About sbend

sbend · 2024-08-16

Hi,On the STM32 F4 products, there is a hardware/ROM bootloader, that can be activated through the BOOT0 pin. It works great, no issues with that.In a production environment, I would like to flash the board automatically, without manually pressing bu...

sbend · 2024-01-05

Hi,I am trying to use the async transfers with usarts, but it fails to enable the UART (using uart_rx_enable), due to no DMA configured for the usart.I have not been able to modify the device tree for DMA, but so far unsuccessful.On the dma2 node, I ...

sbend · 2023-06-02

I have a custom board with an STM32F303CBT6 MCU with an external 16 MHz oscillator, but I am unfortunately not able to get Zephyr RTOS to successfully boot.From the KConfig options, it does not look like the specific variant of F303 is supported. It ...

sbend · 2024-08-16

Just checked the AN2606, it is pretty clear for the STM32F412xx. It does not check the internal memory for BL activation.33.1 Bootloader configurationThe STM32F412xx bootloader is activated by applying Pattern 1Pattern 1: Boot0(pin) = 1 and Boot1(pin...

sbend · 2024-08-16

@TDK wrote:> I still cant figure out if a factory STM32 F4 enables the system bootloader, with USB DFU, on initial boot.It will not. You need to pull BOOT0 high.Thank you - I think it answers my question.The specific MCU is STM32F412VGT6, but I assum...

sbend · 2024-08-16

Thank you for the information! I might be reading it wrong, but it only describes the DFU bootloader, after it has been activated. My questions is more related to, the conditions that activates the bootloader. In the document you provided, there is a...

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STM32 ROM bootloader, initial state and when erased

STM32F3x Zephyr Project, DMA configuration

Running Zephyr RTOS on STM32F303CBT6

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Re: STM32 ROM bootloader, initial state and when erased