Arduino for STM32

mebab did you find a solution to this? I was wondering whether you are measuring the current directly at the ArduCAM pin? I'm thinking, perhaps you have current flowing through the I2C pins (or some of the SPI pins). Although you have turned-off the supply, I'm guessing the pull-ups of teh I2C pins ...

GonzoG wrote: Thu Nov 04, 2021 10:35 pm Internal Vref cannot be used as ADC reference. You can use it only as reference to measure (calibrate) ADC Vref.

Unfortunately that's true yes, now that you wrote it, I realize this is true. Thanks for pointing it out for me...

STM32L432.JPG

Hm... yes, I have seen this. I know it, but I don't understand what you mean.

Does that simply mean that I can't use VREFINT as the reference for the ADC conversions? I don't want to read / measure this voltage through the ADC, but to use it as the reference for the conversions ...

I have a small update to this problem. I realized that most of the current consumption was created by the 4 UART pins that were connected to my satellite and GPS modules. By ensuring no current flows through those pins took me far. But I also had to do something more: I had to remove SB2 and SB3 ...

Hi,

I am using an STM32L432KC (on a NUCLEO-32 board) in my project and I need to monitor the battery voltage, which I am doing by hooking up a voltage divider to the ADC. After quite some time spent understanding why the voltage read by the MCU didn't correspond to what I saw with the multimeter, I ...

May I ask which application note you are referring to?

But it's also about the current consumption under normal operation. The 16mA is a bit higher than expected, since I'm only using (or put it differently, my application only needs) one hardware USART, one software UART and the ADC.

Hi,

I'm using a the STM32L412KB board in a project, and one of the reasons I picked it is due to its low current consumption.

But then I did some measurements and found out that the consumption is much higher than expected: approximately 16 mA in operation and 600 uA in deep sleep (using the ...