STM32 MCUs Embedded software

Trying to figure out how to launch the STM32F100 UART bootloader from within an application and have been having zero success after careful review AN2606 Rev 46 “STM32 microcontroller system memory boot mode�? and AN3155 Rev 13 “USART protocol used in the STM32 bootloader�?. For many years have had good success programming STM32F030, STM32F100, STM32F303, and STM32F405 slaves using the UART bootloader, but those all were done by having a master STM32 drive the BOOT0 and RESET lines of the slave in the correct pattern to cause it to enter bootloader mode.I send 0x79 at a valid baud rate data/parity/stop set to 8E1, but I never get an ACK [0x79] or any other pattern of bits from the STM32. (The normal application transfers data faithfully over this interface to USART1, so hardware connectivity is known to be good.)

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Posted on November 23, 2017 at 13:09Hi everyone,I'm developing an HID Host application to comunicate with a own device and I'm using the NUCLEO-F446ZE board.At the start I tried to use the HID_Standalone application in the STM32CubeF4 firmware package and then, I tried to develop a new application with STMCube configurator.In both case I tried to connect (with OTG connector) 3 different type of mouse and 1 keyboard and no all device are able to comunicate with microcontroller: with Typhoon mouse 40260 the USBH_Process state machine in the usbh_core.c file of the Middlewares, blocks in the HOST_ENUMERATION state (line 462) because the USBH_HandleEnum(phost) function try to get device descriptior (line 646 same file) but the USBH_HandleControl() function read all times USBH_URB_NOTREADY state (line 600 of usbh_ctlreq.c) until HAL_HCD_Disconnect_Callback() called by interrupt.with Trust mouse 16144 is the same with Typhoon mouse with difference that the HAL_HCD_Disconnect_Callback() isn'

Hi there,I am trying to make my STM32L562 Discovery Kit an USB device to read and write files in a SD card as a mass storage device.Can anyone tell me if it is effectively possible with this board? If yes, how can I do it?I have tried different settings in CubeMX (USB device as Mass Storage Class, activate or not USB FS global interrupt, using or not FATFS...) but I still can't detect the SD Card from a PC.Thanks in advance for your help!

Hello everyone,I would like to ask for some guidance on which Interrupt i should use for FreeRTOS message queue to help synchronize my state machine. I am using UART to transmit data to device, and i would like to know if i have finished transmitting. Should I use DMA Transfer Complete or UART Transfer Complete?Thanks!

On first debug session everything works fine. However on second and beyond session dma stop working.Hardware: custom stm32l4p5cet based board, original ft232 uart bridge, stlink v2.CubeMX settings: UART with DMA on RX and TX (RX in circular mode), Global interrupt enabled with priority 5.Code:Start DMA returning HAL_OK:HAL_UART_Receive_DMA(&huart2, serial_data, 128);Task to put data from uart in to message queue:static uint16_t tail;   void serial_input_task(void *arg) { for (;;) { uint16_t len = 128 - huart2.hdmarx->Instance->CNDTR; while (len - tail) { uint8_t tmp = serial_data[tail]; osMessageQueuePut(at_input_queue, (const void*) &tmp, 0, 0); tail++; if (tail >= 128) tail = 0; } osDelay(1); } }task to read message queue and process data:static uint8_t at_serial_input[128];   void input_task(void *arg) { uint32_t count; while (1) { count = osMessageQueueGetCount(input_queue); for (uint32_t i = 0; i < count; i++) osMess

Are there any instructions/app notes discussing the steps required for a SPI transfer using DMA and the LL libraries? I found some samples online for UART and tried adapting them for SPI but am so far unsuccessful. I'm still debugging but in the meantime, I thought I'd ask the question.

hello, i´m using stm32f103c8t6 and cubeIDE to write a simple blink code. The program get stuck in the HAL_Delay call. I noticed that the program blocks in the second call of HAL_GetTick(void). I tried adding this to stm32f1xx_it.c as suggested in other post in this forum:void SysTick_Handler(void) {   /* USER CODE BEGIN SysTick_IRQn 0 */   /* USER CODE END SysTick_IRQn 0 */   HAL_IncTick();   HAL_SYSTICK_IRQHandler();   /* USER CODE BEGIN SysTick_IRQn 1 */     /* USER CODE END SysTick_IRQn 1 */ }but without results, any ideas to get this function to work proprerly?

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So I bought STM32F769 Discovery Board for prototyping. In BoardOverview doc states the demonstration source code could be found in www.st.com/stm32f7-discoveryBut I could not find it there, it only provide the compiled binary which is not much of a help. I would like to use the source code as reference.

Im using stm32f429 controller,now in our project i want to play audio in wav format.now sd card read function working fine,data transfer from uc to DAC using i2c DMA mode.but now only noice is play.what to do now ?any suggestion ?

I create 2 simple applications on Nucleo-L476RG.Both application have default settings from STM32CUBEIDE.1 - bootloader - just jump to 0x080100002 - Application - led flashings with HAL_Delay functionBootloader jumps into application, pplication starts - then stuck into HAL_Delay.See the modification to both app:'Bootloader':/* USER CODE BEGIN 0 */typedef void (*pFunction)(void); /*!< Function pointer definition */#define APP_ADDRESS (uint32_t)0x08010000void jump2APP(){ uint32_t JumpAddress = *(__IO uint32_t*)(APP_ADDRESS + 4); pFunction Jump  = (pFunction)JumpAddress; HAL_RCC_DeInit(); HAL_DeInit(); __disable_irq(); SysTick->CTRL = 0; SysTick->LOAD = 0; SysTick->VAL = 0; SCB->VTOR = APP_ADDRESS; __set_MSP(*(__IO uint32_t*)APP_ADDRESS); Jump();}/* USER CODE END 0 */[....] uint8_t i=20; HAL_GPIO_TogglePin(LD2_GPIO_Port,LD2_Pin); while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */  HAL_GPIO_TogglePin(LD2_GPIO_Port

I am trying to get the CAN Bus to work. I am using a NUCLEO-F446RE. It fails in the HAL_CAN_Init() routine. Which is code that is auto generated. Someone suggested maybe the board is bad. Fortunately I had a NUCLEO-F446ZE (144 pin package board) and it did not stop at that point with no hardware hooked up. I removed the hardware and the bare NUCLEO-F446RE still hung at the same place. I determined my NUCLEO-F446RE board must be bad. I ordered another NUCLEO-F446RE, and tested the bare board and it still hangs in the same place. Is this a known issue? Do I need to switch over to the NUCLEO-F446ZE if I want to use CAN?

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Hi,Ihave downloaded an example (Tx_CMSIS_Wrapper) project for stm32h747 discoverykit from STM32CubeMX. After downloading the example project, I was able tocompile it on STM32CubeIDE 1.6.0 and flash it in the board. I was able toprogram both the cores and run it individually. Afterthis, I wanted to add a SPI interface in the same example project. For this, Iuncommented #define HAL_SPI_MODULE_ENABLED in stm32h7xx_hal_conf.h in both ofthe cores and after that I called the MX_SPI1_Init function main.c file. Whilecalling the initialisation function in main.c file, it was able to locatestm32h7xx_hal_spi.h file but it could not find stm32h7xx_hal_spi.c file. Itwas showing the error undefinedreference to `HAL_SPI_Init' while building. Ichecked the folder structure of STM32H7xx_HAL_Driver folder and the file stm32h7xx_hal_spi.c is available in the folderstructure. The folder structure is already included in the path and USE_HAL_DRIVER is also available in the setting. So, I don'tknow where the

Hello there,I've setup a composite device (HID + CDC) on STM32F401RCT MCU. However, when sending data via CDC, the PC can only receive some HID packets (kind of lag issue) or no packet at all. I need to send data via HID and CDC concurrently. Is it possible? If not, do we have another solution? Thank you.

Hi,SETUPI am currently working on an STM32H743XIHx integrated in a custom board. I am using the FW package STM32Cube_FW_H7_V1.8.0 and STM32CubeIDE V1.5.1 with STM32CubeMX V6.1.1.Software side, I am using LwIP and FreeRTOS middlewares, with a static IPv4 adress (no DHCP). Hardware side, I am using a PHY integrated on my custom board, not the PHY embedded in the STM32H743 (LAN8742).In STM32CubeMX, I enable FreeRTOS and LwIP in RMII. The configuration is the default one for both, except:For LwIP, in the "General Settings" tab, I disable DHCP and configure a static IPv4 adress.For LwIP, in the "Platform Settings" tab, I disable the use of the PHY LAN8742 by selecting "Undefined" under the "Found Solutions" option (which generates a warning during code compilation). Again, this is because I am using my own PHY.And that's all. The code is then generated, and I do not modify the LwIP or FreeRTOS generated code. I can see that the function MX_LWP_Init() in the task StartDefaultTask() initializ

I m using LwIP+FreeRTOS (STM32Cube FW library for STM32f4xx 1.25.0).I use the Ethernet to send TCP and UDP packets. Everything works fine: I have HTTP working, I can join Multicast groups (IGMP), I can send UDP packets on regular addresses.But I can't send UDP packets on a multicast address. IGMP membership queries are fine but no UDP communication.I traced it back down to the DMA transfer where I wasn't able to find anything wrong but the packet is never sent according to Wireshark from another machine.Is there a specific setting to enable that or I am missing something ?NB : The code is based on the demo project from the library with the IGMP settings advised on this support forum.

Trying to port my code to CMSIS-RTOS v2 and running into some missing functionality. I don't see an osThreadSuspendAll() replacement.

Hey guys.Is it possible to do double matrix operation with cmsis dsp library?Or is there any other way to do so?

Hello,We run on platform STM32H743ZI and I made new UdpEchoClient application using source STM32H743ZI _EVAL\Applications\LwIP (in other word UdpEchoClient for Nucleo144) without RTOS!Unfortunately , it doesn't work ...Maybe you know about any working UdpEchoClient /Server without RTOS (location, download ?Other question, if Udp (not TCP/Web) example RTOS is available? PS: When I try to built trivial Ethernet sample using MX (STM32CubeIDE/MX) it says me that LwIP cannot be attached if RTOS is not enabled - ?Thanks Alexp

Hello,I'm trying to setup the system based on SMT32F407 with ThreadX, and enable the print float option for logging feature. Everything works fine!But when we started stability test, thousands of logs are composed with vsnprintf, but it finally fails in some call, like below shown:I tried to use "-mfloat-abi=soft" or "softtp" instead of "-mfloat-abi=hard", but no improvement at all. And I tried to find the answer from website, but no lucks for this issue.Could anyone give me the opinion to resolve this issue?

I'm thinking to design a Sensor-Cell to Mqtt cloud demo. But a few days ago I discovered ST FP-ATR-LTE1 package that also is using BG96 modem on the same Disco L496 board. This is the same board supported by X-CUBE-CELLULAR, and it provides an Asset Tracker demo with ST-DASHBOARD web. FP-ATR-LTE1 package has been updated recently on Feb.2021 period. But it seems to me based on older X-CUBE-CELLULAR 3.x package architecture.Is this true, any reason ? Does have X-CUBE-CELLULAR a roadmap for further releases?

Hi, colleagues! After power switch my 'F4 USB host can't renew early established USB connection with android accessory. Are there ways to somehow update the connection from the host side?

Hello.I want to use TouchGFX with AzureRTOS(Thread X).※board is STM32F769DISCO※TouchGFX Version is 4.16.0​I made stm32CubeIDE's project with TouchGFXDesigner.(selecting board→making Screen→Gnerate Code)​I opened this project with STM32CubeIDE.Next, I disabled FREERRTOS and set X-CUBE-TOUCHGFX.After that, I imported and refered some files related to ThreadX.Next, I added some code refering to azure rtos's page in touchgfx guide, and I write "hal.taskEntry();" in touchgfx_taskEntry() function.I tried to run this project. The result is as follows.But, when I enabled breakpoint in "OSWrappers::waitForVsinc()"in TouchGFXHAL::taskEnry() and debugged this project, I pushed resume button sometimes.This picure is my expected screen.I don't understand why this ​phenomenon occurs nor what I should do.Please tell me information.