cortex-M3的I2S详细代码，了解I2S协议-cortex-M3' s I2S detailed code, understand I2S protocol

本例程使用STM32的I2S2音频接口驱动WM8978,实现简单的录音和回放功能（类似于复读机的工作模式） 支持录音时通过耳机监听MIC拾取的声音。-The routine use of the STM32 I2S2 audio interface driver WM8978, simple recording and playback functions (like video machines operating mode). Pick up sound when listening M

Realtek ALC5623 I2S AUdio Amplifier Datasheet

音频驱动流程 详解 针对i2s接口 i2c以及L3接口的不同情况编写驱动-Detailed audio-driven process for the preparation of the driver i2c i2s interfaces and different situations L3 interface