I have also used other Nucleo boards and never experienced this kind of delay.Has anyone else encountered this issue or found a solution?Thanks,Shreyas

I am currently working with an STM32WB05N as a co processor to a STM32U5, but I think the basic flow should be the same for all WB products. But I didn't find an AN or example for it.My device is acting as a central and connecting to a (WB55 based) peripheral which uses aci_l2cap_connection_parameter_update_req. My central receives this though aci_l2cap_connection_update_req_event. So far so good.But now I want to accept the proposal with aci_l2cap_connection_parameter_update_resp using the same parameters received through the request and Min_CE_Length as well as Max_CE_Length using the same values I used for the original connection opening (and 0x01 for accept). But I get a 0x12 BLE_ERROR_INVALID_HCI_CMD_PARAMS.What am I doing wrong? (and is there example code for connection update somewhere?)uint8_t s_Identifier; uint16_t s_Connection_Interval_Min; uint16_t s_Connection_Interval_Max; uint16_t s_Max_Latency; uint16_t s_Timeout_Multiplier;

Hi,I'm working with an STM32WB5MMG. I need to use both USB and BLE. I see that there are some threads opened about problems regarding the use of both USB and BLE in the same project due to the HSI48. However, I added LL_HSEM_1StepLock(HSEM, 5) to prevent the CPU2 to disable the HSI48 oscillator when it does not use anymore the RNG IP. It was working until I add all the peripheral. I report my main code.Someone has suggestion?Thanks.int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* Config code for STM32_WPAN (HSE Tuning must be done before system clock configuration) */ MX_APPE_Config(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* IPC

Hello ST Community Team. First of all, I want to thank you for the new AI plug-in. It is really helpful specially will looking for informations on the STM32 documents. We hope to have the same for other ST products. About the Typo, on the Table 1 of the RM0434, we have a reserved region between SRAM1 and SRAM2a (from 0x2000 3000 and 0x2002 FFFF) this region is included on the SRAM1 (between 0x2000 0000 and 0x2002 FFFF) so it should be mentioned if it is reserved or not g(more details needed) also the size is 180Kbytes and not 36KBytes as mentioned on the Doc.please have a look at this.Best Regards.II

Hi everyone,I'm working with a custom board based on the STM32WB55, and I'm facing a very strange issue with the Bluetooth Low Energy advertising. BLE advertising works perfectly when the board is running under debugger (SWD debug mode), wireless stack is correctly updated and option Bytes remain as programmed even after power cycling. CPU2 starts, and aci_gap_set_discoverables() returns BLE_STATUS_SUCCESS.The problem is, when I remove the debugger and simply power-cycle the board (i.e. unplug power supply usb cable and replug it), BLE advertising does NOT start.Do you have any idea of how to fix this problem?Thank you

I want to put my STM32WB05 into sleep mode and utilize the Bluetooth wakeup feature to wake it up. I have not found much information about this online, and was curious if it can be set up in the IOC or if it needs to be added manually?

I am trying to debug code for Nucleo-WL55JC1 board using sample code from the STM website.  It is the LoRAWAN_End _Node.  I complies fine and creates .elf file.  However when a try do download with the STM32Cube I get the following error: An internal error occurred during: "Launching LoRaWAN_End_Node".'com.st.stm32cube.ide.mcu.toolchain.IToolChainInfoProvider[] com.st.stm32cube.ide.mcu.toolchain.ToolChainHelper.getToolChainInfoProviders()'   Thanks for the help.

I would like to use the STM32WL33 as a radio receiver and continuously transfer all I/Q samples to my computer for further processing.Also, I want to use the highest possible IQ sampling rate (CHF_E = 0,  500k IQ samples per second = 64 Mbit/s).I've managed to configure it to IQ receiver mode, have it write samples to the databuffers in RAM and output the buffers via USART once both are full.However, I want to record more samples than would fit in the RAM and thus I have to somehow output the buffers faster than they are filled (or equally fast)This is where I've encountered a bottleneck. None of the STM32WL33's interfaces (SPI/USART/I2C/...) can transfer data fast enough, the highest I found is SPI with 32 Mbit/s. So how can I output 64 Mbit/s worth of samples?My idea would be bitbang a parallel interface on the GPIO ports and use another MCU (with a higher clock rate) to convert it to USB or some other serial interface. However, I'd like to know if theres a better way to ac

Hello,I am working with the STM32WL55CC (48-pin package). When I imported the official STM32CubeWL example projects from ST, I noticed that they provide both SINGLE CORE and DUAL CORE versions. But the board that these examples are listed under STM32WL55JCIX, which itself is a DUAL CORE device.However, when I create a new project in STM32CubeIDE for the same device (STM32WL55JCIX), CubeIDE always generates a Dual-Core project structure (with CM4 and CM0+ folders). There is no option to generate a Single-Core project, even though the example projects clearly include one.Also, the file structure of the official examples is very different from the structure generated by CubeIDE. Following the tutorials, example projects contain folders like Application/, Utilities/, and files like se-identity.h, But I am not able to find "se-identity.h"Since I am developing for the STM32WL55CC (48-pin) variant, I am having trouble understanding how to properly port the example code (which i

Hello,I recently updated my CubeMX version from v6.14.1 to the latest, and am no longer able to open the .ioc file. Selecting "continue", results in attempting to unzip DB.6.0.141.tar.bz2 where it hangs until failing.Selecting "migrate" results in the following error, "Range [14, 2) out of bounds for length 2".My team is seeing this issue on Windows and Linux.

Hi ST community,I wanted to develop BLE application using the nucleo stm32wb55rg and the zephyr project v4.3.0. what i did is take a nucleo stm32wb55rg board first i upgraded the FUS from the STM32Cube/Repository/STM32Cube_FW_WB_V1.23.0/Projects/STM32WB_Copro_Wireless_Binaries/STM32WB5x/stm32wb5x_FUS_fw_1_2_0.binthen after this i updated the wireless stack firmware with this one STM32Cube/Repository/STM32Cube_FW_WB_V1.23.0/Projects/STM32WB_Copro_Wireless_Binaries/STM32WB5x/stm32wb5x_BLE_HCILayer_extended_fw.bin.after this i power cycle the board, which is required for the wireless stack to load.after that i build a sample from the zephyr v4.3.0 buluetooth samples "Peripheral_dis sample"i build it for the nucleo_wb55rg board and flash it, the flash logs can be seen below.after this i connected a serial terminal to view the logs and the logs can be seen below. the zephyr is unable to communicate with the wireless stack with error timeout.i have tested this setup with multiple wireless st

I am getting the same problem with my nucleowb05kz board  

Hello,I’m new to ST boards and currently working with an STM32WB09.My goal is to make the board recognized as a BLE HID Gamepad, including an analog joystick.To get started, I used the HID Mouse example from the library.I managed to modify the HID report to match a gamepad descriptor, but I still can’t get my joystick inputs to be detected.Does anyone have any suggestions, examples, or checks I should perform regarding:reading the joystick (ADC),integrating the axes into the HID report,or the BLE configuration on the STM32WB09?Thank you in advance for your help.

I’m working on an STM32WLE5 device and I’m facing a reproducible issue when enabling Read-Out Protection level 1 (RDP = 1). When RDP = 0, everything works as expected: i can write/read RTC Backup registers, my initialization sequence behaves correctly.However, as soon as I set RDP = 1, the firmware can no longer access the backup domain: Any attempt to write Backup registers fails, even with SWD completely disconnected  The strange part: If I disconnect VBAT (short it to GND to fully drop the backup supply), everything works again — even with RDP = 1.After removing VBAT and letting the backup domain fully reset, my firmware can again access backup registers normally.This strongly suggests that the Backup Domain remains in a “protected” or “locked” state after enabling RDP, and can only be reset by removing VBAT.My problem is that we have a supercap soldered on the vbat pin, and we cannot shortcircuit it during production. Any help? Thank you

Hi everyone,         I’m facing an issue with power consumption on my custom PCB that uses the Wio-E5-LE module. According to the datasheet, the module should consume around 2.1 µA in sleep mode, but my board is drawing around 88 µA instead. I’ve double-checked everything and can’t find any other source of leakage.What i have already checked,Disabled all unused peripheralsConfigured all GPIOs properlyVerified there are no shorts or solder bridges on the PCBMeasured current draw of other components — none show any noticeable leakage  

Hello,We have an issue with the B-WL5M-SUBG1 evaluation board: The idle current consumption is higher than expected: 89 uA (vs. expected: 1-2 uA) after joining (OTAA) successfully.Board: B-WL5M-SUBG1Firmware: STM32CubeWL/Projects/B-WL5M-SUBG1/Applications/LoRaWAN/LoRaWAN_AT_Slave and STM32CubeWL/Projects/B-WL5M-SUBG1/Applications/LoRaWAN/LoRaWAN_End_NodeFirmware version: STM32CubeWL V1.3.0 (latest from https://github.com/STMicroelectronics/STM32CubeWL)Power supply: 5 V via USB-C adapter boardCurrent measurement: STM32WL5MOC, not including sensors, measured at IDD jumper (JP2) using JoulescopeDo you have an idea what could be the issue?Thanks!

Hi,I am facing a strange reset-related issue on my STM32WLE LoRa boards involving the SUBGHZ radio and the RF switch.My application sometimes needs to trigger an NVIC_SystemReset() or I reset the board through the NRST pin.However, a reliable reset only occurs when the SUBGHZ radio is explicitly placed into Standby mode and both TX and RX lines of the external RF switch are turned off before the reset.Here is what I observe:Working sequencePut SUBGHZ radio into Standby modeDisable the RF switch (TX = OFF, RX = OFF)Call NVIC_SystemReset()→ After reset, execution always starts correctly at flash address 0x08000000 (line 0 of my application).Non-working sequenceCall NVIC_SystemReset() while the SUBGHZ radio or RF switch is still active→ The system reset seems to occur only partially:• the CPU resets (peripheral turns visibly off), but• execution does not jump to the reset vector at 0x08000000 For the NRST-Pin. According to the reference manual, this pin needs to be pulled down for at

Hi,The memory address of the AH1B is being referenced on the memory block as 0x4000 0000 (page 67) but further in the documentation it is referenced as 0x4002 0000 (page 69) Please open an internal ticket for doublecheking and possible fix on the nex Rev. Best,Alessandro 

The STM32WL5MOC component is both LoRaWAN and Sigfox verified. I need to be able to use both types of connections. AT commands for LoRaWAN are readily available. Is there a guide of AT commands for Sigfox and an AT command to switch between modes? Thanks.

Hello ST Community,I am currently working on a ZigBee communication project using the STM32WB55RG microcontroller. My goal is to establish ZigBee communication between the STM32WB55 (running ST ZigBee stack) and an external Digi ZigBee module (for example, ZigBee Series 3 ).Before proceeding, I would like to confirm the following points:Feasibility:Is it possible for the STM32WB55 ZigBee stack (ZigBee 3.0 based) to communicate directly with a Digi ZigBee module over-the-air, assuming both are configured on the same ZigBee channel, PAN ID, and security settings?Technical References:Are there any application notes or examples that describe interoperability between STM32WB ZigBee and third-party ZigBee devices (such as ZigBee )?What ZigBee profiles or device roles (Coordinator / Router / End Device) should be configured for best compatibility?Roadmap / Implementation Plan:My current plan is:Use STM32WB55 as a ZigBee Coordinator or Router (using ST ZigBee stack ).Use the Digi ZigBee module