Serial and eeprom

[sketchbook_andrea] / advanced_projects / eeprom_1_write_read / eeprom_1_write_read.ino

diff --git a/advanced_projects/eeprom_1_write_read/eeprom_1_write_read.ino b/advanced_projects/eeprom_1_write_read/eeprom_1_write_read.ino
new file mode 100644 (file)
index 0000000..55d051e
--- /dev/null
+++ b/advanced_projects/eeprom_1_write_read/eeprom_1_write_read.ino
@@ -0,0 +1,46 @@
+/*
+  EEPROM 
+ 
+ Storaggio di un valore e sucessiva lettura.
+ */
+
+#include <EEPROM.h>
+
+// the current address in the EEPROM (i.e. which byte
+// we're going to write to next)
+int addr = 12;
+
+void setup()
+{ 
+  Serial.begin(9600);
+  Serial.println("Storaggio valore");
+  // EEPROM.write(addr, 124); 
+  // Eseguire una volta sola, caricare lo sketch
+  // e immediatamente commetare e ripetere l'upload.
+}
+
+void loop()
+{
+  Serial.print("Lettura Valore: ");
+  Serial.println(EEPROM.read(12)); 
+  Serial.flush();
+  exit(0) ;
+  // need to divide by 4 because analog inputs range from
+  // 0 to 1023 and each byte of the EEPROM can only hold a
+  // value from 0 to 255.
+  int val = analogRead(0) / 4;
+
+  // write the value to the appropriate byte of the EEPROM.
+  // these values will remain there when the board is
+  // turned off.
+  EEPROM.write(addr, val);
+
+  // advance to the next address.  there are 512 bytes in 
+  // the EEPROM, so go back to 0 when we hit 512.
+  addr = addr + 1;
+  if (addr == 512)
+    addr = 0;
+
+  delay(100);
+}
+