STM32CUBEL4 datasheet(23/37 Pages) STMICROELECTRONICS

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Demonstration functional description

4.4.8

Option

Overview

The option menu level provides the system control and information about the demonstration

firmware.

Figure 19. Option menu selection and display

Features

•

Low-power mode selection

–

Stop2: the MCU enters automatically into Stop2 mode after X seconds of inactivity

–

Disable: the MCU never enters in low-power mode (except in IDD demonstration)

The disable mode is available when running in USB-powered mode and not in

battery mode to not empty the battery.

•

Demonstration version (about)

–

Display STM32L476G discovery firmware version and copyright

4.5

Audio player control

Within the audio player application, the joystick key functions are enhanced and are

described in the following Table 4:

Table 4. Audio player control joystick key functions

Joystick key

Function

Brief description

RIGHT

Play

Changes the audio player state to “AUDIOPLAYER_PLAY”.

Reads the wave file from the storage Flash memory.

Sets the frequency.

Starts or resumes the audio task.

Starts playing audio stream from a data buffer using

“BSP_AUDIO_OUT_Play” function in BSP audio driver.

SEL

Pause /

Resume

Suspends the audio task when playing and pauses the audio file

stream.

Resumes the audio task and the audio file stream when suspended.

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