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AN3997 Application note - STMicroelectronics
https://www.st.com/resource/en/application_note/dm00040802-audio-playback-and-recording-using-the-stm32f4discovery-stmicroelectronics.pdf
Audio playback and recording using the STM32F4DISCOVERY 1 Introduction This application note describes the audio (wave) playback and recording application based on the STM32F4xx microcontroller and the STM32F4-DISCOVERY board. The audio data (wave) can be read from the internal Flash memory of the STM32F4xx
Library 59- Change PLL settings while ... - STM32F4 …
https://stm32f4-discovery.net/2015/05/library-59-change-pll-settings-while-stm32f4xx-is-running/
Here are steps, how you can change PLL settings if PLL is already running: Enable HSI/HSE for system core clock. Select HSI/HSE as system core clock and not PLL. Disable PLL. Change PLL parameters. Enable PLL and wait till it is ready. Select PLL as system core clock back. This is about 10 lines of code, but knowing that might save your life ...
STM32-AUDIO100A - STM32 Audio processing SW library ...
https://www.st.com/en/embedded-software/stm32-audio100a.html
Description The audio processing components for STM32F4 consists in a comprehensive set of high-quality efficient software libraries ready to be embedded into many kinds of audio appliances. All modules are delivered with internal 32-bits processing and support either 16 or 32 bits I/O buffers. All features
Configuring the STM32F4-Discovery for audio - mind …
https://minddumpdotnet.wordpress.com/2012/10/16/configuring-the-stm32f4-discovery-for-audio/
What made the STM32F4-Discovery board so attractive for me was the fact that it comes with a nice on-board Audio-DAC with integrated amplifier, the Cirrus Logic CS43L22. However, getting the combination of STM32F4 and CS43L22 to produce any sound is anything but trivial for someone just starting out with ARM microcontroller development (like me).
Why the program does not work when I enable PLL on STM32F4?
https://electronics.stackexchange.com/questions/509231/why-the-program-does-not-work-when-i-enable-pll-on-stm32f4
Why the program does not work when I enable PLL on STM32F4? Ask Question Asked 1 year, 6 months ago. Active 1 year, 6 months ago. Viewed 165 times 0 \$\begingroup\$ When I try to the code below, program running very well. But when I enable PLL_ON bit, the program does not work.
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