5. Sample Application Specifications
S5U1C17602T1100 Software Manual
EPSON
15
5.3.4
UC21: Display time
--- Basic information ---
ID UC21
Title Display
time
Actors Operator,
LCD
Overview
Continuously displays the time held internally on the LCD panel.
Ends time display and returns to function selection.
Pre-conditions
•
This function was selected and confirmed via “UC12: Select function.”
Post-conditions
Calls “UC12: Select function.”
Calls “UC22: Set time.”
--- Basic flow ---
1
The system switches the system clock from OSC1 to OSC3 to reduce power consumption and halts OSC3.
2
The system displays the time held internally on the LCD panel.
3
The operator presses SW2 to return to function selection.
4
The system restarts OSC3 and returns the system clock from OSC1 to OSC3.
5
The system calls “UC12: Select function.” (To UC12)
--- Alternate flow ---
If the time held internally advanced before the operator pressed SW2
*
1
3a
1
To basic flow 2
If SW1 and SW2 are pressed simultaneously
3b
1
“UC22: Set time” is called.
--- Remarks ---
*
1
The time held internally is updated each second by UC23: Advance time.