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Resolved! USART DMA with LL drivers on STM32H7A3

I've been writing apps using the STM HAL drivers for a while.  I'd like to move to the low level drivers in order to have a better understanding of what's happening in my app.  Comms over a UART with DMA is a critical part of most of my apps so I'm s...

magene by Senior II
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  • 10 replies
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Resolved! STM32L0 -> DMA, parallel operations

Dumb question, can the DMA perform separate, parallel operations with the different channels? For example, could I use the DMA to transmit with the UART and the SPI devices at the same time without one interrupting the other? I'm unclear from readin...

Dude by Associate III
  • 910 Views
  • 3 replies
  • 0 kudos

2 different rotary encoder on STM32F103

Posted on May 18, 2018 at 07:29 Hello everyone, I want to run 2 rotarty encoders on my STM32F I'm using cubemx. The first one is a 2000 step rotarty encoder like these: https://www.aliexpress.com/item/1pcs-E6B2-CWZ1X-2000P-R-encoder-for-Omron...

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paul sauv by Associate III
  • 2015 Views
  • 7 replies
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What is the Stm32L4 VDD12

"Hello, while examining the STM32L412C8 microcontroller, I came across the term VDD12. What is VDD12, and can I use the peripherals without making the VDD12 connection? In other words, is it mandatory to make the VDD12 connection?"

One pulse mode configuration

Hello to everyone,I would like to know more about 'one pulse mode'. I'm using a STM32F446RET and I need to generate 1 or more pulses when an event occours.In my project, channel 1 of TIM9 is the pin chosen to generate the waveforms.I got that the 'on...

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Las1 by Associate II
  • 6705 Views
  • 9 replies
  • 1 kudos

Resolved! Critical issue with I2C and DMA on new STM32U5

I experience a strange problem with I2C, DMA and the latest STM32U575ZI-Q, not seen on L4 and H7 MCUs.After a successful data transfer from SMBus target (slave) to controller (host) the last PEC byte stays in RXDR registry. On the next transfer in th...

TDJ by Lead
  • 1340 Views
  • 2 replies
  • 0 kudos