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discovery board PDM Microphone DMA

Zek_De
Senior

Hi everyone,
create the cubeide project for onboard PDM MEMS microphone on stm32 discovery kit. 
1- I2S2
2-Mode: Half Duplex Slave
3-DMA Settings -> add -> SPI2_TX 
Problem in section 3 . I cannot see the SPI2_RX which I will get the PDM peripheral to memory. As much as I know that is the right. Also I watched a video it is the same. Where is the problem. New version of software has problem? Or I can do something for it? 
Thanks for help in advance.

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