What is the cpu state when exiting standby mode
When the MCU is placed in Standby Mode, where does the CPU begin to execute when exiting the mode? (for example, on an RTC event) Is it a reset or a return from interrupt? RM0394 isn't clear on this.
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STM32L475V: Using ADC without HAL fails miserably
I am officially confused.I'm trying to use an ADC without the HAL layer, and for some reason I just don't get it to work. With HAL, it works fine.I have tried comparing register contents, and I've now run into a wall. There must be something the HAL ...
STM32L072 – LPTIM1 external pulse counting with LSE in STOP mode not working
STM32L072 – LPTIM1 external pulse counting with LSE in STOP mode not workingDescription:Hello,I am trying to configure LPTIM1 on an STM32L072 to count external pulses from a button connected to PB5 (LPTIM1_IN1). The goal is to keep counting pulses wh...
DAC still works even when VDDA and VSSA pins are floating, but how ?
I am using the DAC on the NUCLEO-L433RC-P board for development and have also designed a custom PCB using the STM32L433.The DAC is used for audio voice prompts (12 bit, 44.1kHz stored in external flash) and fed into an audio amplifier (TI LM48100Q).H...
Both OCTOSPI ports memory mapped on STM32H7A3?
Hello,I am having trouble memory mapping both OSPI ports at the same time. Can I run a QSPI Flash on OSPI1 and a OSPI Hyperbus RAM on OSPI2 and have both be memory mapped or do both OSPI ports need to be running in the same mode to be memory mapped?T...
Struggling with custom bootloader on STM32L433 (only simple applications work)
I have written a custom bootloader that is running on a Nucleo-L433RC-P board. The application uses USB CDC to call the bootloader and the bootloader uses USB DFU to download the application. I wanted to use USB to call the custom bootloader, rather ...
Infinite loop at startup when optimization enabled.
Our STM32H745XIH microcontroller enters an infinite loop after updating the software with “Release” compilation flags (optimization enabled). This only happens with a specific build, and changing a single piece of code that is definitely not related ...
STM32U5G9J-DK1 MIPI DSI pinout issue
I'm attempting to use a custom LCD daughter board designed to plug onto the STM32U5G9J-DK1 in place of the round display that comes with the DK1. The schematics for the DK1 have a note in read indicating that the DSI_CK_N and DSI_CK_P pins are revers...
STM32H7B3 continously resetting when executing code from external flash
We have a working production firmware for the STM32H7B3 that uses a Winbond W25Q01JVZEIM external flash using QSPI in memory-mapped mode to store data and assets for a TouchGFX and other applications.Now, due to internal flash limitations, we are att...
i2s clock issue in stm32h723zg
hello, i hope you are doing good. i am facing an issue in configuring i2s in dev board nucleo-h723zissue i am facing is no clock at i2s2-sck pin.i tries all other i2s port also. i checked clock through logic analyzer .here is my clock configuration: ...
