STM32 MCUs Products

We are using the STM32U5 MCU and its internal RTC in our project.We are facing an issue where the RTC time sometimes goes beyond 24 hours — for example, we observed a timestamp showing 37 hours. The RTC is configured in 24-hour format, and we have initialized the RTC and its time format correctly as per the reference manual and HAL documentation.Also, After running for 23:59:59 seconds, the time changes to 24:00:00 instead of 00:00:00, and the week day has not been incremented. The main challenge is that this does not happen consistently. We see such out-of-range values only randomly, which makes it difficult to identify the root cause. Has anyone faced a similar issue with the STM32U5 RTC? Could you please suggest possible causes or solutions, or any checks we should perform to debug this behavior?

As shown in the figure, when using one QSPI, the other becomes unselectable.

Good morning,I would like to measure the supply voltage on an STM32H573RI. To do this, I measure VREFINT and then want to calculate the supply voltage.My approach (simplified):sConfig.Channel = ADC_CHANNEL_VREFINT; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME_640CYCLES_5; sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.Offset = 0; HAL_ADC_ConfigChannel(&hadc1, &sConfig); while (!__HAL_ADC_GET_FLAG(&hadc1, ADC_FLAG_EOC)); return HAL_ADC_GetValue(&hadc1); Using the ADC value of VREFINT, I calculate the supply voltage as follows:static uint16_t Calc_VREF(uint16_t adc_value) { uint16_t vrefint_cal = (uint16_t) (*(uint16_t *) (0x08FFF810)); uint16_t vrefint_voltage = 3300; return (uint16_t)(vrefint_voltage * vrefint_cal / adc_value); } My ADC delivers a value of 1.562 digits for VREFINT, while the calibration value is 1.503 digits. According to my calculations, the reference voltage is therefor

I am looking to stream audio over an ethernet connection to a cellular hot spot.  This will be low latency.  Can someone tell me what STM32 firmware library I should use and if this is an appropriate hardware for that task? Thanks

Hello everyone, I would like to ask if it is possible (and if so, how) to make both m4 and m7 get an interrupt made by the user button in in the nucleo board, since the only Pin Context Assignment options on CubeMX is either m4 or m7. Do I have to do it "manually" by writing the code to register the interrupt on the other mcu? Thanks in advance!

Hello,I am trying to figure out how to configure internal voltage monitoring use the internal tamper detection to clear the RTC when an undervoltage condition occurs. My understanding is that you have to enable the backup regulator and enable monitoring like this.SET_BIT (PWR->CR1, PWR_CR1_DBP); HAL_PWREx_EnableBkUpReg(); HAL_PWREx_EnableMonitoring();But how do I set up the tamper detection. There appears to be an inconsistency between the RM and the SFR view of the RTC registers in CubeIDE. The register at offset 0x40 in the RM is called RTC_TAFCR (pg. 1980) while in CubeIDE it is called RTC_TAMPCR and they have differnt bit definitions. Which of these is correct (thye can't both be)? I believe the internal detection is included in Tamper 3, but how do I configure that.Without working tamper detection the data is preserved in the RTC at least down to 0.4V but it stops getting updated at a much higher voltage, resulting in losing time when the device is powered on again, but no way

  Hi,i am working on STM32cubeIDE for STM32G071RB nucleo-64 dev board with windows 11.i have a ST-LINK/V2-1 programming and debugging tool is integrated into the Nucleo as shown below image.To power the board, I connect the STM32 Nucleo-64 board to my laptop with a USB Type-A to Micro-B cable through the USB connector (CN2). As a result, the PWR green LED (LD3) lights up and the COM LED (LD1) blinks.I checked the jumper position on the board, STLK (CN4) on [1-2], [3-4], PWR (JP2) on [1-2], IDD (JP3) ON.I installed stsw-link0009 USB driver for ST-Link/V2-1 to make this connection successful.But, still No ST-Link is visible in Device manager, image is attached below. kindly support me to fix this issue and looking forward for your response.ThanksBest RegardsSachin chhaleria

Hi all.I'm working on a project where my MCU (STM32H755) communicate with a device via UART at 921600 Bauds.Here some details about the environment:The device sends constantly, each second, a log at 921600 Bauds. The MCU sends at same speed some commands to the device, the device will answer after that the command is executed and continue to sends out log. There isn't any synchronization mechanism for communication (no clock signal or CTS/RTS is used), plus, there isn't any difference or special character that will allow me to differentiate between command answer and log, so I must take everything I receive in a window of time and parse it at upper level (not relevant for this question), and, finally, to manage the communication I tried with FIFO enabled and disabled (but result seems to not change)What I do to manage the communication is the following:1a: Flush Read data register (but is this sufficient in case of FIFO enabled?)2a: Enable DMA via HAL_UART_RECEIVE_DMA API3a: Enabl

Hi all,I am using STM32G030F6P6 and trying to read ADC channel 11 and channel 16 using DMA.ADC works correctly in polling and interrupt mode.When I enable DMA, the ADC values in the buffer remain 0 all the time.DMA does not trigger at EOC, and DMA transfer never happens.I have been trying for 1 week, and I cannot understand what is wrong.What I have done:Configured ADC correctly (calibration, sequence, sampling time, etc.)Configured DMA correctly (channel, source/destination, size, circular mode)Enabled ADC DMA request (DMAEN)Enabled DMAMUX (for STM32G0 series)But still no data is transferred and buffer remains 0. #include "stm32g030xx.h" #include "gpio.h" volatile uint32_t adc_value[2] = {0},adc_buff = 0, adc_index = 0; void delay_ms(uint32_t ms) { SysTick->LOAD = 64000 - 1; // 64MHz ? 1ms SysTick->VAL = 0; SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk; for(uint32_t i = 0; i < ms; i++) { while(!(SysTick->CTRL & SysTick_CTRL_COUN

Im trying to drive 3.5 inch TFT LCD with STM32H743 using FMC. My setup is : ChipSelect: NE1 Memory Type: LCD Interface LCD Register Select: A18 Data: 8 Bits My timing settings are (FMC Clock: 10Mhz):  Address setup time in FMC clock: 3 Data setup time in FMC clock: 2 Bus Turn around time in FMC clock: 2 Here are the parts of code: #define FMC_BASE ((uint32_t)0x60000000) #define LCD_CMD (*((volatile uint32_t *)(FMC_BASE))) #define LCD_DATA (*((volatile uint32_t *)(FMC_BASE | (1 << 18)))) When I try to write a data, as shown in the attachment, my logic analyzer shows me multiple WR event occured and shows some weird signals on data line (D0-D3). I do not understand where I did wrong...

Attempting to blink an LED using output compare function of a timer, but I've not been able to get signal or toggling to happen on the pin.I'm using TIM5 channel 3, because I'm planning on using SPI1 eventually (I need to use a clock source separate from SPI1, which is on APB2) and the TIM5 associated alternate function GPIO on PA2 is in a convenient location.Meter on the pin indicates a floating pin signal (not going high or low), and LED visually indicates same (no dim light or other visual indication of rapid toggling).The pin itself is fine as normal GPIO: setting same pin as GPIO (not alternate function for TIM5), I'm able to blink "manually" via software. It seems to just be using that pin as TIM5 that causes problems.Here's the CubeMX setup:My understanding from the datasheet is that TIM5 is on APB1:APB1 timer clocks set to 10.5MHz:...so TIM_CLK/CKD/((PSC + 1)*(ARR + 1))= 10500000 / 4 / ((43749 + 1) * (59 + 1))= 1 Hz (should be blinking once per second)

Hi!I want my ESP32F411CE Blackpill to operate as an SPI slave device. The Master is not my creation, it is an already existing hardware, and my task is to emulate some Slave.Well, almost SPI. Here is what happening: Master sets CS line high, and reads 3 byte from the Slave on MISO line. Then it sets CS line low, and sends one byte on MOSI line. CLK frequency is 1MHz, SPI Mode2. I know it is not a proper SPI communication, so there is a transistor added that inverts the CS line. So the MCU doesn't see this in the image above, but the CS line inverted. It is a win-win, because it make the second short clock signal skipped, and that is exactly my intention.I don't care what Master sends, I only want to send that 3 bytes. This is all I want to do! For the first step I created a code, that sends the same 3 bytes, so I can see whan is happening on the oscilloscope / logic analyzer. These three bytes are: volatile uint8_t buttonsOutSPI[3] = { 0xAA, 0xAA, 0xAA };ORvolatile uint8

I created standard project in CubeIDE for Nucleo 411RE ( with default settings)I found some code (which interfaces 4x4 keypad) and try to repeat it with HALI setup pins PC0,PC1,PC2,PC3 with Input mode and Pull-up.PC4,PC5,PC6,PC7 as Output and GPIO output level - High all this based on my understanding code I try to repeat ( below )Did I do correct repeating with HAL ? ( As I understand CubeIDE will generate GPIOs the same way as function ?void keypad_init(void) { /*Enable clock access to GPIOC*/ RCC->AHB1ENR|=RCC_AHB1ENR_GPIOCEN; /*Set PC0 to PC3 as input*/ GPIOC->MODER &= ~(GPIO_MODER_MODE0|GPIO_MODER_MODE1|GPIO_MODER_MODE2|GPIO_MODER_MODE3); /* Activate internal pullup resistor for PC0 to PC3*/ GPIOC->PUPDR|=GPIO_PUPDR_PUPD0_0|GPIO_PUPDR_PUPD1_0|GPIO_PUPDR_PUPD2_0|GPIO_PUPDR_PUPD3_0; /*Set PC4 to PC7 as output*/ GPIOC->MODER |= GPIO_MODER_MODE4_0|GPIO_MODER_MODE5_0|GPIO_MODER_MODE6_0|GPIO_MODER_MODE7_0; GPIOC->MODER &=~( GPIO_MODER_MODE4_1|GP

Hello everybody, I am currently trying to trigger a DMA request with TIM12. I have configured the timer in PWM Input Mode on CH1. While for every other timer there is available a DMA request, there is nothing for TIM12 except the one bellow(in RF0399): Is there any trick to come around from it? I found some older discussion but i didn't have any luck:How to trigger SPI DMA transfer using TIM12 TRGO on STM32H7  Timer events as DMA triggers - Improving the current situation in CubeMX/HAL  Thanks in advance for your time!

I made a mistake and set PC2 as an ADC input and PC3 as an GPIO_EXT. The IDE does not warn you when setting the pin to GPIO_EXT, it only shows the warning in the ADC, so I missed it since the ADC was already set.The question is, is there anyway to make this work. The issue I am seeing is the ADC is reading incorrectly. The GPIO_EXT works fine. Thanks.

Question moved from this post. If I have two devices on the same PCB. say an F7 and an MP157, can the CAN_TX of one be connected to the CAN_RX or the other without a CAN transceiver? Similar to UARTs on the same PCB. Maybe series resistors would be required, or pull ups?

 Hello, I have a question about STM32H7S3A8I6 MCU.https://www.st.com/resource/en/application_note/an5935-getting-started-with-stm32h7rx7sx-mcus-hardware-development-stmicroelectronics.pdfLooking at Table 2 of the description in the PDF above, for graphics, STM32H7S3xx specifies GPU2D as N and GFXMMU as Y.https://www.st.com/resource/en/datasheet/stm32h7s3a8.pdfLooking at Table 21 in the following PDF, there are UFBGA 169 SMPS GFx and UFBGA 169SMPS GP. Can I look at the pin number with GFx? and Is the library in the photo for the STM32H7S3A8I6 MCU?

I'm trying to migrate a project from HAL back to SPL as it's less of a haul than porting our code I have to integrate to HAL. The HAL program compiled but at some point during my porting process I'm now getting link errors ONLY for _fstat and _isatty, not any of the other functions defined in the assert.cThe assert.c is the same between a working SPL based project we have and the new one I'm creating, so nothing has changed there. If I implement _fstat in my main.c it still complains that it can't link.Linker Error:c:/program files (x86)/gnu arm embedded toolchain/10 2020-q4-major/bin/../lib/gcc/arm-none-eabi/10.2.1/../../../../arm-none-eabi/bin/ld.exe: c:/program files (x86)/gnu arm embedded toolchain/10 2020-q4-major/bin/../lib/gcc/arm-none-eabi/10.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m+dp/hard\libg_nano.a(lib_a-fstatr.o): in function `_fstat_r':fstatr.c:(.text._fstat_r+0xe): undefined reference to `_fstat'I've also tried changing and linking against the soft-fp version of the

Hello, What can i take for a MCU which has function with Low Speed USB 1.1 ? I must make a USB HID Interface as Gamecontroller. It is essential to prevent the PC from getting stuck on the USB port, and this is only possible with USB 1.1.   greets Stefan  

Hi, I have an application with 4 legs PFC and 2 legs inverter controlled by the STM32G484VET3. Can I use one input to disable both when a fault happens independently from the software?   Thank you.

Hi,is there a 64Kb drop-in replacement for the STM32C031G6U6 (which is only 32kb)?We need to find a part where - ideally - we just use the same code without any mods, this is the most important part.And is there perhaps a tool that helps with that? Or at least allows us to make an accurate comparison check between two parts?We just use GPIOs and 1 x RS232 and 1 x I2C in their default pin locations.Thank you

Hello, I have tried a number of I2C slave tutorials found on YouTube with no success, but none are specifically for the STM32G03 series. Also I am getting a very strange phenomenon. In CubeMX for I2C2 I set the first slave address to 0x012. On my PC I am using python with a USB adapter to scan() the bus. I have an EEprom on the same bus an the scan address is correct but for the MCU it returns 0x13?Has anyone encountered this address shift?Is there ANY WORKING examples for this MCU series? This is my first post on this community.

Hi allI'm pretty sure this was already a topic, but i haven't found a solution yet. Since i'm a beginner i definitely need some help here.I'm sending UDP data with LWIP and FreeRTOS. It works, but after some (random) time the code gets stuck at    configASSERT( pxQueue->uxItemSize == 0 ); I tried some settings but nothing helps. It is stopping even if I do not send data . Any ideas?  Cheers

Hi,how do I start the USB DFU Bootloader with a STM32C071 Nucleo? I tried it while putting Boot0 to high and pressing reset or do a power cycle but the STM32 DFU does not show up in the device manager. I connected USB to the NUCLEO extra USB port of the C071. I tried with another board (F2 MCU) where it worked well to prove that the drivers are installed. BRMatthias 

Hi I have a question that blocked me for several days, Hopefully someone can help, thanks a lot.1:MCU:STM32G0B0CET6,Develop tool:STM32CubeIDE2:I wanna have a test for OTA ,so i create a bootloader project and app project3:Flash segmentation:1)Bootloader(32KB),0x08000000~0x08007FFF    APP(240K):0x08008000~0x08047FFF    APP BAK(236K):0x08048000~0x08079FFF   INFO(8K):0x0807A000~x0807FFFF4:In Bootloader ,try to jump to APP(0x08008000):5:Attached the source code (bootloader and app) and hex file(in debug directory)6:Modifed "ld" file in bootloader project and app project, and I confirm  the stack address in 0x08008000 and reset_handler in 0x08008004 is correct.And have set vector in main entry(first line in main()):SCB->VTOR = FLASH_BASE | 0x8000;7:If i use stm32CubeProgrammmer and STM32CubeIDE to start ,app will be run ,But app can not run via bootloader software jump. bootloader jump slide:void RunUserCode( void ) { uint32_t* ucaddr; // i