Running the demonstration
UM1590
Doc ID 023892 Rev 1
Figure 25.
StopWatch submenu
After startup, a default 00:00:00:000 chronometer counter is displayed on the LCD, it
correspond to [Hours]:[minutes]:[seconds]:[milliseconds].
The user can control the chronometer features using the joystick LEFT and RIGHT push-
buttons:
1.
Press the joystick LEFT button to start the counter.
2.
Press the joystick RIGHT button to save trials in the backup registers (max 5 actions).
3.
Press the KEY button to exit.
4.
Press and hold the SEL button for 1 sec to reset all the backup registers.
Lap timer
This application simulates a precise Hourglass, it measure the passage of a short period
(subseconds, seconds or minutes) of time. For this application an interactive human
interface is developed using the STM32303C-EVAL LCD and push-buttons to allow the user
to use the lap timer with real time display. After startup, the Hourglass is filled and the default
timer duration is set to one minute. Using the UP and DOWN push-buttons, the user can
change the timer duration (the timer duration must be greater than 30 seconds and less than
2 minutes).
