STM32 MCUs Products

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Forum Posts

Crack at the end of I2S tranmission via DMA on STM32L073

I'm running a STM32L073 to generate a sine wave tone via I2S in normal DMA mode. The amplifier is a MAX98357A. The MODE pin is connected to VDD so only left channel is considered. I2S runs at 48kHz and the uC clock source is internal. The output tone...

JSchu.5 by Associate II
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  • 1 replies
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How to reduce jitter in SPI (register mode)

Hi all, I am using register mode SPI for communication purposes, clock is 210Mhzinterrupt is for every 4khzinitialized SPI with HAL formatSPI data rate: 35MBpswhen I send data through SPI I can find some jitter inside it. But when I drive the same si...

Roshan by Associate III
  • 1226 Views
  • 4 replies
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Resolved! [STM32F412] SPI issue with MAX7219

I am trying to transmit through SPI to a MAX7219 chip on my STM32F412G-Discovery board. The system clock is running at 100 MHz. I am using a level shifter to handle the 3.3V -> 5V voltage changing. I have used this IC on an arduino so I do know it wo...

MB.2 by Associate III
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  • 8 replies
  • 1 kudos

Program data on flash from PC

Hi, I have a simple code running on STM32L0 MCUs. I will need to change some data on their firmware on each board depending on some analog properties of another component.There is a practical way to program a portion of memory with some data after th...

GMont.4 by Associate II
  • 1093 Views
  • 5 replies
  • 0 kudos

Resolved! How to receive hex data from the terminal using UART?

I want to receive hex data from terminal like 0x66, 0x55, 0x44, 0x23, 0x11, 0xaa, 0xbb, 0xcc. Normally we can receive messages in string over UART. But I want to receive hex data instead of character or string from terminal. I am using stm32cubemx HA...

MAlam.2 by Associate II
  • 4528 Views
  • 6 replies
  • 0 kudos

Resolved! Speculative access and STM32H7 Memory Protection Unit

After seeing the MOOC about the MPU Usage I am wondering about the speculative access reads. From the video it seemed, that they could occur to any random location unless that area was configured as strongly ordered or device memory. What about the a...

JRS by Associate III
  • 4819 Views
  • 4 replies
  • 0 kudos