K210 development example - I2S playing audio

I2S play audio

1. Introduction to I2S

There are 3 built-in audio buses in K210 (I²S0, I²S1, I²S2), all of which are in MASTER mode. Among them, I²S0 supports configurable connection to the voice processing module to realize the functions of voice enhancement and sound source orientation. Here are some common features:

• Bus width configurable to 8, 16, and 32 bits
• Each interface supports up to 4 stereo channels
• Full-duplex communication is supported due to the independence of the transmitter and receiver
• Asynchronous clock for APB bus and I²S SCLK
• Audio data resolutions of 12, 16, 20, 24 and 32 bits
• I²S0 transmit FIFO depth is 64 bytes, receive is 8 bytes, I²S1 and I²S2 send and receive FIFO depth is 8 bytes
• Support DMA transfer
• Programmable FIFO Threshold

2. I2S driver API introduction

The WDT driver of K210 i2s.his defined in , commonly used to provide the following interfaces for users:

• <