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Forum Posts

STlink utility upgrade crashed

Posted on July 12, 2018 at 11:32I have an old version of the st link utility and I have to upgrade it in order to program new STM32H7xx devices.Removing the old version with the windows tool crashed.Installing the new one crash again : 1/ 'Setup cou...

tarzan2 by Associate III
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LOW POWER RUN MODE?

Posted on July 12, 2018 at 10:35I am beginner in stm32 i have configured 3 external interrupt and rtc alarm ,lptimerhow to enter the low power run mode.exit when one of the interrupt signal received and  rtc alaram 

Why is LSE limited to 1MHz?

Posted on July 09, 2018 at 18:19Hi everyone,going through the datasheets of STM32L4x1 processors (probably concerns further processors as well) I found that LSE is always limited to 1MHz but my question is what limits it, i.e. can I use LSE > 1MHz i...

STM32L451 strange RTC issue

Posted on July 11, 2018 at 17:03I'm curious if anyone else has seen this issue.We are using 20 ppm LSE at 32768hz as the clock source for our RTC.  Over an 8 hour period, we are a few seconds off vs. the expected max of .6 S for the 20 ppm.Our syste...

mhage by Associate II
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  • 3 replies
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4 bit SDIO doesn't work although 1 bit SDIO works SDCARD

Posted on January 18, 2018 at 14:37 Hey everyone, I have a quick question concerning the 4 bit sdio sdcard implementation. The 1 bit sdio seems to work perfectly. I have absolutely no issues, although when implementing 4 bit it completely bugs ou...

con3 by Senior
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  • 15 replies
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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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  • 2 replies
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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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  • 1 replies
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