Validate MCP port expander logic

Add poll once on start to have accurate information on webpage

pins.cpp

@@ -39,7 +39,7 @@ void isr_check_loop()
     Serial.print(regval, BIN);
 
     uint8_t mask = 1 << 0;
-    if ((regval & mask)) {
+    if (!(regval & mask)) {
       Serial.print(" UPS");
       PINS.ups = true;
     }
@@ -71,7 +71,7 @@ void poll_port_expander()
     int regval = MCP.read8();
     
     uint8_t mask = 1 << 0;
-    if ((regval & mask)) {
+    if (!(regval & mask)) {
       Serial.print(" UPS");
       PINS.ups = true;
     }