STM32 MCUs Boards and hardware tools

Ask questions and find answers on STM32 hardware set-ups, including schematic-related challenges, debugging probes, power configurations, and more.

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Resolved! B-L475E-IOT01A2 does not emulate STlink V2 upon power on, but red and green LED are present

HiI am a little bit lost on this particular discovery board. I connect it via CN7 (STLink V2 connector), and jumper settings are as supposed. The user guide says that LD6 should be red, and LD5 should be green. LD6 blinks red, and LD5 is constantly g...

AAnth.1 by Senior
  • 1018 Views
  • 2 replies
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STM32F401 won't start

I have a 3x4 matrix keyboard attached to STM32F401, see schematics (the U4 represents a "black pill" PCB). PB0, PB1, PB2 are column outputs in push-pull mode. PC15, PA0, PA1, PB10 are row inputs in EXTI mode with pull-ups enabled.The circuit worked a...

MZadn.2 by Associate II
  • 1492 Views
  • 3 replies
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Why do newer STLINK V2/ISOL display a lower voltage than older ones?' Why does new hardware look different and works different

We have already received 2 deliveries of STLINK V2/ISOL from well-known suppliers, which display a lower voltage and also partly do not work with our products.Unfortunately, we have not yet received an answer from support and currently do not know ho...

TDamm.1 by Associate II
  • 2717 Views
  • 6 replies
  • 1 kudos