In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mikegann wrote:

Hi Mike - 
 

I haven't looked at your updated code but......

 

Did you notice the irq pin of the MAX3100 is an open-drain output and needs a pull up resistor?

I overlooked that detail at first and it took me awhile to figure out why my code which looked right wasn't worklng.

 

Best regards,

 

Mike

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