STM32 MCUs Products

Hi   I am wanting to use the LPTIM to break out of STOP2. I have a function to set the timer, and go into stop mode. After setting LPTIM1->ARR,  LPTIM_ISR_ARROK in the LPTIM1->ISR  is never set. After X amount of seconds, the STOP2 exits as expected, but the  PWR_SR1_WUF in the PWR->SR1 is never set.  The timer interupt is called when the STOP2 exits. Here is my code, not sure what I am doing wrong, anyone help?:   #define PWR_CR2_LPTIM1WUF_Pos (5U) #define PWR_CR2_LPTIM1WUF (1UL << PWR_CR2_LPTIM1WUF_Pos) //always gets called when STOP2 exits void LPTIM1_IRQHandler(void) { // Just clear the interrupt to prevent re-entry if (LPTIM1->ISR & LPTIM_ISR_ARRM) { LPTIM1->ICR = LPTIM_ICR_ARRMCF; } } void LPTIM1_StartSTOP2Timeout_ms(uint32_t ms) { // Enable LPTIM1 and its clock RCC->APB1ENR1 |= RCC_APB1ENR1_LPT

Hi, I have a custom board in which VREF+ is supposed to be 3.3V. But the actual VREF+ (pin32) is 2.xV, with drifts between power ups. VDDA (pin 33) is 3.3V.What's wrong with the circuit schematic? Can I just remove the resistor (R22) between VREF+ and VDDA? Thanks very much!

When I use sleep mode while debug it sleep mode Works. But when I try runing code without using debug method it dosnot go in Sleep mode. When I chack current.When using debug method stape by stape.

Respected sir/madam,We are using STM32F411CEU6 blackpill board. When we try to put our code into the flash, it says it the memory is protected. Can you suggest possible solution to solve the issue?

Hello!I bought a BlackPill board, and need to upload ("flash"?) a hex-file to it.It's for a simple musical midi controller.I tried using Arduino once, and could copy the code to the Arduino IDE app, connect the RP Pico, and upload the code to the board, done!I reconnect the Pico to my MacBook and the BlackPill is now a USB Midi controller.They also have a file for the BlackPill STMF32411, in either .hex or .bin form.I downloaded them both.I'm on a MacBook running Big Sur.The BlackPill has more ins and outs for switches, pots, etc., so I bought one.Is there a simple way to upload this file to the BlackPill without allot of technical knowledge?I should say without ANY technical knowledge?I figured out the button sequence to put the BlackPill in bootloader mode, but the few things I tried didn't work, and frankly I don't have any idea what I am doing.Just need to upload one of the two files to the Black

Hi, I'm trying to figure out how to program this MPU with the Arduino IDE.I tried to make the serial port appear but without any success.Unfortunately I have lost all reference to the purchase and it seems that RobotDyn no longer exists.I tried the following configurations:BlackPill F103C8BluePill F103C8BluePill F103C6I tried to install the bootloader with STMCubeProgrammer using the following bootloaders:generic_boot20_pc13, generic_boot20_pc13_fastboot, maple_mini_boot20I installed the following USB drivers:install_drivers.batinstall_STM_COM_drivers.batwdi-simple.exeIn all possible permutations, but I was able to program this board.And STLINK isn't even displayed, at most I see a Maple_003 port which I tried to use but without success.Where am I doing wrong ?

Hello Team,I'm using STM32F401CCU6 Black Pill Board. I've used MCP3208 ADC from Microchip for my application. while interfacing with microcontroller, I'm unable to get readings for few test cases. as Vref is 5v and ADC is of 12bit resolution. I've tested for 0v, 2.5v and 5v. getting 4095 as correct readings while applying input to channel 5v but getting garbage/random readings on 0v and 2.5v.I've tested with another microcontroller for the same and works well.Kindly check this and let me know. Hoping to hear from you soon. Thanks and Regards,Prajwal Bhusedesign@avyannatech.com

Hey guys!I'm trying to run the eaxmple found in this link: https://deepbluembedded.com/stm32-serial-port-uart-with-usb-ttl-converter-pc-interfacing/I'm able to read the data from MCU serially, but when I write, the GPIO is not getting toggled. I've configured the MCU as described. I'm using blackpill v3 board. What I suspect is there is an issue with type conversions. But not sure. It would be very helpful if someone can help me with this. Thanks in advance!

Hi,Pretty new to STM32 but reasonably comfortable with ESP32, Pico and 40 years of C++. So old enough to expect it to be me.Cannot get blink to work with blue pill 32k using cube ide on ubuntu 23.04 with   while (1) { /* USER CODE END WHILE */ HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13); HAL_Delay(500); /* USER CODE BEGIN 3 */ }  I do set the PC13 pin to output and set the sys debug thing but nothing else aside from the code.Works fine for the neucleo board but not for this board. Also works fine with arduino so guessing the Programmer working fine. Although for neucleo I am not using the stlink v2.Please remember I am new and could easily be doing something wrong.Not at PC so maybe typos Thanks

Hello, ST experts It seems that SPI_MOSI on STM32F407 does not show a certain level. So it is vulnerable by other sources. Is that a register bit like SPI_MASTER_KEEP_IO_STATE_ENABLE on STM32U595? So that MOSI can keep a certain level. Best RegardsYang

I am using a Bluepill Board but it is not functioning as expectedHow do I verify if the chips on my Bluepill Board are genuine or a fake knock off?

Hello STM32 Community, I'm working on an STM32 Nucleo-H503RB board and trying to communicate with a P3T1755 temperature sensor over I3C. According to the P3T1755 datasheet, I need to perform dynamic addressing using the SETDASA CCC. I followed the official ST I3C guideline (Getting started with I3C - stm32mcu) and adapted the LPS22HH example to my setup. However, I'm encountering an issue. Current Setup & Process: Disable IBI interrupt (DISEC CCC) → Works correctly (Verified on oscilloscope :white_heavy_check_mark:) Reset previous dynamic address (RSTDAA CCC)

Hello, I am dealing with difference between real measured frequency and set on my Nucleo H755ZI-Q.the measured real frequency :APB1 76,8 MHzAPB2 76,8 MHzrecalculateddebugging frequencz SWV Core Clock 153,6 MHz I also try printf debuged frequency:HSE is enabled and ready.System Clock: 480000000 HzAPB1 Timer Clock: 120000000 HzAPB2 Timer Clock: 120000000 HzAPB1 Prescaler: 4APB2 Prescaler: 4 if ((RCC->CR & RCC_CR_HSERDY) != 0) { printf("HSE is enabled and ready.\n"); } else { printf("HSE is not enabled or ready.\n"); } printf("S

Hi All,Is there anyone knows why sample projects do not include a .ioc file ?Are not these project generated with CubeMx ?https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects Regards. 

Hi everyone I want to program Stm32F103C8t6 via USB and STM32Cube programmer version 2.10.0. I am using "STM32 smart V2." I pulled up the Boot0 pin and disconnected and connected the USB cable to the board (the board's power comes from the USB, so it resets when the USB gets disconnected and connected ). Still, the Cube programmer can't find any DFU, and the windows  always come up with the message "USB not recognized."  let me know if you can suggest any solution Best regards 

 Hello ST Experts, I'm using STM32H747 and I try to run adc calibration at the start of the code, like under lines.     HAL_ADCEx_Calibration_Start(&hadc3, ADC_CALIB_OFFSET_LINEARITY, ADC_SINGLE_ENDED);    HAL_ADCEx_Calibration_Start(&hadc3, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED); I'm wondering if there is a need to apply a specific voltage to the ADC input lines before calling the above functions.    

Hi, I designed a board with uC STM32H743 that works with a 480x800 display connected through the LTDC peripheral, I don't quite know how to use the LTDC, I don't have ram for the buffer of the entire display. What I can do is fill the background with color, but on layer1 I can only display one buffer at a time, when I display another one, the previous one disappears. In various videos I see that even small uCs can handle a larger display without a large buffer. My question is, what should the procedure for loading smaller buffers into layer1 look like?

Hello,This might seem like a silly question but when using the pin names generated by cube IDE for the RMII interface does TXDx connect to TXDx on the PHY or RXDx? On the schematic for the NUCLEO board it seems that the microcontroller pin in named the same as the pin which it connects to on the PHY. Is this the case? Thank you. This really worrying me as I would feel pretty *** if I connect TX to TX and it didn't work.

Hello, After purchasing the pre-configured Truphone eSIM B-L462E-CELL1 kit and following the eSIM activation steps, I still haven't seen the eSIM marked as activated on the Truphone IoT dashboard after one day.I've also seen others inquire about this issue and have followed the advice to set 'at%nwoper' to "TRUPHONE" in the response, but the eSIM still cannot be activated.(reference: https://community.st.com/t5/stm32-mcus-embedded-software/b-l462e-cell1-esim-activation-failed/m-p/617775) Log:AUTOM TASK: WAITING_FOR_NETWORK_STATUS_STATE - POLLING_TIMER_EVENT*********** CST_network_status_test_mngt ********ATParser:*** SEND (size=10) ***AT+CEREG?<CR><CR><LF>+CEREG: 2,3<CR><LF>ATCModem:NetworkState (EPS) = REGISTRATION_

I am currently doing project on FpAI vision people counting. But after following all steps i am getting error like this.Error: TCP error status 0x4Error: TCP error status 0x4Error: Fail reading CTRL/STAT register.Force reconnect Polling target STM32H747XIHx.cm7 failed, trying to reexamineError: TCP error status 0x4Error: TCP error status 0x4 Error:Fail reading CTRL/STAT register.Force reconnect Error: [STM32H747XIHx.cm7]Examination failed Examination failed, GDB will be halted. Polling again in 6300ms

HAL_I2C_Mem_Write(&hi2c1,0x80,HDC2080_DI_REG,1,data1,1,100); while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);  if (HAL_SPI_GetState(&hspi2) != HAL_SPI_STATE_READY) {// SPI ???,?????????Error_Handler();}HAL_SPI_Transmit_DMA(&hspi2, new_wave, sizeof(new_wave)); when data1 =0x00, SPI +GPDMA can work; but when data1 ≠ 0x00, such as 0x01 and so on ,GPDMA can be enabled and USEF = 1. When I remove "HAL_I2C_Mem_Write(&hi2c1,0x80,HDC2080_DI_REG,1,data1,1,100);",SPI + GPDMA can work. Why? 

Use SPI with MCU above.  Withspi_transmit(0x55);andvoid spi_transmit(uint8_t tx_data) { SPI1->DR= tx_data; while (!(SPI1->SR & SPI_SR_TXE)); }I have 16 SPI clocks. Init was: hspi1.Init.DataSize = SPI_DATASIZE_8BIT; Data on MOSI showing on the first 8 clocks, MOSI on remaining 8 clocks is zero.While using HAL (same init):pdat= 0x55; HAL_SPI_Transmit(&hspi1, (const uint8_t *)&pdat, 1, 100);I have, as expected, 8 SPI clocks.Any Suggestions? Thanks!

Hello everyone, I'm trying to read four analog signals on my STM32F722RET7 using ADC1 with four consecutive channels and outputting the results over UART.Even though the input voltages remain constant, the ADC readings fluctuate without any change in the input signal. Can you please suggest a solution for this?

I've been working with the Nucleo STM32H533 and came across a documentation issue. EXTICR1 and EXTICR4 are shown as having the same address on pages 18.6.15 and 18.6.18 of the reference manual. Additionally, in the Special Function Register tab in STM32CubeIDE, they are also labeled incorrectly. However, they are correctly labeled in the register map section of the reference manual.This threw me off for a while—I wasn’t seeing any changes in the EXTICR4 register while debugging. When I manually modified the bits in EXTICR4, the changes were mirrored in EXTICR1. It wasn’t until I checked the memory browser that I realized the register was being set correctly when using the register map address and noticed the inconsistencies elsewhere. 

Environment: Hardware: NUCLEO-H7S3L8 Software: Bootloader: Loaded on internal flash Application: Loaded on external flash Hi Support Team, We are currently facing an issue with the RTC module, where it fails to initialize and set up when running the application code from external flash. Below are the details of the issue and the debugging steps we have attempted: We found that the RTC initialization fails due to a timeout error and gets stuck in a loop inside the function RTC_EnterInitMode(RTC_HandleTypeDef *hrtc) in the stm32h7rsxx_hal_rtc.c file. /* Wait till RTC is in INIT state and if timeout is reached, exit */ while ((READ_BIT(RTC->ICSR, RTC_ICSR_INITF) == 0U) && (status != HAL_TIMEOUT)) { if ((HAL_GetTick() - tickstart