Hardware Reset issue on v23.05.3
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Hi all, I'm experiencing an issue with Hardware Reset on my Onion Omega2 Pro after updating to OpenWrt v23.05.3 based image.
With v0.3.4 (and earlier) images, I sent a reset pulse on CPU_RST line (pin 27 from J2 header) and the device was reset. However, after installing the latest image (onion_omega2p-23.05.3-20250709.bin), the behavior has changed. After sending the same reset pulse (500 ms width), the device gets bricked and becomes unresponsive. The only way to recover it is through a power-cycle.
I wonder if anybody else has observed the same issue and if there is any workaround for it.
Thanks!
Matias
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@matiaslao Is you use the factory reset process do you experience the same issue?
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Hi @crispyoz! Thanks for taking care.
I understand that factory reset via the reset button interacts with 'SW_RST' line (aka GPIO38 - pin 4) from Onion Omega. The issue I described is observed when generating a reset pulse on 'HW_RST_N' line (pin 5).
The SW reset works fine, both as a 'normal' reboot or a factory reset. I repeted the test after performing a factory reset and the unit got bricked too when the reset pulse was generated on HW_RST_N line.
Best regards,
Matias
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@matiaslao Before I try this myself can you clarify "bricked" please, can you still boot into u-boot and reflash the firmware or is the device unusable? Perhaps post the boot up log screen.
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@crispyoz my bad, I should have been more specific.
After issuing the reset pulse, the device becomes 'unresponsive', meaning that it can't be accessed via SSH, it does not respond to ping commands, and if I'm connected over serial, I don't even see the echo to the input characters.
If I power-cycle the device, meaning I power it off and on, it boots normally. It is NOT necessary to run through any recovery process (e.g. u-boot, web recovery, etc).
Thank you for your assistance.
