diff options
author | David A. Mellis <d.mellis@arduino.cc> | 2007-10-06 13:04:46 +0000 |
---|---|---|
committer | David A. Mellis <d.mellis@arduino.cc> | 2007-10-06 13:04:46 +0000 |
commit | 9e48dfc4fd53a2bc53367568077fbea44f88eda2 (patch) | |
tree | 356854e8239e0f0676bcf6105b7ea6a53cb9a880 /libraries/EEPROM/examples | |
parent | 179fcdbda432ff33a921a70994087b08b2a79caa (diff) |
Moving libraries out from inside targets and creating bootloaders directory.
Diffstat (limited to 'libraries/EEPROM/examples')
3 files changed, 97 insertions, 0 deletions
diff --git a/libraries/EEPROM/examples/eeprom_clear/eeprom_clear.pde b/libraries/EEPROM/examples/eeprom_clear/eeprom_clear.pde new file mode 100644 index 0000000..36af68e --- /dev/null +++ b/libraries/EEPROM/examples/eeprom_clear/eeprom_clear.pde @@ -0,0 +1,21 @@ +/* + * EEPROM Clear + * + * Sets all of the bytes of the EEPROM to 0. + */ + +#include <EEPROM.h> + +void setup() +{ + // write a 0 to all 512 bytes of the EEPROM + for (int i = 0; i < 512; i++) + EEPROM.write(i, 0); + + // turn the LED on when we're done + digitalWrite(13, HIGH); +} + +void loop() +{ +} diff --git a/libraries/EEPROM/examples/eeprom_read/eeprom_read.pde b/libraries/EEPROM/examples/eeprom_read/eeprom_read.pde new file mode 100644 index 0000000..2e30708 --- /dev/null +++ b/libraries/EEPROM/examples/eeprom_read/eeprom_read.pde @@ -0,0 +1,38 @@ +/* + * EEPROM Read + * + * Reads the value of each byte of the EEPROM and prints it + * to the computer. + */ + +#include <EEPROM.h> + +// start reading from the first byte (address 0) of the EEPROM +int address = 0; +byte value; + +void setup() +{ + Serial.begin(9600); +} + +void loop() +{ + // read a byte from the current address of the EEPROM + value = EEPROM.read(address); + + Serial.print(address); + Serial.print("\t"); + Serial.print(value, DEC); + Serial.println(); + + // advance to the next address of the EEPROM + address = address + 1; + + // there are only 512 bytes of EEPROM, from 0 to 511, so if we're + // on address 512, wrap around to address 0 + if (address == 512) + address = 0; + + delay(500); +} diff --git a/libraries/EEPROM/examples/eeprom_write/eeprom_write.pde b/libraries/EEPROM/examples/eeprom_write/eeprom_write.pde new file mode 100644 index 0000000..ae7c57e --- /dev/null +++ b/libraries/EEPROM/examples/eeprom_write/eeprom_write.pde @@ -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); +} |