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STM32CUBEL4 датащи(PDF) 23 Page - STMicroelectronics |
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STM32CUBEL4 датащи(HTML) 23 Page - STMicroelectronics |
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23 / 37 page ![]() DocID028080 Rev 1 23/37 UM1919 Demonstration functional description 36 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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