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
|
#include <Wire.h>
#include <RTCx.h>
void printTm(Stream &str, struct RTCx::tm *tm)
{
str.print(tm->tm_year + 1900);
str.print('-');
str.print(tm->tm_mon + 1);
str.print('-');
str.print(tm->tm_mday);
str.print('T');
str.print(tm->tm_hour);
str.print(':');
str.print(tm->tm_min);
str.print(':');
str.print(tm->tm_sec);
str.print(" yday=");
str.print(tm->tm_yday);
str.print(" wday=");
str.println(tm->tm_wday);
}
void setup(void)
{
Serial.begin(9600);
Wire.begin();
// The address used by the DS1307 is also used by other devices (eg
// MCP3424 ADC). Test for a MCP7941x device first.
uint8_t addressList[] = {RTCx::MCP7941xAddress,
RTCx::DS1307Address};
// Autoprobe to find a real-time clock.
if (rtc.autoprobe(addressList, sizeof(addressList))) {
// Found something, hopefully a clock.
Serial.print("Autoprobe found ");
switch (rtc.getDevice()) {
case RTCx::DS1307:
Serial.print("DS1307");
break;
case RTCx::MCP7941x:
Serial.print("MCP7941x");
break;
default:
// Ooops. Must update this example!
Serial.print("unknown device");
break;
}
Serial.print(" at 0x");
Serial.println(rtc.getAddress(), HEX);
}
else {
// Nothing found at any of the addresses listed.
Serial.println("No RTCx found");
return;
}
// Enable the battery backup. This happens by default on the DS1307
// but needs to be enabled on the MCP7941x.
rtc.enableBatteryBackup();
// rtc.clearVBAT();
// Ensure the oscillator is running.
rtc.startClock();
if (rtc.getDevice() == RTCx::MCP7941x) {
Serial.print("Calibration: ");
Serial.println(rtc.getCalibration(), DEC);
// rtc.setCalibration(-127);
}
rtc.setSQW(RTCx::freq4096Hz);
}
int ledBlue = 9;
int ledGreen = 3;
int ledRed = 11;
unsigned long last = 0;
void loop() {
// put your main code here, to run repeatedly:
struct RTCx::tm tm;
struct RTCx::tm *ptr;
rtc.readClock(tm);
ptr= &tm;
analogWrite(ledBlue,(ptr->tm_sec*4)+15);
Serial.print("Blue LED ");
Serial.println((ptr->tm_sec*4));
analogWrite(ledGreen,(ptr->tm_sec*2));
analogWrite(ledRed,(ptr->tm_sec*2));
delay(1000);
printTm(Serial, ptr);
RTCx::time_t t = RTCx::mktime(&tm);
printTm(Serial, &tm);
Serial.print("unixtime = ");
Serial.println(t);
Serial.println("-----");
}
|
