About N.F. Singh

N.F. Singh · 2021-04-11

Documentation is a bit vague with respect to use of PC13/14/15 as GPIO while MCU is in SHUTDOWN mode. My understanding is that these pins can be used in the backup domain (my VBAT is connected directly to VDD).I understand that I could SINK up to 3mA...

N.F. Singh · 2021-04-05

I've read through the datasheet and reference manual for STM32L451REI and have been trying to nail down some definitive answers for GPIO behavior upon SHUTDOWN mode. I can't seem to find them, so I'll ask here.In SHUTDOWN MODE:are pullups/pulldowns f...

N.F. Singh · 2020-03-02

Having a very difficult time figuring out what happened to STM32CubeMX. In middle of very timely development and suddenly I can't generate any code. It just hangs. I have to shut down Java to force the program to close.I have downloaded the latest ve...

N.F. Singh · 2020-01-10

I'm able to configure LPUART1 fine and have been communicating on it. However, for the life of me I can't find the way to enable RX/TX interrupts via CubeMX. I'd rather use the UI if I can. Please see the screenshot attached. As you can see, I have L...

N.F. Singh · 2019-06-16

I'm running STM32L072RZ and am running into weirdness with the EEPROM. I'm using the Cube32MX HAL library so I can avoid any potential issues. Below is my routine. Sometimes it runs just fine. Other times, it crashes my debug session and doesn't even...

N.F. Singh · 2021-04-13

Thanks for the reply. It says right there in my copy/paste that when the VBAT is supplied by VDD, the backup domain allows use of PC13/14/15 as general GPIO.And per the document I don't think you can SOURCE current from those pins. Only sink.But my q...

User statistics

User Activity

STM32L451 and PC13/14/15 in SHUTDOWN Mode

STM32L4 GPIO Behavior on Shutdown

STM32CubeMX Crashing on Code Generation

Can't enable interrupt for LPUART1 using STM32CubeMX (for STM32L072)

EEPROM Erase/Writes w/ HAL very inconsistent

Re: STM32L451 and PC13/14/15 in SHUTDOWN Mode