STM32 MCUs Wireless

I'm developing using the STM32WBA65I-DK1. I'd like to know how to implement interrupt handling for button presses. It appears that stm32wba65i_discovery.h does not contain any APIs related to button presses (which is perhaps to be expected since the DK does not have push buttons). The sample code I'm using is BLE_HeartRate_Thread. If you have any source code that might be helpful, please let me know.

Hello,My goal is to wakeup the end node to send a single frame then go to shutdown mode, but I'm having some hard time putting the device in shutdown modeI am calling HAL_PWREx_EnterSHUTDOWNMode(); in LoRaWAN_Process() function, after checking on a successful TxDone state.

Board / SoCBoard: NUCLEO-WB09KESoC: STM32WB09SoftwareZephyr version: v4.4.0-rc2-41-g149c8b1758a8Toolchain / build system: West + Zephyr standard build flowIssue summaryWhen building a very small Zephyr application for NUCLEO-WB09KE, simply enabling:CONFIG_BT=ycan cause intermittent boot failure.The failure happens very early in boot:no UART outputno boot bannerno application printk()main() appears to never run in failed bootsThis happens even when the application does not call any Bluetooth API.Minimal applicationmain.c#include <zephyr/kernel.h> #include <zephyr/sys/printk.h> int main(void) { while (1) { printk("M\n"); k_busy_wait(100000); } return 0; }Minimal project configurationprj.confCONFIG_BT=y CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y CONFIG_EARLY_CONSOLE=y CONFIG_PRINTK=y CONFIG_ASSERT=y CONFIG_ASSERT_VERBOSE=y CONFIG_LOG=n CONFIG_PM=nObserved behaviorWith Bluetooth disabled, the board boots and repeatedly prints:M M M ...With CONFIG_BT=y enabled, boot becomes

Hi, I'm working on a ESL project using STM32WB09. In order to reach greater distances, is it possible to use the CODED PHY ? Thank you

Hey. I currenlty have a wba55 baord and use it as a ble p2p server. The main idea is to put put the board to stop0/1 mode when disconnected so that it consumes some μ amps and turn it back on when receiving a specific interrupt (eg button, timer etc).I tried a minimal bare-metal example, where i turned on every peripheral (uart, i2c etc) i would use on my actual project to monitor power consumption and before sleep mode i de-inited each and every one of them and all interrupt sources other than the specific EXTI line. The thing is that the device seemed like unable to even enter stop mode. I turned off the rf module through mx and it worked perfectly. So from what i understood, the rf module and be in general produces a ton of interrupts which doesn't let the device to stay in stop mode. Is there any way to disable the rf module/ ble during runtime and re enable it once the device wakes up from the intended interrupt source ? 

Hi,I am working with the STM32WB5MMGH6TR and would like to achieve the following:Stream GATT data to a mobile phoneSimultaneously play simple audio to BLE earbudsThe audio requirement is modest: a tone that rises and falls in a sine-wave pattern (no music, no complex audio, no high-quality audio). The frequency should sweep between 500 Hz and 2 kHz, with a modulation rate of up to 60 Hz.Is this feasible using the standard ST BLE stack for the STM32WB5MMGH6TR? The key requirement is that both operations run concurrently.If it is possible, could you please outline the recommended approach?Thank you as always.

Hello,there are different statements on the minimum operating voltage for LoRa operation.STM32WL5-PWR paper says 1.95V,STM32WLE5 ref manual says 1.8V (section 5.3.3 Transmitter).What's correct?

Hello,I am using a STM32WL55 UFQFPN48 in an application. I am only using the high power output (up to +22 dBm) and only plan on transmitting with this device.I want to transmit in the 420-440 MHz range, but there does not seem to be any load-pull analysis data from within AN5457 which would give output impedance at this frequency. I can only find data for higher bands. Is this data found somewhere else? I would like to use it for simulation and calculation.Best

Good day,I want to measure the VBAT voltage of a STM32WL31 using its ADC. I setup the ADC channel as follows using the ST HAL driver:ADC_ChannelConfTypeDef ConfigChannel = {0}; ConfigChannel.Channel = ADC_CHANNEL_VBAT; ConfigChannel.Rank = ADC_RANK_1; ConfigChannel.VoltRange = ADC_VIN_RANGE_3V6; ConfigChannel.CalibrationPoint.Number = ADC_CALIB_POINT_1; ConfigChannel.CalibrationPoint.Gain = LL_ADC_GET_CALIB_GAIN_FOR_VINMX_3V6(); ConfigChannel.CalibrationPoint.Offset = LL_ADC_GET_CALIB_OFFSET_FOR_VINMX_3V6(); if (HAL_ADC_ConfigChannel(&hadc1, &ConfigChannel) != HAL_OK) { Error_Handler(); }I seem to be getting correct ADC measurements (actual=3.0V, adc_measured_&_converted=3.15V), but the detail seems to be sparsely documented in the device datasheet and manual, so I just want to check a few things: Q1: I am not sure how the calibration point number relates to the measurement - when would one use ADC_CALIB_POINT_2 etc? Q2: What is the reference voltage used by the

Good day,I have a simple custom board with a STM32WL31 that needs to cyclically enter DEEPSTOP mode and then wake by means of RTC internal wakeup. It seems the device enters DEEPSTOP, but does not wake from it. Basic setup:Clocked from HSI, RTC clocked from LSE with 32kHz xtal.SMPS not implemented.Basic project generated with STM32CubeMX 6.16.0 with MCU Package for STM32WL3 Series 1.3.0 installed.IWDT activeMR_SUBG radio not yet implemented I can confirm RTC runs, RTC interrupt occurs every 1s, and HAL_PWR_EnterSLEEPMode() behaves correctly. However, when I enter DEEPSTOP with the sequence below, then the code never gets to HAL_ResumeTick() (reset after a few seconds by IWDT): PWR_DEEPSTOPTypeDef sConfigDEEPSTOP; sConfigDEEPSTOP.deepStopMode = PWR_DEEPSTOP_WITH_SLOW_CLOCK_ON; HAL_PWR_ConfigDEEPSTOP(&sConfigDEEPSTOP); HAL_SuspendTick(); HAL_PWR_EnterDEEPSTOPMode(); HAL_ResumeTick(); Below is a reg dump of possible relevant registers just before calling&

I upgrade my project recently to the above firmware (STM32Cube FW_WL V1.5.0)  which ended up not working.Lots of errors, I think mostly because of the introduction of the relay node.After a couple of days trying to get this working I started a fresh project from CubeMX and this did not compile into the STM32WLE5CB. Any idea on what the issue could be?

Dear Team,I have a board contain STM32WBA5MMG and  AD5941. We have provided a single RESET for both the chips.The circuit is given below.May Iknow will this cause any issues. RegardsHiyo

When I followed the link https://wiki.st.com/stm32mcu/wiki/Connectivity:STM32_Sniffer_for_BLE_Setup_guide,I successfully make Neclueo-WB55 be sniffer device while STM32WB sniffer displayed in the wireshark startup page,meanswhile I really capture the BLE advertise packets like this screenshot 1, But come problems,it only capture advertise packet as title said,connection packet like GAP parameters update or CONN_REQ all cannot be captured,how I should do to solve this problem like screenshot 2,

Stm32l010r and s2lp using x cube sub ghz , for custom board just for coding only gpio button status, there are plenty of error, by solving all those 4-5 errors remain and their resolving method is to complete change of middleware files or some code left in file even check through free AI they finally there no such files in middleware add some, for adding it will not compatible with existing file. If tried in stm32wl33cc it also shows so many error but finally there something missing. There are some radio.spi.h and some similar files there in s2lp nucleo example in spirit 2 workshop project, but in s2lp middleware they are not available and look like board specific. If any available example and transmitting and receiving data for s2lp and stm32wl33cc.

I need support for the design of STM32WL30XX PCB Antenna. Are there reference designs available for the PCB antenna?Specifications:Two layer board Output power 10dBm in the 868MHz band.   

Hello,   I am working with STM32WLE5CC and using the LSCO output (configured via HAL_RCCEx_EnableLSCO(RCC_LSCOSOURCE_LSI), source = LSI) to observe the low‑speed clock externally.   In my application: LSI is used as the RTC clock source RTC is used as the wake‑up source from Stop2 mode RTC is configured in binary‑only mode AsynchPrediv = 30 Wake‑up period = 5 seconds   According to RM0461: “The clock on LSCO is available in Run, Stop, Standby and Shutdown modes.” “In Stop 2 mode, all I/O pins keep the same state as in the Run mode.”   This observation is independent of RF RX/TX activity and refers only to the Run ↔ Stop2 transition.   However, on hardware I observe the following behavior: When transitioning from Run → Stop2, the LSCO pin stops toggling for a short time (~104 µs), then resumes. When transitioning from Stop2 → Run, the LSCO pin stops toggling for a longer time (~530 µs) before toggling again. This occurs even though: LSCO is enabled LSI

In testing the LoRaWAN_End_Node_LBM application supplied with STM32CubeWL-1.5.0 release I found that the output power is substantially lower than the same test setup with the LoRaWAN_End_Node application supplied with STM32CubeWL-1.4.0.  This testing was conducted only using the US915 region setting.First I found that the EIRP was being defined as 16 dBm in Middlewares/Third_Party/LoRaWAN/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915_defs.h when it should be 24 dBm.#if defined( LR11XX ) || defined( SX1262 ) || defined( SX1268 ) // region is 30 dBm but radio is 22 dBm ERP (+2 to EIRP) #define TX_POWER_EIRP_US_915 (24) // define in dbm #else // region is 30 dBm but radio is 14 dBm ERP (+2 to EIRP) #define TX_POWER_EIRP_US_915 (16) // define in dbm // TODO must be checked, SX126x dependent for the max power #endifSince the project compiles with the preprocessor symbol -DSX126X the #if condition fails and the maximum transmit power is capped at 14 dBm ERP rather tha

Hi everyone,I’m currently working on a project involving LR-FHSS and I’d like to know whether there are STM32-compatible end devices and gateways that already integrate LR-FHSS-capable radio chips.From what I’ve found so far:End Devices (sensor/node): They must use a chip from the SX126x family.Gateways: They need to be based on the SX1302 or SX1303.Before I start designing custom hardware, I’d like to confirm whether there are existing commercial end devices or gateways that already include these chips with LR-FHSS support.If anyone has experience with this or can recommend specific hardware, I would really appreciate it.Thanks!

Can force a specific DR for LoRaWAN?I tried using: uint8_t custom_dr[7] = {0};custom_dr[3] = 1;lorawan_api_dr_strategy_set(USER_DR_DISTRIBUTION, STACK_ID);lorawan_api_dr_custom_set(custom_dr, STACK_ID);   but did not work.

I'm designing a custom board that's based on the STM32WL55CCU6 microcontroler. It's very simple and is required to transmit data continuously in vectors of 12 uint8_t elements, using the LoRa protocol configured to the standard values: 915MHz, CR 4/5 and 500kHz bandwidth. Prior to that I had tested some code in a pair of NUCLEO WL boards, which worked just as expected, so I based my circuit on the NUCLEO, simplified to remove unused features. A capture of the schematic is provided below.The code used was based on an example by ST's package STM32Cube_FW_WL_V1.3.1, specifically the SubGHzPhy Ping Pong for STM32WL55JC. After making sure that the basic parts of the circuit were working right (stable supply, uart, etc.), I used the code below, adapted from the one I tested with the NUCLEOs, but after many attempts I still couldn't get it to work. The interrupts are never triggered, transmission and reception of data won't work even with the other device close to the board. What are the

Hi,We are currently developing a solution based on the STM32WBA65RIV6 MCU, and we would like the internal RTC to remain active while the MCU is powered down.We assume that this is possible, and we would like to clarify the following points:For how long does the RTC retain its values after the MCU is powered down (by default)?Is it possible to connect a backup capacitor or battery to supply only the RTC or part of the MCU in order to extend the retention time?We also want to know if there is any documentation available on this topic. We have not been able to find detailed information.Thank you in advance.Best regards,Luis

Hello,I am currently working with the STM32WBA65RI for BLE Direction Finding using connectionless mode. I would like to know if it is possible to use a low-power mode such as Standby with RTC, allowing the board to consume only a few nanoamps, then wake up periodically via the RTC, perform advertising for a defined period, and return to Standby mode.Could anyone provide guidance or share experience with this approach?Best regards.

Hi everyone,I designed a first custom PCB using the BlueNRG-2N as a coprocessor, and everything was working fine, I was able to control it with my main MCU over SPI without any issue.Recently, I made a new version of the board where I replaced the BlueNRG-2N with the BlueNRG-M2SP module. I flashed it with the DTM firmware (BLUENRG-M2SP_DTM_SPI.hex) because I want to use it as a coprocessor.I’m using exactly the same software as before for my main mcu (which should work), but now it doesn’t work at all : I don’t receive any data on the SPI MISO line from the BLE module.I’ve attached both the old (working) and new designs. Since the firmware works with the BlueNRG-2N, I assume the issue is hardware-related. What could be wrong in my new design? Or what changes are required for the software ? Also, I have a couple of additional questions:1- There are multiple DTM firmware versions available (e.g. BlueNRG-M2SA_M2SP_DTM_Stack_v2.1c, v2.1e, and several others in the BlueNRG-1_2 DK 3.2.3