STM32 MCUs Embedded software

I have an ILI9341 SPI screen and a small self-made library that can display different numbers on the screen. I want to be able to update the screen (display a new number) every time there is an interrupt. I have tested the screen functions independently, and they work properly. But when I call them from the interrupt handler, they fail. The board is STM32F407G-DISC1. Timer configuration static void MX_TIM2_Init(void) { /* USER CODE BEGIN TIM2_Init 0 */ /* USER CODE END TIM2_Init 0 */ TIM_ClockConfigTypeDef sClockSourceConfig = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; /* USER CODE BEGIN TIM2_Init 1 */ /* USER CODE END TIM2_Init 1 */ htim2.Instance = TIM2; htim2.Init.Prescaler = 999; htim2.Init.CounterMode = TIM_COUNTERMODE_UP; htim2.Init.Period = 335900; htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_Base_Init(&htim2) != HAL_OK) { Error_Handler(); } sClockSourceConfig.ClockS

Hi there !i work with DS2482 I2c to one wire . After i send the command reset i need the read the status register until i find one bit at 1, so i wrote my routine in this way  static uint8_t DS2482_Status_Register(void) { uint8_t register_status=0; uint8_t data=0; while(register_status !=0x02 ) { Master_Recive_Data(DS2482_Addr, &data, 1); // HAL_Delay(1); dato= data; register_status = data; register_status &= 0x02; } if(register_status != 0x02) { return HAL_TIMEOUT; } return HAL_OK; } when i run the program i recive error 4 from i2C formvoid HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) { } But if in the code below i put one delay of 1ms everything work perfect . So there is one "elegant" way to resolve the problem  ? or there are other solution  ? Thanks a lotSergio

I am working on STM32N6570-DK board. I am trying to run a code for three channels ADC+DMA, INP8, INP10, INP16. The output at USART is coming out to be zero in all three channels. I am attaching the code here. 

Hello community members, I am using a STM32H5 with acitvated MPU region. I want to check and test dection of nullpointer access.Because of safety reasons. I have configured and activated the mpu so far. When doing a write access to the declared null pointer, the MemManageFault Handler is called as expected. uint32_t *m_pTest = nullptr;*m_pTest = m_value; // -> MemManageHandler is called (as expected)when doing a read access, the BusFaulthandler is calledm_value = *m_pTest; // ->BusFaultHandler is called (not my expectation)//here my mpu configuration and settingsSCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk |SCB_SHCSR_BUSFAULTENA_Msk |SCB_SHCSR_USGFAULTENA_Msk;/* Configure the MPU to prevent NULL-pointer dereferencing ... *///check nullpointer access Region1MPU_InitStruct.Enable = MPU_REGION_ENABLE;MPU_InitStruct.Number = MPU_REGION_NUMBER1;MPU_InitStruct.BaseAddress = 0x00U;MPU_InitStruct.LimitAddress = 0x200U;//512Byte for exampleMPU_InitStruct.AttributesIndex = MPU_ATTR

CubeIDE: v2.0.0CubeMX: v6.16.1Debugger: ST-LINK/V2 V2J46S7Hello,I'm attempting to setup a dual core project using STM32H757XIH MCU on CubeMX. I've generated and imported the project for CubeIDE. I've configured the Trace and Debug -> DEBUG for "Serial Wire" with M7 and M4 selected with Cortex-M7 as the initializer. I've configured one pin (PJ10) to be an output for a user LED.I've attempted to follow AN5361 "Getting started with projects based on dual-core STM32H7 microcontrollers in STM32CubeIDE" when configuring the debug profiles for the M7 project and M4 project while leaving the rest set to default.I've attached the logs to this post. Am I missing something when configuring the processor? Let me know if I need to add anymore information on my configuration.

STM32G491KEU3 on custom board. Using STM32CubeProgrammer to read/change option bytes.With BOOT_LOCK unchecked I use STM32CubeIDE to flash and debug my project. However SysTick_Handler() is never called, so HAL_GetTick() always returns the same value (zero). With BOOT_LOCK checked, HAL_GetTick() returns incrementing tick counts as expected.I thought I understood the ref manual description of BOOT_LOCK. Does BOOT_LOCK do other things?

Hello, does anyone help me with example for devkit with FatFs on uSD card? Thanks

I am trying to get the USB CDC (Virtual COM Port) working on my STM32H743VIT6. I have successfully used this exact setup in the past, I would normally flash the code via ST-Link, plug in the USB micro USB cable, and the COM port would appear in Device Manager for Tera Term. However, currently, the device refuses to exit DFU mode and enumerate as a COM port, even after flashing the application code. step that i have done: 1. I pull BOOT0 to 3.3V to enter the bootloader. Device Manager correctly shows DFU in FS Mode 2. I upload my .elf file (My application code includes HAL_PWREx_EnableUSBVoltageDetector(); in main().) using STM32CubeProgrammer. The upload verifies successfully. 3. I disconnect power, move BOOT0 to GND, and reset Issue: The Device Manager still shows "DFU in FS Mode". It does not switch to the Virtual COM Port (CDC). My Question: What specific steps should I take to force the board to exit DFU mode.  I want the device to boot directly into my application and enumera

Hello, I would like to know the H264 VENC performance for the STM32N6 using the ST example: STM32Cube_FW_N6_V1.1.1/Projects/STM32N6570-DK/Applications/VENC/VENC_RTSP_ServerI have a hardware setup with a nucleo-n657x0-q + a ST B-CAMS-IMX camera module.Question 1: The example provided by the STM32CUBE_FW is for STM32N6570-DK. Will it also work for the nucleo-n657x0-q  Thank you.

Sir can i use the stm32 cube ide for the commercial in free of cost. is there any limitation pls tell me

Dear ST Community, I have a working application for USB PD SPR and EPR and now I want to change the voltage (power profile) during an active contract.So e.g. I have 5V currently and want to request 9V from the source, or I have 20V currently and want to switch to 28V (EPR).How to do that? According to the USB Specification you would send a "Get Source Capability" Request so I used USBPD_DPM_RequestGetSourceCapability() [or USBPD_PE_Send_ExtendeControlMessage(m_uPort, USBPD_EXTENDED_CONTROL_EPR_GETSRCCAPA) in EPR]. Then the source responds with it's capabilities. USBPD_DPM_SetDataInfo gets called with the PDOs but USBPD_DPM_SNK_EvaluateCapabilities is never called afterwards....In SPR Mode nothing happens, voltage stays the same. In EPR Mode 30ms later a hard reset is triggered. Why does the ST Stack not Evaluate Capabilities after successfull reception of PDOs? According to USB Spec as a Sink we always need to respond to a capabilities message with our "wish".....&n

It would be helpfull to have couple of function in addition toHAL_GPIO_WritePin( GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState )for cases when pin state is known in advance (not result of calculation in runtime)void HAL_GPIO_SetPin (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin) { assert_param(IS_GPIO_PIN(GPIO_Pin)); GPIOx->BSRR = (uint32_t) GPIO_Pin; } void HAL_GPIO_ClearPin (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin) { assert_param(IS_GPIO_PIN(GPIO_Pin)); GPIOx->BRR = (uint32_t) GPIO_Pin; }Props:1 One parameter less2 One assert less3 No condition check4 Less typing5 Less work in runtime6 Better search. One can serach SetPin or ClearPin instead of all HAL_GPIO_WritePin at first and then see pin state value in common list.7 Sense of command in one place instead of combination of command_name + parameter_value8 More uniform with HAL_GPIO_TogglePin. Set, Clear, Toggle have the same signatureEdited to apply source code formatting - please see How to insert

Hi,// WM8904.c int32_t WM8904_Init(WM8904_Object_t *pObj, WM8904_Init_t *pInit) // ... if ((WM8904_CurrentDevices & WM8904_OUT_HEADPHONE) == WM8904_OUT_HEADPHONE) { ret += WM8904_SetVolume(pObj, VOLUME_OUTPUT, (uint8_t)pInit->Volume); } // ... /* Store current devices */ WM8904_CurrentDevices = (pInit->OutputDevice | pInit->InputDevice); in line 4, WM8904_CurrentDevices is still 0, so the gain is not set.I'd change the line this way: if ((pInit->OutputDevice & WM8904_OUT_HEADPHONE) == WM8904_OUT_HEADPHONE) { ret += WM8904_SetVolume(pObj, VOLUME_OUTPUT, (uint8_t)pInit->Volume); }  

Hi,I'm busy with my own BootLoader. I can erase the flash, required to store the program. But writing to the flash causes a HardFault. (I also write to flash in my application to store the configuration. That seems to work, so (normally) I can write to the flash without any problems).My routine looks as follows (msg.Data is the received information from my PC. The contents look fine): HAL_FLASH_Unlock(); uint64_t* pData = (uint64_t*)&msg.Data; while (m_CurrentAddress < tempEndAddress) { HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, m_CurrentAddress, *pData); m_CurrentAddress += 8; pData++; } HAL_FLASH_Lock(); The debugger shows this information:I do not know how to (further) debug this information.Thanks in advance.Greetings,ErX

Hello, i'm trying to using mce encription for external flash. I have the stm32h7s7-dk eval board.my mce configuration for the external memory init; my mce configuration for the boot main I followed the tutorial series https://www.youtube.com/watch?v=JxhKmVUB2Ws&list=PLnMKNibPkDnFQXYK0ztHV9iMVS6EAtKpD&index=10. And i tried allthing and i applied successfully at my eval board. But the mce is so different. In the tutorial the instructor used different board hence the board is using mce1. But i'm using the mce2 because the xspi2 connected mce2. And the mce2 couldnt support the aes.My memory write and memcopy methods;key and other variablesDecrypted result (wrong values, it must be start from ram base)encripted file; Could you help me ?

Hello guys,I am using Ethernet and USB together. Ethernet in rmii mode without RTOS  and Using USB as cdc,after flashing the program it runs normally but  when i ping or Access  the IP from web :spider_web: it goes to hard  fault handler If USB init () is Commented then everything is working fine but when uncommented it goes to hard fault handlerso i want the solution to use  USB and Ethernet simultaneously and can  it be used without RTOS or should we use RTOS?

I'm trying to develop a basic PDM microphone to PCM audio data application on the NUCLEO-U575ZI-Q development board. I have tried to adapt the ADF_AudioRecorder application designed for the STM32U575I-EV and found at https://github.com/STMicroelectronics/STM32CubeU5/tree/5107fbd316d605704bb4c3ebf2126d4d1ba0e763/Projects/STM32U575I-EV/Examples/MDF/ADF_AudioRecorder I can generate the ADF CCK0 clock output on PE09 (confirmed 1.01 MHz with my oscilloscope) and when connected to my PDM microphone, see the PDM output on its DATA line, also using my oscilloscope, and connect this to PE10. Because I have no SAI and no audio CODEC attached, I just want to save the PCM formatted samples to memory at the moment, with a view to exporting over the VCOM port for verification in future. However, I'm stuck at the point of creating the samples. From the .ioc file attached, you should be able to see my configuration is, aside from the SAI, very similar to the example for the other U5 dev boar

Is it possible to re-trigger HAL_TIM_DMABurst_MultiWriteStart() from software? Currently it works only once (the first time) for me. Using TIM1 freq/duty-cycle:HAL_TIM_DMABurst_MultiWriteStart( &htim1, TIM_DMABASE_ARR, // Base = ARR TIM_DMA_UPDATE, // Trigger = update event (uint32_t*)rampBurst, // Source buffer TIM_DMABURSTLENGTH_3TRANSFERS,// ARR + RCR + CCR1 N_STEPS*3 // Number of bursts ); __HAL_TIM_ENABLE_DMA(&htim1, TIM_DMA_UPDATE);This produces a duty-cycle and frequency change over a certain amount of time, let's say 10ms, after the 10ms, I would like to disable the PWM output by setting the duty-cycle to 0:__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 0);Then, I would like to re-trigger this each 100ms from software. My DMA setting is set to "Normal". The value of RCR is always 0 in the rampBurst array.

Hi,I'm working on a new design using a STM32H523VET6 in which we want to use USB host & device functionality. Whether the board should function as a host or device is determined when it is switched on and will not be changed during operation.As far as I understand I don't need an external crystal for both modes host & device? But what I don't understand is  how to configure the clock recovery system CRS. Do I need the SOF signal, but this seems only available when in device mode.So my questions are:1. Is it true that I don't need external crystal for USB host & device modes?2. What is needed from clock recovery system SRS (SOF signal...)?Thanks,Roger

Code Order :1、HAL_FMAC_FilterPreload_DMA。2、HAL_FMAC_FilterStart。3、HAL_FMAC_FilterStop。4、HAL_FMAC_FilterStart。5  HAL_FMAC_AppendFilterData    i want ask ,does Fmac X and Y buff will clean when step3: HAL_FMAC_FilterStop function excute ?  

Hello STM community, I am working with the STM32N6570-DK Discovery kit and trying to build a pipeline for live camera streaming over Ethernet using NetX Duo, ThreadX and FileX. I am currently using the inbuilt CubeIDE example project Nx_WebServer. My current setup is: STM32N6570-DKAzure RTOS: ThreadX, NetX Duo, FileXEthernet RMII with static IPSD card for web contentHTTP server using NetX DuoGoal: later integrate CSI camera streaming over Ethernet What works: The board gets a static IP successfully.Ethernet link is up.Ping works from PC.SD card is mounted correctly and HTML files are accessible through FileX.HTTP server starts without error. Issue faced: I am unable to move forward toward live camera streaming.There is no reference or example for CSI camera streaming over Ethernet using NetX Duo on STM32N6570.I also faced multiple issues with thread creation order and NetX initialization, which took significant time to debug. My question: Is there any recommended architecture, applicat

I want to make a GUI with C# that I could choose the STM32 microcontroller and the xxx.elf file and programming it without using STM32CubeProgrammer with USB .With the STM32CubeProgrammer it is look like this: What to look for? where should I begin?I saw that there is an API for STM32CubeProgrammer on C++. is there an option to call C++ program to C#? 

Greetings,Kindly, I would like to know which USB interface I can use to transfer data between the STM32L552E-EV and the reComputer J4012.I am working with TEE, and my goal is to send plaintext from the reComputer to the STM32L5 so that it can be encrypted on the device. However, when I send data, I do not receive any response.I have tried using both the USB port and ST-Link, but the result is the same. I can see the ST-Link device on the reComputer, but when I use USB CDC, it is not recognized.Could you explain the proper USB connection and how to set up the communication? 

Hi, I want to set up the Ethernet peripheral of the STM32H743 microcontroller using lwIP, but I’m facing a problem and I can’t get a ping response. I have reviewed some codes, but they don’t fully explain the cause of the issue. Does anyone have experience with this problem and can provide the correct configuration/settings?

Hello,I'm looking for advice / help with Trust-Zone enabled project.  I'm just getting started with Trust-Zone so there is a bit of a learning curve I guess, and a lot I dont know.  I'm debugging in VSCode.  Debug config shown at bottom of message.  To start, I programmed TZEN for my STM32U575 to 1, but no read out protection is enabled.    The secure part of the project, which runs first (its ISR table is at 0xc000000 ) only does a handful of things currently, including running this - it is stock standard STM code I think.static void NonSecure_Init(void) { funcptr_NS NonSecure_ResetHandler; SCB_NS->VTOR = VTOR_TABLE_NS_START_ADDR; /* Set non-secure main stack (MSP_NS) */ __TZ_set_MSP_NS((*(uint32_t *)VTOR_TABLE_NS_START_ADDR)); /* Get non-secure reset handler */ NonSecure_ResetHandler = (funcptr_NS)(*((uint32_t *)((VTOR_TABLE_NS_START_ADDR) + 4U))); /* Start non-secure state software application */ NonSecure_ResetHandler(); } When I start