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STM32H750 USB fail, fail rate 1/300

The STM32H750 USB function was okay when it left the factory because FW update had been test in the factory. Total is 300 pcs. Recently we fond 1 pcs is abnormal. It shows the following information when pluggin in the USB. Is it hardware issue? Coul...

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JLee.32 by • Associate III
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  • 1 replies
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USB communication only via control transaction (EP0)

I need to write an application which should communicate only via endpoint 0, i.e. using only control transactions. My question is whether this is possible with STM32 family (regardless of the series (F0, F1, ...)). I think that it should be possible ...

dr.look by • Associate II
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  • 8 replies
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Hello, I am making a keyboard to use it myself with stm32f103 and when I follow the steps below, I cannot read the capslock and numlock leds from the computer. How can I get the status of these leds? thanks

Update the usbd_hid.c...static uint8_t USBD_HID_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum);...USBD_ClassTypeDef USBD_HID = {USBD_HID_Init,USBD_HID_DeInit,USBD_HID_Setup,NULL, /*EP0_TxSent*/ NULL, /*EP0_RxReady*/USBD_HID_DataIn, /*DataIn*/USBD_H...

AYılm.1 by • Associate II
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  • 0 replies
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STM32H7 and SDMMC/FatFs

Hello Everyone,I have an STM32H7 interfacing with an SD card Using FatFs. I am using the cube ide, latest drivers etc. (embedded packages version 1.9.0) (FatFs Middlewhere version: R0.12c)I am facing an issue where sometimes (50% of the time?) The Ca...

TCash.1 by • Associate III
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  • 4 replies
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Problem with our proprietary bootloader. Interface interrupts may come too quickly while flash pages are being deleted and written.

Hi everyone, I have a problem with our proprietary bootloader on STM32L151, STM32L451 and STM32F303 micros.I transfer the content of a flash page via any interrupt-controlled interface (CAN, UART, USB etc.). If all the data for a flash page is availa...

Carsten1 by • Associate II
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  • 7 replies
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Resolved! ST32H7 SPI DMA Callback not called in non-circular Mode

Hi,I have seen this some time ago in another thread: https://community.st.com/s/question/0D53W000005771OSAQ/stm32h7xx-spi-tx-with-dma-halspitxcpltcallback-is-called-only-if-dma-is-configured-in-circular-modeI am kind of repeating the questions in tha...

JRS by • Associate III
  • 2027 Views
  • 2 replies
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Resolved! Problems with FatFS and FreeRTOS integration

Hi, everyone.I have a board with STM32F215 uC and I want to create a Data Logger on FreeRTOS.I've been reading about these problems and I don't find what's going on.I modified the task's stack on the FR configuration, I made sure that timebase source...

by • Not applicable
  • 908 Views
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Resolved! Bug in uart init function when setting baudrate register (BRR). In file /Drivers/STM32G4xx_HAL_Driver/Src/stm32g4xx_hal_uart.c at line 3201, it calculates usartdiv casting it to uint16_t and then checks if it is less than 0xffff.

In this way, error never occurs leading to wrong baudrates. if (pclk != 0U) { /* USARTDIV must be greater than or equal to 0d16 */ usartdiv = (uint16_t)(UART_DIV_SAMPLING16(pclk, huart->Init.BaudRate, huart->Init.ClockPrescaler)); ...

Lmoio.1 by • Senior
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  • 6 replies
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