{"type":"doc","content":[{"type":"extension","attrs":{"layout":"default","extensionType":"com.atlassian.confluence.macro.core","extensionKey":"toc","parameters":{"macroParams":{"style":{"value":"none"}},"macroMetadata":{"macroId":{"value":"e144518d-c090-4ba5-a212-6f098eea61b4"},"schemaVersion":{"value":"1"},"title":"Table of Contents"}},"localId":"efd7d786-277e-4a0c-853d-d63f9ce53687"}},{"type":"paragraph","content":[{"text":"The STM32MP1-BSB board provides the DCMI connector for cameras. This Application Notes describe how to attach such a camera to the board and obtain a video from the camera using the STM32MP1 BSP software.","type":"text"}]},{"type":"paragraph","content":[{"text":"The Waveshare OV5640 Camera Board (A) or (C) is used to demonstrate the camera support. For the camera software and manuals refer to:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"type":"inlineCard","attrs":{"url":"https://www.waveshare.com/wiki/OV5640_Camera_Board_(A)"}},{"text":" ","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"type":"inlineCard","attrs":{"url":"https://www.waveshare.com/wiki/OV5640_Camera_Board_(C)"}},{"text":" ","type":"text"}]}]}]},{"type":"paragraph","content":[{"text":"The Waveshare OV5640 Camera Board (A) or (C) must be attached to connector ","type":"text"},{"text":"P13","type":"text","marks":[{"type":"code"}]},{"text":" of the STM32MP1-BSB as follows:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Use a 18 Position Ribbon Cable Assembly Socket to Socket with 2.54mm pitch 2row connectors:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Samtec HCSD-09-D-08.00-01-T or similar is acceptable","type":"text"}]}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Make the cable as short as possible, no more than 1 cm length:","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":124,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":108,"alt":"adapter.jpg","id":"c9dfe1f6-b325-4d18-bee2-257dee84dbc4","collection":"contentId-270860828","type":"file","height":99}}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":273,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":512,"alt":"image-20240417-093042.png","id":"11fdefe0-4d64-44c4-9e7d-324ac68d8096","collection":"contentId-270860828","type":"file","height":402}}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":700,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":1280,"alt":"photo_5255810781184907173_y.jpg","id":"bd7d0eab-3384-40af-8c70-b79c8068efce","collection":"contentId-270860828","type":"file","height":576}}]},{"type":"paragraph","content":[{"text":" Test the camera interface as below:","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Boot the system to the shell prompt.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Verify that the camera is detected on the I2C bus at address 0x3c:","type":"text"}]},{"type":"codeBlock","content":[{"text":"root@stm32mp15-bsb:~# i2cdetect -y 2\n 0 1 2 3 4 5 6 7 8 9 a b c d e f\n00: -- -- -- -- -- -- -- -- -- -- -- -- -- \n10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \n20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \n30: -- -- -- -- -- -- -- -- -- -- -- -- UU -- -- -- \n40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \n50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \n60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \n70: -- -- -- -- -- -- -- -- ","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Verify that the Linux video stack is configured properly:","type":"text"}]},{"type":"codeBlock","content":[{"text":"root@stm32mp15-bsb:~# v4l2-ctl --list-devices\nSTM32 Camera Memory Interface (platform:dcmi):\n /dev/video0","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Verify that the camera is able to stream (interrupt with ^C):","type":"text"}]},{"type":"codeBlock","content":[{"text":"root@stm32mp15-som:~# v4l2-ctl --set-fmt-video=width=320,height=240,pixelformat=RGBP\nroot@stm32mp15-som:~# v4l2-ctl -d /dev/video0 --stream-mmap\n<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.02 fps\n<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.02 fps\n<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 30.02 fps\n<<<<<<<<<<<<\n","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Attach an HDMI display to the system as described in ","type":"text"},{"type":"inlineCard","attrs":{"url":"https://voxelbotics.atlassian.net/wiki/spaces/DOC/pages/270860764"}},{"text":". Stream the video to the display (interrupt with ^C) using the following command:","type":"text"}]},{"type":"codeBlock","content":[{"text":"root@stm32mp15-som:~# gst-launch-1.0 v4l2src ! \"video/x-raw, width=320, height=240, framerate=(fraction)15/1\" ! queue ! autovideosink\nSetting pipeline to PAUSED ...\nPipeline is live and does not need PREROLL ...\nPipeline is PREROLLED ...\nSetting pipeline to PLAYING ...\nNew clock: GstSystemClock\nRedistribute latency...\n0:00:06.6 / 99:99:99.\n....","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":700,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":1280,"alt":"photo_5255810781184907172_y.jpg","id":"960852e8-387c-40a7-ae34-e2cb3b63c41d","collection":"contentId-270860828","type":"file","height":576}}]},{"type":"paragraph"}],"version":1}

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