加断点调试，发现wx.getBLEDeviceCharacteristics不执行，无论success,fail,complete都没有执行，deviceID,serviceID都是正确的直接跳出

（手机为华为nova2,蓝牙模块为cc2640）

代码：

getBLEDeviceCharacteristics(deviceId, serviceId) {

    wx.getBLEDeviceCharacteristics({

      deviceId,

      serviceId,

      success: (res) => {

        // console.log('getBLEDeviceCharacteristics success', res.characteristics)

        console.log('step in getBLEDeviceCharacteristics:',res)

        // var here=this;

        // var char_temp=[];

        // var return_str={

        //   char_num:0,

        //   char:[],

        // };

        // return_str.char_num=res.characteristics.length;

        // for(let i=0;i<return_str.char_num;i++){

        //   var temp={};

        //   temp.uuid=res.characteristics[i].uuid;

        //   temp.pro=res.characteristics[i].properties

        //   char_temp[char_temp.length]=temp;

        // }

        // return_str.char=char_temp;

        // here.setData({

        //   ser_str:return_str

        // })

      },

      fail:(res)=> {

        console.error('getBLEDeviceCharacteristics', res)

      },

      complete:(res)=>{

        console.log('getBLEchar complete',res)

      },

    })

  },