From: tnp@invalid.invalid   
      
   On 06/05/2025 14:19, Theo wrote:   
   > Andy Burns  wrote:   
   >> the BusPirate folks had issues with their BP5XL boards and needed to   
   >> junk a batch, I see that redesigned as the BP6 it's now on sale ...   
   >   
   > Yes, that's the kind of application where it's a problem.  You attach GPIOs   
   > to random stuff and intend to probe what's there.  That means you flip   
   > through the internal settings for input/output/pullup/pulldown and listen   
   > out to how the input changes.   
   >   
   > The leakage affects that kind of application badly (input pins should be   
   > high impedance but they aren't here) but if you are putting the chip in a   
   > board where you already know what's on the other end of the pin, you can   
   > design the circuit appropriately.   
   >   
   > RPis are more likely to be used in situations where you take the MCU and   
   > plug in and out random things onto the pins which are affected by it,   
   > compared with other MCUs where they only ever get put on vendor PCBs where   
   > everything is predetermined in the schematic.  So it's really a hobbyist   
   > focused problem rather than a wider problem.   
   >   
   > Theo   
   All my Pis end up on my design of PCB where stuff is either disabled or   
   its strictly controlled   
      
   I cant see why anyone would enable an input pin and leave it floating.   
   Its simply bad design   
      
      
   --   
   “It is hard to imagine a more stupid decision or more dangerous way of   
   making decisions than by putting those decisions in the hands of people   
   who pay no price for being wrong.”   
      
   Thomas Sowell   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)