ST STM8/128-EVAL, User Manual

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Demonstration applications UM0501
12/23 Doc ID 14320 Rev 3
2.7 TIMER demo
This mode demonstrates the Timer peripheral operation.
1. To run the TIMER demo, enter the timer start value (from 1 to 18 minutes) using the
RV1 potentiometer (see Figure 8 ).
Figure 8. Entering the timer start value
2. Once the requested value is set, press SEL on the joystick to start the timer. The
remaining time is displayed on the LCD screen (see Figure 9 ).
Figure 9. Remaining time message
3. When the value reaches 00:10, a sound is heard for each second elapsed.
When the value reaches 00:00 the four LEDs flash and the message shown in
Figure 10 is displayed.
Figure 10. TIMER demo termination message
UP : Press the joystick UP to exit this demo.
KEY : Press KEY repeatedly to divide counter pulse duration by 2 (1 second, 0.5 second,
0.25 second, ... 31.25 ms, 1 second,...).
TIMER DEMO
03:00
Remaining...
01:45
Terminated!!!
00:00