vault backup: 2025-01-22 00:11:53

.trash/NodeMCU Test SD Card, Door & ....md

@@ -0,0 +1,132 @@
+  
+  
+
+#include <SPI.h>
+
+#include <SD.h>
+
+  
+
+File myFile;
+
+  
+
+void setup() {
+
+  // Open serial communications and wait for port to open:
+
+  Serial.begin(9600);
+
+  
+
+  Serial.print("Initializing SD card...");
+
+  
+
+  if (!SD.begin(15)) {
+
+    Serial.println("initialization failed!");
+
+    return;
+
+  }
+
+  Serial.println("initialization done.");
+
+  
+
+  // open the file. note that only one file can be open at a time,
+
+  // so you have to close this one before opening another.
+
+  myFile = SD.open("test.txt", FILE_WRITE);
+
+  Serial.print("asfd");
+
+  // if the file opened okay, write to it:
+
+  if (myFile) {
+
+    Serial.print("Writing to test.txt...");
+
+    myFile.println("testing 1, 2, 3.");
+
+    // close the file:
+
+    myFile.close();
+
+    Serial.println("done.");
+
+  } else {
+
+    // if the file didn't open, print an error:
+
+    Serial.println("error opening test.txt");
+
+  }
+
+  Serial.print("asfd1");
+
+  
+
+  // re-open the file for reading:
+
+  myFile = SD.open("test.txt");
+
+  if (myFile) {
+
+    Serial.println("test.txt:");
+
+  
+
+    // read from the file until there's nothing else in it:
+
+    while (myFile.available()) {
+
+      Serial.write("1 - ");
+
+      Serial.write(myFile.read());
+
+    }
+
+    // close the file:
+
+    myFile.close();
+
+  } else {
+
+    // if the file didn't open, print an error:
+
+    Serial.println("error opening test.txt");
+
+  }
+
+    Serial.print("asfd2");
+
+  
+
+  pinMode(D4, INPUT);
+
+}
+
+  
+
+void loop() {
+
+  byte val = digitalRead(D4);
+
+  if (val == HIGH) {
+
+    Serial.println("Closed");
+
+  } else {
+
+    Serial.println("Open");
+
+  }
+
+  
+
+  delay(500);
+
+}