About Michal Dudka

Michal Dudka · 2024-05-17

Hi,Few days ago i've encountered a strange behavior of the comparator at STM32G4. I investigated the problem under controlled conditions (used Nuclo kit instead application PCB) and the result is startling.Comparator 4 configured to get positive inpu...

Michal Dudka · 2024-05-17

Hi,HAL and LL DAC configuration structure and its parameters naming can be confusing. Reference manual claims that DAC "mode" (register ADC->MCR, bits 0..2 or 16..17) can be in one of following four combinations when not used sample and hold mode: 0 ...

Michal Dudka · 2024-05-16

I brought the sinewave with 120mVpp amplitude as positive input to STM32G431K8 onboard comparator (COMP4). Negative input is internaly taken from DAC. Comparator hardware output is connected to oscilloscope probe (short trace, spring connection) and ...

Michal Dudka · 2024-05-16

STM32G431K8 SVD file seems wrong. Reference manual (RM0440, February 2024 RM0440 Rev  show EXTI->PR1 bits PIF29,PIF30,PIF31 (Comparator 3,4,5 outputs). Fresch SVD file (STM32G4 SVD V2.2) missing these bits.

Michal Dudka · 2024-02-02

Hi,i have STM8L101F2 at breadboard. Decoupling capacitors 100nF+22uF, supply voltage 3.3V from linear lab.power supply, nothing connected to any pin. Simple firmware (Cosmic compiler)void main(void){ GPIO_Init(GPIOA, GPIO_Pin_All,GPIO_Mode_In_PU_No...

Michal Dudka · 2024-07-12

Collection of interesting websites about STM8:https://blog.mark-stevens.co.uk/category/stm8/https://hw-by-design.blogspot.com/search?q=stm8https://hw-by-design.blogspot.com/2018/07/stm8-software-spi.htmlhttps://lujji.github.io/blog/bare-metal-program...

Michal Dudka · 2024-07-11

Not exactly. He just probably forgot to count his actual rising times in timing settings.

Michal Dudka · 2024-07-11

GPIOs are in open drain mode. Only external pullup resistor and trace capacity set duration of rising edge. MCU does not know how long it takes and not even measure rise time duration to be able maintain exact communication speed - because it is not ...

Michal Dudka · 2024-06-29

If you decide to use "parallel interface" (3+4 pins) instead variant with I2C bridge then you can use my library: http://www.elektromys.eu/knihovny/stm8_hd44780_v20.zipIt runs in tens of applications of various users.

Michal Dudka · 2024-06-28

MCU is overloaded by interrupts. Be aware that entering and exiting interrupt routine take some time as well as your code inside. Generaly you should not call more then about 100k ISR per second (and even that depends on how long the ISR is).You shou...

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STM32G431 Comparator BUG

STM32G4 DAC output HAL+LL naming

STM32G431 Comparator (internal) output glitch even with maximum hysteresis and clean input (bug ?)

STM32G4 SVD files missing few EXTI-PR1 bits.

STM8L101F2 consumption in Halt mode

Re: Documentation/Path for learning STM8S

Re: HSI I2C Accuracy

Re: HSI I2C Accuracy

Re: Can't get stm8s003f3p6 to work with LCD1602!

Re: stm32f429 tim8 in up count mode, update interrupt couldn't generate 10Mhz PWM.