Any easy and affortable way to do ‘reference’ EMC test?
Time ago, I was told to place a gas cooker lighter that generates 5mm spark in air at certain distance from the device and see if it run into error or hang up.
Our current design has metal can over MCU.
Should un-used GPIO pin be outputting zero. Will it use more current than setting as input with internal pull up or down? Few uA is esential for months on battery.