Update firmware updaters for Nano33IoT

Author: facchinm

examples/Tools/FirmwareUpdater/ESP32BootROM.cpp

@@ -79,6 +79,10 @@ int ESP32BootROMClass::begin(unsigned long baudrate)
   delay(10);
   digitalWrite(_resetnPin, LOW);
   delay(100);
+#if defined(ARDUINO_SAMD_NANO_33_IOT)
+  digitalWrite(_resetnPin, HIGH);
+  delay(100);
+#endif
 #endif
 
   int synced = 0;

examples/Tools/SerialNINAPassthrough/SerialNINAPassthrough.ino

@@ -64,6 +64,8 @@ void loop() {
   if (rts != Serial.rts()) {
 #ifdef ARDUINO_SAMD_MKRVIDOR4000
     FPGA.digitalWrite(FPGA_SPIWIFI_RESET, (Serial.rts() == 1) ? LOW : HIGH);
+#elif defined(ARDUINO_SAMD_NANO_33_IOT)
+    digitalWrite(NINA_RESETN, Serial.rts() ? LOW : HIGH);
 #else
     digitalWrite(NINA_RESETN, Serial.rts());
 #endif