I2SIN_PAD_SEL_SFT
i2s_con = I2S_IN_PAD_IO_MUX << I2SIN_PAD_SEL_SFT;
i2s_con |= 0 << I2SIN_PAD_SEL_SFT;
i2s_con = I2S_IN_PAD_IO_MUX << I2SIN_PAD_SEL_SFT;
i2s_con |= 0 << I2SIN_PAD_SEL_SFT;
i2s_con = I2S_IN_PAD_IO_MUX << I2SIN_PAD_SEL_SFT;