STM32 MCUs Embedded software

Howdy;I have a li'l stm32u031, with a pushbutton attached to PA0. This MCU is clocked with no external oscillators. I've configured the button/pin to work with Timer2/Channel1 in Input Capture mode when the MCU is in run mode, to detect and measure button presses. This works swell. I'd like to be able to put this device into STOP2 mode, and be able to re-awaken it with the button. My understanding is that I'd do this by de-initing it as an alt function pin, and re-initing it for EXTI. At the moment, I'm doing this: // Stop all timer channels HAL_TIM_IC_Stop_IT(&htim2, TIM_CHANNEL_1); HAL_TIM_OC_Stop_IT(&htim2, TIM_CHANNEL_2); HAL_TIM_OC_Stop_IT(&htim2, TIM_CHANNEL_3); // Stop the timer itself HAL_TIM_Base_Stop(&htim2); // Mask any stray interrupts and clear latched flags __HAL_TIM_DISABLE_IT(&htim2, TIM_IT_UPDATE | TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4); __HAL_TIM_CLEAR_FLAG(&htim2, TIM_FLAG_UPDATE | TIM_FLAG_CC1 | TIM_FLAG_C

Hello,I'm just a begginer with embedded and STM32 so bare with me please.I was trying to follow a program tutorial to periodically blink an LED using a timer channel in PWM generation mode. I have an STM32 Nucleo h755zi-q board, I set the integrated LED on pin PB0 to it's alternate function which is timer 3 channel 3, I assigned timer 3 to core C7 turned on internal clock as source and set channel 3 to PWM generation. I used different setups but for example 200 Mhz on the clock, prescaler 19999, autoreload 9999, pulse 5000. I left everything else as default and generated the code and only added this line"HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);"right before the infinite loop in the main function. This should make the user LED on pin PB0 blink periodically with 1 Hz frequency I think. But the LED isn't doing anything at all.I'm using CubeIDE obviously and using just a basic timer with interrupt works flawlessly, so where is the mistake?Sorry for low details, I'm currently in a rush

I'm developing camera-related things on the N6, and while perusing the JPEG encoder, I noticed that the datsheet and registers for it seem to indicate it can convert raw RGB (565? 888?) to JPEG. This is alongside Grayscale, YUV, and CMYK. However, in the HAL driver, there only seem to be defines and code around the last three. There are defines and support for Greyscale, YCbCr (which I assume to be YUV from the datasheet? But that is also confusing), and for CMYK. But there is little to no reference at all of the RGB options in the JPEG encoder. Is this functionality not supported? Am I missing something? Is it a bug in the firmware?  While I'm on the subject, am I able to pump the YUV420 planar from the DCMIPP into the JPEG Encoder? The datasheet suggests I can but all examples and information I canf ind online suggests I need to convert it to YCbCr first, but I thought they were the same? Thanks for Support

Want to incorporate LwIP_UDP_Echo_Server example code for NUCELO-H723ZG with another project which has ADC, DMA, and timer system setup for sampling data. Issue is there is no .ioc file for the example code and when trying to look into the code manually for the parameters to feed into cubeMX when trying to configure a new project, there was some values that were missing, and some that were showing up as invalid (even though when testing the example code it was working fine). A bit lost and have been spending a lot of time trying to identify how to go about this. Any help on this would be appreciated.

Hi,I have a lwIP implementation running on an STM32H723 using a CubeMX HAL implementation, so no OS-like stuff involved. In case of heavy outgoing traffic, it seems it is running low on memory at some point. This is not dramatic as tcp_write() knows an error-code ERR_MEM which would give the possibility to deal with that situation.Unfortunately it seems this error code is not used here. Instead of that, the system dies and ends up in HardFault_Handler() via following stacktrace:HardFault_Handler() at stm32h7xx_it.c:85 0x8002f04 <signal handler called>() at 0xffffffe9 mem_malloc() at mem.c:934 0x800d7fe pbuf_alloc() at pbuf.c:284 0x800e348 tcp_pbuf_prealloc() at tcp_out.c:263 0x801299a tcp_write() at tcp_out.c:610 0x8012e48 So...how can I change that? What do I have to do to let tcp_write() return with a proper error code instead of letting the whole system crash?Thanks! 

I am using the Nucleo STM32U385rq development boards to create an I3C controller and a I3C target.I have the following scenario working:1) Controller assigns dynamic addresses.2) Target sends an in-band interrupt.3) Controller acknowledges the in-band interrupt.4) Target calls HAL_I3C_Tgt_Receive_IT with a size of 16 bytes.5) Controller calls HAL_I3C_Ctrl_Transmit_IT with a size of 16 bytes.6) After the controller received notification of the transmit completion, it starts a timer to do a read after a delay.6) Target receives the data and calls HAL_I3C_Tgt_Transmit_IT with a size of 16 bytes.7)  Controller timer times out and calls HAL_I3C_Ctrl_Receive_IT with a size of 16 bytes.8) Target sends the data to the controller.There are a few issues with this sequence: a) There doesn't seem to be a way for the Target to be setup to handle a read or write at any time.  The Target has to explicitly setup for one or the other and there are times where neither is se

Hello, I am working on a low-power STM32 system. In my original configuration I was running the core at 32 MHz (PLL from HSI16) with Voltage Scaling 1, and in this setup USB CDC worked without any issues. To reduce power consumption, I reconfigured the system to run the core at 16 MHz HSI (no PLL) while keeping Voltage Scaling 1. The USB clock source is HSI48. With this configuration, when connecting to a USB 3.0 host port, the device often crashes during enumeration. Sometimes it enumerates fine, but most of the time it fails. Interestingly, if I connect the device through a USB 2.0 hub, the problem does not appear. From my research, I found that:   - USB 2.0 controllers are more tolerant and usually accept HSI48’s +/-1–2% drift.   - USB 3.0 controllers are stricter, and if HSI48 drift exceeds +/-0.25%, CRC errors occur. This causes descriptors to get corrupted and Windows shows a crash or device not recognized. My question:What are the recommended ways to avoid this issue w

以上就是我配置的所有内容。您能指出我的配置有任何问题吗？ edit (translated in English):  Hello, I have configured the STM32C071KBT6 for USBX standalone mode. Attached are all the screenshots of my configuration. Could you please review and let me know if there are any issues with my configuration? Thank you.

Hello everyone,This is my first post here, so if there's anything wrong with the way I've formatted or presented it, please feel free to let me know.My current task involves switching from USB HOST to USB CDC. I used CubeMX to generate the necessary USB CDC-related files and integrated them into my original program.On my PC, the program works as expected and is recognized correctly as a COM port.However, on my coworkers' PCs, the device is not recognized as a COM port.Both our PC are win11, and after checking, win11 seems no longer requires the installation of the STM Virtual COM Port driver.Is there anything we can do to further clarify or resolve this issue?

Hello,I am working on an STM32F746 project where I have implemented a bootloader.The setup is as follows:Application image is stored in external QSPI flash.Bootloader copies the image from QSPI to SDRAM (IS42S32400F at 0xC0000000).After copying, I set SCB->VTOR = 0xC0000000 and jump to the application Reset_Handler.The copy is verified: I have cross-checked the SDRAM contents with the QSPI image, and the data is copied correctly.I also created a test application that only sets a GPIO pin high (no SystemInit(), no HAL_Init(), no HAL_RCC_DeInit()).Even in this simple case, after the bootloader jumps to the reset handler, I get this error: Break at address "0x242" with no debug information available, or outside of program code.The Reset_Handler address from the SDRAM vector table is correct (e.g., 0xC00002B5), and VTOR is updated to 0xC0000000.But execution always ends up breaking at 0x242.Has anyone faced this issue when trying to execute code from SDRAM after copying from QSPI?A

Hi,I need to enable wolfSSL to TCP/IP client and server program with LWIP stack without freeRTOS. How it can be done?. Need sample example for the same board.I'm attaching my code for which i need to enable wolfSSL.Thanks in advance.Thanks and Regards,Harshitha R

Hi, I'd like to have some feedback about the use of XCUBE-EEPROM library on STM32H563.Is it functionnal and reliable ? After digging into the code, i have few questions:   MPU_init() In the MPU_init() function there's a configuration  with no explanation ? /********************************************************************************/ ** Initializes and configures the Region and the memory to be protected */ MPU_InitStruct.Number = MPU_REGION_NUMBER1; MPU_InitStruct.BaseAddress = 0x08FFF800; MPU_InitStruct.LimitAddress = 0x08FFF80F; MPU_InitStruct.AccessPermission = MPU_REGION_ALL_RO; HAL_MPU_ConfigRegion(&MPU_InitStruct); /********************************************************************************/   num_of_edata_page With the default settings, in the OB_init() function according to me there's a problem with the computation of num_of_edata_page. Indeed in the code below, after each reset the HAL_FLASHEx_OBProgram() is always called.   /*

There's a serious bug in G4's hal(version 1.6.1) library in spi dma function.The problem is:1, user calls HAL_SPI_TransmitReceive_DMA2, after spi transmission finished, HAL will call HAL_SPI_TxRxCpltCallback3, user calls HAL_SPI_Receive_DMA inside HAL_SPI_TxRxCpltCallback, and will fail in a chance.The reason is:1, HAL_SPI_TransmitReceive_DMA will start both Rx and Tx dma, and after transmission complete, HAL_DMA_IRQHandler will be triggered to set dma handler's state to ready and unlock dma handler;2, If Rx dma complete first and trigger HAL_SPI_TxRxCpltCallback, user calls HAL_SPI_Receive_DMA in the callback, don't know why HAL will still start Tx dma which is still locked, that cause function to fail.3, if Tx dma complete first, the scenario above will be fine. Unfortunately, these 2 simultaneously started dma(Rx & Tx) seem to complete in a random sequence (most of time Tx dma complete first) in my observation, in a rare case Rx dma will complete fi

Hello,I am planning to build a cellular application using EC200 as my modem. I prefer to use in modem stack using AT commands due to memory constraint of my MCU. I have come across X Cube Cellular where it is mentioned this setting can be changed using compilation flag as per the release notes. Kindly guide me to achieve this. Thank you. Regards.

Hi, It works, apparently a different microSd card works. however, it is strange that, DATALOG2 could write into the card. May i know how shall i perform sd card format function or what to fill up in the function?   Follow-up of the the topic below: Solved: Re: Standalone FileX SDIO SD Card Initializing err... - STMicroelectronics Community  

There is no test.txt file in my USB drive after the example is run.The board sends this log**** USB OTG HS Dual_Class Host **** USB Host library started. Starting Application Connect your HID or MSC Device USB Device Enumeration FailureTried to attach the USB drive to both USB connectors.The last message is sent about 1.5s after the previous ones.Where can be an issue?

Hello, I'm currently testing a bootloader-XIP application architecture on a NUCLEO-H7S3L8 board. The MRAM (XSPI2) test works perfectly in the bootloader, but when I move the same code to the XIP application, the system hangs during XSPI2 initialization. I would appreciate any advice on this issue. System Environment MCU: STM32H7S3L8 Board: NUCLEO-H7S3L8 IDE: STM32CubeIDE v1.19.0 Firmware: STM32Cube_FW_H7RS_V1.2.0 Project Goal and Progress I have successfully completed all communication mode tests for the MRAM (XSPI2) in the bootloader (exercise_Boot). The bootloader runs from internal flash, and through mram_spi_test.c, it has fully tested the MRAM connected to XSPI2 in all SDR/DDR and SPI/DSPI/QSPI modes, confirming perfect operation. I have migrated the verified test code to the XIP application (exercise_Appli). The bootloader loads the application to the external NOR flash (connected to XSPI1) and jumps to it in XIP mode. I have successfully confirmed that the

Hi,Can someone help me how to use MbedTLS to my TCP Client Example. I haven't worked before . please tell me step by step. How can I proceed.I'm attaching the source code for the reference. Thanks,Harshitha R

Hi everyone,I am trying to generate sinewave using PWM mode of microcontroller.I am using Discovery Board having STM32F407 microcontroller. System clock and Timer clock are of 8MhzI am using two timers Timer1 for High Frequency switching (500Hz) and Timer2 for Low Frequency switching (50Hz).waveforms I am getting are OK but there is one issue, after every 7 cycles I am getting an extra PWM sample in my output.I don't know why it is so. I am attaching image of the output and code. may be there is a minor mistake which I am doing but not sure. can you guys let me know if there is an issue uint16_t sineTable[SINE_TABLE_SIZE] = {400,635,780,780,635,400,165,20,20,165}; // Initializing Timer1 void MX_TIM1_Init(void) { TIM_ClockConfigTypeDef sClockSourceConfig = {0}; TIM_OC_InitTypeDef sConfigOC = {0}; TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0}; htim1.Instance = TIM1; htim1.Init.Prescaler = PRESCALER_REQUIRED; htim1.Init.CounterMode = TIM_COUNTERMODE_UP; htim

The Cube-AZRTOS bundles cmsis_os2.c implementation has potential NULL pointer dereferences.  There are many lines of the form:if (( attr->cm_mem == NULL) || (attr == NULL))in code that attempts to recover and de-allocate memory from a "create" call that failed.  The order of comparisons should be reversed:if ((attr == NULL) || (attr->cb_mem == NULL))This happens for different structure members, not just the cb_mem.I've checked the F4 version 1.1 ZIP file and github repo, as well as the github H7 repo and they both have this issue.  I suspect all versions do.

Hi, I using STM32H745I-Disco board and trying to do intercomunication using OpenAMP. But my generated code is compile sucessfully but it not working in coreM4 it stucking in the below function /* create a endpoint for rmpsg communication */ int32_t status = OPENAMP_create_endpoint(&rp_endpoint, RPMSG_CORE_M4_NAME, RPMSG_ADDR_ANY, rpmsg_recv_callback, NULL); if (status < 0) { Error_Handler(); } I have tried the example code Openamp_ping_pong example for STM32745I-Disco board, which is Working fine. But my generated code is not working. I have go through the already mention same issues in ST forum which link given belowhttps://community.st.com/t5/stm32cubemx-mcus/openamp-issue-on-stm32h745/m-p/794133?search-action-id=67994286745&search-result-uid=794133   and I have go through the OpenAMP document also which link mention below   https://www.st.com/resource/en/application_note/an5617-stm32h745755-and-stm32h747757-lines-interprocessor-communications-stmicroelect

Hi,We are currently using STM32H7S7 MCU with display and similar USB C circuit from the developer board.I wanted to connect a Web camera and to be able to display video from the screen.I wanted some help and guidance on where to find the driver?does ST have any driver I can use for getting the USB web camera data. Thanks

Hello @D.Botelho @mƎALLEm  I had an issue of ThreadX and FDCAN transmit as below. I use the stm32g474 and config a threadx and fdcan with stm32cubemx, so far it works well. but when i add some fdcan transmit code, it comes strangely. the code as below void appThread2(ULONG thread_input) { while(1) { if(fdcan1_RXFlag == 1) { fdcan1_RXFlag = 0; // Clear the receive flag for(int i = 0; i < 8; i++) { fdcan1TxData[i] = fdcan1RxData[i]+1; // Copy received data to transmit buffer } my_FDCAN1_Transmit(fdcan1TxData); // Echo back the received data printf("FDCAN1 Received data: "); for (int i = 0; i < 8; i++) { printf("%02X ", fdcan1RxData[i]); } printf("\r\n"); } // // 发送 0x12 fdcan1TxHeader.Identifier=0x012; fdcan1TxData[0] = (dis_sensor_data1.dis1 >> 0) & 0xff; fdcan1TxData[1] = (dis_sensor_data1.dis1 >> 8) & 0xff; fdcan1TxData[2] = (dis_sensor_data1.dis2 >> 0) & 0xff; fdcan1TxData[3] = (dis_sensor_data1.dis2 >>

Hello everyone,I am working on a custom board with STM32H723VGT6 and LAN8742A but after much troubleshooting, pinging has remained unsuccessful. I am trying to use LwIP without RTOS. I have a NUCLEO-H723ZG that I have been able to successfully ping without RTOS, but when I use the same CubeMX configurations (except the RMII pinout) on my custom board, it does not work. I tried to very closely follow the Ethernet schematic for the NUCLEO-H723ZG, the only main changes I made were the pinout (since I am using VG instead of ZG) and using two ESD protection diodes instead of one for ease of routing. The RMII pinout follows what is presented in CubeMX. Here are the following code modifications I have made, based on the H723ZG example in this repo https://github.com/stm32-hotspot/STM32H7-LwIP-Examples.git:Added to STM32H723VGTX_FLASH.ld: .lwip_sec (NOLOAD) : { . = ABSOLUTE(0x30000000); *(.RxDecripSection) . = ABSOLUTE(0x30000100); *(.TxDecripSection) } >RAM_D2 /*

 Hello,On the STM32N6, I am using DCMIPP_PIXEL_PACKER_FORMAT_YUV422_1.I am seeing the correct coloring when using CMW_MIRRORFLIP_NONE and the incorrect coloring when setting CMW_MIRRORFLIP_FLIP. Any help getting the correct DCMIPP_ColorConversionConfTypeDef color_conf for the CMW_MIRRORFLIP_FLIP ? ... if (HAL_DCMIPP_PIPE_EnableRedBlueSwap(&hcamera_dcmipp, DCMIPP_PIPE1) != HAL_OK) { Error_Handler(); } #define N10(val) (((val) ^ 0x7FF) + 1) DCMIPP_ColorConversionConfTypeDef color_conf = { .ClampOutputSamples = ENABLE, .OutputSamplesType = DCMIPP_CLAMP_YUV, .RR = N10(26), .RG = N10(87), .RB = 112, .RA = 128, .GR = 47, .GG = 157, .GB = 16, .GA = 16, .BR = 112, .BG = N10(102), .BB = N10(10), .BA = 128, }; if (HAL_DCMIPP_PIPE_SetYUVConversionConfig(&hcamera_dcmipp, DCMIPP_PIPE1, &color_conf) != HAL_OK) { Error_Handler(); } if (HAL_DCMIPP_PIPE_EnableYUVConversion(&hcamera_dcmipp, DCMIPP_PIPE1) != HAL_OK) { Error_H