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    【FAQ】全志V85x芯片 快起方式下如何配置isp led?

    V853系列-AI视觉
    v853 v851s isp faq 技术支持
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    • q1215200171
      budbool LV 8 last edited by

      1.主题

      快起方式如何配置isp led

      2.问题背景

      产品:v853,v851系列产品
      软件:快启方案

      3.问题分析

      sunxi平台在spl支持两种配置isp led的方式

      1.通过修改源码方式

      修改spl/common/update_ispparm.c文件中的的全局变量结构体

      //spl/common/update_ispparm.c
      struct Camera_Param camera_param[] = {
      	[enum_camera0] = {
      		.sign = CAMERA1_SIGN,
      		.addr = CFG_ISPPARAM_LOAD_ADDR,
      		.adc_channel = CAMERA1_ADC_CHANNEL, //读取adc的通道
      		.gpio_info = {
      			[enum_ir_cut0] = {
      				.port = SUNXI_GPIO_D,  //port 口
      				.port_num = 18, //port pin脚
      				.mul_sel = SUNXI_GPIO_OUTPUT,  //功能配置
      				.pull = SUNXI_GPIO_PULL_DISABLE, //上拉模式
      				.drv_level  = SUNXI_GPIO_DRV_LEVEL1, //驱动模式
      				.data = OUPUT_LOW_LEVEL, //初始化数据,此处表示初始化为低电平
       ...
      			},}},}
      

      2.通过内核设备树方式

      此方式需要打开fdt的宏CFG_SUNXI_FDT=y,此种方式优先级高于方式一

      以853平台为例,增加以下节点即可

      //arch/arm/boot/dts/sun8iw21p1.dtsi
      isp_boot0_gpio:isp_boot0_gpio@0 {
          device_type = "isp_boot0_gpio";
          /* port:0x3--D  0xFF--no use
          * pin:0x5--5
          * mul_sel:0x1
          * pull:0xffffffff -- default
          * drv_level:0xffffffff
          * data:0x0
          */
          camera0_cut0 = <0x54 0x3 0x12 0x1 0x0 0x1 0x0>;
          camera0_cut1 = <0x54 0x3 0x8 0x1 0x0 0x1 0x0>;
          camera0_led = <0x54 0xFF 0xFF 0x1 0x0 0x1 0x0>;
          camera1_cut0 = <0x54 0x3 0x12 0x1 0x0 0x1 0x0>;
          camera1_cut1 = <0x54 0x3 0x8 0x1 0x0 0x1 0x0>;
          camera1_led = <0x54 0xFF 0xFF 0x1 0x0 0x1 0x0>;
      };
      
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