大家好，我想找到STM32L431CBT6 芯片的DSP library firmware，因为�?用到DSP的FFT，所以想找到这个用户手册，但是找了好久没有�?�现，能�??供一下下载地�?�或者pdf文件么

[Tesla DeLorean]

https://community.st.com/s/question/0D53W0000090S01SAE/hello-everyone-i-want-to-find-the-firmware-of-the-dsp-library-of-stm32l431cbt6-chip-because-fft-of-dsp-is-needed-i-want-to-find-this-user-manual-but-i-havent-found-it-for-a-long-time-could-you-please-provide-me-the-download-address-or-pdf-file