STM32 MCUs Products

For my project I'm using an STM32F743VIT6 with ADC1 and ADC2 in 16-bit differential mode.In the reference manual (RM0433) §25.4.7 it is written:Converted value = ADC_Full_Scale / 2 x [1 + (VINP-VINN)/VREF+].For 16 bits, ADC_Full_Scale is 0xFFFF. What exactly is ADC_Full_Scale / 2 ? 32768 (0x8000) or 32767(0x7FFF), the value for 0V input?I ask this question because in both cases there are not the same number of steps between 0 and the median value and between the median value and the full scale!

Hello,I have a question about the usage of the MCE in the STM32H7RSI have the STM32H7S78-DK boardI'm starting with a project that show images to LTDC with images on the flash (copy with DMA2D) and the framebuffer is on the PSRAM.My project works with this tuto to get the flash running : https://github.com/ST-TOMAS-Workshop/stm32h7s_workshop/tree/main/1_external_memoryAnd this one to have MCE working : https://github.com/ST-TOMAS-Workshop/stm32h7s_workshop/tree/main/3_external_memory_encryptionThe project seems to run well beacause my led blink like it should but !defining my images in "const uint16_t ecran_start" now (since MCE is enable) gives me black images (in debug session i see the variable in Expressions correctly) .Removing the const the images shows but by internal ram will be filled very quickPutting the image in my PSRAM section it is glitched on the screenMy framebuffer is in PSRAM and works because DMA2D show a red rectangle that i programmed (DMA2D R2M)Putting framebuffer

Hi All,I have written a baremetal code to initialize the USART2 of STM32F401RE and print HELLO WORLD. The code does not use HAL and rather accesses and writes to USART2 peripheral registers using the C pointers. I have cross verified the code multiple times and have tried multiple methods to get the print, but I am not seeing any output on the teraterm/puTTY. I even used USB-TTL cable for this purpose by connecting the PA2 and PA3 (on the ST-Morpho connector) to TTL's cable Rx and Tx pin respectively. But there is no output. What can be the reason? Below is my code:#include "stdint.h" #include "stm32f4xx.h" #include "string.h" typedef struct{ volatile uint32_t REG_MODER; volatile uint32_t REG_OTYPER; volatile uint32_t REG_PUPDR; volatile uint32_t REG_IDR; volatile uint32_t REG_ODR; volatile uint32_t REG_AFR[2]; }GPIO_REG_DEF; typedef struct{ volatile uint32_t REG_SR; volatile uint32_t REG_DR; volatile uint32_t REG_BRR; volatile uint32_t REG_CR1; volatile uint32_t REG_

I'm working on a DMA routine for my SPI DAC, and I've loaded up a buffer with the commands to make a sine wave. But when I check it with the oscilloscope, it's just stuck at 2.05V, which is actually the very first command in my sequence.I've spent hours on it, trying everything from physically wiring LDAC low to fiddling with different write commands, and still no luck.I'm really hoping this is something super simple I'm missing, because I'm still pretty new to embedded and C.// AD5668_DMA.cpp #include "AD5668_DMA.h" #include "stm32f4xx.h" // AD5668 “write input & update N” command base static constexpr uint8_t CMD_WU = 0x30; AD5668_DMA::AD5668_DMA(uint8_t csPin, uint8_t dacChan, bool circular) : _csPin(csPin), _dacChan(dacChan & 0x0F), _samples(0), _bytes(0), _buf(nullptr), _circ(circular) { pinMode(_csPin, OUTPUT); digitalWrite(_csPin, HIGH); } void AD5668_DMA::begin(const uint16_t* wavetable, uint16_t size) { _samples = size; _bytes = size * 4; // 4 bytes per sample

Hello,I'm attempting to make my MCU shift between STOP and RUN mode using a button. When I press the button the CPU stops, however, upon pressing again it fails to start the CPU. I know this form the LED indicators.The strange part is that when I place a debug point, or anything debug related, the CPU wakes and immediately and runs the ISR as if it were waiting for the stop mode to resume.Is there some setting I need to enable to get the GPIOs to funtion in stop0? I have had a look at other forum posts and MX examples but have not seen anything, or I have missed it.My ISR:void HAL_GPIO_EXTI_Falling_Callback(uint16_t GPIO_Pin) { if (GPIO_Pin == Button_Pin && powerDownState == 0) { powerDownState = 1; HAL_GPIO_WritePin(Green_LED_GPIO_Port,Green_LED_Pin, GPIO_PIN_RESET); // Enable pull-up on button HAL_SuspendTick(); HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI); } else { HAL_ResumeTick(); powerDownState = 0; HAL_GPIO_WritePin(Green_LED_GPI

[Request]I would like to know the correct procedure for initialization using the INIT bit of the FDCAN's CCCR register.[Situation]1) To reset the FIFO status, we are only performing the initialization start using the INIT bit of the FDCAN's CCCR register, and after confirming the end of initialization by reading the same bit, we are setting the RX filter in the Message-RAM (information not changed by INIT) to enable RX-FIFO reception processing. However, despite data that should be acquired by the filter being present on the CAN bus, no RX interrupt is occurring.2) When checking the FDCAN status using the CAN_MCAN_PSR register in the above situation, the ACT bit in the FDCAN_PSR register remains at 01 (idle) and does not change to 10 (Receiver).3) When we stop and restart data transmission on the CAN-BUS repeatedly, the ACT bit becomes 10 (Receiver) approximately once every 20 times, and the reception processing begins.4) When a hardware reset is performed on both the transmitter and r

I'm having problems enabling USB on STM32H503.  This happens on both my custom board (STM32H503CBT6-based), as well as on MB1814B (STM32H503RBT6-based).  I observe no USB connection, no USB IRQ being invoked, no hardware handshake.  Here's the simplest repro:1. in STM32CubeIDE, v.1.18.0 (same with v.1.17.0), create a new STM32 project for STM32H503RBT6 core (CBT6 for my board)2. in .ioc, enable I-Cache, SWD, and USB.  In "Middleware and Software Packs", the USBX section, enable "Core System", "Device CoreStack FS", "CDC ACM"3. close .ioc, build the project4. connect MB1814B to the host on both sides: USB and ST-Link.  In my case, they are connected to the same USB hub, and the hub is powered after both sides are connected5. flash the compiled firmware6. notice that the host only sees the piped-through-SWD-end Virtual COM, but fails to see the USB connection on the device side.  Observed under debugger, the firmware fails to invoke the USB interrupt.  

Hi guys, first of all, after many hours of study of this peripheral i have "few" points. I will try to be as nice and calm as actually possible.1: Does anyone in ST review documentation and code you are generating? RM0456 17.4.2 paragraph 2:"After enabling/starting a GPDMA channel transfer by writing 1 in GPDMA_CxCR.EN, aGPDMA channel interrupt on a complete transfer notifies the software that the GPDMAchannel is back in idle state (EN is then deasserted by hardware) and that the channel isready to be reconfigured then enabled again."What does it mean? Do i have to start GPDMA channel and then configure it? (Nonsens) Shall be channel configured before it? (obviously) Transfer Complete interrupt is triggered right after enabling/starting channel? Do i have to somehow filter it? LEARN HOW TO WRITE DOCUMENTATION!2: How the hell shall be ports used? You recommend to use Port1 for memory access and Port0 for peripheral acces (in case the periph-memory transfer is used), but when you ge

I just got my NUCLEO-N657X0-Q board, since i have never used a stm32n6 board before, i decided to start from the stm32cubemx. I started my project from ST board, and created a simple test program for MDK-ARM project.After I opened the project in the Keil v5 and rebuilt the whole program, with no warnings or errors, I found that i can't download my project to the board. It showed an error of "invalid rom table".Then I decided to use the STM32CubeProgrammer to erase the whole chip, as I did before when developing stm32h7. I found that the flash size in the target information colums shows "null".And when I used the full chip erase function, it shows: Mass erase operation failed. Please verify flash protection.(p.s. I'm not a native English speaker, so pardon my poor grammer :( )

I'm getting an hard fault when trying to start ECC on SRAM3 with a very simple project doing just ECC enabling. I tried clearing the SRAM before calling HAL_RAMCFG_StartECC or by using HAL_RAMCFG_Erase, but the result is exactly the same. Here attached the sample project I use. Any suggestion or code examples on how to solve this issue?  

I am using STM32H747 MCU with OV5460 camera. The FPS i got from the camera is around12-13 fps is that any method to increase the frame rate.I tried by increase PLL clock but there is no image received.Thanks

Hello,We are currently using a STM32U5G9 with MIPI Port 2 lanes talking to ST7701S TFT driver. We found on power up when we have a lot of error in DSI_ISR0.PE3 and DSI_ISR0.PE4 are set, display do not start. Definition of this error is : This bit indicates the LP1(0) contention error ErrContentionLP1(0) from lane 1(0). Not finding to much info on this... Any idea?  

I wanted to generate without Phase shifted PWMs between HRTIM  and Tim1 .How can I do it? thanks for your support! 

Hi everyone,we are moving our design from usb full speed to usb high speed using STM32F76VI.We want to use the suggested module STULPI01A in order to achieve this.On datasheet is specified to use a precise reference clock.Since our application use a gnss receiver which is quite sensitive we opted for using the PLLCLK routed out directly from MCU.Is this system enough precise or are there any weakness in using this? Thanks.

Hi,While working on the code for an STM32H7B0, I'm having issues with the blanking function of COMP1. Specifically, it works correctly when the comparator is in non-inverting mode, but if I invert the comparator's output (to detect falling thresholds), the blanking stops working. According to the datasheet, the blanking gate should be placed after the output inversion, so it should work whatever is the outpup polarity in the same way. In practice, however, it seems to be positioned before. Does anyone have any ideas?I'm using dac1_ch1 as in- , analog signal connected to pin inp PB0,and tim1_ch5 as blank 

Hi, SPI CR2 is missing from RM (RM0383 Rev 3) table in 20.5.10 SPI register map (page 610). Please update.   Best,Alessandro

Trying to get MD5 hash acceleration working on the Nucleo-H563Zi. I can get SHA1 hash engine to work via bootstrapping a project via CubeMX, but for some reason MD5 is not a selectable option for the hashing algorithm in CubeMX.  All other algorithms can be configured and work, but MD5 is not an option. The Datasheet for the STM32H562/3 says that the Crypto engine offers a MD5 hash, but I can't seem to configure it via CubeMX or by updating the generated code in hash.c to select the MD5 algorithm within MX_Hash_Init(). Is MD5 not supported on the H5?  There are no MD5 examples in the github example repo despite the datasheet claiming the crypto/hash accelerator supports MD5.

Hello, I have 2 NUCLEO-H563ZI boards connected to each other as required, one running the "I3C_Target_Private_Command_IT" example and the other running the "I3C_Controller_Private_Command_IT", i also have a logic analyzer connected to monitor the I3C communications, however the setup is not working as expected, the "target"  ACKs the initial broadcast from the "controller", but NACKs the subsequent broadcast after the "ENTDAA" CCC Any thoughts on what could be wrong here ? I tried debugging but the "target" board simply does not seem to be observing any interrupts/events during this whole "ENTDAA" CCC transmission from the "controller"

I've got some code running on the C4 in an STM32H747IGT6, it's just waiting for the ADC to have data and then reading it: while (!LL_ADC_IsActiveFlag_EOC(ADC1)) {} __disable_irq(); start_timer = TIM5->CNT; LL_ADC_ClearFlag_EOC(ADC1); adc_data = LL_ADC_REG_ReadConversionData32(ADC1); data = ((float)adc_data) / 65536.0f; // Normalize from 0..0xFFFF (-4 to 4V) to 0..1 end_timer = TIM5->CNT; uint32_t icsr = SCB->ICSR; __enable_irq();With IRQs disabled (as shown here), TIM5->CNT shows the code takes 6-8 ticks but if I comment out the calls to __disable_irq() and __enable_irq(), the code takes as many as 146 ticks and I'm trying to figure out why.  TIM5 has no interrupts enabled and is running at full speed (240 MHz) so ticking once every 4.1666 ns.If I look at the value of SCB->ICSR it's almost always 0x400000 which means ISRPENDING but VECTPENDING is zero.In my code I'm only enabling 3 interrupts and I've verified none of them are firing.How can I figu

Moved from MPUs section - STM32L100 is an MCU, not an MPUI compare this my layout board (with outer st-linkv2 connected), and stm32l100c disco.stm32l100c disco does not have such a question. It will show "Error 57: Illegal Address(0x8000000)".And I disable download to flash, this error is disappeared.However, the program runs in 0x1ffffxxxx,not flash (0x8000000). It won't run my codes (no flash could be found?). I could not run my codes after download, either.But I am totally sure these codes could be executed in stm32l100c disco.And help?   

Hello,I plan to use STM32G031Jx in a SO8N package and use embedded bootloader over UART.According AN2606, both USART1 and 2 can be usedBut PA3 is not available on SO8N, so remains only USART1.But USART1 is used by bootloader on PA9,10 which are not directly available on SO8N packages.These pins become available after remap (SYSCFG_CFGR1) which is default 0.Also in AN2606 says thatSo question, how this is working?These devices comes (blanks) having remapping activated from SYSCFG_CFGR1?It means that PA11,12 cannot be used anymore, because if I remap them, I will not be able to enter to bootloader at next reset, right?Thanks for clarifications,   

I've been on an adventure trying to get my first CubeMX/STM32 project off the ground.  Here's as much context as I can give for my debugging process, and hopefully someone can spot what I'm missing. Dev Board: Nucleo-STM32H563ZIT-144 (Arm M33 Core)IDE: VSCode running STM32 V3 (Pre-Release) Toolchain (not using Clang -> using VSCode C/C++ Language Server for Intellisense) on Windows 11Build Tooling: CMake and GCC with code generated from CubeMX using FW/HAL v1.5.0Middlewares Used: ThreadX, NetXDuo, USBX Initial Debugging:First off, the rest of the code base has been working fine, the general ThreadX Application, Netx stack/App, and any additional code I have added hasn't generated unaligned access faults.  I have not been using the MPU, and have explicitly disabled it in the entrypoint using HAL_MPU_Disable() as well as inside Cube MXmain.cint main(void) { /* USER CODE BEGIN 1 */ /* Disable MPU */ HAL_MPU_Disable(); /* USER CODE END

Hello,I use a STM32F103 MCU and I use the RBIT instruction (as an CMSIS inline functinon). The instruction works properly and I can see the rbit instruction in the disassembly window (for this project I have to use an old TrueSTUDIO IDE).According to the ARM documentation this MCU could not execute the RBIT instruction because it is a Cortex-M3 r1p1 core (CPUID: 0x411fc231) which does not have this instruction. In spite of this the instruction seemly works and the "PM0056 Programming manual" (STM32F10xxx/20xxx/21xxx/L1xxxx) mentions too the instruction without making any difference about the revisions.Can someone help clear up this confusion?  

Hello, I have a problem with SysTick interrupt on STM32L072KZUX.I am using the latest version of STM32CubeIDE + the latest package for my MCU - FW_L0 1.12.3. An absolutely clean project, which was created in IDE and flashed into the device using ST-Link, starts up fine after flashing, but when the SysTick count reaches overflow and an interrupt should be called, for some reason the program goes to the wrong address (PC = 0x1ff00dd0), of course the interrupt handler itself is declared and there is a pointer to the function in the assembler file. Moreover, it does not matter which framework to use: LL or HAL. I checked the vector table both in the firmware image and in the microcontroller memory, all addresses are correct. Moreover, it does not matter how to use it. We checked it on 2 chips from the same batch, a similar program flashed into NUCLEO-L073RZ works correctly. int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration-----------------------

I have a question regarding internal PLLs.I would like to know the jitter of the PLL in the STM32H743XGH6.I could not find a PLL Characteristics table that would have the answer I want to know. I have seen posts about jitter in various other PLLs.However, I cannot decide how much to trust that information because of the different models.Perhaps it is very unlikely that these jitter values will adversely affect the system, but I would like to have some data to base my decision on. Does anyone know of any data on this?