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Forum Posts

Question regarding hardware state and debug in stop mode

Posted on July 11, 2018 at 01:56Hi,I am currently writing a program for the part STM32L031F6.  I am using StopMode to put the uController to sleep.I have a couple of questions I was wonder if you could help.1. When waking up from stop mode, do I nee...

Vu.Andy by Associate III
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HAL_SPI_Transmit/HAL_SPI_TransmitReceive timeout

Posted on July 11, 2018 at 20:13Hi,I used to have the SPI1 working connected to MAX31865 breakout board. For some reason it's not working at all now. I traced into the code, seems HAL_SPI_Transmit() failed on __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_TXE) u...

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Trouble entering STOP2 on stm32l432

Posted on July 09, 2018 at 15:06I'm having trouble entering stop2 -- instead of going to stop2 my code seems to enter sleep; this is based upon measuring power levels -- I have the RTC fed by an external crystal and a 1 second interval alarm.  I can...

Geoffrey1 by Associate III
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VBAT for RTC backup

Posted on October 10, 2016 at 13:12Hello, should i connect 3V battery to Vss or Vssa for RTC backup (external 32768 resonator)? #too-vague #stm32-vbat-rtc

mailbox by Associate II
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EXTI9_5_IRQHandler missing in CubeMX H743i_Eval Build

Posted on July 07, 2018 at 01:39Trying to figure out reasons why a CubeMX build cannot replicate the functionality of the repo application:STM32Cube\Repository\STM32Cube_FW_H7_V1.2.0\Projects\STM32H743I_EVAL\Applications\FatFs\FatFs_uSD_DMA_RTOS.The...

external gram / vram / videoram - any experience?

Posted on July 06, 2018 at 15:50Hello,we are running a stm32f49xxx mcu with sdram which is used as a video ram.now with higher product lines we have more traffic on the memory bus causing flickering. With code optimization we can reduce it but it ap...