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Resolved! Sleep mode, GPIOs and RCC_AHB2LPENR - STM32H5, EXTI wakeup sources

HelloWhat will happen with the IOs when MCU is put to Sleep mode (one of power modes in PWR) and register bits in RCC_AHB2LPENR for each GPIO-block are reset? When bits are reset, the peripheral clock is disabled during Sleep mode.Can the IOs still b...

Imre by Associate III
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  • 4 replies
  • 0 kudos

How to use half precision floating variable

Posted on May 22, 2017 at 12:26Hello,I would like to use half precision floating variable in my project but i don't know how. I'm working on a NUCLEO-L073 board that embeds a cortex m0 STM32l073 MCU that does not have any FPU. I'm using the SW4STM32...

How to use Vrefint when Vref+ is tied to Vssa?

Hi,I wanted to use STM32H743 with TFBGA100 package in a new project. Unfortunately this package does not provide Vref+ pin and it is internally tied to Vssa. I don't understand what is the reference source for ADCs and DAC, can I use VREFBUF in hold ...

krom by Associate
  • 1887 Views
  • 3 replies
  • 0 kudos

Resolved! STM32H7B3LIHQ and MX25LM51245GXDI00 OctoSPI flash problem.

Hi.I am using STM32H7B3LIHQ MCU, MX25LM51245GXDI00 OSPI flash, IS42S32800J-6BLI SDRAM and 24bit TFT screen. I used the schematic of the STM32H7B3I-EVAL (MB1331) board when creating the scheme. I wrote programs for FMC, OctoSPI and LTDC peripherals us...

Ekran görüntüsü 2024-05-31 160839.png Ekran görüntüsü 2024-05-31 155348.png Ekran görüntüsü 2024-05-31 155618.png
ABURM by Senior
  • 3674 Views
  • 7 replies
  • 1 kudos

Resolved! STM32L4 Vbat ADC measurement incorrect

I'm using Vbat as a battery voltage monitor on an STM32L431.  Vref is the VDDA pin on this part, which is 3.3V.  In my test case, Vbat is also connected to the same 3.3V.Vbat reads a raw count of around 1044.  The internal divider is /3, so this come...

JBill.10 by Associate III
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  • 1 replies
  • 1 kudos

error: unknown type name 'SPI_HandleTypeDef'

Hi i encounter this error while compiling SPI1 at ST7735.h, i dont understand as this error 'SPI_HandleTypeDef' type was generated by .ioc in main.c already and i had call this statement in ST7735.h. Could anyone kindly help? error: unknown type name...

STM32U031 LPTIM1 not starting with Single Start mode

I am using a STM32U031 part with register level configuration (no Cube libraries). The Timer should be straight forward to start in a single-shot mode but when I set the LPTIM_CR_SNGSTRT flag in the CR register, the CNT register never increments and ...

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