[table][tr][td][size=14pt][sub]Code:[/sub][/size][hr][/td][/tr][tr][td][size=9pt][tt]#include <EEPROM.h>
#include <avr/pgmspace.h>
void testEEPROM() {
uint8_t data[100];
for (int i = 0; i < 100; i++) data[i] = i;
unsigned long startWrite = micros();
for (int i = 0; i < 100; i++) EEPROM.write(i, data[i]);
unsigned long endWrite = micros();
unsigned long startRead = micros();
for (int i = 0; i < 100; i++) volatile byte x = EEPROM.read(i);
unsigned long endRead = micros();
Serial.print("EEPROM Write Time: "); Serial.println(endWrite - startWrite);
Serial.print("EEPROM Read Time: "); Serial.println(endRead - startRead);
}
void testSRAM() {
uint8_t ramArray[100];
unsigned long startWrite = micros();
for (int i = 0; i < 100; i++) ramArray[i] = i;
unsigned long endWrite = micros();
unsigned long startRead = micros();
for (int i = 0; i < 100; i++) volatile byte x = ramArray[i];
unsigned long endRead = micros();
Serial.print("SRAM Write Time: "); Serial.println(endWrite - startWrite);
Serial.print("SRAM Read Time: "); Serial.println(endRead - startRead);
}
void testSerial() {
uint8_t data[100];
for (int i = 0; i < 100; i++) data[i] = i;
unsigned long startWrite = micros();
for (int i = 0; i < 100; i++) Serial.write(data[i]);
unsigned long endWrite = micros();
Serial.println();
Serial.print("Serial Write Time (100 bytes): ");
Serial.println(endWrite - startWrite);
}
const uint8_t romData[100] PROGMEM = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
90, 91, 92, 93, 94, 95, 96, 97, 98, 99
};
void testROM() {
unsigned long startRead = micros();
for (int i = 0; i < 100; i++) {
volatile byte val = pgm_read_byte(&(romData[i]));
}
unsigned long endRead = micros();
Serial.print("ROM Read Time: "); Serial.println(endRead - startRead);
}
void [b]setup/b {
Serial.begin(9600);
delay(2000); // Wait for Serial to open
testEEPROM();
delay(1000);
testSRAM();
delay(1000);
testSerial();
delay(1000);
testROM();
}
void [b]loop/b {
// Nothing here
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