Imx6sl BT audio streaming initial noise issue

取消
显示结果 
显示  仅  | 搜索替代 
您的意思是: 

Imx6sl BT audio streaming initial noise issue

766 次查看
raj27
Contributor I
Hi All,

We are using sgtl5000 audio codec with imx6sl processor,which has the wl1831 (WLAN/BT) module.We are using existing codec drivers available in kernel 3.10.17 of yocto 1.6 along with bluez4.101 package.

Using A2DP profile for BT and able to stream music from mobile to the Headset and LINE OUT

But facing 4-5 sec glitches at the start of music,and we probed and observed the patterns on CRO but didn't find any noise patterns,seems some buffering issue.After 4-5 sec audio streaming is happening very smoothly.

                                                                                                    

Mobile music player -----------> IMX(BT A2DP profile) ----------> SGTL5000 Audio codec ----------------->LINE OUT---------> Power D-Amplifier------> Speaker

                                                                                                       |

                                                                                                       |

                                                                                                       |-----------> Headset

In dts file following are the configurations for the BT uart

  kim {
        compatible = "kim";
        nshutdown_gpio = <51>;  /* BT Enable GPIO, GPIO2_IO19*/
        dev_name = "/dev/ttymxc3";  /* UART4 */
        flow_cntrl = <1>;
        baud_rate = <3000000>;
    };

Any one facing this kind of issue,or am i missing some configuration part, can any one please suggest?


标签 (1)
标记 (3)
0 项奖励
回复
0 回复数