Datasheet

view raw
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
adalogger.ino hosted with ❤ by GitHub
If you really want to make sure you save every data point, put a
logfile.flush();
right after the logfile.print's however this will cause the adalogger to draw a lot more power, maybe about 3x as much
on average (30mA avg rather than about 10mA)
strcpy(filename, "ANALOG00.TXT");
for (uint8_t i = 0; i < 100; i++) {
filename[6] = '0' + i/10;
filename[7] = '0' + i%10;
// create if does not exist, do not open existing, write, sync after write
if (! SD.exists(filename)) {
break;
}
}
logfile = SD.open(filename, FILE_WRITE);
if( ! logfile ) {
Serial.print("Couldnt create ");
Serial.println(filename);
error(3);
}
Serial.print("Writing to ");
Serial.println(filename);
pinMode(13, OUTPUT);
pinMode(8, OUTPUT);
Serial.println("Ready!");
}
uint8_t i=0;
void loop() {
digitalWrite(8, HIGH);
logfile.print("A0 = "); logfile.println(analogRead(0));
Serial.print("A0 = "); Serial.println(analogRead(0));
digitalWrite(8, LOW);
delay(100);
}
© Adafruit Industries https://learn.adafruit.com/adafruit-adalogger-featherwing Page 27 of 36