[技术问答] WM8731初始化里的条件编译怎么用

void WM8731_IO_Ini(void)

{

    stc_port_init_t stcPortIni;

    /* Enable I2S Peripheral*/

    PWC_Fcg1PeriphClockCmd(PWC_FCG1_PERIPH_I2S3, Enable);

    /* Initialize i2s port for codec wm8731 recorder function */

    MEM_ZERO_STRUCT(stcPortIni);

    stcPortIni.enPullUp = Enable;

    stcPortIni.enPinDrv = Pin_Drv_H;

    PORT_Init(I2S3_CK_PORT, I2S3_CK_PIN, &stcPortIni);

    PORT_Init(I2S3_WS_PORT, I2S3_WS_PIN, &stcPortIni);

    PORT_Init(I2S3_SD_PORT, I2S3_SD_PIN, &stcPortIni);

    PORT_SetFunc(I2S3_CK_PORT, I2S3_CK_PIN, Func_I2s3_Ck, Disable);

    PORT_SetFunc(I2S3_WS_PORT, I2S3_WS_PIN, Func_I2s3_Ws, Disable);

    PORT_SetFunc(I2S3_SD_IN_PORT, I2S3_SD_IN_PIN, Func_I2s3_Sdin, Disable);

    PORT_SetFunc(I2S3_SD_PORT, I2S3_SD_PIN, Func_I2s3_Sd, Disable);

#ifdef EXCK_ON

    PORT_Init(I2S3_EXCK_PORT, I2S3_EXCK_PIN, &stcPortIni);

    PORT_SetFunc(I2S3_EXCK_PORT, I2S3_EXCK_PIN, Func_I2s, Disable);

#else

    PORT_Init(I2S3_MCK_PORT, I2S3_MCK_PIN, &stcPortIni);

    PORT_SetFunc(I2S3_MCK_PORT, I2S3_MCK_PIN, Func_I2s, Disable);

#endif



    /* Enable I2C Peripheral*/

    PWC_Fcg1PeriphClockCmd(PWC_FCG1_PERIPH_I2C2, Enable);

    /* Initialize i2c port for codec wm8731 */

    PORT_SetFunc(I2C2_SCL_PORT, I2C2_SCL_PIN, Func_I2c2_Scl, Disable);

    PORT_SetFunc(I2C2_SDA_PORT, I2C2_SDA_PIN, Func_I2c2_Sda, Disable);

}