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by yannickb
Wed Jul 24, 2019 12:07 am
Forum: Compute Module
Topic: Strange CM3 booting issue
Replies: 5
Views: 1533

Re: Strange CM3 booting issue

Indeed it was a FAT16 issue. Buildroot makes a 16-bit VFAT partition by default, had to use extraargs="-F 32" to force 32-bit VFAT creation AND bump the partition size from 32M to 64M because of FAT32 minimum partition size requirements. What I wonder is why 4 out of 50 CM3s "don't like" FAT16. Is i...
by yannickb
Mon Jul 22, 2019 11:28 pm
Forum: Compute Module
Topic: Strange CM3 booting issue
Replies: 5
Views: 1533

Strange CM3 booting issue

Hello, We have a buildroot image that we plan rolling on all our embedded systems quite soon. Except... we have an issue with *SOME* CM3s (about 4 every 50 units processed). Basically, when these "faulty" CM3s are booted, the activity LED stays always ON. From what I understand this means there is a...
by yannickb
Wed May 08, 2019 11:02 pm
Forum: Compute Module
Topic: Flashing RaspberryPi CM3 in a production context
Replies: 5
Views: 824

Re: Flashing RaspberryPi CM3 in a production context

I think it's likely that Linux is opening the partitions while you are checksumming. It will then write to the partitions... How about you read the partitions back using dd afterwards and see where the differences are? Gordon Hi Gordon, it indeed was that. Damn! I was starting to think it was a pro...
by yannickb
Tue May 07, 2019 7:37 pm
Forum: Compute Module
Topic: Flashing RaspberryPi CM3 in a production context
Replies: 5
Views: 824

Flashing RaspberryPi CM3 in a production context

Hi, We've been doing a RPi CM3 Computer Board projet since awhile and we are done with the hardware part, but the software part makes me frankly depressed as of late. I'm trying to make a small software to flash RPi CM3, so that our production team can flash about a hundred of them each day. What I ...

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