STM32 MCUs Products

Is there a difference in startup time between STM32F303 and STM32F407? I am experiencing relatively longer start up time for the STM32F407..

I refer to the attachment. I am using a push button to power on a STM32F303. As soon as the push button is pushed a P channel FET is activated supplying voltage to the STM32F303. As soon as the STM32 starts it activates a pin which takes over activat...

Stm32H750 FDCAN Interrupt lines confused

In the stm32H750 reference munal, I can see the details of fdcan interrupt, mostly by config registers (FDCAN_ILS, FDCAN_ILE ), but I didn't see the illustration about which interrupt signal(like tx complete ) occurs in which interrupt line(line ...

Request For Comment on this way of combining C++ and interrupts on STM32 microcontrollers

I'm trying to teach myself C++ on STM32. Unfortunately the books on C++ I have and most websites I found do not mention interrupt handling. The websites where it was explained (embedded.com, stackexchange.com, etc) did it in a way I simply do not (y...

External memory space support in size for STM32H755X and STM32H745X?

There is a minor issue in pin names of STM32H750XB datasheet

Hi sir/madam,In the datasheet of STM32H750XB 57th page J1 pin name is given as PH0-OSC-OUT and in 61st page the same pin is given as PH1-OSC-OUT. which do we need to consider?Datasheet: https://www.st.com/resource/en/datasheet/stm32h750ib.pdf 

Trying to integrate the waveplayer from stm32137 example in L4+ MCU. However, the loop updating the DMA buffer only enters DMATxComplete on 3 occasions?

Here's the essence of what I have at the moment. I wonder why it does not enter DMATxComplete, I have tried with 128 and 30 buffer sizes...//****** dac.c **********//   DAC_HandleTypeDef hdac1; DMA_HandleTypeDef hdma_dac_ch1; DMA_HandleTypeDef hdma_d...

DAC output error

I'm using STM32F405VGT6 to output sine wave by using its dac.After every output sample,which is triggerd by timer, dac's data holding register 'DAC_DHR12R2' is not holding the data and is reset to zero.So the output wave is something like sine wave m...

wrong data send with slave i2c1 on STM32F103RCT6

STM32F103RCT6 i2c work as slave mode，master i2c machine worked with clock speed 400KHz.When master read many bytes from slave,a wrong data will come out behind the address byte.in normal,master transmits 0xA1，then it will receive 0x11 0x22 0x33 0x44b...