Clock
Dependencies: DS1307 Grove_Serial_LCD mbed
main.cpp
- Committer:
- yihui
- Date:
- 2013-12-09
- Revision:
- 0:06a98b973b14
File content as of revision 0:06a98b973b14:
#include "mbed.h" #include "SerialLCD.h" #include "ds1307.h" SerialLCD lcd(P1_13, P1_14); // Grove Serial LCD is connected to UART Tx and Rx pins DS1307 rtc(P0_5, P0_4); // Grove RTC is connected to I2C SDA(P0_5) and SCL(P0_4) int main() { const char *week[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; int sec, min, hour, day, date, month, year; char strBuffer[16]; lcd.begin(); lcd.print("Clock"); rtc.start_clock(); rtc.gettime(&sec, &min, &hour, &day, &date, &month, &year); if (0 == year) { rtc.settime(0, 0, 0, 4, 1, 1, 2014 % 100); // Jan 1st, 2014, Wed, 00:00:00 } while(1) { rtc.gettime(&sec, &min, &hour, &day, &date, &month, &year); snprintf(strBuffer, sizeof(strBuffer), "%d-%d-%d %s", 2000 + year, month, date, week[day]); lcd.setCursor(0, 0); lcd.print(strBuffer); snprintf(strBuffer, sizeof(strBuffer), "%d:%d:%d", hour, min, sec); lcd.setCursor(0, 1); lcd.print(strBuffer); wait(0.5); } }