Brendan Clarke

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9 years, 3 months ago.

Configuring SysTick for audio streaming

Hi All, Please excuse me if this is a silly question, I'm just beginning to learn this platform.

I tried out the 'DISCO_LCDTS_demo' program and got that up and running fine. I'd like to add some audio output also, so I added relevant files from the "STM32Cube_FW_F7", "SAI_Audio Example".

After some alterations, this compiles ok, I can assign an audio buffer and start audio (I get loud buzzing on the audio out). However, I can't get the program to continue from there. I think for the audio to continue processing, I need to call "AUDIO_Process()" from the system timer interrupt (SysTick). I can see this is properly configured to be 1ms, but can't see where to add the code. In the SAI audio example, this is configured in a couple of files called 'stm32f7xx_it.c/.h' but I'm not sure what to do with these. Does this go somewhere in the 'mbed' library?

Thank you for any help!

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Last updated: 20 Apr 2021
The STM32F746G-DISCO discovery board (32F746GDISCOVERY) is a complete demonstration and development platform for STMicroelectronics ARM® Cortex®-M7 core-based STM32F746NGH6 microcontroller.
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