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stm32 dma request synchronization settings

Hi,I have an external SPI 8 channel ADC which is connected to the STM32,one of timers would generate a 32KHz 50% pwm signal which is connected to the ADC convert pin, the ADC has a busy pin which is connected to the EXTI0 of the MCU.The plan is to us...

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Resolved! STM32H743 - ADC wrong sampling rate

Hi STM32-Community, I'm using an STM32H743 with ADC3 in circular DMA mode. ADC has a clockfrequency of 48 MHz. I'm using 8 channels within this ADC3 and also configured the DMA with said channels each with a sampling time of 64.5 cyles. I'm using an ...

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NW.2 by Associate II
  • 1705 Views
  • 4 replies
  • 1 kudos

Unwanted flash erase issue

Hi, I am using STM32L072CZT6 for my project. The device operates in two stages: It wakes up at scheduled intervals, save the number of interrupts received to flash , and returns to standby mode. During standby, interrupts wake the device, the count i...

Deepu joy by Associate II
  • 1011 Views
  • 3 replies
  • 1 kudos

STM32 U5 Hard Fault when using SRAM

Hello.I'm trying to use STM32 U5A5' SRAM (SRAM1,2,3,5) and I'm encountering some very weird behavior.When I use the entire aforementioned sram blocks, my mcu hard faults.uint8_t __attribute__((section(".TEST_Section"))) data[1024*1024*2];int main(voi...

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PMera.1 by Associate III
  • 1155 Views
  • 1 replies
  • 0 kudos

Resolved! STM32H7 without SMPS - VCAP / LDO ?

Heyho,about VCAP / LDO connection in STM32H7 series without SMPS, for example in STM32H733ZGT6 (LQFP-144), when using the internal LDO for core supply.As far as I understand, the VCAP pins are for the connecting buffering capacitors to the internal L...

LCE by Principal II
  • 2895 Views
  • 5 replies
  • 3 kudos

Resolved! Mems1 integration

Hi,Im using STM32L031F6P6 mcu for one of my project. Im also using IIS2MDCTR & LSM6DSV16BTR sensor.I need to find heading regarding that i have few doubts.1.Will STM32L031F6 mcu support mems1 package?if no could you suggest a mcu which support the sa...

STM32 GPIO SINK SOURCE CURRENTS

USING MCU - STM32H743XIH6As per datasheet "STM32H743XIH6_Datasheet" page 139 it is mentioned that GPIO can sink/source 8 or 20 mA.When MCU will be going to source 8 mA and when it will source 20 mA?Is there any current control configuration inside MC...

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Ab1 by Associate II
  • 1716 Views
  • 4 replies
  • 2 kudos

RS485 and Modbus

hi i am saishiva i am working on the STM board from 10 days but i am not getting the clarity about the how to activate the RS485 using the modbus protocol can you pleaae help on that  

saishiva by Associate
  • 630 Views
  • 0 replies
  • 0 kudos