flashlight 拍照過爆



有時候拍照照片一直過爆，通過分析現象時在低電量時必現過爆，在看代碼是低電量時預閃電量降低，導致預亮度低，sensor認爲環境亮度低，導致真閃過爆

 p->engLevel.torchDuty =2;
 //af
 p->engLevel.afDuty = 2; -----------------》電量多時預閃
 //pf, mf, normal
 p->engLevel.pfDuty = 2;
 p->engLevel.mfDutyMax = 15;
 p->engLevel.mfDutyMin = -1;
 //low bat
 p->engLevel.IChangeByVBatEn=1;
 p->engLevel.vBatL = 3750; //mv
 p->engLevel.pfDutyL = 2; -----------》低電量時預閃
 p->engLevel.mfDutyMaxL = 5;
 p->engLevel.mfDutyMinL = -1;