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王立帮
2024-07-20 22:09:06 +08:00
commit c247dd07a6
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arduino-cli/libraries/AT24Cx/AT24CX_demo/AT24CX_demo.ino Normal file
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/*
*
* Read and write demo of the AT24CX library
* Written by Christian Paul, 2014-11-24
*
*
*/
// include libraries
#include <Wire.h>
#include <AT24CX.h>
// EEPROM object
AT24CX mem(7,64);
// setup
void setup() {
// serial init
Serial.begin(115200);
Serial.println("AT24CX read/write demo");
Serial.println("----------------------");
}
// main loop
void loop() {
// read and write byte
Serial.println("Write 42 to address 12");
mem.write(0, 42);
Serial.println("Read byte from address 12 ...");
byte b = mem.read(0);
Serial.print("... read: ");
Serial.println(b, DEC);
Serial.println();
// read and write integer
Serial.println("Write 65000 to address 15");
mem.writeInt(15, 65000);
Serial.println("Read integer from address 15 ...");
unsigned int i = mem.readInt(15);
Serial.print("... read: ");
Serial.println(i, DEC);
Serial.println();
// read and write long
Serial.println("Write 3293732729 to address 20");
mem.writeLong(20, 3293732729UL);
Serial.println("Read long from address 20 ...");
unsigned long l = mem.readLong(20);
Serial.print("... read: ");
Serial.println(l, DEC);
Serial.println();
// read and write long
Serial.println("Write 1111111111 to address 31");
mem.writeLong(31, 1111111111);
Serial.println("Read long from address 31 ...");
unsigned long l2 = mem.readLong(31);
Serial.print("... read: ");
Serial.println(l2, DEC);
Serial.println();
// read and write float
Serial.println("Write 3.14 to address 40");
mem.writeFloat(40, 3.14);
Serial.println("Read float from address 40 ...");
float f = mem.readFloat(40);
Serial.print("... read: ");
Serial.println(f, DEC);
Serial.println();
// read and write double
Serial.println("Write 3.14159265359 to address 50");
mem.writeDouble(50, 3.14159265359);
Serial.println("Read double from address 50 ...");
double d = mem.readDouble(50);
Serial.print("... read: ");
Serial.println(d, DEC);
Serial.println();
// read and write char
Serial.print("Write chars: '");
char msg[] = "This is a message";
Serial.print(msg);
Serial.println("' to address 200");
mem.writeChars(200, msg, sizeof(msg));
Serial.println("Read chars from address 200 ...");
char msg2[30];
mem.readChars(200, msg2, sizeof(msg2));
Serial.print("... read: '");
Serial.print(msg2);
Serial.println("'");
Serial.println();
// write array of bytes
Serial.println("Write array of 80 bytes at address 1000");
byte xy[] = {0,0,0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,9, // 10 x 3 = 30
10,11,12,13,14,15,16,17,18,19, // 10
120,121,122,123,124,125,126,127,128,129, // 10
130,131,132,133,134,135,136,137,138,139, // 10
200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219}; // 20
mem.write(0, (byte*)xy, sizeof(xy));
// read bytes with multiple steps
Serial.println("Read 80 single bytes starting at address 0");
for (int i=0; i<sizeof(xy); i++) {
byte sb = mem.read(i);
Serial.print("[");
Serial.print(i);
Serial.print("] = ");
Serial.println(sb);
}
Serial.println();
// read bytes with one step
Serial.println("Read 80 bytes with one operation at address 0");
byte z[80];
memset(&z[0], 32, sizeof(z));
mem.read(0, z, sizeof(z));
for (int i=0; i<sizeof(z); i++) {
Serial.print("[");
Serial.print(i);
Serial.print("] = ");
Serial.println(z[i]);
}
/*
Serial.println("Write 42 to address 12");
mem.write(32769, 100);
Serial.println("Read byte from address 12 ...");
byte b = mem.read(1);
Serial.print("... read: ");
Serial.println(b, DEC);
Serial.println();
*/
/*
double time_data = millis();
for(int i = 0;i <= 256;i++)
mem.write(i, i%255);
//Serial.println(String(i)+String(" = ")+mem.read(i));
time_data = (millis() - time_data)/1000;
Serial.println(String("finish! time = ") + time_data + String("S"));
Serial.println("Write 3293732729 to address 20");
mem.writeLong(20, 3293732729UL);
Serial.println("Read long from address 20 ...");
unsigned long l = mem.readLong(20);
Serial.print("... read: ");
Serial.println(l, DEC);
Serial.println();
for(int i = 0;i <= 256;i++)
Serial.println(String(i)+String(" = ")+mem.read(i));
//
Serial.println("Write array of 80 bytes at address 1000");
byte xy[] = {0,0,0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,9, // 10 x 3 = 30
10,11,12,13,14,15,16,17,18,19, // 10
120,121,122,123,124,125,126,127,128,129, // 10
130,131,132,133,134,135,136,137,138,139, // 10
200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219}; // 20
mem.write(0, (byte*)xy, sizeof(xy));
// read bytes with multiple steps
Serial.println("Read 80 single bytes starting at address 0");
for (int i=0; i<sizeof(xy); i++) {
byte sb = mem.read(i);
Serial.print("[");
Serial.print(i);
Serial.print("] = ");
Serial.println(sb);
}
for(int i = 0;i <= 256;i++)
Serial.println(String(i)+String(" = ")+mem.read(i));
Serial.println();
*/
/*
int at24c_data;
double time_data = millis();
long i;
for(i = 0;;i++)
{
mem.write(i, i%255);
if(i == 0)
{
at24c_data = mem.read(i);
}
if(mem.read(0) != at24c_data)
break;
if(i >= 40000)
break;
}
time_data = (millis() - time_data)/1000;
if(i >= 40000)
Serial.println(String("time out! time = ") + time_data + String("S ") + i + String("byte"));
else
Serial.println(String("finish! time = ") + time_data + String("S ") + i + String("byte"));
*/
while (1==1) {}
}