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    jetson nano 2GB无法识别相机 MV-MIPI-IMX264M

    Scheduled Pinned Locked Moved Jetson App Software
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    • veye_xummV Offline
      veye_xumm @hmj
      last edited by

      6:从https://github.com/veyeimaging/nvidia_jetson_veye_bsp/tree/master/dtbs/Nano/JetPack_4.6.1_Linux_JETSON_NANO_TARGETS/dts dtb/MV-MIPI-MVCAM/ 下载tegra210-p3448-0003-p3542-0000.dtb 并替换官方dtb.

      dtb显示不正常。讲一下上面这步你是怎么做的？

      Questions will be answered as soon as possible, please be patient.
      如果你使用中文，请直接用中文提问。
      May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

      H 1 Reply Last reply Reply Quote 0
      • H Offline
        hmj @veye_xumm
        last edited by

        @veye_xumm
        我先把整个 /boot 压缩备份,
        用浏览器在github上下载zip包, 提取的tegra210-p3448-0003-p3542-0000.dtb,
        md5sum /tmp/tegra210-p3448-0003-p3542-0000.dtb
        e82e10f334ffc7b881e1549a1b100437 /tmp/tegra210-p3448-0003-p3542-0000.dtb

        直接拷贝覆盖/boot的那个同名文件,同时不确定是否到位, 也同步替换/boot//boot/kernel_tegra210-p3448-0003-p3542-0000.dtb.

        最后reboot

        veye_xummV 1 Reply Last reply Reply Quote 0
        • veye_xummV Offline
          veye_xumm @hmj
          last edited by

          @hmj 替换dtb的话，我们建议的是按照wiki的步骤，修改一下启动文件，配置FDT。参考一下3.5.6.

          Questions will be answered as soon as possible, please be patient.
          如果你使用中文，请直接用中文提问。
          May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

          H 1 Reply Last reply Reply Quote 0
          • H Offline
            hmj @veye_xumm
            last edited by

            This post is deleted!
            veye_xummV 1 Reply Last reply Reply Quote 0
            • veye_xummV Offline
              veye_xumm @hmj
              last edited by

              @hmj 好哒，棒棒哒

              Questions will be answered as soon as possible, please be patient.
              如果你使用中文，请直接用中文提问。
              May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

              H 1 Reply Last reply Reply Quote 0
              • H Offline
                hmj @veye_xumm
                last edited by

                @veye_xumm
                我需要一个C的开发手册, 方便开发应用,谢谢!

                veye_xummV 1 Reply Last reply Reply Quote 0
                • veye_xummV Offline
                  veye_xumm @hmj
                  last edited by

                  @hmj 请参考这篇文章的part7和part8

                  Questions will be answered as soon as possible, please be patient.
                  如果你使用中文，请直接用中文提问。
                  May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                  H 2 Replies Last reply Reply Quote 0
                  • H Offline
                    hmj @veye_xumm
                    last edited by

                    @veye_xumm

                    如果用作硬触发模式,如何设置,相机的曝光时间?

                    veye_xummV 1 Reply Last reply Reply Quote 0
                    • H Offline
                      hmj @veye_xumm
                      last edited by

                      @veye_xumm
                      v4l2-ctl --set-ctrl trigger_mode=1
                      v4l2-ctl --set-ctrl trigger_src=1
                      v4l2-ctl -d /dev/video0 --set-fmt-video=width=2432,height=2048,pixelformat=GREY --stream-mmap --stream-count=1 --stream-to=raw.raw

                      我用gpio触发, 硬件链接没问题, 量到正常电平,但是并没有获取到图片,还需要哪些设置?

                      1 Reply Last reply Reply Quote 0
                      • veye_xummV Offline
                        veye_xumm @hmj
                        last edited by

                        @hmj 参考下面这个文章的ISP部分，可以配置自动曝光，手动曝光。如果是外触发模式，建议使用手动曝光模式，然后手动配置曝光时间和增益。
                        https://wiki.veye.cc/index.php/Mv_mipi_i2c.sh_user_guide#metime

                        Questions will be answered as soon as possible, please be patient.
                        如果你使用中文，请直接用中文提问。
                        May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                        H 1 Reply Last reply Reply Quote 0
                        • H Offline
                          hmj @veye_xumm
                          last edited by hmj

                          @veye_xumm
                          关于ROI, 有几个问题请教一下
                          1:X,Y,W,H中的W应该多少字节对齐合适? 全画面下文档建议是64x, X的起始位置应为多少字节对其合适?参考代码中是8
                          2:ROI重配置是否需要对/dev/video0设备关闭重新打开?
                          3:ROI的设置有2部分重叠, I2C那边有设置参数, V4L2也有设置参数.是否要重配置
                          如果我需一起哦截取的位置是 [256,256, 512,512] 那么V4L2那边的具体参数该怎么配置,从0,0开始(应为I2C已经配过了), 还是(256,256)开始?

                          veye_xummV 1 Reply Last reply Reply Quote 0
                          • veye_xummV Offline
                            veye_xumm @hmj
                            last edited by

                            @hmj

                            1. [y] [height] 的步长为 4，[width] 的步长为 8。

                              实际上在jetson平台上，建议width的步长为64.这样方便jetson主板收到数据之后对齐操作，也方便你应用层处理。

                            @hmj said in jetson nano 2GB无法识别相机 MV-MIPI-IMX264M:

                            2:ROI重配置是否需要对/dev/video0设备关闭重新打开?

                            不需要。

                            @hmj said in jetson nano 2GB无法识别相机 MV-MIPI-IMX264M:

                            3:ROI的设置有2部分重叠, I2C那边有设置参数, V4L2也有设置参数.是否要重配置

                            不需要重复设置。
                            如果你打开/dev/video0之前对camera做一系列配置，可以用脚本对摄像头进行一系列配置。然后打开/dev/video0，v4l2接口会得到新配置的参数。
                            另一个方法，也更简单一些。对于v4l2接口支持的参数，就直接用v4l2接口配置。不支持的用脚本配置即可。

                            @hmj said in jetson nano 2GB无法识别相机 MV-MIPI-IMX264M:

                            如果我需一起哦截取的位置是 [256,256, 512,512] 那么V4L2那边的具体参数该怎么配置,从0,0开始(应为I2C已经配过了), 还是(256,256)开始?

                            不管用什么配置方法，都正确传递[256,256, 512,512] 参数进去应该就可以的。

                            Questions will be answered as soon as possible, please be patient.
                            如果你使用中文，请直接用中文提问。
                            May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                            H 1 Reply Last reply Reply Quote 0
                            • H Offline
                              hmj @veye_xumm
                              last edited by hmj

                              @veye_xumm

                              假设jetson上电后得预配置时[0,0,2432,2048],正在正常按节奏取图,
                              这时UI 给了一个[128, 16, 1024, 256] 这么一个需求,
                              如何配置驱动,才能让用户无感无缝切换图片.
                              (配置时候,可以接受暂时停流, 不接受重启上层应用或重启jetson设备)

                              veye_xummV 1 Reply Last reply Reply Quote 0
                              • veye_xummV Offline
                                veye_xumm @hmj
                                last edited by

                                @hmj 你在你的程序里面，调用stop stream（VIDIOC_STREAMOFF），然后配置roi，然后重新start stream（VIDIOC_STREAMON）。

                                Questions will be answered as soon as possible, please be patient.
                                如果你使用中文，请直接用中文提问。
                                May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                                H 1 Reply Last reply Reply Quote 0
                                • H Offline
                                  hmj @veye_xumm
                                  last edited by

                                  @veye_xumm
                                  也就是说,在nano平台, 关于roi这组参数,可以忽略i2c层面配置,只有v4l那边配置就可以了?
                                  这么做是真实硬件ROI, 会带来FPS得提升吧?

                                  veye_xummV 1 Reply Last reply Reply Quote 0
                                  • veye_xummV Offline
                                    veye_xumm @hmj
                                    last edited by

                                    @hmj
                                    I2c脚本和v4l2接口，本质上都是通过i2c配置了camera的寄存器。所以只需要v4l做了，就无需使用脚本配置。
                                    是的，降低roi中的图像高度，会提升MAXFPS，你可以通过脚本获取当前配置下的max fps，然后配置fps到范围内的值。

                                    Questions will be answered as soon as possible, please be patient.
                                    如果你使用中文，请直接用中文提问。
                                    May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                                    H 1 Reply Last reply Reply Quote 0
                                    • H Offline
                                      hmj @veye_xumm
                                      last edited by hmj

                                      @veye_xumm
                                      我现在又遇到一个问题,如果我把相机曝光设置为10000(2432*2048), 查询GET_FPS,帧率大约为38.84,那么帧周期为27902, 在此基础上用硬触发(周期为28000的脉冲,其中高电平维持10000,站空比为5:7)去拍, 比如发送10个脉冲, 那么只能收到5图,如果把触发周期改成34000以上, 那么10图都能接受到.

                                      我现在需要保证相机尽量快速取图,哪边还需要再配置才能获地高速?

                                      veye_xummV 1 Reply Last reply Reply Quote 0
                                      • veye_xummV Offline
                                        veye_xumm @hmj
                                        last edited by

                                        @hmj 按照https://wiki.veye.cc/index.php/Mv_mipi_camera_manual/zh part2.4.3的描述，你的诉求应该是没有问题的。
                                        你先参考这个链接，升级一下固件：https://wiki.veye.cc/index.php/Mvcam_firmware_update_manual
                                        然后再做一下测试试试。

                                        Questions will be answered as soon as possible, please be patient.
                                        如果你使用中文，请直接用中文提问。
                                        May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                                        H 1 Reply Last reply Reply Quote 0
                                        • H Offline
                                          hmj @veye_xumm
                                          last edited by

                                          @veye_xumm

                                          ./mv_mipi_i2c.sh -r -f version
                                          version is C 01.34 and L 02.00
                                          貌似已经是最新固件,与网站上6月5日是同一版, 无需再升级

                                          veye_xummV 1 Reply Last reply Reply Quote 0
                                          • veye_xummV Offline
                                            veye_xumm @hmj
                                            last edited by

                                            @hmj https://wiki.veye.cc/index.php/Mv_mipi_i2c.sh_user_guide
                                            参考这个页面，把trigger相关的参数读出来一下，发给我看看。
                                            trgnum
                                            trginterval
                                            trgdelay
                                            trgedge
                                            trgfilter_enable
                                            trgfilter_time
                                            trgexp_delay
                                            trgcount

                                            Questions will be answered as soon as possible, please be patient.
                                            如果你使用中文，请直接用中文提问。
                                            May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                                            H 1 Reply Last reply Reply Quote 0

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