en:arduino:libraries:eepromread
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| + | [[en:arduino:libraries:eeprom|EEPROM]] | ||
| + | ====== read() ====== | ||
| + | |||
| + | ===== Description ===== | ||
| + | |||
| + | Reads a byte from the EEPROM. Locations that have never been written to have the value of 255. | ||
| + | ===== Syntax ===== | ||
| + | |||
| + | EEPROM.read(address) | ||
| + | ===== Parameters ===== | ||
| + | |||
| + | address: the location to read from, starting from 0 (int) | ||
| + | ===== Returns ===== | ||
| + | |||
| + | the value stored in that location (byte) | ||
| + | ===== Example ===== | ||
| + | <code cpp> | ||
| + | #include <EEPROM.h> | ||
| + | |||
| + | int a = 0; | ||
| + | int value; | ||
| + | |||
| + | void setup() | ||
| + | { | ||
| + | Serial.begin(9600); | ||
| + | } | ||
| + | |||
| + | void loop() | ||
| + | { | ||
| + | value = EEPROM.read(a); | ||
| + | |||
| + | Serial.print(a); | ||
| + | Serial.print("\t"); | ||
| + | Serial.print(value); | ||
| + | Serial.println(); | ||
| + | |||
| + | a = a + 1; | ||
| + | |||
| + | if (a == 512) | ||
| + | a = 0; | ||
| + | |||
| + | delay(500); | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | [[en:arduino:libraries|Reference Home]] | ||
en/arduino/libraries/eepromread.txt · 最后更改: 2016/12/25 22:15 (外部编辑)
