Francis Schumacher / nrf51_rtc

An attempt to provide a Real Time Clock for the nRF51-DK. This code provides rtc.time and rtc.set_time replacements for the similarly named C standard methods (unimplemented for nRF51-DK last I checked). Not very well tested, but it seems to work for simple applications.

Dependents:   nRF51_rtc_example LoRa_PIR BLE_Lightning_sensor BLE_AlarmWatch ... more

nrf51_rtc.h

Committer:
fxschumacher
Date:
2015-02-08
Revision:
0:3677a016109b

File content as of revision 0:3677a016109b:

#ifndef NRF51_RTC_H
#define NRF51_RTC_H

#include "mbed.h"

static class nrf51_rtc {
    // class to create equivalent of time() and set_time()
    //   ...depends upon RTC1 to be running and to never stop -- a byproduct of instantiation of mbed library's "ticker"
    public:
    nrf51_rtc();
    time_t time();
    int set_time(time_t rawtime);
    
    // these should be private
    private:
    time_t time_base;
    unsigned int rtc_previous;
    unsigned int ticks_per_second, counter_size_in_seconds;
    void update_rtc(); // similar to "time" but doesn't return the value, just updates underlying variables

} rtc;
#endif