STM32 MCUs Products

I am using STM32L562, we have replaced MX25LM51245G with, IS25LP128F external flash.We have integrated its driver and it is working fine. But we want to flash binary using STM32_Programmer_CLI.exe and or STM32Cube programer.For that, I have tried to develop it's loader using the below repositoryhttps://github.com/STMicroelectronics/stm32-external-loader/tree/mainI have done the following changes in the "MX25LM51245G_STM32L562E-DK" projectRemoved related Flies and added IS25LP128F filesI am able to compile it sucessfully.Changed Dev_Inf.c file as belowstruct StorageInfo const StorageInfo = {#endif  "ISI25LP_STM32L562E-DK", // Device Name + EVAL Borad name  NOR_FLASH,        &

We are using interrupt of timer function.Currently, Period and Prescaler are set in the initial settings (MX_TIM6_Init), but what should I do if I want to dynamically change Period and Prescaler? [IDE]STM32CubeIDE 1.14.0[board]​ STM32F412 Discovery kit

I am using an F303RE and UART communications for a project.I'm using all 5 uarts, all with the HAL-library interrupt based transmit and receive.The main communication protocol is MAVLINK, with one of the UARTs being SBUS.My issue:After a random amount of time, a UART channel stops receiving messages.It is also not always the same channel to stop, and it might be multiple channels to do so (not at the same time).Note:I'm dealing with this issue for 3 weeks now, without any progress.I know the 'correct' way would be to write a new HAL, but I don't have resources or knowledge to do so at the moment.I am using HAL_UART_RxCpltCallback, this way:(There's HAL_UART_Receive_IT at the end of each reading function)(I know the code isn't pretty, a switch-case would be a better fit for readability)void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { USART_TypeDef *uart =

Hello. I am confused about the amount of flash on an STM32F105VBT6. From the overview for the STM32F105/107 devices, I gather that this MCU should have 128 Kbytes of flash. And in STM32CubeProgrammer, in the lower right, it says that the target has 128 Kbytes of flash as well. However, I was able to program 139 Kbytes of flash, and it seems like I can successfully write 0x00000000 to the 4 bytes at 0x0803FFFC to 0x0803FFFF. So, the MCU seems to have 256 Kbytes, which is what an STM32F105VC should have. Does anyone know what's going on?

I'm trying to configure NUCLEO demo board at 480Mhz but I'm not able in any way, the following clock configuration seams to be correct, no conflictsBut the code will permanently hang on on the following configuration lineIf I comment the line while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY))all seams to work correctly, why?Chip revision seams to

Good morning,I am working with a board mounting a STM32L0x3 microcontroller. My SystemCoreClock is 32 MHz and TIM12 is clocked at 4 MHz. TIM12 has been configured in order to work in Capture Mode on Channel 1 (falling edge).The ISR does what is listed belowvoid TIM21_IRQHandler(void){/* USER CODE BEGIN TIM21_IRQn 0 */ /* USER CODE END TIM21_IRQn 0 */ GPIOB->BSRR = GPIO_PIN_11 ; /* USER CODE BEGIN TIM21_IRQn 1 */ /* USER CODE END TIM21_IRQn 1 */} To my surprise, using an oscilloscope, I noted that time elapsed since the falling edge of the signal the other pin is set is ab

Dear community members,We invite you to provide your suggestions for knowledge base articles in this thread. We strive to create articles that can assist or inspire you in the best possible way. Anything goes, the only condition is that it is related to STM32 MCUs.Simply create a comment in this thread or send me a private message if you are more comfortable with that. If you are interested in suggestions that other members have made, please use the “kudos” button. This helps us identify the most popular requests. The following guidelines can help you think of suggestions that provide value to you or others: Implementing a new hardware or software functionality in your design/project Best practice guidelines for specific products in various scenarios to improve efficiency Explanations/guides on frequently asked questi

I am experimenting with PWM DMA on STM32F407VET6. The code creates pulses of increasing width.If I enable the output compare preload, the number of pulses is 2 instead of 6.The first pulse at startup is the default setting from the configuration in MX and not the first DMA value. This makes sense as preload of output compare means to load when timer = 0 (if I am not mistaken).To make sure PWM values are not one off, I disabled the preload of the output compare register. In that case I get only 2 pulses and pulse generation stops? Why do I get only 2 pulses in that case?void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim) { HAL_TIM_PWM_Stop_DMA(&htim2, TIM_CHANNEL_1); printf("HAL_TIM_PWM_PulseFinishedCallback: Transfer completed\n"); }     /........................../ Main loop extract:   for (int i=0; i<6;i++) pwmData[i] = 1+5*i; /* USER CODE END 2 */   /* Infinite loop */ /* USER CODE BEGIN WHILE

Hello, I am using an STM32L462 microcontroller with a crystal from Wurth: 830 016 178This crystal has a load capacitance of 6 pFI calculated the two load capacitors CL1 and CL2 to be 4.3 pFNow, everything is working OK, and the RTC is running fine...But as soon as I measure the signal with an oscilloscope ( 10 M ohm probe 12 pF) the signal diminishes to zero)Now, I understand that I add an additional 12 pF to the loop, but I am afraid that my solution is not stable.The drive level in the firmware is set to low.And if I turn it to high, it makes no change.The traces to the micro are 4mm and the other 5 mm long. In the reference manual of the STM32L462 they use also a chrystal with a load capacitance of 6pF ( with stopmode specifications they tell), but they have 6.8 pF capacitors can anyone advise

I have a B-L475E-IOT01A2 board. I'm trying to use the onboard microphones to record audio, using the DFSDM peripheral, and then send the data over UART to my PC to play it back. The thing is, the data I get is basically just static.Here is how I configured the DFSDM peripheral in CubeMX, based on the "DFSDM_AudioRecord" example for the eval boardsSource for output clock is audio clock. SAI1 is clocked at 13.714286 MHz, the divider is set at 5 to get 2.74 MHz.Channel 1 and 2:SPI with falling (resp. rising) edge, internal SPI clockOffset = 0, right bit shift = 0x02Analog watchdog (I think is unused): FastSinc, oversampling = 10Filter 0 and 1:Regular channel selection 1 (resp. 2)Continuous mode, software trigger, fast mode and DMA mode enabledNo injected channelsSinc 3 filterFilter oversampling : 64 to get 42.85 kHz. Integrator oversampling: 1 (bypass).

For a project, I need to find a stm32 that has a minimum of 5 timers that can read encoders, and it has to have a CAN-bus peripheral.Is there a way to do this in the part selectors? I can select the minimum number of 16bit timers, but not all 16bit counters seem to support encoder input. Any way to do this without manually reading all the datasheets?I did try to automate this using the XML files in the data folder of stm32cube, but I did not really find a way to detect if a 16bit counter support encoder input.

We need to make a master PWM that vary duty cycle from 1 to 35% and have a phase shift with two other pwm (this two other pwm are in phase and duty cycle 50%, but one starts with one and other starts wiht zero.). The phase shift should vary from 1 to 360 degrees. All the pwm have the same frequency and should be possible change the frequency for all. I tryed output compare between 3 pwm, but only works at 50% duty cycle.

Hello, I have some trouble with FDCAN.Please let me know what is wrong with my settings. 1. Current problem: My STM32H7 transmit only error. (Logic Analyzer) (PCAN View)Same error signal repeat endless and if I connect PCAN, many other error and stuff error occ

Hi all,I want to drive Humidity and Temperature Sensor SHT4x(address is 0x44).I finished the driver code in STM32F103C8 with HAL lib, but when I used the same driver code in STM32F429IG with HAL lib, the HAL_I2C_Master_Transmit() always returned HAL_ERROR. After debugging, the error comes from the following code:This topic said the reason is the I2C master did NOT receive the ACK by slave.But I catch the signal by an oscilloscope, and it seems the

Hi, Regard I Problemed with stm32h747xi mcu. #Setting   - Power mode control is direct smps supply mode  - clock 480MHz  - VScale0 Setting  i saw stm32h7 user manual direct smps supply mode doesn't setting with 480MHzSo now I Know.But I don't know why it doesn't boot well at low temperatures. It seemed to boot well for 4 years at room temperature.When I tried to connect ST-link V2/V3, I checked that it didn't connect either. 

I developed with the stm32f756 chip and then switched to the stm32h743 chip.Then, the functions "LL_SPI_TX_FIFO_FULL", "LL_SPI_IsActiveFlag_BSY", "LL_SPI_IsActiveFlag_TXE", and "LL_SPI_IsActiveFlag_RXNE" that were in "stm32f7xx_ll_spi.h" cannot be found in "stm32h7xx_ll_spi.h". What is the reason and which function should I use to use those functions in stm32h?Please share your knowledge. Thank you.

Hi folks,I use CubeMx to generate UART∕DMA code for STM32L4xx MCU.CubeMx uses currently latest STM32Cube_FW_L4_V1.18.0 package, but HAL_UARTEx_GetRxEventType() is not included in it, neither HAL_UART_RXEVENT_* events.I found it is included in the latest STM32L4 git. Could I somehow use latest STM32L4 git to generate a code by CubeMx with required fix automatically or would it always require manual work to replace HAL_Driver files? Cheers

Hi folks,I'm using HAL_UARTEx_ReceiveToIdle_DMA() on STM32L4. If I use minicom and type a few characters, HAL obviously detects an idle state after each single character I typed.I'd like to configure a idle timeout value used in HAL_UARTEx_ReceiveToIdle_DMA(), so it would suite my use case.Could someone point me to the right place such a fix? Cheers  

Users report here documentation bugs, and Moderators take effort to seek clarification and submit internal tickets. However, these then appear to be ignored.So what's the point.JW

Hello.I encountered strange CubeIDE behavior on a customer board with an STM32G0B1CEU.I've found similar glitches on this forum, but they mostly stemmed from fake HW.I use all original STM from MOUSER.If I enable PWM on TIM4 in MXcube, without NVIC, I generate the code, then using CubeIDE and stlink-v3e I upload the code to the MCU without problems, it works without problems, the oscilloscope shows what it has.But as soon as I activate anything with NVIC (TIM PWM Interrupt, DMA interrupt, ...), I generate the code in CubeIDE, then when uploading the code to the MCU it terminates with an MI error message, see attachment.Where is the problem?Please help.

Hi all,I have a STM32F746 disco board and I'm trying to understand what the visual configurator (VC) does and doesn't do. I created an blank demo project for the board and I answer yes to the "initialize the board to default..." (or something like that).There is only one function created by the VC: MX_GPIO_Init(). I can see all the code inside it that initializes various pins. The I2C3 pins (SDA and SCL) are there too. The VC does *not* have the I2C3 enabled.Then, I enabled the I2C3 in the VC and saved. Now the code for the pins for the I2C3 is no longer inside MX_GPIO_Init(). In fact, is nowhere to be found ... by me... but the I2C3 works fine.Where is the code to initialize the pins for the I2C3 when I enable I2C3 in VC?BTW I'm calling the VC the window that opens up in STM32CubeIDE when you click on the ".ioc" file. Thanks.

I have built a sine wave to square wave circuit and now want to measure its frequency with the STM. I can see on the oscilloscope that the circuit works, however I can detect neither a rising nor a falling edge with the chip. It is not a problem with the code as I can detect both when they are generated by the chip with PWM or externally with a generator (which is old and its square wave really isn't that square) but also they are much slower.The frequency of the wave is 1.24MHz, measured with the oscilloscope. I don't think that this is too fast, the timer runs at 96Mhz, but maybe using interrupts at this speed is too much?The minimum voltage of the wave is 0.6V. I am suspecting that might be too high to be considered a logical 0 but I can't find documentation.I would appreciate any input and also if you could point me to documentation that would be nice!

Hi,MCU- STM32H7I get a busfault exception when I read bank2 flash memory. I can read bank1 with no issues. From the flash register SR2, it shows as ECC double bit error. This is new pcb and I can flash the hexfile to bank1 successfully. Even a Jlink memory read showed read error (below SS):

Hello,readingHello,Pristine STM32L431 PA6 turned to hard output Pristine STM32L431 PA6 turned to hard outpuI wonder why there are no fuses to turn selected bootloader devices of? Cheers

Hello,I am trying to use UART with DMA with IDLE line for unkown length data reception and I am getting the following error:request for member 'NDTR' in something not a structure or union main.cI coded a couple of years ago a HAL_UART_RxCpltCallback() function that needs NDTR to calculate the buffer position.rxBufPos = UART_BUFFER_SIZE - (uint16_t) huart->hdmarx->Instance->NDTR;It works works on STM32F4 series microcontrollers but it does not work on STM32H7 series microcontrollers.I have compared F4 and H7 DMA_HandleTypeDef struct and I have found that F4 *Instance type is DMA_Stream_TypeDef and H7 *Instance type is void.