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char addr_pin[16];
char data_pin[8];
const int clock_pin = 2;
const int rw_pin = 3;
void setup( )
{
for( int i = 0; i < 16; i++ ) {
addr_pin[i] = 52 - i*2;
pinMode( addr_pin[i], INPUT );
}
for( int i = 0; i < 8; i++ ) {
data_pin[i] = 53 - i*2;
pinMode( data_pin[i], INPUT );
}
pinMode( clock_pin, INPUT );
pinMode( rw_pin, INPUT );
attachInterrupt( digitalPinToInterrupt( clock_pin ), onClk, RISING );
Serial.begin( 115200 );
}
void onClk( )
{
unsigned int addr = 0;
for( int i = 0; i < 16; i++ ) {
int b = ( digitalRead( addr_pin[i] ) == HIGH ) ? 1 : 0;
Serial.print( b );
addr = ( addr << 1 ) + b;
}
Serial.print( " " );
unsigned int data = 0;
for( int i = 0; i < 8; i++ ) {
int b = ( digitalRead( data_pin[i] ) == HIGH ) ? 1 : 0;
Serial.print( b );
data = ( data << 1 ) + b;
}
Serial.print( " " );
char rw = ( digitalRead( rw_pin ) == HIGH ) ? 'r' : 'w';
char output[32];
sprintf( output, "%04x %c %02x", addr, rw, data );
Serial.println( output );
}
void loop( )
{
}
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