海思Hi3516A（3）图像sensor驱动开发
1. 设备驱动加载及系统配置
关于sensor的开发环境、MPP的工作原理、ISP简介等可参考shugenyin的博客——海思Hi3518EV200。
cdko./load3516a-a-sensorsc3035-osmem64
在load脚本中添加sensor的相关配置，这里使用smartsens的SC3035-M的360万像素CMOS sensor。
insert_sns(){case$SNS_TYPEinsc3035)himm0x200f00500x2;#i2c0_sclhimm0x200f00540x2;#i2c0_sdahimm0x2003002c0xB0007#sensolsrunreset,clk27MHz,VI250MHz;;*)echo"xxxxInvalidsensortype$SNS_TYPExxxx"report_error;;esac}
2. sensor的库文件生成(.so)
sensor的库文件需要在Linux服务器中的SDK包中编译得到，将生成的.so文件放到SDK包中的stream软件包中的Hi3516A_Stream_xxx/libs目录下。
sc3035_sensor_ctl.c实现sensor的初始化。
voidsensor_init(){sensor_i2c_init();sensor_init_3M_1536p_4lan();}voidsensor_init_3M_1536p_4lan(){sensor_write_register(0x0100,0x00);sensor_write_register(0x4500,0x31);//rncselsensor_write_register(0x3416,0x11);sensor_write_register(0x4501,0xa4);//bitctrlsensor_write_register(0x3e03,0x03);//aecsensor_write_register(0x3e08,0x00);sensor_write_register(0x3e09,0x10);sensor_write_register(0x3e01,0x30);sensor_write_register(0x322e,0x00);sensor_write_register(0x322f,0xaf);sensor_write_register(0x3306,0x56);sensor_write_register(0x3307,0x17);sensor_write_register(0x330b,0x54);sensor_write_register(0x3303,0x20);sensor_write_register(0x3309,0x20);sensor_write_register(0x3308,0x08);sensor_write_register(0x331e,0x16);sensor_write_register(0x331f,0x16);sensor_write_register(0x3320,0x18);sensor_write_register(0x3321,0x18);sensor_write_register(0x3322,0x18);sensor_write_register(0x3323,0x18);sensor_write_register(0x330c,0x0b);sensor_write_register(0x330f,0x07);sensor_write_register(0x3310,0x42);sensor_write_register(0x3324,0x07);sensor_write_register(0x3325,0x07);sensor_write_register(0x335b,0xca);sensor_write_register(0x335e,0x07);sensor_write_register(0x335f,0x10);sensor_write_register(0x3334,0x00);sensor_write_register(0x3F01,0x04);sensor_write_register(0x3F04,0x01);sensor_write_register(0x3F05,0x30);sensor_write_register(0x3626,0x01);sensor_write_register(0x3635,0x60);sensor_write_register(0x3631,0x84);sensor_write_register(0x3636,0x88);sensor_write_register(0x3633,0x3f);sensor_write_register(0x3639,0x80);sensor_write_register(0x3622,0x12);sensor_write_register(0x3627,0x02);sensor_write_register(0x3038,0xa4);sensor_write_register(0x3621,0x18);sensor_write_register(0x363a,0x1c);sensor_write_register(0x3637,0xbe);sensor_write_register(0x3638,0x85);sensor_write_register(0x363c,0x48);//rampcursensor_write_register(0x5780,0xff);//dpcsensor_write_register(0x5781,0x04);sensor_write_register(0x5785,0x10);sensor_write_register(0x301e,0xe0);//[4]0:closetempsenssensor_write_register(0x3662,0x82);sensor_write_register(0x3d0d,0x00);//closerandomcodesensor_write_register(0x3039,0x20);sensor_write_register(0x303a,0x38);//74.25Mpclksensor_write_register(0x303b,0x00);sensor_write_register(0x3306,0x56);sensor_write_register(0x330b,0xc0);sensor_write_register(0x3038,0xf8);//pumpclkdivsensor_write_register(0x320c,0x04);//hts=2500sensor_write_register(0x320d,0xe2);sensor_write_register(0x320e,0x06);//vts=1584sensor_write_register(0x320f,0x30);sensor_write_register(0x3202,0x00);//ystart=48sensor_write_register(0x3203,0x00);sensor_write_register(0x3206,0x06);//yend=15451545rowsselectedsensor_write_register(0x3207,0x08);sensor_write_register(0x3200,0x00);//xstart=136sensor_write_register(0x3201,0x88);sensor_write_register(0x3204,0x09);//xend=24472312colsselectedsensor_write_register(0x3205,0x8f);sensor_write_register(0x3211,0x04);//xstartsensor_write_register(0x3213,0x04);//ystartsensor_write_register(0x3208,0x09);//2304x1536sensor_write_register(0x3209,0x00);sensor_write_register(0x320a,0x06);sensor_write_register(0x320b,0x00);sensor_write_register(0x3312,0x06);//sa1timingsensor_write_register(0x3340,0x04);sensor_write_register(0x3341,0xd2);sensor_write_register(0x3342,0x01);sensor_write_register(0x3343,0xb0);sensor_write_register(0x335d,0x2a);//cmptimingsensor_write_register(0x3348,0x04);sensor_write_register(0x3349,0xd2);sensor_write_register(0x334a,0x01);sensor_write_register(0x334b,0xb0);sensor_write_register(0x3368,0x03);//autoprechargesensor_write_register(0x3369,0x30);sensor_write_register(0x336a,0x06);sensor_write_register(0x336b,0x30);sensor_write_register(0x3367,0x05);sensor_write_register(0x330e,0x17);sensor_write_register(0x3d08,0x00);//pclkinvsensor_write_register(0x303f,0x82);sensor_write_register(0x3c03,0x10);//fifosramreadpositionsensor_write_register(0x3c00,0x45);//DigSRAMresetsensor_write_register(0x3630,0x83);//0xb9sensor_write_register(0x3635,0x60);//0x66sensor_write_register(0x3620,0x62);//0x82sensor_write_register(0x3c00,0x00);//[2]:0mipi->fifosensor_write_register(0x303f,0x02);//[7]:0selpll_pclksensor_write_register(0x3031,0x0a);//[3:0]10bitsensor_write_register(0x3018,0x73);//[7:5]sellane=reg+1sensor_write_register(0x3030,0x14);sensor_write_register(0x3039,0x21);sensor_write_register(0x303a,0x0F);sensor_write_register(0x303b,0x06);sensor_write_register(0x303c,0x38);sensor_write_register(0x3650,0x46);sensor_write_register(0x0100,0x01);printf("SC3035sensor3M-1536p30fpsinitsuccess!\n");}
sc3035_cmos.c主要实现ISP需要的回调函数，传递参数，包括ISP、AE、AWB等。
//ISPfunctionHI_S32cmos_init_sensor_exp_function(ISP_SENSOR_EXP_FUNC_S*pstSensorExpFunc){memset(pstSensorExpFunc,0,sizeof(ISP_SENSOR_EXP_FUNC_S));pstSensorExpFunc->pfn_cmos_sensor_init=sensor_init;pstSensorExpFunc->pfn_cmos_sensor_exit=sensor_exit;pstSensorExpFunc->pfn_cmos_sensor_global_init=sensor_global_init;pstSensorExpFunc->pfn_cmos_set_p_w_picpath_mode=cmos_set_p_w_picpath_mode;pstSensorExpFunc->pfn_cmos_set_wdr_mode=cmos_set_wdr_mode;pstSensorExpFunc->pfn_cmos_get_isp_default=cmos_get_isp_default;pstSensorExpFunc->pfn_cmos_get_isp_black_level=cmos_get_isp_black_level;pstSensorExpFunc->pfn_cmos_set_pixel_detect=cmos_set_pixel_detect;pstSensorExpFunc->pfn_cmos_get_sns_reg_info=cmos_get_sns_regs_info;return0;}//AEfunctionHI_S32cmos_init_ae_exp_function(AE_SENSOR_EXP_FUNC_S*pstExpFuncs){memset(pstExpFuncs,0,sizeof(AE_SENSOR_EXP_FUNC_S));pstExpFuncs->pfn_cmos_get_ae_default=cmos_get_ae_default;pstExpFuncs->pfn_cmos_fps_set=cmos_fps_set;pstExpFuncs->pfn_cmos_slow_framerate_set=cmos_slow_framerate_set;pstExpFuncs->pfn_cmos_inttime_update=cmos_inttime_update;pstExpFuncs->pfn_cmos_gains_update=cmos_gains_update;pstExpFuncs->pfn_cmos_again_calc_table=cmos_again_calc_table;pstExpFuncs->pfn_cmos_get_inttime_max=cmos_get_inttime_max;return0;}//AWBfunctionHI_S32cmos_init_awb_exp_function(AWB_SENSOR_EXP_FUNC_S*pstExpFuncs){memset(pstExpFuncs,0,sizeof(AWB_SENSOR_EXP_FUNC_S));pstExpFuncs->pfn_cmos_get_awb_default=cmos_get_awb_default;return0;}
3. 修改stream软件包的.ini文件
sc3035_3m_4lan.ini文件在Hi3516A_Stream_xxx/configs目录下，改文件主要指定.so文件的位置、输入视频的接口(LVDS/MIPI/DVP)、视频格式（分辨率、同步方式、目标帧率等）等系统配置。
[sensor]Sensor_type=sc3035;sensornameMode=0;WDR_MODE_NONE=0;WDR_MODE_BUILT_IN=1;WDR_MODE_2To1_LINE=2;WDR_MODE_2To1_FRAME=3;WDR_MODE_2To1_FRAME_FULL_RATE=4...etcDllFile=libs/libsns_sc3035_4lan.so;sensorlibpath[mode]input_mode=0;INPUT_MODE_MIPI=0;INPUT_MODE_SUBLVDS=1;INPUT_MODE_LVDS=2...etcdev_attr=0;mipi_dev_attr_t=0;lvds_dev_attr_t=1;NULL=2[mipi];----------onlyformipi_dev---------data_type=1;rawdatatype:8/10/12/14bit;RAW_DATA_8BIT=0;RAW_DATA_10BIT=1;RAW_DATA_12BIT=2;RAW_DATA_14BIT=3lane_id=0|1|2|3|-1|-1|-1|-1|;lane_id:-1-disable[isp_p_w_picpath]Isp_x=0Isp_y=0Isp_W=2304Isp_H=1536Isp_FrameRate=30Isp_Bayer=3;BAYER_RGGB=0,BAYER_GRBG=1,BAYER_GBRG=2,BAYER_BGGR=3
4. 运行stream软件
运行stream软件包中的HiIspTool.sh脚本，通过以太网卡与上位机的PQTools建立通信。
cdHi3516A_Stream_V1.0.5.0./HiIspTools.sh-a-psc3035_3m_4lan.ini
ittb_control进程是基于TCP的服务端，负责控制信号的传输。
ittb_stream进程也是基于TCP的服务端，负责播放H.265或YUV视频流。
5. 运行PQ Tools
双击PQ Tools图片，弹出如下对话框，设置IP地址。
在下拉菜单中选择TTP_Stream.exe选项
6. 最终结果
上位机显示视频结果，图像分辨率为2304*1536，帧率为30。
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