[AE-49] Chopped up video output from the Nicla Vision

[aliphys]

The data sent from CameraCaptureRawBytes.ino sketch uploaded to a Nicla Vision board is displayed as chopped up output in Processing 4.2 by the CameraRawBytesVisualizer.pde sketch.

Testing with the OpenMV IDE results in a smooth 20 FPS video feed, suggesting that the Nicla Vision board in question is healthy.

Compile

PS C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2023311-38456-1j6f6yl.zru7\CameraCaptureRawBytes> arduino-cli compile -b arduino:mbed_nicla:nicla_vision
Sketch uses 134312 bytes (6%) of program storage space. Maximum is 1966080 bytes.
Global variables use 54464 bytes (10%) of dynamic memory, leaving 469160 bytes for local variables. Maximum is 523624 bytes.

Used library Version Path
Camera       1.0     C:\Users\user\AppData\Local\Arduino15\packages\arduino\hardware\mbed_nicla\4.0.2\libraries\Camera
GC2145               C:\Users\user\AppData\Local\Arduino15\packages\arduino\hardware\mbed_nicla\4.0.2\libraries\GC2145
Used platform      Version Path
arduino:mbed_nicla 4.0.2   C:\Users\user\AppData\Local\Arduino15\packages\arduino\hardware\mbed_nicla\4.0.2

Upload

PS C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2023311-38456-1j6f6yl.zru7\CameraCaptureRawBytes> arduino-cli upload -p COM35 --fqbn arduino:mbed_nicla:nicla_vision
TOUCH: error during reset: opening port at 1200bps: Invalid serial port
dfu-util 0.10-dev

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Warning: Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release
Opening DFU capable USB device...
Device ID 2341:035f
Device DFU version 011a
Claiming USB DFU Interface...
Setting Alternate Interface #0 ...
Determining device status...
DFU state(2) = dfuIDLE, status(0) = No error condition is present
DFU mode device DFU version 011a
Device returned transfer size 4096
DfuSe interface name: "Internal Flash   "
Downloading element to address = 0x08040000, size = 136668
Erase           [=========================] 100%       136668 bytes
Erase    done.
Download        [=========================] 100%       136668 bytes
Download done.
File downloaded successfully
Transitioning to dfuMANIFEST state

[aliphys]

Some research 🔍 :

• The image I see, is similar to the buffer sync issue for which a fix was submitted in Fix buffer sync issue in camera raw bytes example #143 for Mac by @sebromero. Portenta camera fixes #122 also includes relavent attempts to fix this issue
• Possible reason for this problem is "handling the stream as an ASCII stream rather than binary and likely that is causing things like CR to be translated to CRLF" Portenta Vision Shield Camera demo not running #112 (comment)
• Multiple users have mentioned problems on Windows:
  • Portenta Vision Shield Camera demo not running #112 (comment)
  • [Nicla Vision] Camera example not working properly #559 (comment)
  • Fix buffer sync issue in camera raw bytes example #143 (comment)