void report_matrix()
{
#ifdef DEBUG_SERIAL
    if (reporting_counter++ %100 == 0 ) {
        for (byte row = 0; row < ROWS; row++) {
            for (byte col = 0; col < COLS; col++) {
                Serial.print(matrixState[row][col],HEX);
                Serial.print(", ");

            }
            Serial.println("");
        }
        Serial.println("");
    }
#endif
}

void report(byte row, byte col, boolean value)
{
#ifdef DEBUG_SERIAL
    Serial.print("Detected a change on ");
    Serial.print(col);
    Serial.print(" ");
    Serial.print(row);
    Serial.print(" to ");
    Serial.print(value);
    Serial.println(".");
#endif
}