5509A用AIC23播放MP3文件
时间:10-02
整理:3721RD
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我在用5509A播放MP3文件时遇到个问题,音乐为9秒的输出给AIC23播放出来的时间大概在5秒,请问下是对AIC23配置错了吗?开发板例程提供的播放警报声是可以成功的,想问下各位大神有哪些资料可以参考呢?
- /*数字音频接口格式设置
AIC23为主模式,数据为DSP模式,数据长度16位*/
Uint16 digital_audio_inteface_format[2]={0x0e,0x53};
/*AIC23的波特率设置,采样率为44.1K*/
Uint16 sample_rate_control[2] = {0x10,0x23};
/*AIC23寄存器复位*/
Uint16 reset[2] ={0x1e,0x00};
/*AIC23节电方式设置,所有部分均所与工作状态*/
Uint16 power_down_control[2] ={0x0c,0x03};
/*AIC23模拟音频的控制
DAC使能,ADC输入选择为Line*/
Uint16 analog_aduio_path_control[2] ={0x08,0x10};
/*AIC23数字音频通路的控制*/
Uint16 digital_audio_path_control[2] ={0x0a,0x05};
/*AIC23数字接口的使能*/
Uint16 digital_interface_activation[2] ={0x12,0x01};
/*AIC23左通路音频调节*/
Uint16 left_line_input_volume_control[2] ={0x00,0x17};
/*AIC23右通路音频调节*/
Uint16 right_line_input_volume_control[2] ={0x02,0x17};
/*AIC23耳机左通路音频调节*/
Uint16 left_headphone_volume_control[2] ={0x05,0x11};
/*AIC23耳机右通路音频调节*/
Uint16 right_headphone_volume_control[2] = {0x07,0x11};
/*定义McBSP的句柄*/
MCBSP_Handle hMcbsp;
/*回放音频*/
while(TRUE)
{
while(!MCBSP_rrdy(hMcbsp)){};
for(temp=0;temp =0x428000)
{
sd_addr=0x403000;
while(1);
}
for(i=0;i<2048;i++)
{
MCBSP_write16(hMcbsp,datasend);
while(!MCBSP_rrdy(hMcbsp)){};
}
};
}
已退回3积分