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

    Jetson App Software
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    • H
      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_xumm 1 Reply Last reply Reply Quote 0
      • veye_xumm
        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。

        H 1 Reply Last reply Reply Quote 0
        • H
          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_xumm 1 Reply Last reply Reply Quote 0
          • veye_xumm
            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

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

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

              trgcount

              pt@dpt-desktop:./mv_mipi_i2c.sh -r -f version
              version is C 01.34 and L 02.00
              dpt@dpt-desktop: ./mv_mipi_i2c.sh -r -f trgnum
              r trigger num is 1
              dpt@dpt-desktop: ./mv_mipi_i2c.sh -r -f trginterval
              r trginterval is 0
              dpt@dpt-desktop:./mv_mipi_i2c.sh -r -f trgdelay
              r trgdelay is 0
              dpt@dpt-desktop:./mv_mipi_i2c.sh -r -f trgedge
              r trg edge is 0
              dpt@dpt-desktop: ./mv_mipi_i2c.sh -r -f trgfilter_enable
              r trgfilter enable is 0
              dpt@dpt-desktop: ./mv_mipi_i2c.sh -r -f trgfilter_time
              r trgfilter time is 1 us
              dpt@dpt-desktop:./mv_mipi_i2c.sh -r -f trgexp_delay
              r trigger exposure delay is 0 us
              dpt@dpt-desktop:./mv_mipi_i2c.sh -r -f trgcount
              r trigger count 156, trigger lost 0

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

                @hmj 你现在读取一下fps和maxfps,分别是多少?

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

                  @veye_xumm
                  ./mv_mipi_i2c.sh -r -f maxfps
                  r maxfps @ current setting is 35.84 fps
                  ./mv_mipi_i2c.sh -r -f fps
                  r fps is 30.00 fps

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

                    @hmj
                    这是问题所在了。
                    虽然是触发模式,但是实际生效的帧率还是fps这个参数,maxfps永远只是最大能力的一个提示而已。
                    那么你之前

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

                    查询GET_FPS,帧率大约为38.84,那么帧周期为27902,

                    这个地方的帧周期计算,应该使用fps来算。 这个fps不仅影响着camera真正的运作时序,也影响着最大可设的曝光时间。
                    建议你:

                    ./mv_mipi_i2c.sh -w -f fps -p1 40 -b [bus]
                    ./mv_mipi_i2c.sh -r -f fps -b [bus]
                    

                    这样,就把相机设置到了当前roi下最大帧率。
                    应该就没问题了。

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

                      @veye_xumm
                      感谢,问题解决~

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

                        @hmj 不客气

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

                          @veye_xumm
                          我们现在基本测试已经通过,现在有个棘手的问题,由于jetson nano的mipi驱动在kernel image中,我目前的做法是直接替换官方的.

                          我们目前项目中添加了许多其他功能, 因此修改了内核的许多地方.所以为了替换之前的老相机,必须拿到你们kenrel源码和DTS, 再整合进我们目前的内核中,才能无缝完成项目的迁移.

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

                            @hmj 请参考下面这个链接
                            https://wiki.veye.cc/index.php/VEYE_CS_Camera_source_for_Jetson/zh

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