ST STM8/128-EVAL, User Manual

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Demonstration applications UM0501
14/23 Doc ID 14320 Rev 3
Figure 12. Saving the melody
LEFT/RIGHT : Press the joystick LEFT or RIGHT to navigate the notes.
SEL : Press SEL to confirm a note and go to the next one.
KEY : Press KEY to switch between edit and protected modes.
RV1 : Use RV1 potentiometer to define the notes.
2.9 PWM demo 2
This demo also demonstrates the Timer peripheral operating in PWM mode. Make sure that
the JP14 jumper is installed in the bottom position (closer to LCD).
This demo allows to select and play one melody among a selection stored in the Flash
memory (see
Figure 13 ).
1. Navigate between the melodies by pressing the joystick LEFT or RIGHT , and press
SEL to select and play the melody (see Figure 13 )
Figure 13. Selecting a melody
2. The first time UP is pressed, the melody is stopped.
Note: Keep the joystick pressed UP for a short time to allow the action to be taken into account.
3. The second time UP is pressed, a message is displayed asking you to save the melody
or not.
a) If you press the KEY button, the melody is saved in the external EEPROM.
a) If you press UP , you exit from the demo without saving the melody.
LEFT/RIGHT : Press the joystick LEFT or RIGHT to navigate the melodies.
SEL : Press SEL to select a melody and play it.
Save melody ?
KEY=YES UP=NO
Select Melody
Bon Tabac