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kf_SEA · 2024-04-03

Hi,I hope somebody can explain the following behavior:I use a NUCLEO-G474RE board for I2C testing. I have an external I2C slave which provides the required pull-ups for SDA/SCL when it's powered.Now my STM32 started with connected but not powered I2C...

kf_SEA · 2024-03-26

Hi everyone!I found the following diagramm in AN2606 and my understanding was, that the bootloader will be executed when there is no valid content in flash memory.I know that boot pins or a jump from user code can be used to enter the ST bootloader, ...

kf_SEA · 2024-03-11

Hi,I'm currently gaining experience with the STM32G4, whose ROM bootloader supports various interfaces. AN2606 describes the configuration of the pins occupied by the interfaces.Various pins are operated in push-pull mode, which can lead to undesirab...

kf_SEA · 2024-04-05

Hi @Imen.D ,thanks for your respronse.I don't have problems with I2C in general, but only if I run my application without I2C pull-ups from the beginning.It seems to be the a problem when trying to communicate without them.When I enable the pull-ups ...

kf_SEA · 2024-03-11

Hi @AlexSmart thanks, but the question not about the pins or option bytes to enter the bootloader but about the interfaces supported by the bootloader for communication (USART, SPI, IC2). For all of them the bootloader configures GPIOs (AN2606) which...

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STM32G474 strange I2C behavior

ST Bootloader behavior when flash is not programmed

ST bootloader - pin states

Re: STM32G474 strange I2C behavior

Re: ST bootloader - pin states