State 1: The input signal 24V changes to 0V-----the output is required to change from 1 to 0;
State 2: The input signal changes from 0V to 10mV-----the output is required to change from 0 to 1;I am no
I used arm7 and piml modules, burned a simple MCU program to test that everything was normal, indicating that there was no problem with the hardware. However, after I used uClinux, the connection inst