Forum Posts
HAL_I2C_Slave_Receive_DMA
When I use the I2C DMA receive mode, how could I know the data has been received? I found if I use the delay to check the data, it seems it could work, but actually, we don't know when the data will be coming. so there should have a mechanism to tell...
Ethernet frame sent twice when using stm32f7xx_hal_eth driver.
Hello,So I've been trying to send a raw ethernet frame using only stm32f7 hal ethernet driver without LWIP. The frame is sent, however it is always sent with a duplicate. I need to send only one frame.Is there a solution for this ?Thanks.
Resolved! How to change USB COM Port of name ?
Excuse me.Can I change COM Port of name in keil C ?if there is no way , how to change it name ?
Resolved! Program stmf401re in DFU mode
Hi,I have custom board for stmf401 and I try to program it in DFU mode. I set the boot0 to 1 and reset the chip but it is not recognized as DFU device. (not listed in the DfuSe).Do I miss any procedure or settings?(I have connected the PA11/PA12 pins...
Why does the STM32F407 send a STALL on USB_FS?
Hi,I'm using STM32F407 and try to establish a USB communication. Until now the device is present in the system and is also able to send and receive bulk transfers. To test the functionality I wrote a simple example:if MCU receives a string of 5 chara...
Resolved! Using the built-in bootloader on a STM32H743 (Nucleo-144)?
Hello,I am attempting to use the built-in bootloader to flash code to the STM32H743 Nucleo-144 using the USART. I have tried two methods: following the flow chart in AN2606 Figure 48, and jumping directly to the bootloader, but so far neither method ...
Resolved! DFU bootloader for STM32F429 using external PHY?
I'm developing an STM32F429-based high-speed USB audio device that uses a Microchip USB3320 external PHY and would benefit from a DFU mode. Is there an example available anywhere for such a configuration?The default bootloader present in system memor...
custom bootloader for STM32H7 erase FLASH less than 127Kb
hi, I am writing a custom bootloader and its only 20Kb in size, as per the STM32H7 datasheet it looks like I can't erase FLASH smaller than 128Kb, just wanted to confirm that in this case I have to waste rest of the sector data and allocate the full ...
Need help working around USB OTG Errata (STM32L4S5VI)
Rev 4 of "STM32L4Rxxx and STM32L4Sxxx device errata" states that"Data FIFO gets corrupted if the write sequence to the transmit FIFO is interleaved with other OTGFS register access"and to work around it,"Ensure that the transmit FIFO write accesses c...