STM32 MCUs Embedded software

Hi All,​I have ported mpu functionality by replacing port.c and portmacro.h.​In code, we are creating task which toggling led after every one second.​but this above code run only in debug mode only.​while i am running code in run mode, task is not creating. and led also not running.​So our observation is, in mpu functionality ported code does not creating task in run mode.​we are using following attached port.c and portmacro.h file reference.​so please help me to sort out this issue.​Controller : STM32L4A6ZGT6​​ThanksRahul 

So far I have been using VCP in my project for about six months with no problems. But today I found it was not able to send a specific 'packet' of bytes.Here is the SWV printf output from STM32CubeIDE:Sending 10 bytes 255 254 5 0 19 0 0 0 24 106Note the 19, which is the actual main content of the message. The first two bytes are a message header, last two bytes are a checksum.Now here's what I receive on the computer (Fedora Linux, libserialport)Read 9 bytes  255  254  5  0  0  0  0  24  106The 19 is missing. If I change it to 18 or 20 there is no problem, and I cannot find any other numbers which cause a problem, only 19. This is 1

Hi,I have created a CubeMx project for STM32F042K6. I am using following components:USBTSCIWDGGPIOTOUCHSENSINGUSB_DEVICEI just defined the pins and tried to compile but compiler says FLASH overflows around 2.5KI didn't even write one line of code. Then I realized USB HID library takes a lot of space (around 21K) on the FLASH. How can I reduce this size? Is there anyway to use it as Keyboard+Mouse without using entire library? Or is there any 'Lite' libray for USB HID?Thanks

I want to customize System memory UART Boot-loader and will use as Flash Memory Boot-loader. Please share the System memory Boot-loader Source code or the link where it is available.RegardsVijendra

I'm planning to use the built-in ROM bootloader in an STM32F4 chip for DFU uploads and having a hard time figuring out how it works exactly (in particular what pins it initializes at what moment in the boot process, and what I need to do externally to prevent it from going into e.g. SPI or UART mode). The documentation is missing some details (and experiments also give me puzzling results), so I'm looking for some more specific insight in the workings of this bootloader, which would be perfectly solved by looking at the source code.I've read some earlier related posts, and I suspect that the sources are not currently available, but maybe someone at ST will see this as a request to change that? I would think there will not be any secrets in their bootloader sources, but it would make the bootloaders (and thus their hardware platform) a lot more usable.Note that I realize that the ROM bootloader is not perfect and might not be a good basis for a custom boot

I have an issue with STM32L462 when using the ROM bootloader via UART to enable readout protection. It just hangs after enabling RDP level 1 and requires power cycling to recover. With several other STM32 MCUs (F0, F3, H7, ...) this seems to work.The ROM bootloader seems to be responding still after RDP enabled, but the code from flash cannot be executed. I've tried resetting with GPIO, but that doesn't help.

To save the least uA in one design I leave the VDDUSB unconnected until a powered USB is plugged in. When the 5V from USB is present a transistor enables the 3.3V to reach the VDDUSB pin.The code generated by CubeMX strightly calls MX_USB_DEVICE_Init() which never returns, if the USB is unplugged, because an error interrupt from the USB petipheral fires continuosly locking the CPU.As far as I understand there is no /* USER CODE */ hook to change this behavior.How can I manage this situation in a clean way to avoid to repeat changes at every code generation?Other than delaying the USB initialization until really powered, is there some hint or example to init and deinit the USB petipheral under software control, with the assumption that the USB peripheral could suddenly be powered off when the USB is unplugged.Any suggestion?Thanks.Mau.

Assembler messages: /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:879: Error: number of operands mismatch for `ds' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:868: Error: no such instruction: `isb 0xF' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:879: Error: number of operands mismatch for `ds' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:879: Error: number of operands mismatch for `ds' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:890: Error: no such instruction: `dmb 0xF' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:879: Error: number of operands mismatch for `ds' /Drivers/STM32F4xx_HAL_Driver/Inc/cmsis_gcc.h:868: Error: no such instruction: `isb 0xF'Hello, I am working on a STM32F412VG project using CMake -> Makefile. When compiling, these error are shown after 47% of compilation is done. It is very wierd to me since that file is a system file, not written by me. Do you have an idea how is this possible and how to fix this?

I am using STM32H750 with eMMC in MSD mode, with code generated by CubeMX Version: 6.1.0. USB works in HS mode with external phy USB3320.USB MSD correctly recognized by PC, but when i try to download file from it, transfer crashes in random time. If i increase MSC_MEDIA_PACKET size, data sends faster, but transfer becomes more unstable.I found place on which crashes transfer - this is function PCD_WriteEmptyTxFifo(), at random time when PCD_WriteEmptyTxFifo() start working, after call function USB_WritePacket() that writes data to USB FIFO, data stops readout from FIFO, FIFO becomes fullfilled and condition "(USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) >= len32b" is not satisfied. Transfer stops and USB is not working anymore. There is one weird thing: i tried to replace function that reads data from eMMC by memset(), and found that if the function sets working buffer by all zeros, USB stack w

The Problem is when I activate SDIO,Virtual Com Port does not work anymore. The device is not fount from PC. Any Ideas?

hi, recently, I am try to use cubeide to directly generate a basic project for future development. In this basic project, I am trying to integrate lwip stack I am now confused by one weird behavior, when I configure the memory for lwip internal heap usage as device type memory or strongly ordered type (TE: 00 , C: 0, B:0 or 1), then, when the program runs, hard fault will constantly occur. While if I configure the same memory as noncacheable (TE:01, C:0, B:0), then the lwip works fine, and I can get the right ping response. I want to know why the first configuration does not work. Can anyone shed me the light? Thanks a lot

is it possible to verify the FW version of MCU using stlink or some other stm tool ?i have programmed my MCU with FW version 5.5.5 and i would like to verify using JTAG or stlink or some other stm tool.someone told me it is factory protected you cannot verify ?can you people plz share some useful info ?ThanksAle

Build environments are pretty touchy with project tools that generate middleware code and changing tool versions. Given this environment , (1) what files should be under version control? (2) If the project has 30 user modified source files and 150 tool generated files, should all 180 files be under source control?Given the state of build tools I'm not entirely convinced that 6mo from now the 150 tool generated files could be duplicated if lost. (3) besides separately controlling user files should I check-in a zipped project folder?I'm looking for insight on what others are doing. In the past I generally put under source control only my user generated files.

I would like to implement a bootloader for STM32F103C8T6 that would count and keep in a special protected area how many uploads has done over its flash memory. Does anybody would give some some reference about this matter ? Thanks a lot. Antonio

I am trying to log the USB activity for my stm32 which is interfaced as a keyboard. I tried installing STM32 USB HID demonstrator but it is not supported for Window 10.I want to log the usb activity in a log file to analyse the data received on host side.

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Hi there!I want so offset the application in the flash at 0x08004000, so that I can use the first sector 0 for individual persistent data. I found out that I have to change the following lines:FLASH (rx)   : ORIGIN = 0x8004000, LENGTH = 496K (Linker Script)#define VECT_TAB_OFFSET 0x4000 (system file of stm32f446)So direct after flashing, the program is running (blinking led), but after power-cycling the stm, it does not start again. Could it be that the bootloader is still configured to start the application at 0x08000000? If this is the last problem I have here, how can I modify the address there?With help of the stm utility tool, I can open the option bytes but it seems that the BOOT_ADD0 option is locked ! (See picture in attachment)Is it this address ofset there which has also to be 0x4000?In the datasheet, I can also not see an option to set an address for the bootloader in the FLASH_OPTCR

Hello!I am using STM32F427VGT with USB3300 as USB high speed device mass storage class. I want to read data from SD card to a PC and I am only able to get transfer speed about 1 MB/s. What is the real maximum read speed that I can get with this hardware configuration?MCU provides USB3300 with 24 MHz clock and I am using BSP_SD_ReadBlocks_DMA() in STORAGE_Read_HS(). Transfer speed only slightly depends on SDIO clock divider - changing divider from 1 to 5 reduces the transfer by only about 20%. My code is generated with STM32CubeMX.Here is my STORAGE_Read_HS():int8_t STORAGE_Read_HS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) { /* USER CODE BEGIN 13 */ uint8_t readResult; uint32_t timeout = 100000;   readResult = BSP_SD_ReadBlocks_DMA((uint32_t *) buf, blk_addr, blk_len);   while (BSP_SD_GetCardState() != SD_TRANSFER_OK) { if (timeout-- == 0) { return USBD_FAIL; } }   if (readResult == MSD_OK) {

HiI am using a UCPD demo of STM32G4 B-G474 (USB-PD_Consumer_1port) but it does not allow me to select any of the Source PDOs. The sink can see the capabilities of the source but not select any. Can you help me with this? I am using STM32CubeIDE and STM32CubeMonitor

hi I am using STM32H750 MCU in my custom board. I want program by using IAP(in application program) . I wrote main boot code size of 19k and (flash size I took 32k from IROM1:0x08000000 - 0x8000) , I programmed to application address is 0x08008000 and bin code size is 12k and (flash size I took 32k from IROM1:0x08008000- 0x20000) vector address changed to 0x8000 in bin file programat the time of download the bin has not going to download , copying file has automatically skipped and main programmed also erased same time .I checked with 64k for IAP and 64 for application this also not working fine.Is IAP supports to STM32h750 ? what is the IAP and application memory size I need to taken ?help me in this regards.regardssrikanth

Hi ,I have Purchased STM32L475 Discovery Board and Ported the AWS FreeRTOS into that .I was Successfully Registered a Thing and created the Certificates and Downloaded the RootCA ,Client Certificate,Private Key and loaded in the STM32 and also i was successful in Sending the Data to AWS IoT core.My Question here is :1.How can we automate this Process of registering a thing and Downloading the Certificates without any Manual intervention ??as if the Product is in More quantity then it is hard to do manually.2.What will be the Expiry dates for the Certificates ??and how to update the certificates remotely ??

In polling mode, HAL_CAN_AddTxMessage() returns HAL_OK, but HAL_CAN_GetRxMessage() returns HAL_CAN_ERROR_PARAM. In interrupt mode, the function HAL_CAN_RxFifo0MsgPendingCallback() never has been called (CAN1_RX0_IRQHandler not been called). Also HAL_CAN_TxMailbox0CompleteCallback() not been called because HAL_CAN_IRQHandler() return HAL_CAN_ERROR_TX_TERR0;How can I Communicate between the boards? thanks

Hi there,Windows does not contain a default ECM driver like Linux does. I was wondering if there was any intention providing a Windows driver for the ECM middleware that is in the framework? We have to work with specific Android phones, which do not support RNDIS and only support ECM. We used to use RNDIS which worked just fine with both Windows and Linux but as soon as we discovered the phone didn't support it we were forced to move to ECM.Thanks!

Hi.I'm working on a STM32F4-Discovery board, and I'm having trouble linking the PDM2PCM Library into my project. I have run the example project located in the STM32F4-Discovery folder called "Audio_playback_and_record" and it works fine.I have copied the settings from this project into my new CUBE project, but when I run the compiler I get the following messagearm-none-eabi/bin/ld.exe: cannot find -l:libPDMFilter_CM4_GCC_wc32.a. below is an image of my settings, can anyone help me solve this issue?

I useSTM32F205CubeIDE 1.5.0MCU package for STM32F2 V1.9.2I tried to assign systic to timer 14I wanted to use timer8 for something else.I enabled "HAL_REGISTER_CALLBACK" for timers.When the system starts, during "HAL_Init()" timer14 is initialized as systic timer and immediately started with IRQ service. HAL_TIM_Base_Start_IT(&htim14);But TIM14 shares IRQ with Timer 8 and timer 8 is not initialized yet.So the IRQ handler is called, and it calls void TIM8_TRG_COM_TIM14_IRQHandler(void) { /* USER CODE BEGIN TIM8_TRG_COM_TIM14_IRQn 0 */   /* USER CODE END TIM8_TRG_COM_TIM14_IRQn 0 */ HAL_TIM_IRQHandler(&htim8); HAL_TIM_IRQHandler(&htim14); /* USER CODE BEGIN TIM8_TRG_COM_TIM14_IRQn 1 */   /* USER CODE END TIM8_TRG_COM_TIM14_IRQn 1 */ }But Timer 8 is not initialized yet.In HAL_TIM_IRQHandler for timer 8, callback functions are called, whic