STM32 MCUs Products

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STM32L0 STOP and STANDBY mode.

I have some questions. I read that STOP mode has a "RAM retention", so when it wakes up it the whole data is still intact (not cleared).When the RAM retention is off then the data is gone when it goes to STOP mode. So when it Wakes up does it restart...

Xenon02 by Senior
  • 2593 Views
  • 13 replies
  • 4 kudos

STM32H7B0 How to get input frequency of timer 3

Dear,Used MCU: STM32H7B0, 100 pins.In the datasheets we had found that TIM3 use the APB1 peripheral clock.In our case is this 120MHz. But when we use the function "HAL_RCC_GetPCLK1Freq()" we become 60MHz.This isn't correct. So what function should we...

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OGhis by Senior
  • 489 Views
  • 4 replies
  • 1 kudos

Resolved! STM32H7B0 ADC 2 incorrect sample rate.

Dear,Using STM32H0B0, 100 pins version.we wish to sample 1 input with ADC2 at a fixed frequency. This must not deviate and for this we use timer 3 set to the desired sample rate.In the pictures we use 100Khz, but later to go to 1Msps.So the timer 3 i...

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OGhis by Senior
  • 549 Views
  • 1 replies
  • 0 kudos

STM32 SPI master and slave issue

Hello everyone.I am working on a project and I have two stm32 MCU connected over SPI interface. One acting as a master (STM32H743VIT6) and the second acting as a slave (STM32C011U6) in full duplex.When sending data between the two devices the receive...

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sousa by Associate II
  • 733 Views
  • 5 replies
  • 0 kudos

Unexpected timing with nops

Hi,I am confused with pin toggle timings, why I am getting non equal pulse widths like in the picture, I turn off all compiler optimizations and disable all of the interrupts, code is simple pin toggling. My controller is STM32L431 running on 80MHz.T...

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tompa by Associate III
  • 1680 Views
  • 14 replies
  • 8 kudos

Resolved! High AD noise on STM32F103 (bluepill)

This is on STM32F103C8 (bluepill)The A0 is connected to a voltage divider between bluepill's 3v3 and GND,And the output is very noisy. adding a delay did't do not much good```void setup(){Serial.begin(9600);// Enable ADC1 and configure itRCC->APB2ENR...

pilot by Associate III
  • 600 Views
  • 2 replies
  • 1 kudos

stm32h755 Nucleo M7 debug problem

I am Juan de Jesus, I am a graduate student in engineering. I just bought a NUCLEO STM32H755 board.I am writing a simple code to test this board, an algorithm that makes LED 1 blink.The program compiles very well, and after this, I have made the conf...

SDIO Bit Start Error with STM32F407VGT6 and STM32CubeMX

Posted on January 11, 2015 at 20:46I'm having problems with communication through SDIO. In the initialization process, where are only sent commands, everything works, but the function HAL_SD_SendSDStatus is returning SD_START_BIT_ERR. Informations a...

silas by Associate II
  • 861 Views
  • 2 replies
  • 0 kudos

Error stm32G030 not specified in the errata file.

When using RTC, the GPIO pin state of PA4 may be corrupted. RM0454, section 23.3.3 says: "In addition, it is possible to output RTC_OUT2 on PA4 pin thanks to OUT2EN bit. Thisoutput is not available in VBAT mode. The different functions are mapped on ...

PBobo.1 by Associate II
  • 1860 Views
  • 11 replies
  • 1 kudos

Resolved! STM32F756 jumps unknown address "BX LR"

Hello everyone,I and my collegue have more than 20 years experience on embedded desing with MCUs. We have a problem which we haven't seen this kind of problem before. I guess someone can help us in here.MCU: STM32F756IDE: Project created from cubeMX ...

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