Solved

Hello,I'm new to STM32 and trying to learn exciting stuff. I want to light a single LED from my WS2812B strip. For example I will choose 6th LED on my computer and 6th LED on strip will light up.But I'm not sure where to start. How can I access to single LED address? And how to get it work with STM32?Thanks in advance.

Hello, I'm using lwIP and I try to change DEFAULT_THREAD_STACKSIZE But where it applies ? I have my code under version control but I don't see any change ... and I don't see "lwIP" thread, maybe EthIF ? 

Hello All,I am using STM32H533 series controller in our application and trying to read internal MCU temperature reading using ADC. But not getting value properly can any one please help me and provide sample example that support for STM32H5 series to read internal MCU temperature?Any help most appreciate and thanks in advanced...!!

I want to have BLE Custom Client/Server in Application FW? Does it support that?Is it possible to have clinet and server in same FW ?If yes,STM32WB15CC Which BLE Wireless Stack FW should I use full or Exteneded?What is advantages and disadvantages of both features?

I am using a custom PCB with stm32g474 and I am trying to get the CAN peripheral working. I believe I have everything set up correctly (bit rate, RAM etc) but when I call HAL_FDCAN_AddMessageToTxFifoQ(), FIFO is full error is raised after 3 iterations.Any help is appreciated.

Hi, I use a PCB that is reduced to one STM8AF5288 and 3 100nF Capacitors. No other components, all are removed. I supply it with 3,3V. I want to reduce current consumption in halt-mode to 4,5uA. Some others posted simliar problems, I could never find a working solution. My current consumption in halt mode is:350uA at 3V550uA at 3,31050uA at 3,7Here is my code, can anyone please help? I am really in trouble.Thank you very much,Holger void main(void) { CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8); // 2 MHz GPIO_Init(GPIOA, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT); GPIO_Init(GPIOB, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT); GPIO_Init(GPIOC, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT); GPIO_Init(GPIOD, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT); ADC1->CR1=0x00; CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE); //Only Timer 1, 2 and 4 seem to exist TIM1->CR1=0x00; TIM2->CR1=0x00; TIM4->CR1=0x00; CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE); CLK_PeripheralClockC

Hello everyone, i'm trying to use the vd66gy with the raspbeery Pi x64 connected on cam0 and im following all the steps of the "Linux Start Guide for ST BrightSense" but it still doesnt work. I downloaded the drivers for the camera as well as the libcam st version from this link: https://www.st.com/en/embedded-software/stsw-img503.html?dl=redirect. However i see that even for the vd66gy driver, the en.vd66gy_1.0.3.zip has all the vd56g3 files and the makefile looks like this: ifneq ($(KERNELRELEASE),) include Kbuild else KVERSION ?= `uname -r` KDIR ?= /lib/modules/${KVERSION}/build default: CONFIG_DRIVER_VD56G3=m $(MAKE) -C $(KDIR) M=$$PWD clean: CONFIG_DRIVER_VD56G3=m $(MAKE) -C $(KDIR) M=$$PWD clean endifIs this a mistake? It looks like the vd56g3 driver. You can confirm by downloading the driver from the link. As a result when i complete all the steps and launch rpicam-hello i get this: rpicam-hello [0:30:33.792539716] [3479] INFO Camera camera_manager.cpp:327 l

Hello all, I am trying to write a new password in untraceable mode (tried in all modes) of my ST25TV02KC tag. I have downloaded the x-cube-nfc5 file and using the tagdetect example for STM32L476 board. After running the below code, the newly written password is not getting the accepted. Even the old password is also not working. Am I doing the process in the intended way? Reader : ST25R3911B-DISCO MB1325-C  

 Hi,I'm currently working with the STM32G491 MCU to implement low power functionality. I plan to enter Stop mode when a specific condition is met. I've written a function to handle entering low power mode.However, I'm noticing that the current consumption only drops slightly—from 53 mA to 51 mA—after entering Stop mode.Here is the code I wrote for low power mode.void enter_low_power_mode(void) { HAL_UART_DeInit(&huart1); HAL_SPI_DeInit(&hspi1); HAL_I2C_DeInit(&hi2c3); __HAL_RCC_TIM1_CLK_DISABLE(); __HAL_RCC_USART1_CLK_DISABLE(); __HAL_RCC_SPI1_CLK_DISABLE(); __HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI); __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU); __HAL_RCC_PWR_CLK_ENABLE(); HAL_SuspendTick(); HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); SystemClock_Config(); __HAL_RCC_I2C3_CLK_ENABLE(); __HAL_RCC_LPTIM1_CLK_ENABLE(); __HAL_RCC_LPUART1_CLK_ENABLE(); __HAL_RCC_SPI1_CLK_ENABLE(); HAL_ResumeTick(); MX_USART1_UART_Init(); MX_

I have4 set up a 9 channel DMA adcBelow is the DMA configuration in the IDEThis is the ADC configurationThis is the IRQ routineThis is where I treat the data.  For every loop it gets added to another array after the conversion.Then a simple routine that divides the accumulated value by the amount of conversion and then some tweakingOn A1 I have a potentiometer with a dividing resistor that I take 28V down to 3.3V the CPU voltage. Very basicIt seems that the conversion get scattered on all the channels and the max reading I can get is 170 with 1.3V on A0.This is the aray  volatile: uint16_t AD_RES_BUFFER[11] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; I am not sure what is happening can any one please assist.Thanks

Hello ST Community,I am using the EVSPIN32F0251S1 board — the 3-phase inverter based on the STSPIN32F0251 SoC — to control a BLDC motor. I am working with the ST Motor Pilot v1.2.12 tool and can see many configuration registers in register section.I would like to request a comprehensive datasheet or reference manual that explains these registers in detail — including their purpose, data format, valid ranges, and effects on motor control.This will help me better tune the motor and understand the system behavior.Any official documentation or application notes related to these register settings would be greatly appreciated.Thank you in advance!

Hello, this is a general question for my understanding.when I single stepped* through my SPI code, I encountered some unexpected behavior. But when I run over the code, it worked as expected.*During this time, I had the peripheral SPI view opened.So my question is, when the debugger updates the view, e.g. by showing me the content of the SPI_RXDR register in the peripheral view, will this already have an effect on the SPI HW, like when I read the SPI_RXDR with SW ?Or can the debugger read the registers somehow different ?(A read to SPI_RXDR will have effect to RXFIFO and Rx-Flags)     

Hi,I want to know the exposure time of VL53L5CX per frame.I also want to know that it is possible to configure the exposure time?Best,Jsc.

I wish to connect the P-board, which has a 22-pin connector, to a Raspberry Pi that has a 15-pin camera connector (From the Raspberry Pi 1/2/3/4 series, not the 5). The datasheet for the P-board only gives a vague suggestion. Is there a specific cable that has been known to work?

Select PA1 as TIM2 CH2, those code are copy from ST official example(TIM21), and changed to TIM2.no output from PA1, code as below:void ConfigureTIM2AsPWM_EdgeAligned(void){/* (1) Enable the peripheral clock of Timer x *//* (2) Enable the peripheral clock of GPIOA *//* (3) Select alternate function mode on GPIOA pin 1 *//* (4) Select AF2 on PA1 in AFRH for TIM2_CH2 */RCC->APB1ENR |= RCC_APB1ENR_TIM2EN; /* (1) */RCC->IOPENR |= RCC_IOPENR_GPIOAEN; /* (2) */GPIOA->MODER |= 0X00000008; /* (3) */GPIOA->AFR[0] |= 0X00000020; /* (4) *//* (1) Set prescaler to 15, so APBCLK/16 i.e 1MHz *//* (2) Set ARR = 8, as timer clock is 1MHz the period is 9 us *//* (3) Set CCRx = 4, , the signal will be high during 4 us *//* (4) Select PWM mode 1 on OC2 (OC2M = 110),enable preload register on OC2 (OC2PE = 1) *//* (5) Select active high polarity on OC2 (CC2P = 0, reset value),enable the output on OC2 (CC2E = 1)*//* (6) Enable output (MOE = 1)*//* (7) Enable counter (CEN = 1)select edge aligned m

Hi,1. [Part Number] NUCLEO-L432KC2. [Environment] STM32CubeIDE 1.14.13. [Schematics] NA4. [Details] I am trying to measure a fast pulse with the ADC (~3 us rise time). I would like to trip a comparator when the pulse starts to rise and then start an ADC (paced by a timer) to fill a buffer via DMA. After the buffer is full, I will send the data over UART for analysis.The COMP and ADC are both connected to the same input. The COMP is set to trigger when the voltage exceeds that of an external input set to 0.04 volts. The ADC is connected to a timer that triggers at 2 Mhz.I wait for HAL_COMP_TriggerCallback and then start the ADC with DMA: void HAL_COMP_TriggerCallback(COMP_HandleTypeDef *hcomp) { if (hcomp == &hcomp1) { HAL_ADC_Start_DMA(&hadc1, (uint32_t*)voltage_buf, VOLTAGE_BUF_LEN); HAL_COMP_Stop_IT(&hcomp1); }} 5. [Problem and Expected behavior] I have configured the above but I am seeing that the first ADC reading starts well after the pulse has started. Should I expe

Hello everyone,I am using a NUCLEO-F446ZE board as a USB device. I use EP1(IN/OUT) for bulk transfer and EP2 IN for Interrupt transfer.USB firmware side(STM32F446ZE), I send EP2 data as below.i call  USBD_LL_Transmit(pdev, ep_addr, pbuf, size)  then callsHAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum).everything up to this step seems fine and EP2 IN data is stored in FIFO.However when PC(host side) polls for EP2 IN data,  PC can`t receive the data. I use WinUSB to poll EP2 IN data.WinUsb_ReadPipe(winusbHandle, ENDPOINT_INT, interruptBuffer, sizeof(interruptBuffer), &bytesRead, NULL);//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////000058: Bulk or Interrupt Transfer (UP), 2025-05-07 09:50:43.1859061 +0.2135957. (1. Device: )Status: 0xc0010000Pipe Handle: 0x22737730 (Endpoint Address: 0x82)Get 0x0

Hi, We are currently working on integrating software support for the Teseo-LIV3FL GNSS module (specifically, the PNT-SG3FS part) on our OpenQ 8550 SOM Development Kit (https://www.lantronix.com/products/open-q-8550cs-som-development-kit/). The GNSS module interfaces with the 8550 development kit via UART. We have updated the relevant DTSI files in our platform and verified that UART TX/RX communication is functioning correctly. However, when attempting to read the data from the GNSS module, the output appears to be unstructured or junk data. It also seems that the module is not acquiring a satellite fix. Here's a sample of the output we're observing: # microcom -s 9600 /dev/ttyHS5$PSTMVER,GNSSLIB_8.4.18.25_CP_ARM*07$GPTXT,DEFAULT LIV3FL CONFIGURATION*12$PSTMVER,OS20LIB_4.4.0_ARM*40$PSTMVER,GPSAPP_2.11.0.1_CP_LIV3FL_ARM*48$PSTMVER,BINIMG_4.6.15.1_CP_LIV3FL_ARM*4F$PSTMVER,SWCFG_8306532d*33$PSTMVER,STAGPSLIB_6.0.0_ARM*5A$PSTMVER,STA8090_822bc043*61$GPTXT,(C)2000-2018 ST Mic

Hi John, Could please confirm if the slew rate requirement of VL53L8CX is satisfied in the EVM X-NUCLEO-53L8A1?  We're considering to use TI's TLV751180330PDSQR to power up the VL53L8CX sensor. But the TLV751180330PDSQR supports 11mV/µS approx. Also, there is no graph where we can infer the O/P slew for the LDK130M33RY or LDK130M18R. 

Hello ! I am calibrating a VL53L4CD ToF sensor. Is it suggested to set a large timing budget (e.g. 200 ms) for the offset and crosstalk calibrations' distance measurement process? In the distance measurement examples, the timing budget is set to 10 ms for 'fast mode' and 200 ms for 'high accuracy mode'. If the sensor will ultimately be operating in both 'fast' and 'high accuracy' modes, is it better to perform the initial offset and crosstalk calibrations in 'high accuracy mode'? Thanks!  Brian

..

Hi,i've been posting here a few times to get a VL53L4CX to work. I've had success so far, but the latest iteration of my little PCB is really giving me troubles.When i apply power to my board (via an esp board) it stops working (the esp32 board). It feels like i've created a short, but i can't seem to measure that on the board.I do solder this myself, so there could be a short under the sensor itself (i just use a heat gun from the bottom after tinning the pads). I've done this a few times now and i'm quite sure it's not the case... so there must be an issue with my board layout/design.It would be great if somebody could review this for me?http://cyclops.nettrends.nl/stuff/tofboard.tar.gz

I figured out how to build and integrate the Android kernel with my updated drivers. Unfortunately, my eval kit hangs at the ST splash screen before restarting after flashing my device.  I run the "flash-device" command mentioned in the wiki: How to populate boards for Android - stm32mpu without any errors. I attached a serial UART log from boot. The system hangs and reboots after the following lines: Starting kernel ... I/TC: Secondary CPU 1 initializing I/TC: Secondary CPU 1 switching to normal world boot Any advice? Thanks

The TI motor drivers mct8329a and mct8316 require 100us delay between i2c data bytes. This can't include the acknowledge bit, but requires holding down the clock between transfers for the 100us. it is due to a bug in the TI chips that can't stretch clocks. Not doing this properly (according to TI) causes the chip control to freeze requiring a reset to recover.I'm using an STM32F429/439 MCU and my firmware is utilizing the STM32F4xx HAL, specifically the stm32f4xx_hal_i2c files. I'm using host mode on the ST for the driver chip slave. I have added blocking delays (using a 1us timer) to achieve the 100us delays to HAL_I2C_Master_Transmit, I2C_MasterRequestWrite(), HAL_I2C_Master_Receive() and I2C_MasterRequestRead() functions. I've had to tweak some of the status register setting, particularly the I2C_CR1_ACK flag.I've been successful getting the behavior I need for most of the transactions. The transmits all work well, where I'm having difficulty is with the first two bytes of a five by

When using I2C with DMA on an STM32G4, is there a recommended relative ordering of the I2C event, I2C error, and DMA interrupt preemption priorities?I have not been able to find anything in documentation about this (though I might have missed it). What I have found is the CubeG4 examples (I2C_TwoBoards_ComDMA) where the DMA, I2C event, and I2C error interrupts all have the same preemption priority (0 for all). I've also found another post where ST recommends the following relative preemption priority values: DMA (0) < I2C error (1) < I2C event (2).Currently we have the following relative preemption priority values: DMA (8) < I2C event (10) < I2C error (11). In our case the event and error are reversed compared to the above linked ST advice, though we don't remember why. I'm debugging WWDG events that we've traced to an I2C event interrupt storm, and one hypothesis is that the internal state of the HAL I2C driver is getting corrupted by e.g. DMA interrupt preempting an alrea