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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
  • 1474 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...

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 II
  • 1043 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
  • 2502 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
  • 1369 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
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  • 0 replies
  • 0 kudos