Use DS1302 module to realize clock function
main function: Start an instance of DS1302 and initialize DS1302
DS1302::DS1302(const uint8_t ce_pin, const uint8_t io_pin, const uint8_t sclk_pin)
| Parameter | function |
|---|---|
| ce_pin | Corresponding pin to connect RST |
| io_pin | Corresponding pin to connect DAT |
| sclk_pin | Corresponding pin to connect CLK |
Time::Time(const uint16_t yr, const uint8_t mon, const uint8_t date, const uint8_t hr, const uint8_t min, const uint8_t sec, const Day day)
| Parameter | function |
|---|---|
| yr | year |
| mon | mouth |
| date | day |
| hr | hour |
| min | minute |
| sec | second |
| day | day of the week |
day has a corresponding structure
public:
enum Day
{
kSunday = 1,
kMonday = 2,
kTuesday = 3,
kWednesday = 4,
kThursday = 5,
kFriday = 6,
kSaturday = 7
};
code:
#include <stdio.h>
#include <DS1302.h>
namespace {
const int kCePin = 26; // 复位引脚
const int kIoPin = 17; // 数据引脚
const int kSclkPin = 16; // 时钟引脚
DS1302 rtc(kCePin, kIoPin, kSclkPin);
// 获取星期
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() {
// 从模块获得当前时间
Time t = rtc.time();
const String day = dayAsString(t.day);
// 格式化时间数据
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);
Serial.println(buf);
}
} // namespace
void setup() {
Serial.begin(9600);
rtc.writeProtect(false);
rtc.halt(false);
// 设置初始时间
Time t(2019, 6, 18, 16, 40, 40, Time::kTuesday);
rtc.time(t);
}
void loop() {
printTime();
delay(1000);
}