Hi, I have trying to build the firmware and flash the camera however I have not > been successful. I build the firmware on my machine and the used the web > interface to upload the new firmware to the camera, however this bricked > the camera. Do you have any advice about why this may have happened? >
- Did you build master (= jethro) or rocko branch? git clone -b rocko https://git.elphel.com/Elphel/elphel393.git? - I'm working with the kernel in rocko plus some application projects are on their master branches. Can break things from time to time but I recommend to build the rocko branch for the main project. - If you have a serial port up you should see at least some output from u-boot and kernel. - First try putting your built files on the recovery SD card and boot from it - In elphel393/tools/elphel-tools-update/ there's a write_bootable_mmc.py - if you used it to write the card then copy it to elphel393/bootable-images/mmc/ and run it. If it boots and works - then flash it from the web interface - If you boot from flash - you can only reflash u-boot, device tree and kernel, but not rootfs (cause it's mounted). To reflash rootfs - boot from the recovery card and use the web interface. > I then tried to add extra files onto the SD card, however the camera would > not boot from SD card after adding extra files. Is it not possible to add > files to filesystem on the SD card. > It is possible. Did you copy files to the ROOT partition or BOOT? Serial output would help. > I would like to be able to flash the camera with custom firmware with > additional services running on the camera. Will this be easy to do? > Brief info: https://wiki.elphel.com/wiki/Development_for_10393#Applications It needs a one time setup. Take/copy 'init' project as an example. After it's set up there's an extra bitbake task to copy files to the camera - I boot from SD card for development: > $ bitbake somerecipe -c compile -f; bitbake somerecipe -c target_scp -f This task requires pwdless access to the camera: ssh-copy-id root@192.168.0.9 If some application already exists in Yocto or OE - you just need to include it to the list in the elphel393/meta/meta-elphel393/recipes-core/images/core-image-elphel393.bb Best regards, Oleg Dzhimiev Electronics Engineer phone: +1 801 783 5555 x124 <(801)%20783-5555> Elphel, Inc.
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