About gianmarco.cerutti

gianmarco.cerutti · 2024-05-21

Hello,I'm developing an application on the NUCLEO-U5A5ZJ-Q. I need some pins to stay high while the microcontroller is in Stop3 mode.The Datasheet suggests to use internal pull ups, because the GPIO peripheral is not active in Stop3 mode. For this re...

gianmarco.cerutti · 2023-08-24

Hello,For efficiency reason I need to use only the LL, so I enable the LL flag in the CUBEMX configuration.I would like to have the ISR defined as __weak, so that I can write my own version without replacing manually the ISR.I know that using HAL dri...

gianmarco.cerutti · 2024-05-22

Thank you for your answer.Yes the problem was not configuring the Pull Up through the PWR_PUCRx register but through the GPIO peripheral.I write here a snippet of code that worked for me. SET_BIT(PWR->APCR, PWR_APCR_APC); HAL_PWREx_EnableGPIOPullUp...

gianmarco.cerutti · 2023-08-24

Thank you so much for the detailed answer, it helped me a lot to understand the HAL vs LL mechanism in generating the ISR functions

gianmarco.cerutti · 2023-08-24

Thank you Pavel A. for you answer. In my situation, it is better to disable the ISR generation from CUBEMX and write my own version. In this case I don't need the weak definition, there is just no other definition other than mine.

gianmarco.cerutti · 2023-08-24

Thank you very much for your answer.I see that the startup files has the weak attribute. However, CUBE generates automatically the handlers functions in the stm32l0xx.c file. These are not __weak, therefore as soon as I try to specify my own handler ...

User statistics

User Activity

GPIO going to zero in STOP3 Mode even if connected with internal pull-up STM32U5A5

Define ISR as weak using CubeMX LL Drivers

Re: GPIO going to zero in STOP3 Mode even if connected with internal pull-up STM32U5A5

Re: Define ISR as weak using CubeMX LL Drivers

Re: Define ISR as weak using CubeMX LL Drivers

Re: Define ISR as weak using CubeMX LL Drivers