STM32 MCUs Products

F42x MCU flash program read operation gets wrong results.

my read flash reading is bellowing:unsigned short * pAddr = (unsigned short * )​0x08004000;unsigned short read_value=0;for(int i=0;i<10;i++){read_value = *(pAddr +i);printf(.....,read_value );}​---------------I add read_value to watch window ,however...

Is this just a notice or is it an error?

When I try to run a project in Release I get this message:No source available for "Reset_Handler() at 0x80007c4"What does this mean ?I do not see it in debug, and BTW I did set the mode to Release...

F429 I2C bug

Hi, i'm using stm32f429 to develop i2c communication, the mcu cannot generate START signal after running a few minutes but the SDA and SCL all high, I add the CR1 register to watch and find the CR1 cannot be modified after calling the bellowing: ​br...

STOP mode and DWT

Hello everyone,stm32l series MCU going in STOP mode and dwt has been enabled before, RTC wake it up with 20 seconds. Callback is called with 20 seconds and always dw_val increments with 2 sec. What is going on the backgorund. Normally as much as I go...

How to use correctly The ADC using the HAL with interrupts on STM32L4 Nucleo board?

We're trying to read from the ADC from 2 channels by using EOC interrupts.When we read the values seems like the channels are wired together.As such we can't distinguish between whether they come from one channel or the other. Here is the code that w...

How to detect that console have just connected to HAL UART?

I need my code called when something connects to the HAL UART.I have a simple mini-debug that just prints something to the UART and I see it on a console connected to the STM debug COM port. I noticed that the HAL_UART_Transmit() always returns HAL_O...

I am working on reading an External 3 bit parallel CMOS ADC (4MSPS)(from MAX2771 board) digital output through STM32H7 board , my only concern if the STM32H7 can handle this amount of samples and save it to pc ?

ADC time spends

Hi All.I am building a function using ADC with DMA.what i did in the while loop is just toggling a GPIO Pin.but it seems that the while loop will be interrupted when ADC is triggered.does it means that when ADC is triggered, while loop will be stoppe...