About KK.4

KK.4 · 2023-05-07

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up ...

KK.4 · 2023-04-29

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up...

KK.4 · 2023-03-16

I working on a STM32L462 project, which needs to invoke the bootloader from the user program. I don't have access to the Boot0 pin. I came across two methods of doing the same but not sure which one should i employ for clean transition.Method 1: - Se...

KK.4 · 2023-03-15

I am connecting the STM32L4 MCU UART to silicon labs IC CP2105 (UART to USB converter). The UART to USB bridge is bus powered from the type C connector and the STM32 is separately powered from the battery. When the CP2105 is in off state ( No USB ca...

KK.4 · 2023-03-12

I am planning to use STM32L4 hardware oversampling by a factor of 2. With the current setup (without oversampling), I am triggering ADC capture and conversion using Timer update event. The timer update event is generated at 10kHz and so the ADC is s...

KK.4 · 2023-05-07

Thanks @KnarfB and @Community member for your valuable comments. Should i use the pull up setting that comes with the UART configuration itself (As mentioned in the image below) or should if configure the pin as input with a internal pull up bef...

KK.4 · 2023-04-29

Thanks for your insights. Unfortunately i don't have debug pins exposed in the custom board for slave. I think i can rule out the BREAK error by the following observation, please correct me if otherwise.Both the boards are power cycled at the same t...

KK.4 · 2023-03-13

I am not doing oversampling to increase the resolution but just to increase the total time for DMA to fill a fixed buffer of 1024 array. Even though the ADC samples with the same time, the effect of averaging will act as low pass filter and increase ...

KK.4 · 2023-03-13

Thanks for the reference. From the above definition, if I set my ADC clock and ADC sampling time, can I control the sampling time in oversampling?Ex. ADC input clock input = 26 Mhz and prescaler setting of 10, the effective ADC clock would become 2...

KK.4 · 2023-03-11

Thanks for your quick response. I am using anti-aliasing filter before the ADC. I wanted to have fixed sampling frequency to have fixed cut-off anti-aliasing filter (to respect the Nyquist criteria). But my application demands to have variable sampli...

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STM32 UART receives Null character(\0) on reset.

UART Transmission - Why one MCU's UART GPIO pin state(Pull up) during the initialization impacting the Receiving/Transmitting or wake up capability of MCU2, connected over UART?

STM32L462 - Invoking UART bootloader from user program ( without using Boot) pin.

STM32 MCU UART TX current

STM32L4 ADC Oversampling period

Re: STM32 UART receives Null character(\0) on reset.

Re: UART Transmission - Why one MCU's UART GPIO pin state(Pull up) during the initialization impacting the Receiving/Transmitting or wake up capability of MCU2, connected over UART?

Re: STM32L4 ADC Oversampling period

Re: STM32L4 ADC Oversampling period

Re: STM32L4 ADC oversampling - What is the total sampling time ?