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https://github.com/RobTillaart/I2C_EEPROM.git
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Rob TillaartandGitHub
86a5017fa9
- fix #83, update readme.md (thanks to TonyRiddiough) - add calculatePageSize(deviceSize) to replace getPageSize(deviceSize) prep. - update GitHub actions - minor update examples - minor edits
151 lines
2.9 KiB
Arduino
151 lines
2.9 KiB
Arduino
//
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// FILE: I2C_eeprom_updateBlock.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo I2C_EEPROM library - performance gain updateBlock
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// URL: https://github.com/RobTillaart/I2C_EEPROM
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//
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// uses a 24LC256 (32KB) EEPROM
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// as this test writes a lot it might wear out EEPROMs eventually.
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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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uint8_t ar[100];
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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();
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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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Serial.println();
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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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for (int i = 0; i < 100; i++) ar[i] = 100 - i;
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for (int i = 1; i < 11; i++)
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{
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test_1(i);
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}
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test_2();
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Serial.println("\ndone...");
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}
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void loop()
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{
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}
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void test_1(int n)
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{
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Serial.println(n);
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Serial.print("TEST:\twriteBlock()");
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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 < n; i++) ee.writeBlock(0, ar, 100);
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dur1 = micros() - start;
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Serial.print("\t");
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Serial.println(dur1);
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delay(10);
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Serial.print("TEST:\treadBlock()");
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delay(10);
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start = micros();
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for (int i = 0; i < n; i++) ee.readBlock(0, ar, 100);
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dur1 = micros() - start;
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Serial.print("\t");
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Serial.println(dur1);
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delay(10);
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Serial.print("TEST:\tupdateBlock()");
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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 < n; i++) ee.updateBlock(0, ar, 100);
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dur1 = micros() - start;
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Serial.print("\t");
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Serial.println(dur1);
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delay(10);
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Serial.println();
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}
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void test_2()
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{
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Serial.println("\nTEST: 100x writeBlock()");
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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.writeBlock(0, ar, 100);
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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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dump(0, 100);
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delay(100);
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Serial.println("\nTEST: 100x updateBlock()");
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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.updateBlock(0, ar, 100);
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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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dump(0, 100);
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delay(100);
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}
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void dump(uint32_t from, uint32_t to)
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{
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for (uint32_t i = from; i < to; i++) // I2C_DEVICESIZE_24LC512
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{
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char buffer[24];
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if (i % 16 == 0)
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{
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char buffer[24];
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Serial.print('\n');
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#if defined (ESP8266) || defined(ESP32)
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sprintf(buffer, "%08X\t", i); // ESP cast (long unsigned int)
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#else
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sprintf(buffer, "%08lX\t", i); // AVR needs lX
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#endif;
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Serial.print(buffer);
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}
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sprintf(buffer, "%02X\t", ee.readByte(i));
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Serial.print(buffer);
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}
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Serial.println();
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}
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// -- END OF FILE --
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