STM32 MCUs Products

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Forum Posts

Bare metal USART2 clock speed question

Hello,I am learning bare metal programming for STM32F446RE and am trying to write a simple transmit driver for USART2. I managed to do it but my only problem is when I use HSI 16Mhz clock speed (or anything lower) I get a weird first character. When ...

STMnoob_0-1758935979151.png
STMnoob by Associate II
  • 214 Views
  • 3 replies
  • 2 kudos

Resolved! DFU Download & Upload only 1024-byte page works

Hello, I'm using WinUSB and I'd like to program the flash memory at address 0x0800c0000 in 256-byte increments. This works fine the frame but every frame after this gets written to blocks in increments of 1024. It seems that if one needs to push more...

Resolved! STM32H503 simultaneous ADC and DAC use

I've spent some time recently trying to prototype a small project based on the STM32H503 which would need to have the ADC and DAC running simultaneously with multiple channels of analog I/O via DMA. I was able to get this all coded up but discovered ...

Resolved! RTC_OUT availability while STM32H7 is powered off

Hi,I'm using an STM32H7 microcontroller and need to get the RTC working.I set RTC_OUT to 1Hz and set the LSE to a 32.768Hz crystal, and inserted the CR2032 battery.When the microcontroller is powered (VDD 3V3), I see the waveform oscillating at a fre...

AndreaTW by Associate II
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  • 3 replies
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How to get PVD working on STM32F1 series

I have a question about PVD.I have this main.c file. My interrupt function void TM_PVD_Handler(uint8_t status) won't execute when the power goes off. Why? In this case, I'm sending a message to the UART to see if my computer recieves the message befo...

DMårt by Lead
  • 203 Views
  • 3 replies
  • 1 kudos

GPIO change Mode without losing the charge

Hello everybody,I'm trying to get from a pulled up state / driven up state to a tristate pin without losing the charge that is on that pin.It seems to me, that whenever a pullup is deactivated (PUPDR), that STM32 will first discharge the pin and then...

THein.3 by Associate II
  • 99 Views
  • 6 replies
  • 1 kudos

MCU Selection High Speed SPI and QSPI

Hello Team,We are Looking to select MCU Which has High Speed SPI and QSPI in a Single Device ,High Speed SPI - 50 Mbps to 90 Mbps ( One channel ) to interface External Ethernet Controller QSPI  - ( One channel ) -  to interface with External Motion U...

bsuthar by Associate II
  • 88 Views
  • 2 replies
  • 0 kudos