Tiny RTC 12C 时钟模块的初始化设置的代码
时间: 2023-07-16 13:13:29 浏览: 132
以下是使用 Arduino 来初始化设置 Tiny RTC 12C 时钟模块的示例代码:
```cpp
#include <Wire.h>
#define DS1307_ADDRESS 0x68 // I2C address of the DS1307 RTC
void setup() {
Wire.begin(); // Initialize I2C communication
Serial.begin(9600); // Initialize serial communication
// Set the time and date on the DS1307
// Format: seconds, minutes, hours, day of the week, day, month, year
setTimeDS1307(0, 0, 12, 5, 6, 11, 21);
}
void loop() {
// Read the time from the DS1307 and print it to the serial monitor
Serial.print(getHourDS1307());
Serial.print(":");
Serial.print(getMinuteDS1307());
Serial.print(":");
Serial.println(getSecondDS1307());
delay(1000); // Wait for one second
}
// Function to set the time and date on the DS1307
void setTimeDS1307(byte second, byte minute, byte hour, byte dayOfWeek, byte dayOfMonth, byte month, byte year) {
Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(0x00); // Set the register pointer to 00h
Wire.write(decToBcd(second)); // Set the seconds
Wire.write(decToBcd(minute)); // Set the minutes
Wire.write(decToBcd(hour)); // Set the hours
Wire.write(decToBcd(dayOfWeek)); // Set the day of the week (1=Sunday, 7=Saturday)
Wire.write(decToBcd(dayOfMonth)); // Set the day of the month
Wire.write(decToBcd(month)); // Set the month
Wire.write(decToBcd(year)); // Set the year (0-99)
Wire.endTransmission();
}
// Function to get the hour from the DS1307
byte getHourDS1307() {
Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(0x02); // Set the register pointer to 02h
Wire.endTransmission();
Wire.requestFrom(DS1307_ADDRESS, 1); // Request one byte of data
byte hour = bcdToDec(Wire.read() & 0x3f); // Get the hour (0-23)
return hour;
}
// Function to get the minute from the DS1307
byte getMinuteDS1307() {
Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(0x01); // Set the register pointer to 01h
Wire.endTransmission();
Wire.requestFrom(DS1307_ADDRESS, 1); // Request one byte of data
byte minute = bcdToDec(Wire.read()); // Get the minute (0-59)
return minute;
}
// Function to get the second from the DS1307
byte getSecondDS1307() {
Wire.beginTransmission(DS1307_ADDRESS);
Wire.write(0x00); // Set the register pointer to 00h
Wire.endTransmission();
Wire.requestFrom(DS1307_ADDRESS, 1); // Request one byte of data
byte second = bcdToDec(Wire.read() & 0x7f); // Get the second (0-59)
return second;
}
// Function to convert a decimal number to BCD
byte decToBcd(byte val) {
return ( (val/10*16) + (val%10) );
}
// Function to convert a BCD number to decimal
byte bcdToDec(byte val) {
return ( (val/16*10) + (val%16) );
}
```
这个示例代码展示了如何使用 Wire 库来读写 I2C 总线上的数据。首先,我们需要使用 `Wire.begin()` 来初始化 I2C 通信。然后,使用 `setTimeDS1307()` 函数来设置时间和日期。该函数会将当前时间和日期写入到 DS1307 的寄存器中。接下来,在 `loop()` 函数中,我们使用 `getHourDS1307()`、`getMinuteDS1307()` 和 `getSecondDS1307()` 函数来读取当前时间,并将其打印到串口监视器中。最后,我们使用 `delay(1000)` 函数来等待一秒钟,以确保每秒钟只打印一次时间。
请注意,上面的示例代码使用 DS1307 地址为 0x68。如果你使用的是不同的 RTC 时钟模块,可能需要修改地址。同时,你需要在 Arduino 中下载安装 Wire 库。
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