mirror of
https://github.com/RobTillaart/I2C_EEPROM.git
synced 2026-07-27 20:06:07 +00:00
Rob TillaartandGitHub
ff21bd6cdc
- simplify **begin()**, remove setting Wire pins from library. - add **getAddress()** - update readme.md - update examples
89 lines
1.6 KiB
Arduino
89 lines
1.6 KiB
Arduino
//
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// FILE: I2C_eeprom_update.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo I2C_EEPROM library - updateByte
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//
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// uses a 24LC256 (32KB) EEPROM
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#include "Wire.h"
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#include "I2C_eeprom.h"
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I2C_eeprom ee(0x50, I2C_DEVICESIZE_24LC256);
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uint32_t start, dur1, dur2;
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void setup()
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{
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Serial.begin(115200);
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while (!Serial); // wait for Serial port to connect. Needed for Leonardo only
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Serial.println(__FILE__);
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Serial.print("I2C_EEPROM_VERSION: ");
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Serial.println(I2C_EEPROM_VERSION);
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Wire.begin();
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ee.begin();
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if (! ee.isConnected())
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{
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Serial.println("ERROR: Can't find eeprom\nstopped...");
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while (1);
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}
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Serial.println("\nTEST: determine size");
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uint32_t size = ee.determineSize();
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if (size > 0)
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{
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Serial.print("SIZE: ");
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Serial.print(size);
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Serial.println(" KB");
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}
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else if (size == 0)
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{
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Serial.println("WARNING: Can't determine eeprom size");
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}
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else
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{
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Serial.println("ERROR: Can't find eeprom\nstopped...");
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while(1);
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}
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Serial.println("\nTEST: 100x writebyte()");
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delay(10);
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ee.setBlock(0, 0, 100); // clear first 100 bytes
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start = micros();
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for (int i = 0; i < 100; i++)
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{
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ee.writeByte(i, 0);
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}
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dur1 = micros() - start;
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Serial.print("DUR1: ");
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Serial.println(dur1);
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delay(10);
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Serial.println("\nTEST: 100x updateByte()");
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ee.setBlock(0, 0, 100); // clear first 100 bytes
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start = micros();
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for (int i = 0; i < 100; i++)
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{
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ee.updateByte(i, 0);
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}
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dur2 = micros() - start;
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Serial.print("DUR2: ");
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Serial.println(dur2);
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delay(10);
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Serial.println("done...");
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}
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void loop()
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{
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}
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// -- END OF FILE --
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