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Forum Posts

STM32G030F6 uart dma idle interrut CNDTR not work properly

Hi, team, I am work on stm32g030f6's uart dma. And config them as idle interrut mode to receive data.When the uart data on high frequence like 10bytes/30ms , the CNDTR will be aways MY_BUFF_LEN -1 , so i only can receive 1 byte data. After reset the ...

XWang.4 by Associate
  • 858 Views
  • 1 replies
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Need a counter to count in micro seconds

Hi All,I am using STM32F74xxx.I need to count micro seconds. currently we are using HAL_GetTick(), function but it gives the time in ms.After I searched on google I found some ways to get micro seconds count, and I tried it but no luck.can any one he...

RRajb.1 by Associate II
  • 2204 Views
  • 4 replies
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Can't update GPIOx_MODER register value in STM32H753.

I work with STM32H753 through 3-rd side hardware (Algocraft WN-1 programmer) and have an access to the registers. I try to read/write GPIOJ pins. For this purpose I enabled GPIOJ clock by writing the AHB4 peripheral clock enable register (RCC_AHB4ENR...

LKuri.1 by Associate II
  • 661 Views
  • 2 replies
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2021 STM32 Wish List

Dear Community Members & STM32 fans,Peculiar year it has been, 2020 comes to its end. This is an opportunity to say "Thank you" because:you don't hesitate to bring help to othersyou help us improve our STM32 offeryou have confidence on ST Communityyo...

Resolved! AXI SRAM losing last few writes across reset

it seems that a write to AXI SRAM very shortly before a system reset (via AIRCR) gets lost. I wrote a very short block of code that simply reads a word from 0x24000000, increments it, writes it back, and resets the processor. I can see that the value...

CHead by Associate III
  • 3803 Views
  • 12 replies
  • 2 kudos

Bluetooth with STM32

Is there any part from STM which able to operates as bluetooth HID keyboard as well as bluetooth touchpad?

Bs.1 by Associate II
  • 311 Views
  • 0 replies
  • 0 kudos

Floating input pins under startup - is it really that bad?

Hi :) So I keep reading everywhere that leaving a CMOS input pin floating is bad because it is high impedance, can oscillate, etc. I understand and agree.But while a MCU is starting up (or when you're programming it) all its pin are in input state un...

SLasn.1 by Senior
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  • 7 replies
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Resolved! Running SPI receive in the background

Hi, I have a STM32F407 board that is running as a full duplex slave. it receives data from a Raspberry Pi configured as a SPI master. Is there a way to receive data from the RPi in a non-blocking mode? One way I could think of was to set the CSN line...