aboutsummaryrefslogtreecommitdiff
path: root/libraries/EEPROM/examples/eeprom_write
diff options
context:
space:
mode:
authorCristian Maglie <c.maglie@bug.st>2013-11-21 11:19:08 +0100
committerCristian Maglie <c.maglie@bug.st>2013-11-21 11:22:44 +0100
commit0dcd4b220904574d674421af6f443adc9b99946a (patch)
tree61156480d2e2b8d8d266db24e6130e3a2b9be7d5 /libraries/EEPROM/examples/eeprom_write
parenta5d1990afdd4d783b4623e4ced8833d3e1a764ae (diff)
Revert "EEPROM library to the new format"
This reverts commits: 3223d4fdca32ec03de4a3a2a0c22f2d40de5f374 77f8dd63ab102ab5d2929ac4edd5c00ae9d70493
Diffstat (limited to 'libraries/EEPROM/examples/eeprom_write')
-rw-r--r--libraries/EEPROM/examples/eeprom_write/eeprom_write.ino38
1 files changed, 38 insertions, 0 deletions
diff --git a/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino b/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
new file mode 100644
index 0000000..c047887
--- /dev/null
+++ b/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
@@ -0,0 +1,38 @@
+/*
+ * EEPROM Write
+ *
+ * Stores values read from analog input 0 into the EEPROM.
+ * These values will stay in the EEPROM when the board is
+ * turned off and may be retrieved later by another sketch.
+ */
+
+#include <EEPROM.h>
+
+// the current address in the EEPROM (i.e. which byte
+// we're going to write to next)
+int addr = 0;
+
+void setup()
+{
+}
+
+void loop()
+{
+ // 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);
+}