X-CUBE-MEMSMIC怎么扩展到6个麦克风

你好，


我需要帮助才能使用X-NUCLEO-CCA02M1和STEVAL-MKI155V3将X-CUBE-MEMSMIC的4麦克风架构扩展到6个麦克风。我附加了修改后的BSP驱动程序.c和.h文件。同样在audio_application.h我改变了号码。将麦克风设置为6.我试图为麦克风M5和M6配置SPI3。我看到SPI1和SPI3的slave选择是相同的，因为在这种情况下没有使用slave select，我知道这不应该是一个问题。你能不能让我知道我应该调查哪些部分代码才能让它适用于6个麦克风。我也试图增加PDM缓冲区但没有成功。我看到PDM数据在所有4个麦克风的范围内都可用，但是由于我的部分代码的变化，数据没有被记录。除了x_nucleo_cca02m1_audio_f4 BSP驱动程序之外，我应该考虑将其扩展到6个麦克风架构。

谢谢，
拉姆亚



以下为原文




Hello,


I need help with regard to extending the 4 microphone architecture of X-CUBE-MEMSMIC to 6 microphones using X-NUCLEO-CCA02M1 and STEVAL-MKI155V3. I have attached the modified BSP driver .c and .h files. Also in audio_application.h I have changed the no. of microphones to 6. I have tried to configure SPI3 for microphones M5 and M6. I see that slave select for both SPI1 and SPI3 are the same and since the slave select is not being used in this case, I know this shouldnt be a problem. Can you please let me know which all part of the code should I look into to get it working for 6 microphones. I have also tried to increase the PDM buffer but have not been successful. I see that PDM data is available on scope on all the 4 microphones but due to changes from my part of the code the data is not being recorded. Apart from the x_nucleo_cca02m1_audio_f4 BSP driver which part I should look into to extend the same to 6 microphone architecture.  

Thanks,
Ramya