STM32 MCUs Products

I’m working on a custom board with an STM32F446REt6 and a USB Type-C 2.0 connector (GCT SB4105-GF-A). I haven’t implemented any external pull-up on the D+ and D- lines, but on the CC1 and CC2 pins I have 5.1k pulldown resistors. I managed to load the firmware via DFU and Windows recognizes the device without any issues — the firmware upload works perfectly. However, when I try to use the Virtual COM (CDC), Windows returns an error saying “Unknown USB device (Device descriptor request failed).” I’ve already installed the ST USB drivers but nothing changed. In my .ioc project I enabled USB_OTG_FS, then in middleware I enabled USB_Device and selected Virtual COM. I tried leaving the device descriptor at default and also modifying it, but the issue persists.Given that DFU works perfectly, I assume the hardware is fine, and the problem is somewhere in the firmware configuration?I’m attaching the USB schematic section below. Has anyone experienced something similar? Any sugg

I want to route the internal comparators on the STM32G0B1 to the inputs of the encoder module. I can't find a way to do this in CubeMX. When I select "Encoder Mode" in the timer configuration, there is no option to route the comparators to the timer. Is this configuration possible?

Hi ST team,I'm working with the STM32U5-DK2 board and implementing USB Device MSC class using USBX and external flash (via OSPI) as storage. Everything works fine when VBUS sensing is disabled in STM32CubeIDE — the host detects the device correctly as a USB MSC device.However, when I enable VBUS sensing in CubeIDE (i.e., "Device Only" mode), the USB device is not detected at all by the host (no enumeration).Questions:Why does enabling VBUS sensing prevent the device from being enumerated as a USB MSC device?What are the minimum required CubeMX configurations to support VBUS-based detection (using PA9), but without using UCPD or USB PD features?Is there any internal pull-up or alternate pin setting that needs to be done for PA9 in this context?

Hi I am trying to achieve output compare mode in TIM1 in stm32f407vgtx board . I am trying to generate a delay of one ms and running a timer clock at 1mhz after divide it with prescaler. I have enabled upcounter,TIM_CCER_CC1E bit in CCER, TIM_EGR_CC1G bit and loaded CCR1 as 999(one ms) and ARR as 0xFFFF but my counter is exceeding the value and it is going upto 65535 which is the ARR value . I have not configured OC1M[2:0]bit (capture/compare mode register 1 (TIMx_CCMR1)) as I am not toggling PA8 or any thing on that pin which is linked with TIM1_CH1.  I want when ever counter value matches CCR1 it generates interrupt and I am toggling led inside that IRQ handler. Can you help me where I am wrong please. B.R Ashish

Hello,I'm using LPTIMR1 to wake up from STOP2 mode and then use ADC to read battery voltage range from 10 - 15 V. The wakeup to use ADC is random as per user input (in seconds, minutes or hours).static void MX_ADC1_Init(void) { ADC_ChannelConfTypeDef sConfig = {0}; hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = ENABLE; hadc1.Init.LowPowerAutoPowerOff = ENABLE; hadc1.Init.ContinuousConvMode = DISABLE; hadc1.Init.NbrOfConversion = 1; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc1.Init.DMAContinuousRequests = DISABLE; hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; ha

Hey everybody. I had 3 STM32 F401RE for my robotic project but now I got "no stlink detected" error. Once I turned my computer off with shot down and then on again I couldn't get stm32 to work again, that's why one of them went away, the other one was when I turned the driver on and off while the stm32 was connected to the stepper motor driver and then it went away, i don't remember the other one. My first question is are these stm32s completely broken, can i save them? My second question is if they are completely gone, how can i save my next purchases?

Hi, I am using stm32f46-disco working with client for TCP server, my problem is when I start with one client it works successfully but when I connect another client (also stm32f746-disco) it receives data slower than the previous client and swaps with the first client (meaning the first client now receives data slower than the second client). Do you know this problem?/* * ethernet.c * * Created on: May 3, 2024 * Author: ACER */ #include "ethernet.h" #include "../element/element.h" #include "../user_eeprom/user_eeprom.h" #include "lwip/tcp.h" #include <string.h> #include <stdarg.h> extern struct netif gnetif; static err_t ERROR_DEBUG; // debug static struct tcp_pcb *user_pcb; char CurrentState[32]; char data_server[32]; char tcp_ip[64]; static err_t user_config_server(void *arg, struct tcp_pcb *newpcb, err_t err); static err_t user_poll_callback(void *arg, struct tcp_pcb *pcb); static err_t user_recv_cal

Greetings Everybody,I have Nucleo-F207ZG board. I want to try RTC feature of this STM32. In past i did try using RTC but after some days the time used to drift and it was like 4 seconds ahead than actual time after on week and after 1 month time was ahead like almost 15 seconds. If you have any step by step procedure of RTC smooth digital smooth calibration then please share. I have gone through various application notes but i am getting more confused... Please help me.

I've got a program running on a dual-core STM32 (the STM32H747IGT6 if you're curious) and right now it's doing a pile of SCB_CleanDCache_by_Addr() and SCB_InvalidateDCache_by_Addr() to keep shared memory in sync between the CM4 and CM7. I was thinking it would be easier if I just set the shared area to non-cacheable, but when I configure the MPU the system will work for a few seconds and then hang.The shared memory area is called 'buffer_control' and I padded it to 512 bytes. My MPU configuration looks like this:SCB_EnableDCache(); SCB_EnableICache(); /* Disable the MPU */ __DMB(); /* Make sure outstanding transfers are done */ SCB->SHCSR &= ~SCB_SHCSR_MEMFAULTENA_Msk; /* Disable fault exceptions */ MPU->CTRL = 0; /* Disable the MPU and clear the control register*/ /* Configure the MPU attributes as WB-WA for SRAM */ MPU->RNR = MPU_REGION_NUMBER0; MPU->RBAR = (uint32_t)&buffer_control; MPU->RASR = ((ui

Hello everyone, we are using STM32L152RBT6A for our development. Our PCB has a battery and we use the RTClock, no matter of the way of work - frequent power  Off/ On.           We kindly request some help in using „80 byte backup register“ like an energy independent memory, as we don't find any other suitable parameter in our processorHas anyone tried using this memory?Thank you in advance

Please suggest recommended values for EMMC for the following parameters:Max Read/ Write speed supportedWhat is maximum memory density it can support?What is the bus width it can support?Any recommended NAND based EMMC part number of memory density 16GB and 3.3V supply voltage, which performs efficiently with STM32H757XIH6?

I'm trying to implement the USBX Audio class using the board STM32U5A9J-DK and the USBC port present on the board.I've opened the default project from TouchGFX selecting the ThreadX one. I then opened the .ioc file in the CubeMX and activated the USB_OTG_HS in Device_Only Mode. I then went into the Middleware section and activated the USBX Core System, Device CoreStack HS and Device Controllers HS and then, under the Device Class HS I've turned ON the Audio Class.I then copied the code in this example (usbx/Projects/STM32H743I-EVAL/Applications/USBX/Ux_Device_Audio).The code correctly compiles and execute (the GUI still works and entering into the debug mode I'm seeing the USBX has been initialize).The issue comes when I connect the board using the USBC to the PC. I'm seeing the LED in the board turning ON, basically

Greetings,I have connected external crystal of 32.768 KHz to STM32F205RG for RTC time keeping purpose. I have also enabled RTC output on pin PC13. Below is my code for RTC Initialization ...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(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_RTC_Init(); if (HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR1) != 0x32F2) { /* Configure RTC Calendar */ RTC_CalendarConfig(); } else { /* Check if the Power On Reset flag is set */ if (__HAL_RCC_GET_FLAG(RCC_FLAG_PORRST) != RESET) { } /* Check if Pin

Hello everyone,I’m working on an STM32H7S3L8H6H with two XSPI interfaces:XSPI1 (Quad-SPI) connects to an external PSRAM. XSPI2 (Octo-SPI) drives an external NOR flash, from which my application code executes directly.In my bootloader I configure both and start the external memory manager:MX_XSPI1_Init();MX_XSPI2_Init();MX_EXTMEM_MANAGER_Init();  This maps the flash at 0x7000_0000 and the PSRAM at 0x9000_0000. After jumping to main() in the application (which is executing from the XSPI2 flash), I’ve marked XSPI1 as “Runtime Context” in CubeMX and still call:MX_XSPI1_Init(); But it hangs here:// inside MX_XSPI1_Init(): if (HAL_XSPIM_Config(&hxspi1, &sXspiManagerCfg, HAL_XSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) { Error_Handler(); // stops here

Hello,  is there any changes about  MFG label of the STM32 MCUs products ?we receive the new DC product, and found the "Assembled in: Site" was miss ,which shall be show on the second line of the label, pls check below photos , is it correct ?if yes , is there any MFG document shows this change ？ is any PCNs provide？Many thanks！

Hello,I am working on creating a timer function using the timer peripheral of the STM32H743II, with a timer range from 1 second to 3600 seconds.I'd like to ask a question regarding the frequency accuracy of the timer.Let me first explain the current timer configuration I’m considering.At this point, I am feeding a 19.2 MHz clock signal into the HSE, and have configured the APB1 Timer Clock to be 201.6 MHz. I plan to use TIM2 and adjust the prescaler(PSC) and ARR values to achieve a timer period ranging from 1 to 3600 seconds.Since the timer period is given by:Timer Period =

Hello, I have found various guides on how to configure the RTC as wakeup-source. However, they do not seem to apply to the C0 family.In the CubeIDE I cannot find the depicted settings on RTC, (most notably, no option to select internal wakeup and configure wakeup counter and clock) Is this not implemented on the C0 family? I just want my MCU to wake up from sleep mode every x milliseconds. What else can I do to implement this on a C011? ThanksLucas

I am using the NUCLEO-L433RC-P development board and in the process of designing my own PCB.But I am unsure what to do with the VDD12 pinsOn the NUCLEO-L433RC-P development board they are connected to an SMPS using an analogue switch.If I dont use an SMPS for the VDD12 pins, do I just connect the VDD12 pins to 100nF capacitors to GND (as shown in the schematic below) ?My project is battery powered (LiPo 1000mAh) so power consumption is important, but I already have an SMPS for 3.3V and 5V and running out of board space so would prefer to avoid adding yet another SMPS.  Using an SMPS for the VDD12 pins might also require additional level shifters for UART, SPI and I2C.   

1. According to datasheet, STM32U0 family have an IRTIM (Infrared interface). But this section is missing in RM0503. Also in SYSCFG_CFGR1 there is missing IR_MOD and IR_POL bits.2. In RTC section Figure 297 it is missing RTC_OUT2 and RTC_REFIN pins. See same block for STM32G0 family.3. In RM0503 section NVIC table 54, I think that PVD_PVM should be PVD / PVM. Also ADC_COMP should be ADC / COMP. WWDG should be WWDG / IWDG. TIM6_DAC / LPTIM1 should be TIM6 / DAC / LPTIM1.4. Usually each section name ends with an abbreviated name in parenthesis. Ex: Low-power universal asynchronous receiver transmitter (LPUART). And this abbreviated name is also in bookmarks on the left size of each RM. But (LPUART) is not in bookmarks in several RM possible all from the beginning. 

Hello,We've been working with the B-G474E-DPOW1 kit with the intention of building a custom project board using the G474E. I've had success starting with the example buck/boost project in the STM32CubeIDE (1.18.1). Now though I need to move the HRTIM CHC/D timer location used in the example design to the CHE/F locations.After struggling with CubeMX without success to make the change from C/D to E/F, I reverted to not using .ioc at all and instead searching and replacing what was necessary to map things over to the CHE/F timers. After fixing several mistakes, the system is very close to working as it did with the unmodified example. But there's one BIG problem remaining that I've spent hours in the debugger chasing things down. I don't get any output on CHE (PC8/9) they are always stuck LOW. CHF (PC6/7) works perfectly. I've confirmed both timers are configured the same. Any insight is appreciated!Thanks,Dave 

Hello,STM32F411CE microcontroller.What is FCLK Cortex clock for the STM32F411CE microcontroller (see Figure 1 below from the STM32CubeMX (Clock Configuration tab))? Is this clock related to processor clocking? As far as I know, the processor is clocked from the AHB bus.    Figure 1: 

Good Morning, I want to use a GPIO input or a ADC input as a logical reader which gives 0 or 1 if it reads 0 or 12 Volts. However, I know the maximal rating is normally 3.6 volts for those pins. However, i saw that the Adc can still read 5 volts, it willl only be stuck at its maximal value (which is not a problem for me). So here is my quesiton: Can i read 12 volts with the GPIO or the ADC without hurting my board?Best regards

Hi, I am using STM32L476RG-Nucleo64 boards for one of my ultrasound projects. Basically, the process is:1)Send 2MHz pulses with pwm2) Sample 1000points with 8-bit interleaved ADC(500 each) and DMA3) Send ADC data through SPI.4) Wait TIM3 to trigger again for both ADC and PWM and back to 1Everything is working fine, only problem is that I need the time label of each sample -Or somehow calculate the Δt between them- in ADC so that I can identify the Δt of some peaks positions in the data but it is troubling me because of maxed ADC speedI made ADC interleaved, 8-bit and 2.5 cycles to work at max speed, not like a timer-triggered ADC. Therefore I cannot measure the total 1000 sampling time for dividing by 1000 (Not sure if all samplings are done with same speed tho).I tried to measure the time using DMA callback and ADC callback using DWT but it is s

I have an application in which I'm required to check the status of an accelerometer 5000 times per second but it's a battery powered device so I want to minimize power consumption. I'm using an STM32L053C8 on a custom board with an external LSE crystal but I think that this would be a problem with any STM32.I've tried setting up LPTIM clocked from the LSE source to generate interrupts and then putting the MCU into stop mode. The problem is that you can only generate frequencies which are an integer fraction of the LSE frequency so 32768/6 = 5461 Hz which is too fast for my application. 32768/7 = 4681 Hz is too slow.Using the RTC clocked by the LSE is even more restrictive. The best that I can see would be an integer fraction of 16384 Hz.The regular timers TIM2, TIM6 etc don't work in stop mode.Am I missing something ?

Hello,A design I am working on utilizes a LSE crystal with the following parameters:f = 32.768kHzCL = 12.5pFCo = 0.9pFESR = 50kR MaxDL = 1uW MAXI am calculating gmcrit ~ 1.52uA/V.  According to table 5 in AN2867, the drive level should be set to Medium High, will REXT required?  The design is already produced without REXT so adding it is not advised if avoidable.I don't have the instrumentation to measure the actual drive level as it requires ~0.1pF probes for proper measurement.  There is no indication of LSE max drive current for the H7, the datasheet only specifies 550nA IDD at medium high.Should I be concerned that Medium High may violate 1uW?Thanks