About dfrejek

dfrejek · 2025-02-13

Good day,after troubleshooting some issues related to a bootloader, I have figured out that the address of the interrupt vector table (SCB->VTOR) is defined in a hard-coded, non linker aware way as "SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET". This mea...

dfrejek · 2024-09-23

Hi Guys,is it possible to configure a peripheral in CubeMX without assigning all the pins (usually) required for that peripheral. This is a quite typical scenario, if a peripheral is used other than originally intended.E.g. I like to use I2S for effi...

dfrejek · 2024-07-25

Hi guys,I am wondering, if there is any “real” benefit in using the HAL over the LL for simple peripherals like GPIO, ADCs or Timers.So far it looked to me like the HAL does not make the user code more compact or readable. Instead, it just gets more ...

dfrejek · 2024-07-25

Good day,my design uses an externally powered STSPIN32G4, so that the CPU can be powered while VM is off.Once VM is present the fault flags (mainly MC_UNDER_VOLT) can be reset and the motor can be started. The motor control will go through it’s initi...

dfrejek · 2024-07-24

Hey everyone,the STM32G4s (including the STSPING4) have the VREFBUF feature, which allows to use an embedded voltage reference as reference voltage for the ADCs and DACs.I’m a bit surprised to see, that this is not used by default on the official dev...

dfrejek · 2025-02-13

Thanks for your reply.I have already implemented in exactly the way you described and it works as intended. >>> I think SCB->VTOR is only assigned if USER_VECT_TAB_ADDRESS is defined.Sadly no. At least for the C0 and G4 with the respective SDK versio...

dfrejek · 2024-09-24

There is another benefit of I2S, which is much more flexibility in selecting the baud rate. While SPI timing might be slightly more accurate, for all chips I know, the baud rate divider divider is only exponential (1, 2, 4, 8, 16, ...).For I2S you ca...

dfrejek · 2024-09-23

In my case, that’s not an available option, since CubeMX does not know of a I2S configuration with only the data line.Normally, this configuration would be useless. But, the I2S can be used to create a bit stream with precisely controllable timings. ...

dfrejek · 2024-09-23

Hi,thanks for the reply. This is not exactly really a pretty solution, since it would look a bit confusing and create "dead" / redundant code, yet it will do the job.In addition, this does not allow to configure the pin as something else in CubeMX, b...

dfrejek · 2024-07-29

Yeah, makes totally sense that my suggestion didn't work since the register write will happen during the cycle. Since you initially mentioned, the problem happens only when you have a longer pulse, I assume that the pulse match is you DMA trigger.Try...

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Potentially wrong initial value of SCB->VTOR

Configuring a peripheral without all pins assigned

Benefits of HAL over LL for simple peripherals

STSPIN32G4 Acknowledging faults does not clear gate driver fault

Using VREFBUF for motor control

Re: Potentially wrong initial value of SCB->VTOR

Re: Configuring a peripheral without all pins assigned

Re: Configuring a peripheral without all pins assigned

Re: Configuring a peripheral without all pins assigned

Re: PWM with DMA makes unwanted pulse stream