[Arduino]利用DS3102製作時鐘
接線方面
DS1302
|
Arduino
|
VCC
|
3.3V
|
GND
|
GND
|
CLK
|
Digital Input 7
|
DAT
|
Digital Input 6
|
RST
|
Digital Input 5
|
Program方面
先把這模組加至Arduino library 中
第一次用時要先調校一下時鐘
可用剛加入的Library中的一個叫Set Clock的Sample
或直傳上傳以下編碼
// Example sketch for interfacing with the DS1302 timekeeping chip.
//
// Copyright (c) 2009, Matt Sparks
// All rights reserved.
//
// http://quadpoint.org/projects/arduino-ds1302
#include
#include
namespace {
// Set the appropriate digital I/O pin connections. These are the pin
// assignments for the Arduino as well for as the DS1302 chip. See the DS1302
// datasheet:
//
// http://datasheets.maximintegrated.com/en/ds/DS1302.pdf
const int kCePin = 5; // Chip Enable
const int kIoPin = 6; // Input/Output
const int kSclkPin = 7; // Serial Clock
// Create a DS1302 object.
DS1302 rtc(kCePin, kIoPin, kSclkPin);
String dayAsString(const Time::Day day) {
switch (day) {
case Time::kSunday: return "Sunday";
case Time::kMonday: return "Monday";
case Time::kTuesday: return "Tuesday";
case Time::kWednesday: return "Wednesday";
case Time::kThursday: return "Thursday";
case Time::kFriday: return "Friday";
case Time::kSaturday: return "Saturday";
}
return "(unknown day)";
}
void printTime() {
// Get the current time and date from the chip.
Time t = rtc.time();
// Name the day of the week.
const String day = dayAsString(t.day);
// Format the time and date and insert into the temporary buffer.
char buf[50];
snprintf(buf, sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
day.c_str(),
t.yr, t.mon, t.date,
t.hr, t.min, t.sec);
// Print the formatted string to serial so we can see the time.
Serial.println(buf);
}
} // namespace
void setup() {
Serial.begin(9600);
// Initialize a new chip by turning off write protection and clearing the
// clock halt flag. These methods needn't always be called. See the DS1302
// datasheet for details.
rtc.writeProtect(false);
rtc.halt(false);
// Make a new time object to set the date and time.
// Sunday, September 22, 2013 at 01:38:50.
Time t(2015, 8, 9, 19, 39, 41, Time::kSunday);
// Set the time and date on the chip.
rtc.time(t);
}
// Loop and print the time every second.
void loop() {
printTime();
delay(1000);
}
*紅字部份需要自行修改
之後把上面代碼void setup()中以下部份刪除
rtc.writeProtect(false);
rtc.halt(false);
// Make a new time object to set the date and time.
// Sunday, September 22, 2013 at 01:38:50.
Time t(2015, 8, 9, 19, 39, 41, Time::kSunday);
// Set the time and date on the chip.
rtc.time(t);
在Serial Monitor窗口中便可以看到現在時間