Renesas RL78/G13 - Starting LED Blink

RL78/G13 Safety Function (Frequency Detection)
5.8.21 Starting LED Blink
Figure 5.24 shows the flowchart for starting the LED blink.
R_Main_Start_LedBlink()
[Argument]
Enum which represents occurrence
frequency of HALFSEC fixed-frequency
interrupts
Interrupts are set to occur once in 0.5
second  (f
SUB
/f
IL
).
Start real-time clock
fixed-frequency interrupts
R_RTC_Set_ConstPeriod
InterruptOn(HALFSEC)
Start real-time clock
R_RTC_Start()
RTCIF bit

0
RTCMK bit  0
RTCE bit  1
Stop SEC-through-YEAR counters,
read counter values and enter write
mode
RWAIT bit

1
Ye s
No
SEC-through-YEAR
counters stopped?
Wait until RWST bit is set to 1.
Set up SEC-through-YEAR counters
RWAIT bit

0
Ye s
No
SEC-through-YEAR
counters started?
Wait until RWST bit is set to 0.
return
Figure 5.24 Starting LED Blink
R01AN0956EJ0100 Rev. 1.00 Page 52 of 70
Feb. 27, 2012