3516A+ov4689(4M) sample_venc 调试

最近在调试3516a+ov4689 sensor的 ，运行样例./sample_venc 0 结果报错：=============SAMPLE_COMM_VI_SetMipiAttr enWDRMode: 0
linear mode
hi_i2c_wait_idle->208:
transmit error, int_raw_satatus: 0x750!
hi_i2c_set_dev_addr_and_mode->301:
wait i2c idle time out.
fist init ok!\\
second init ok\\n-------OV4689 Sensor 1080P 30fps Linear Mode Inu32BitCnt ===== 12
itial OK!-------
         c) cbr.
         v) vbr.
         f) fixQp
please input choose rc mode!
c
please press twice ENTER to exit this sample
[SAMPLE_COMM_VENC_GetVencStreamProc]-1104: get venc stream time out, exit thread
[SAMPLE_COMM_VENC_GetVencStreamProc]-1104: get venc stream time out, exit thread
一开始运行就没有视频流 ，另外sensor是I2C接口的 抓不到视频不知道是什么原因呢 求助isp调试高手。。