From: tnp@invalid.invalid   
      
   On 12/02/2026 21:36, rbowman wrote:   
   > On Thu, 12 Feb 2026 01:04:33 -0500, c186282 wrote:   
   >   
   >>     Interrupts are very important for buttons and some sensors !   
   >>     Otherwise you have to waste vast CPU *polling*.   
   >   
   > It all depends. Interrupts add complexity. For many applications the CPU   
   > doesn't have anything better to do than poll.   
      
   Exactly.   
     In many cases it is in essence the foreground task anyway - the   
   background data processing being done in real time under interrupts   
      
   Tale say audio processing. You are running processing code at 48KHz, and   
   its time critical.   
      
   Reading the buttons  and knobs can be done far far slower   
      
      
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