Hello!
I have an application running on the Beaglebone Black. It runs from the
eMMC because we need to mount a blank SD card and occasionally store data
or video on the external SD card. Here are some details to jog ideas:
- using a Bealgebone black
- connected to a powered hub and running 2 led strips and 1 camera
- made a custom cape/shield that allows us to interface with
- an RGB button
- a 16x2 char lcd
- an optically isolated relay module
- the relay module runs a solenoid circuit (in which I'm currently
debugging the need for a flyback diode)
- the SD card is mounted using */etc/fstab* with the line */dev/mmcblk0p1
/media/sd auto auto,nofail,user,dmask=022,fmask=111 0 0*
- SD cards are inexpensive and found
here:
https://www.amazon.com/gp/product/B00WUCNGVQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
My application is writing files to the SD card only on certain occasions
during which the Beaglebone will not be hard-rebooted. However, it will be
hard-rebooted (and the application started by systemd on next boot) as a
means of shutting it down.
The problem is that I've recently began to discover issues with the blank
SD card on next boot after a hard reboot. For a short time I can *touch*
and write *vim* files on the card just fine. Once I start up the node.js
program, part way through it complains about the SD card being read-only.
>From then on I cannot *touch* or *vim* files anymore. So I reformat the
card and copy the configuration files back on. I've noticed that one of my
configuration files is chopped short.
Here are some things I've tried and intend to try:
- have tried
- removing the power to the hub which seemed to be back-powering the
BBB (still fails on reboot)
- stopping the program that writes files entirely (still fails on
reboot)
- intend to try
- writing the configuration files elsewhere (on the eMMC for example)
- better SD cards
In the meantime, any ideas?
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