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Forum Posts

FATFS -SDMMC - DMA transfer problem

In CubeMX 5.3.0 I have configured FATFS and FREERTOS for a card running STM32L431. The HAL SDMMC driver is communicating with SD card, and everything goes well until the FATFS want to read the MBR block from the SD card. In this case, the DMA channel...

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mads.l by Associate II
  • 774 Views
  • 1 replies
  • 1 kudos

STM32U575 ADC sampling issue

HelloI use a STM32U575 develop board to do the ADC sampling. The inject signal is 10mV RMS with 1.648V bias voltageHowever, from the sampling result, there is a obviously break point in the result.Could you help explain the reason and how to eliminat...

YFANG.2 by Associate III
  • 1488 Views
  • 2 replies
  • 0 kudos

DMA buffer Question

I am trying to send large streams of data into the STM32H753 and I'm trying to maximize the baud rate, ideally aiming for a baud rate of 921600. Unfortunately, I don't know the byte size that will be incoming, which makes it difficult to know how to...

JayDev by Senior II
  • 2314 Views
  • 5 replies
  • 0 kudos

Resolved! How to made a function to call other functions?

Hi to all!!!I do repeteadly this function:switch(segundero_d){case 0: numero_0(); break;case 1: numero_1(); break;case 2: numero_2(); break;case 3: numero_3(); break;case 4: numero_4(); break;case 5: numero_5(); break;case 6: numero_6(); break;case 7...

Systick only runs when CPU is active

I've got a strange situation. I've enabled systick, but it doesn't keep time unless the CPU is active. Key excerpts:main.c: SysTickInit(sys_clocks.SYSCLK_Frequency);void SysTickInit(unsigned base_freq) { SysTick->CTRL = 0; // Turn it off. ...

RSext by Associate II
  • 5121 Views
  • 12 replies
  • 9 kudos

STM32H7 HAL_Delay(200); Problem

This is my first time working with STM32H7B3IIT6 MCU. I wanted to make a led blink application, but the program is HAL_Delay(); it goes into an infinite loop and doesn't exit.

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Resolved! LSE Drive

Hi,I have questions about LSE Drive (STM32L0).1) In RCC register are LSEDRV[1:0] bits and I am not sure if I understand it corretly.From datasheet about these bits: They are cleared by a power-on reset or an RTC reset. Once “00�? has been written, th...

JJRR by Senior
  • 1662 Views
  • 1 replies
  • 0 kudos