STM32 MCUs Products

To enable LwIP in CubeMX (inside CubeIDE) it needs the CPU data cache enabled.  Ok, no problems, but it doesn't explain why and I can't find why this is the case. Is anyone able to offer an explaination?  

I am trying to interface a 7" LCD-TFT screen that uses LVDS for its interface. I was wondering if the LTDC on the STM32F439 or STM32F469 could be used with the LVDS interface? 

Hi ST, Can I request the MISRA compliance report for STM32H747? Or where can we download the relevant document? Thank you.

Hello,I have developed my own board using the STM32H723VG and two equal sensors connected separately via SPI1 and SPI2.I have underclocked the MCU to 300MHz. The SPI clock is 48MHz while the communication frequency for both sensors is 24MHz. As CS I am using a manually toggeled pin. I am using the HAL and the STM32CubeIDE. For setting the initial registers of the sensors Iam using the blocking SPI TransmitReceive function. While reading a known register value from the sensor 1 which is connected via SPI1 I have seen that sometimes the used SPI HAL function does not return the expected value but returns HAL_OK. Instead of the expected Value (71) i get a 0.So far I have discovered in a test code that the issue occures after using a delay longer than 145ms.I dont know why a HAL_Delay or just anything else which blocks an SPI transaction for longer than 145ms should result in an SPI communication error. I doubt that my issue has something to do wi

I need to use the energy collection mode of ST25 to wake up L4. The software used now is En.X-Cub-NFC7. How can I modify the example code to set L4 to low power mode and wake up L4 only through the energy of ST25?

 i have established communication with a BLDC (Brushless DC) controller. Initially, i send a message to the controller using the function void sendParameter(uint8_t parameter). Following this transmission, the BLDC controller is expected to respond with a frame. Although the transmission process appears to be functioning correctly, the receiver is not operating as expected. i have confirmed this issue using a logic analyzer.   UART_HandleTypeDef huart1;uint8_t buffer[10];uint8_t senddata[4] = {0x66, 0x42, 0x00, 0xA8};uint8_t transmitAllowed = 1;-----------------------------------------------*/void SystemClock_Config(void);static void MX_GPIO_Init(void);static void MX_USART1_UART_Init(

Hi there,I received a new out of the box NUCLEO-144 H723ZG board which I can not connect, but getting the "Can not connect to the target!" message (see below)What I've done so far:- checked the Jumper as described in user manual UM2407 section 5 >> all as described- started ST link utility- plug in USB cable To CN1 (checked cable on other USB device, used different USB cables)- Target >> Settings   * SWD    * default frequency of 8000 (kHz I guess)   * Access Port 0   * Hardware Reset   Tryed the same setup in BOOT mode (BOOT1 pin to 3V3) as decribed herehttps://community.st.com/s/question/0D50X0000BL7SnASQV/stlink-problems-with-stm32h745idiscoH723ZG goes into boo

I am trying to set up a multichannel ADC and following YouTube tutorials to create it. However, the STM32 IDE will not allow me to set preemption priority to 1. Similarly, I cannot set the clock prescaler as divided by 2.  I need to make a multichannel with

Hello,I have here two Nucleos with an H743 on it. If it is rev Y, it is the "old" 144pin Nucleo board with the break-off ST-link board on top. For this there is a schematics in appendix A of the user manual. But if it is rev V, it is NUCLEO-H743ZI2 , note the 2 at the end, with no break-off possibility and a different user manual. And this manual has no schematics included. A trouble start as I start my project. While the manual says PC9 = MCO2 is on CN8 pin4 and CN12 pin1, I see a signal only on CN8 pin4. No way to check what's going on without schematics.Please ST folks can you provide this somewhere.Thanks a lotMartin

Hi,I have an external SPI 8 channel ADC which is connected to the STM32,one of timers would generate a 32KHz 50% pwm signal which is connected to the ADC convert pin, the ADC has a busy pin which is connected to the EXTI0 of the MCU.The plan is to use the EXTI0 to trigger 8 16bit SPI reads from the ADC, so after gathering 640 samples I would get an interrupt, to process the incoming data, since Interrupting the CPU 32000 times  per second would not allow any other meaning full job to be done,So I have done like thisPin A0 configured as EXTI0

Hi STM32-Community, I'm using an STM32H743 with ADC3 in circular DMA mode. ADC has a clockfrequency of 48 MHz. I'm using 8 channels within this ADC3 and also configured the DMA with said channels each with a sampling time of 64.5 cyles. I'm using an async prescaler of 6.Calculating the sampling rate for a single ADC Channel I get:48 MHz-----------------                                    =  15,504 Hz ~ 15.5 kHz(8 Channels* 6 (Prescaler) * 64.5)I've put a variable within my DMA routine (which does nothing else) and everytime the DMA toggles this variable, I send out the time needed between each DMA interrupt. I consistenly receive 1169 ms with a DMA Size of 65528.65528---------------------------------   ~ 7.005 kHz.(1.169)*8 (ADC-Channels)Where is my error?Here are the ADC Config:

Hi, I am using STM32L072CZT6 for my project. The device operates in two stages: It wakes up at scheduled intervals, save the number of interrupts received to flash , and returns to standby mode. During standby, interrupts wake the device, the count is stored in the RTC backup register, and this cycle repeats until the next wake-up time. The problem arises after 10 or 20 wake-up cycles (in consistent) , leading to the undesired erase of flash memory . This issue occurs only when external interrupts are continuously received. The problem does not occur when the device is idleI am inquiring

Hello.I'm trying to use STM32 U5A5' SRAM (SRAM1,2,3,5) and I'm encountering some very weird behavior.When I use the entire aforementioned sram blocks, my mcu hard faults.uint8_t __attribute__((section(".TEST_Section"))) data[1024*1024*2];int main(void){/* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* Configure The Vector Table address */ SCB->VTOR = 0x08000000;

Heyho,about VCAP / LDO connection in STM32H7 series without SMPS, for example in STM32H733ZGT6 (LQFP-144), when using the internal LDO for core supply.As far as I understand, the VCAP pins are for the connecting buffering capacitors to the internal LDO.I have checked the Nucleo (H723) and Discovery (H735) schematics, and for each pin there's a 2u2 cap, but all pins are connected.Questions:1) Is it a must to connect all the VCAP pins together on the PCB?If so, please give me some valid explanation. Electrically this is one net within the STM32, so I don't see why these should be connected externally, as long as each pin is closely connected to its dedicated external capacitor.In a LQFP-144 package these pins are quite far apart, and I'd like to NOT connect these pins - the layout will be ugly enough.2) Is there an upper limit on the capacitor size?Assuming I

i have an issue with my timer interrupt that every 500 us happends and external interrupts (12EXTI) .when the timer interrupt happend , the external interrupts never execute.i dont know why this is happening.i mean it supposed to pending for other interrupts but it looks like this is not happening

Hi,Im using STM32L031F6P6 mcu for one of my project. Im also using IIS2MDCTR & LSM6DSV16BTR sensor.I need to find heading regarding that i have few doubts.1.Will STM32L031F6 mcu support mems1 package?if no could you suggest a mcu which support the same?2.If mems1 package is not supported by this mcu , is there any libraries available to find heading ? 

USING MCU - STM32H743XIH6As per datasheet "STM32H743XIH6_Datasheet" page 139 it is mentioned that GPIO can sink/source 8 or 20 mA.When MCU will be going to source 8 mA and when it will source 20 mA?Is there any current control configuration inside MCU?And what amount of current Particular I/O will source, if configured as output push pull with no pullup/pulldown and driving low as follows.

hi i am saishiva i am working on the STM board from 10 days but i am not getting the clarity about the how to activate the RS485 using the modbus protocol can you pleaae help on that  

Dear Sir,I have interfaced SDHC card 32GB of Sandisk with STM32L452RET6 microcontroller SDMMC1 peripheral in mode - SD 4 bit wide bus. In my device SD card as a Datalogger.Issue - When my device is working mean data is logging (Data writing in SD card). In this period i have cut SD CMD line and again connected.In this period - function this SDMMC_GetCmdResp1 return a error.In working condition - Which routine we have to call to fix this issue???Please suggest solution for this issue.....

I saw on NUCLEO-U5A5 schematics - there is a level shifter for signal T_VCP_TX:a bit obvious: if MCU jumper is set to run on 1V8 VDD - an external UART receiver (e.g. CP2102N) would not get anymore correct UART_TX signals (yes, it does not anymore with 1V8 logic on TX).Wouldn't it be enough to use an Open Drain signal on MCU (for UART_TX) and an external pull-up to 3V3?The UART_RX should be OK, even MCU on 1V8 MCU VDD, but assuming RX is 5V tolerant.Here what I mean - and it works!Just configure the UART_TX as GPIO_MODE_AF_OD and it should work also without a need for a level shifter (with external pull-

Hello,which interfaces does a virgin STM32C0 in SO8N offer on the first boot for programming? AN2606 says USART1 and I2C1. In other cases, AN2606 adds a note when SWD does not work, but no such note is there for STM32C0. So, I assume SWD is supported too. However, while SWD is on PA13 and PA14 and I2C1 is on PB6 and PB7, PA14 and PB6 is muxed to the same pin in the SO8N package. So, this seems like a conflict. Did I understand something wrong?If SWD is not supported in the bootloader, is there a way to prevent the bootloader (for example, with the BOOT0 pin)? I want to put SWD on a pin header for debugging anyway and it would be annoying to need extra pins just for the initial programming.

I'm using an STM32H745 and have developed the Boot code, which works as expected when built as part of an application.  However, having converted the Boot code to a static library and linked it into the same application the Boot startup section .isr_vector is not detected and hence not located at the appropriate location defined by the Application linker script.Is there something I need to add, either to the Boot library or the Application so that the library section get located at the correct address?Other than making the Boot source code a library, rather than part of the Application nothing else has changed.

Hello,I'm writing a Flash HAL driver in order to understand better how this CHIP work.My functions at the moment work correctly but for some page I have an HardFault(During erase).For example I can't erase/write the page 0 and others pages.Please could you explain me why?Thanks!

Hi Everyone,I am currently using STM32F103 for making a usb hid which acts as both, a keyboard and a gamepad.Please take a look at the descriptor and code below.Both of these work properly when used individually but when I combine them both and add report ID no input is detected. In my main function I detect the key press and then assign the data in buttons and keys.     0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)    0x09, 0x05,                    // USAGE (Game Pad)    0xa1, 0x01,           &nb

we are using EXTI1 interrupt in our project based on stm32f446. But the Interrupt handler is not firing.We looked into the interrupt enable registers, Mask registers, etc and all seems fine and a timer interrupt also in the project, which is triggering fine. Please help to rectify this issue.Clock configuration code generated: is the clock configuration settings correct??void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Configure the main internal regulator output voltage*/__HAL_RCC_PWR_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;RCC_OscInitStruct.HSIState = RCC_HSI