DocID024112 Rev 1

19/26

AN4229

How to use the demonstration

25

On EVAL boards the selected module is highlighted. Use joystick up and down to change

selection and Joystick Center to validate the selection and navigate to next menu.

On DISCOVERY board, rotate the board to the left or right to change selection and push

user button to validate it. In the main menu, if the green LED is on then the player module is

selected while the red LED corresponds to the recorder module (Figure 10).

Figure 10. Player and recorder selection

3.3.1

Player menu

In the audio player menu there are four possible actions: play, next, previous and stop.

On DISCOVERY board, here are the correspondences between LEDs indications and

selected actions:

•

Orange LED is on: PLAY action selected

•

Red LED is on: NEXT action selected

•

Blue LED is on: PREV action selected

•

Green LED is on: STOP action selected

On EVAL board display the selected action is clearly highlighted together with some useful

information: number of supported files found on media storage, currently selected file name,

player status. Additionally, the LEDs provide an indication on the audio player status (see

Figure 11).