TWR-K22F120M

The sai_interrupt example shows how to use sai functional API to implement interrupt playback:In this example, one sai instance playbacks the audio data stored in flash/SRAM using interrupt.

The sai_interrupt_record_playback example shows how to use sai driver with record and playback features: In this example, one sai instance record the audio data from input and playbacks the audio data.

The sai_interrupt_transfer example shows how to use sai driver with interrupt:In this example, one sai instance playbacks the audio data stored in flash/SRAM using interrupt.

The SAI Demo application demonstrates complicated digital audio playback and record case. The demo provide these features below:1. Duplex audio transfer, record and playback at same time.2. Playback a 250 Hz sine wave data generated by CMSIS-DSP library. Also compute the fundamental frequency using Fast Fourier Transform with CMSIS-DSP library.3. Record a 5 seconds audio to sdcard with a FatFs system. After record, playback it. This feature may only existed in platform which support sdhc.

The Shell Demo application demonstrates to control Leds by commands.

The uart_edma ring buffer example shows how to use uart driver with EDMA:In this example, one uart instance connect to PC through uart, the board willsend back all characters that PC send to the board.

The uart_edma example shows how to use uart driver with EDMA:In this example, one uart instance connect to PC through uart, the board willsend back all characters that PC send to the board.Note: The example echo every 8 characters, so input 8 characters every time.

The uart_functioncal_interrupt example shows how to use uart driver functionalAPI to receive data with interrupt method:In this example, one uart instance connect to PC through uart, the board willsend back all characters that PC send to the board.

The uart_interrupt_ring_buffer example shows how to use uart driver in interrupt way withRX ring buffer enabled:In this example, one uart instance connect to PC through uart, the board willsend back all characters that PC send to the board.Note: The example echo every 8 characters, so input 8 characters every time.

The uart_interrupt example shows how to use uart driver in interrupt way:In this example, one uart instance connect to PC through uart, the board willsend back all characters that PC send to the board.Note: The example echo every 8 characters, so input 8 characters every time.