STM32 MCUs Embedded software

Hi there, I'm trying to make a basic USB audio speaker from an STM32H7 Nucleo board. I am fairly familiar with the USB audio middleware having studied it for a few days, but am not having much luck receiving audio data. I intend to use the built-in DAC as an output, but have gone back to basics to try and find the root of this problem. I start a new CubeMX project for the STM32H7 Nucleo144 board, add in the USB_FS and audio drivers on default settings. I then change the sample rate to 48KHz and generate the project. In order to get the device to enumerate I have to add HAL_PWREx_EnableUSBVoltageDetector(); to the MX_USB_DEVICE_Init();. Once I do this, the WIndows 10 machine will see the device and allow you to select it as an audio output. I can see the  AUDIO_Init_FS, AUDIO_DeInit_FS, and AUDIO_MuteCtl_FS, functions in the device struct are being called correctly, (when plugging in / unplugging and muting / unmuting) however AUD

Hello! I'm working on project requaring CAN node. I decided to quckly check if the periphery is configured correcltly. For this purpose I connected two pull-ups resistors to Rx and Tx pins and tried to see some bits on the oscilloscope.I configured GPIOs (as Alternate Function and Open Drain output), CAN and CAN's filters. Inside the "while(1)" cycle I tried to send some message. But there is no bits on th oscilloscope. Here is my code.I have 2 questions. Is it possible to test my software configuration the way I describe?Could you review the code and explain what is wrong with that, please?#include "stm32f0xx.h" #include "stm32f0xx_rcc.h" #include "stm32f0xx_gpio.h" #include "stm32f0xx_can.h" void CAN1_Init(void) { RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1,ENABLE);   CAN_OperatingModeRequest(CAN1,CAN_OperatingMode_Initialization);   CAN_InitTypeDef CAN; CAN.CAN_Prescaler=100; CAN.CAN_Mode=CAN_Mode_Norma

Hello everyone, I have been learning to work with USB connection in STM32 and while my research I've noticed that some schematics have D+ line pulled up to +5V, when in stm32 dev board schematics and in AN4879 it's pulled up to 3.3V and that's what I did when designing my own board (below schematics from AN4879 and Dicovery VL dev board, I did the same thing). But it didn't work, then I resoldered the D+ line and pulled it up to 5V. After that USB started working and I can write to VCP now. Please could someone clarify this issue and tell me what I've missed? EDIT: forgot to attach pictures

Good morning,I am trying to develop a touch screen screen controled by a STM32F1 and connected to a PC throught USB port.My doubts are related with the USB comunicationI've found many examples for USB comunication as Virtual COM or as a Mouse/Joystic which works fine. But The problem is that a touch works in a diferent way of a mouse, I mean a mouse send frames with relative movement but a touch is absolute positions.Anyone can give an example of a touch profile (HID) connected tot a PC?

Hi there,I have an old joystick which i want to convert to a custom hid device, the stick has three shiftin registers (cd4201) which i am reading using spi1. I know these shift register are being read cause i am sending it to serialport3 (just for debugging)and read values in docklight.I have set up mu nucleo F413ZH as a custom hid device and my computer is detecting it as hid game device. I have generated my own report descriptor and is 65 byte long. Following some tutorials spread over the net i cant get it to work.By not work i think my data is not being send by using the USBD_CUSTOM_HID_SendReport.I have set my EPIN and EPOUT to 64 bytes as recommended in various topics. But nothing is happening . But when i set my EPIN to 2 bytes and EPOUT 64 byte buttons in my device manger flashing randomly. And Axis values are all over the place.My code is not fully done jet, for now I just want to see if my buttons are working in my device ma

We have designed a custom bootloader solution that works on multiple STM32 devices, however when we attempted to use it on STM32L496VE we realised HAL_FLASHEx_Erase did not clear the flash, even though it returned HAL_OK.On further investigation, it was found that the HAL library assumes any stm32L4xx has 2 banks, with each bank having half the FLASH_SIZE. This meant that FLASH_SIZE is set to 512KB, and FLASH_BANK_SIZE is set to 256KB for STM32L496VE, whereas the datasheet states that this IC has 1 bank of 512KB.Note - we have modified the defines to ensure STM32L496VE has only 1 bank in the HAL Library, however HAL_FLASHEx_Erase still does not work. Potentially the assumption that the device has 2 banks causes a lot of ripples throughout all the other libraries for the same device.Is there any assistance you can provide with this please?Regards,Kaz

STM32F4-DISCOVERY board: I need to read from the mic (MP45DT02) and I was trying to use the STM32CubeIDE to generate the initialization and I cannot get to enable the pdm2pcm middleware. I have tried to configure I2S2 (no errors) but still pcm2pcm is grey and not available somehow. I have the latest firmwate. Any ideas?Thanks.

Dear ST community,I am running stm32f4-7 with FreeRTOS, and lwip, I am running TCP server by use of LWIP and some other application logic. I need to generate PPM signal (8 PWM pulses with different length) every 20ms. For this purpose I am using timer10, and on each interrupt I set one GPIO pin to 1 or 0. Each PWM pulse is from 0,5ms to 1,1ms, so the timming i gues is not that fast... I am running system clock of 168MHz.everything runs fine, just sometimes, PPM signal has some parts longer than it should be, most porbably timer interrupt is called with some delay. I suggest processor is bussy with some other task, thus cannot service interrupt for the timer. I have nested interrupts enabled with the priority for my timer = 0.

I'm using STM32F446, I found one issue. In STM32F4xx_hal_uart.c, it stated that.  ==============================================================================            ##### How to use this driver ##### ============================================================================== [..]  The UART HAL driver can be used as follows, pay attention to the last line about UART pins, it's stated that RX as alternate function input.   (#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).  (#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:    (##) Enable the USARTx interface clock.    (##) UART pins configuration:      (+++) Enable the clock for the UART GPIO

 I build the whole program by the IDE. Following is my code. I can read the CID of the card without select the fatfs middleware. The program report FR_DISK_ERR in f_open. The f_mount works fine.int main(void)   {   /* USER CODE BEGIN 1 */       /* USER CODE END 1 */       /* MCU Configuration--------------------------------------------------------*/       /* Reset of all peripherals, Initializes the Flash interface and the Systick. */   HAL_Init();       /* USER CODE BEGIN Init */       /* USER CODE END Init */       /* Configure the system clock */   SystemClock_Config();       /* USER CODE BEGIN SysInit */       /* USER CODE END SysInit */       /* Initialize all configured peripherals */   MX_GPIO_Init();   MX_DMA_Init();   MX_RTC_Init();   MX_USART1_UART_Init(); &n

Hello,I have my custom board and it has 3 different memory area (pyhsically) and they are, Internal 64K flash which has 2x32KB sectors, Parallel NOR Flash 64 MBit which has 128KB sector size, 128MBit QSPI Flash which has 64KB sector size.If i use only internal flash memory, i can easly write and run dfu software referencing st's example.But i want to write it for all 3 different memory.What i am looking for is that, when i open ST's DFU PC Software, i need to see all three different memory areas and can upload/download binary to them.In this document, it is mentioned but i dont understand how to do it. Can anyone guide me with this? What will be the "USBD_DFU_MED

Hi, I've found an issue in FLASH_WaitForLastOperation function in code generated for STM32G070. May be it is valid for whole family. It is connected with ECC mechanism.The isseu is that if CFGBSY of flash SR is set it is never cleard until reset. So if it is set no write to flash is possible.I found that CFGBSY is set when any write to flash is done. In my case when a write to an uninitialized pointer. Error bits are not set to flash SR register.Sulution is to do second write to flash. Then CFGBSY is cleared and error bits are set. Error bits is then cleared as usual.I added followed code to FLASH_WaitForLastOperation after check of BSY1 flag and function is able to recover flash now.  time_cnt = Timeout;  while((FLASH->SR & FLASH_SR_CFGBSY) != 0x00U)  {   if (time_cnt == 0)   {     return 0xFD; &n

How to connect UART for bootloader and upload new file to chip in Linux.If anyone knows please help me out.

I use CubeMX to configure my timer 2 to use Encoder Mode: "Encoder Mode TI1 and TI2". In my code should I use HAL_TIM_Encoder_Start(&htim2, TIM_CHANNEL_1)orHAL_TIM_Encoder_Start(&htim2, TIM_CHANNEL_2)orHAL_TIM_Encoder_Start(&htim2, TIM_CHANNEL_ALL)or something else?P.S. What means TI1?

I am trying to get the device working but I cant seem to get the basic working.Code :USB->GRSTCTL |= USB_OTG_GRSTCTL_CSRST; do {   if (++count > 200000U)   {     return TIMEOUT;   } } while ((USB->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST);Always times out. What could cause this?

Hi all,This post is obviously coming from a person without any USB development experience.We use some off-the-shelf instruments which I know to be based on STM32, and they connect to a PC using the Virtual COMPort. Nothing new here, the standard Windows drivers perfectly recognizes it and I can communicate using any console program.What we would like to do is to get rid of the PC: make an external "controller" device with another STM32 with USB OTG to which the instrument would be connected (a small LCD and a few buttons will be the interface to whatever the instrument requires). Our controller would recognize the VCP, and "convert it back" to a serial transport layer.So I guess we are looking for the C/C++ "reverse" of the VCP driver.[STM32_INSTRUMENT]-------->(USB_CABLE)-------->[STM32_USB_OTG][SERIAL_DATA]Does anyone know if there is such a thing available?Thanks,Bruno

I have been using USB CDC for a while now with the following STM32 parts;- F417, F401, F070, F301 and F373. I use STM32CubeIDE and all my projects are built using the Device Configuration Tool. I have found that USB CDC works first time with F417, F401, and F070 parts, but does not work with F301 and F373 parts. By 'not work' I mean the project build and run okay, but I get no enumeration form my PC. I get zero response. I have spent along time checking signal levels and clocks, etc, but found nothing. So, I've had to give up with the F301 and F373 parts. Could this be an issue with the F3-- library?. I would be very interested if anyone else has experienced this.

I have experimented with the STM32L476RG-EVAL ADC_Oversample example and the ADC_Sequencer example. They both work fine for me. But when I try to combine the two, I cannot get it to work. I always timeout in the HAL_ADC_PollForEvent() function.Anyone have any ideas what is going wrong?

Error say: failed to start GDB server error

Dear,I have an issue about the embedded ST bootloader on the STM32F769. I'm not able to communicate with it.On a custom board, I use a STM32F769BG connected to the USART 1 (PA9 / PA10). When I send the 0x7F value, I don't have a response from the MCU. The startup step is follow :low state on the RST pin and BOOT 0 pin (MCU in reset state)high state on BOOT 0 pinwait 5 ms for pin state stabilizationhigh state on RST pinwait 5 ms for pin state stabilizationsending 0x7F valueI also try with the STM32F7 discovery (https://www.st.com/en/evaluation-tools/32f769idiscovery.html) but I have the same issue. On this board, I have unsolder the resistors between the MCU and the embedded ST-Link because it's the USART 1 which is used to do it.I'm sure that it's not my custom application which is launch when I release the RST pin, because I did a led blinker firmware and when I did the p

Hi,I'm using bno055 with stm32f402, and this IMU works in i2c, responding very slow to ackloledge/answer (few tenth of ms).I tryed to use it in blocking mode in freertos, but very quickly, I check more than 1ms of data... it's too slow, and freertos crashes.So I use i2c with interrupt and mutex. I manually failed, so I used stm32cubeMX and it still fails. Running with step by step debugger success much more, so I this this is a prioirity matter. I tryed with priorities from 0 to 15, (even if it should works from 5 to 15), it's quite the same.When I say Freertos fails, a hardfault happens from prvPortStartFirstTask. I'm calling BNO055_I2C_bus_write from a Task (and the only other task blink a led and move a servomotor with large delays, it works pretty well.Do you have some idea of how to solve this issue?This is my i2c thread safe code:s8 BNO055_I2C_bus_write(u8 dev_addr, u8 reg_addr, u8 *reg_data, u8 cnt) { s32

Does the ST plan to update the FatFs and FreeRTOS library in STMF7?

Hi, for my project I need to have two usb ports used in Device and Host mode..I thought I would use STM32F411 or 12 and HUB USB Microchip SQFN-24.It's possible to do this with HAL library?Thanks in advance for answer.

Hello,I have a use case to start user boot loader from 0x08020000 instead of 0x08000000 and 0th sector at 0x08000000 will be used to store read protected user data because of the sector size.As per guidance from @Community member​ , i have made changes in linker file and in systeminit function. the change details are given below.Linker changes which i made.define symbol __ICFEDIT_intvec_start__ = 0x08020000;define symbol __ICFEDIT_region_ROM_start__    = 0x08020000;define symbol __ICFEDIT_region_ROM_end__      = 0x0803FFFF;and in systeminit SCB->VTOR changed as below.SCB->VTOR = 0x08020000;after this change cstartup is calling main function in debug mode and works fine. But in normal operation after reset the program is not running. I think the jump to main function is not happening.I am stuck at this po

The demo software worked except for the image and video display. No suitable files. This demo was deleted and replaced by Tilen Majerle gitub usb dual host bin application using stm32cube programmer. Issue one, only some usb memory sticks work. All are 16GB or less, and fat or fat32. One memory stick writes a file and performs perfect. The others bring up an error when the mcu attemps to write text to a file on the stick. They mount and unmount according to the lcd touch display. Just will not write. Any ideas as to why some usb sticks work and others will not? The stick that works is the older. Issue 2, This app was deleted and the demo from STMs web page installed. It is their compiled hex file and cubeprogrammer was used to download to mcu. After a successful calibration of the lcd touch screen the 6 icons are displayed. However the touch function no longer works correctly. Touching one icon brings up another icons function. However no further touch features will work. You