PIC16F886
PIC16F886微控制器和RTC模組製作萬年曆電子鐘程式碼:
#include <16F886.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#fuses XT,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
// RTC I2C Address
#define RTC_ADDRESS 0xD0
// Define RTC Register Addresses
#define SEC_ADDRESS 0x00
#define MIN_ADDRESS 0x01
#define HOUR_ADDRESS 0x02
#define DAY_ADDRESS 0x04
#define MONTH_ADDRESS 0x05
#define YEAR_ADDRESS 0x06
// Define the 7-segment display patterns for the digits 0-9
const int8 patterns = {
0b00111111, // 0
0b00000110, // 1
0b01011011, // 2
0b01001111, // 3
0b01100110, // 4
0b01101101, // 5
0b01111101, // 6
0b00000111, // 7
0b01111111, // 8
0b01101111 // 9
};
// Define the 7-segment display patterns for the days of the week (0-6)
const int8 days = {
0b00001110, // Sunday
0b01100110, // Monday
0b01001111, // Tuesday
0b01101101, // Wednesday
0b00110110, // Thursday
0b01111101, // Friday
0b01110101 // Saturday
};
void i2c_start() {
i2c_start();
i2c_write(RTC_ADDRESS);
}
void i2c_stop() {
i2c_stop();
}
void i2c_write(int8 data) {
i2c_write(data);
}
int8 i2c_read(int1 ack) {
return i2c_read(ack);
}
void main() {
int8 sec, min, hour, day, month, year;
int8 weekday;
// Initialize the I2C bus
i2c_init();
while (1) {
// Read the time and date from the RTC
i2c_start();
i2c_write(RTC_ADDRESS);
i2c_write(SEC_ADDRESS);
i2c_start();
i2c_write(RTC_ADDRESS | 0x01);
sec = i2c_read(TRUE);
min = i2c_read(TRUE);
hour = i2c_read(TRUE);
weekday = i2c_read(TRUE);
day = i2c_read(TRUE);
month = i2c_read(TRUE);
year = i2c_read(FALSE);
i2c_stop();
// Display the time and date on the 7-segment display
output_high(PIN_A0); // select the first digit
output_d(patterns); // display the tens digit of the hour
delay_ms(5);
output_low(PIN_A0);
output_high(PIN_A1); // select the second digit
output_d(patterns); // display the ones digit of the hour
delay_ms(5);
output_low(PIN_A1
output_high(PIN_A2); // select the third digit
output_d(patterns); // display the tens digit of the minute
delay_ms(5);
output_low(PIN_A2);
output_high(PIN_A3); // select the fourth digit
output_d(patterns); // display the ones digit of the minute
delay_ms(5);
output_low(PIN_A3);
// Display the day of the week on the 7-segment display
output_high(PIN_A4); // select the fifth digit
output_d(days); // display the day of the week
delay_ms(5);
output_low(PIN_A4);
// Display the date on the 7-segment display
output_high(PIN_A5); // select the sixth digit
output_d(patterns); // display the tens digit of the day
delay_ms(5);
output_low(PIN_A5);
output_high(PIN_A6); // select the seventh digit
output_d(patterns); // display the ones digit of the day
delay_ms(5);
output_low(PIN_A6);
}
}
上述程式碼使用了PIC16F886微控制器和RTC模組,並且在7段顯示器上顯示時間、日期和星期幾。
其中,程式碼包括I2C通訊的初始化和讀取RTC數據的代碼,以及在7段顯示器上顯示數據的代碼。
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