main.cpp

00001 /*
00002 --------------------
00003 Author: L. Arrigoni
00004 May 2021
00005 --------------------
00006 
00007 Simple test with RTC module and STM32F411RE Nucleo board.
00008 DS1302 powered by 3.3 V without pull up resistor on I2C lines
00009 
00010 */
00011 
00012 
00013 #define SCLK    D15
00014 #define IO      D14
00015 #define CE      D8
00016 
00017 //Comment this line if the DS1302 is already running
00018 //#define INITIAL_RUN
00019 
00020 #include "mbed.h"
00021 #include "DS1302.h"
00022 
00023 DS1302 clk(SCLK, IO, CE);
00024 
00025 int main() {
00026     #ifdef INITIAL_RUN
00027     //clk.set_time(1256729737);
00028     clk.set_time(1623257900);  //from https://www.unixtimestamp.com/
00029     #endif
00030     
00031     char storedByte = clk.recallByte(0);
00032     printf("\r\nStored byte was %d, now increasing by one\r\n", storedByte);
00033     clk.storeByte(0, storedByte + 1);
00034     
00035     while(1) {
00036         time_t seconds = clk.time(NULL);
00037         printf("Date and time: %s\r", ctime(&seconds));
00038         wait(1);
00039     }
00040 }
00041 
00042