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migmel · 2023-04-24

Hello guys, I am working with an STM32L071CBT6 MCU. I want to have a cycle of 10 minutes, where MCU works for 1 minute before entering to standby mode during 9 minute.Using RTC, I want to have an interrupt every 1 minute(60 s); but I don't want the ...

migmel · 2023-03-22

Hello guys,I have adapted this example from repository to work with a STM32L071CB:STM32Cube\Repository\STM32Cube_FW_L0_V1.12.2\Projects\NUCLEO-L073RZ\Examples_LL\ADC\ADC_SingleConversion_TriggerSW_DMAIt works fine until I want to add RTC and select L...

migmel · 2023-02-07

Hello,I have a question: I want to use the backup registers to recover data after waking up from standby. Is it possible using it without setting up RTC or are they bound to RTC ?If they are related and setting up RTC is mandatory prior to use the re...

migmel · 2023-01-03

Hello guys,This is a silly question, but still cannot get it right.I want to read different values coming from sensors connected to different ports.I know using 16 available channels for external input is very intuitive when all the inputs come from ...

migmel · 2022-10-03

Hello guys,First of all I want to say that I don't like and don't use HAL library. Use LL_Library instead as long as possible.Now what brings me here is that currently I am manually porting FreeRTOS to an STM32469NI MCU. This force me to use a differ...

migmel · 2023-05-08

I have found a solution. I will share it here in case anybody have a similar case:The main problem was that I only had an LSE crystal, which is used for RTC, but for the rest of timers I had to use inaccurate internal clock source HSI because the lac...

migmel · 2023-05-03

Thank you again,I have used WKUP to wake up MCU. So, I can used RTC interrupts freely without worry about wake up the MCU when I don't mean to. One question remains, how can I set an RTC periodic interrupt, lets say every 30 s, without using any EXT ...

migmel · 2023-04-28

Hello miss Diane, thank you for your reply.I have separately done the standby/wakeup cycle with RTC and generated interrupts using another timer(TIM6, which use HSI as clock source). However, in this way, TIM6 lacks of the accuracy and precision I n...

migmel · 2023-03-23

Thank you for your reply,I think the LSE might be malfunctioningI will do what you've suggested

migmel · 2023-02-09

This link you shared was usefulThank you

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How to generate an interrupt at an F1 frequency and wakeup MCU at a different F2 lower frequency with RTC

Cannot make ADC example working with RTC when using LSE crystal source

How to use backup registers without setting up RTC ?

How to do multiple ADC conversions if pins belonging to different ports

How to avoid HAL_Init() when using a timer other than Systick

Re: How to generate an interrupt at an F1 frequency and wakeup MCU at a different F2 lower frequency with RTC

Re: How to generate an interrupt at an F1 frequency and wakeup MCU at a different F2 lower frequency with RTC

Re: How to generate an interrupt at an F1 frequency and wakeup MCU at a different F2 lower frequency with RTC

Re: Cannot make ADC example working with RTC when using LSE crystal source

Re: How to use backup registers without setting up RTC ?