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。
cd ko ./load3516a -a -sensor sc3035 -osmem 64
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_TYPE in
sc3035)
himm 0x200f0050 0x2; # i2c0_scl
himm 0x200f0054 0x2; # i2c0_sda
himm 0x2003002c 0xB0007 # sensolsr unreset, clk 27MHz, VI 250MHz
;;
*)
echo "xxxx Invalid sensor type $SNS_TYPE xxxx"
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。
void sensor_init()
{
sensor_i2c_init();
sensor_init_3M_1536p_4lan();
}
void sensor_init_3M_1536p_4lan()
{
sensor_write_register(0x0100,0x00);
sensor_write_register(0x4500,0x31);// rnc sel
sensor_write_register(0x3416,0x11);
sensor_write_register(0x4501,0xa4);// bit ctrl
sensor_write_register(0x3e03,0x03);// aec
sensor_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);// ramp cur
sensor_write_register(0x5780,0xff);// dpc
sensor_write_register(0x5781,0x04);
sensor_write_register(0x5785,0x10);
sensor_write_register(0x301e,0xe0);// [4] 0:close tempsens
sensor_write_register(0x3662,0x82);
sensor_write_register(0x3d0d,0x00);// close random code
sensor_write_register(0x3039,0x20);
sensor_write_register(0x303a,0x38);//74.25M pclk
sensor_write_register(0x303b,0x00);
sensor_write_register(0x3306,0x56);
sensor_write_register(0x330b,0xc0);
sensor_write_register(0x3038,0xf8);//pump clk div
sensor_write_register(0x320c,0x04); //hts=2500
sensor_write_register(0x320d,0xe2);
sensor_write_register(0x320e,0x06); //vts=1584
sensor_write_register(0x320f,0x30);
sensor_write_register(0x3202,0x00);// ystart=48
sensor_write_register(0x3203,0x00);
sensor_write_register(0x3206,0x06);// yend=1545 1545 rows selected
sensor_write_register(0x3207,0x08);
sensor_write_register(0x3200,0x00);// xstart= 136
sensor_write_register(0x3201,0x88);
sensor_write_register(0x3204,0x09);// xend = 2447 2312 cols selected
sensor_write_register(0x3205,0x8f);
sensor_write_register(0x3211,0x04); // xstart
sensor_write_register(0x3213,0x04); // ystart
sensor_write_register(0x3208,0x09); //2304x1536
sensor_write_register(0x3209,0x00);
sensor_write_register(0x320a,0x06);
sensor_write_register(0x320b,0x00);
sensor_write_register(0x3312,0x06);// sa1 timing
sensor_write_register(0x3340,0x04);
sensor_write_register(0x3341,0xd2);
sensor_write_register(0x3342,0x01);
sensor_write_register(0x3343,0xb0);
sensor_write_register(0x335d,0x2a);// cmp timing
sensor_write_register(0x3348,0x04);
sensor_write_register(0x3349,0xd2);
sensor_write_register(0x334a,0x01);
sensor_write_register(0x334b,0xb0);
sensor_write_register(0x3368,0x03);// auto precharge
sensor_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);// pclk inv
sensor_write_register(0x303f,0x82);
sensor_write_register(0x3c03,0x10);//fifo sram read position
sensor_write_register(0x3c00,0x45);// Dig SRAM reset
sensor_write_register(0x3630,0x83);//0xb9
sensor_write_register(0x3635,0x60);//0x66
sensor_write_register(0x3620,0x62);//0x82
sensor_write_register(0x3c00,0x00);//[2]: 0 mipi->fifo
sensor_write_register(0x303f,0x02);//[7]: 0 sel pll_pclk
sensor_write_register(0x3031,0x0a);//[3:0] 10bit
sensor_write_register(0x3018,0x73);//[7:5] sel lane=reg+1
sensor_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("SC3035 sensor 3M-1536p 30fps init success!\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。
//ISP function
HI_S32 cmos_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;
return 0;
}
//AE function
HI_S32 cmos_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;
return 0;
}
//AWB function
HI_S32 cmos_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;
return 0;
}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 ;sensor name Mode =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 ...etc DllFile =libs/libsns_sc3035_4lan.so ;sensor lib path [mode] input_mode =0 ;INPUT_MODE_MIPI = 0 ;INPUT_MODE_SUBLVDS = 1 ;INPUT_MODE_LVDS = 2 ...etc dev_attr = 0 ;mipi_dev_attr_t = 0 ;lvds_dev_attr_t = 1 ;NULL =2 [mipi] ;----------only for mipi_dev--------- data_type = 1 ;raw data type: 8/10/12/14 bit ;RAW_DATA_8BIT = 0 ;RAW_DATA_10BIT = 1 ;RAW_DATA_12BIT = 2 ;RAW_DATA_14BIT = 3 lane_id = 0| 1 | 2 | 3 |-1|-1|-1|-1| ;lane_id: -1 - disable [isp_p_w_picpath] Isp_x =0 Isp_y =0 Isp_W =2304 Isp_H =1536 Isp_FrameRate=30 Isp_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。
cd Hi3516A_Stream_V1.0.5.0 ./HiIspTools.sh -a -p sc3035_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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