Sets the cycle of the interrupts INTRTC, then starts the cyclic interrupt function.
[Syntax]
#include r_cg_macrodriver.h
#include r_cg_rtc.h
MD_STATUS R_RTC_Set_ConstPeriodInterruptOn ( rtc_int_period_t period );
[Argument(s)]
| 
 I/O  | 
 Argument  | 
 Description  | 
| 
 I  | 
 rtc_int_period_t period;  | 
 Interrupt INTRTC cycle HALFSEC: 0.5 seconds ONESEC: 1 second ONEMIN: 1 minute ONEHOUR: 1 hour ONEDAY: 1 day ONEMONTH: 1 month  | 
[Return value]
| 
 Macro  | 
 Description  | 
| 
 MD_OK  | 
 Normal completion  | 
| 
 MD_ARGERROR  | 
 Invalid argument specification  |