I2S使用(集成电路内置音频总线)
关于 I2S 详情请参考音频总线I2S-API 文档.
1. 使用方法
- 从 Maix 导入 I2S 模块
from Maix import I2S - 创建 I2S 对象
i2s_dev = I2S(device_num) - 配置参数
i2s_dev.channel_config(rx.CHANNEL_0, rx.RECEIVER, align_mode = I2S.STANDARD_MODE) i2s_dev.set_sample_rate(sample_rate) - 读取或播放数据
i2s_dev.record(256)#sampling points number must be smaller than 256 2. 例程
收集数据并直接播放
from Maix import I2S import time from fpioa_manager import * fm.register(20,fm.fpioa.I2S0_IN_D0)#GO fm.register(19,fm.fpioa.I2S0_WS) fm.register(18,fm.fpioa.I2S0_SCLK) fm.register(34,fm.fpioa.I2S2_OUT_D1) fm.register(35,fm.fpioa.I2S2_SCLK) fm.register(33,fm.fpioa.I2S2_WS) sample_rate = 44*1000 rx = I2S(I2S.DEVICE_0) rx.channel_config(rx.CHANNEL_0, rx.RECEIVER, align_mode = I2S.STANDARD_MODE) rx.set_sample_rate(sample_rate) tx = I2S(I2S.DEVICE_2) tx.channel_config(tx.CHANNEL_1, tx.TRANSMITTER, align_mode = I2S.RIGHT_JUSTIFYING_MODE) tx.set_sample_rate(sample_rate) while True: audio = rx.record(256)#sampling points number must be smaller than 256 tx.play(audio)