As picture,This is the external circuit of 52832, and I've drawn out P0.09,P0.10,P0.17,P0.18,P0.19,P0.22 of these six gpios, each of them for control purposes, and now P2 has nothing attached to it, it's suspended.In the program, I set up these 6 gpios, every 1000ms, toggle them,then I used a multimeter to measure the voltage at each IO port.It was found that only P0.17,P0.18,P0.19 and P0.22 pins had voltage values changing from 3.0v to 0V, and from 0V to 3.0v,the P0.09 and P0.10 pins have never changed the overvoltage value. They are always active below 0.2v and have never reached 1v or higher 3V.
Excuse me, why is this so weird?
