WhyCan Forum(哇酷开发者社区)

    f1c100s_audio_init();
    f1c100s_audio_config(1, 16, 44100);
    f1c100s_audio_open(1024);
    f1c100s_audio_vol_set(63);    

    int fd = -1;
    int s = 0;

   uint8_t *buffer = NULL;
   buffer = rt_malloc(1024);

    fd = open(argv[1], O_WRONLY);

    rt_kprintf("wav play %s\n", argv[1]);

    while (1)
    {
        int length;        
        /* 从文件系统读取 wav 文件的音频数据 */
        length = read(fd, buffer, 1024);
        if (length <= 0)
            break;
        s += length;       
        audio_pcm_play(buffer, length);       
        lseek(fd, s, SEEK_SET);
        rt_thread_mdelay(6);
    }

void audio_pcm_play(unsigned char * dat,int len)
{
  	int time_out = 100;
	unsigned short *buf = (unsigned short *)dat;
	// while((!f1c100s_ndma_is_all_complete(AUDIO_DMA_CH))&&(--time_out))
	// {
	// 	rt_thread_delay(1);
	// }
	while(!f1c100s_ndma_is_all_complete(AUDIO_DMA_CH));
	memcpy(audio_buf[is_n],buf,len);
	f1c100s_ndma_clear_all_complete(AUDIO_DMA_CH);	
	f1c100s_ndma_disable(AUDIO_DMA_CH);
	f1c100s_ndma_config_for_audio(AUDIO_DMA_CH,(unsigned int)audio_buf[is_n],len);
	f1c100s_ndma_enable(AUDIO_DMA_CH);
	is_n=!is_n;
}