As a part of setting up my 9$ CHIP computer, I was running my chip from 500 mA/1000 mA power sources and sometimes the CHIP stops during startup due to high current consumption.
To stop chip from stopping CHIP during boot I had taken following steps:
This script might be used for non-USB devices(might need some modifications). Though tried and tested on CHIP, it might run on PCs and other Linux boxes with little modifications. If you have suggestions/modifications, please let me know or update in git.
To stop chip from stopping CHIP during boot I had taken following steps:
- Ensure the power supply is good and at least 1000 mA
- Ensure that CHIP is connected to a LiPo battery, so that battery can supply burst current situations
- Added /etc/systemd/system/no-limit.service
- This is nothing but execution of axp209 --no-limit during CHIP-booting by systemd
- Stopping USB hubs and USB devices during startup programatically
- Write systemd scripts for using above script -- TODO
To achieve the 4th step, one has to programmatically detect USB devices on USB Hub and stop them. Later once startup is finished, start the USB devices programmatically.
So I write one helper script that does this job automatically and this code can be read at github
This script might be used for non-USB devices(might need some modifications). Though tried and tested on CHIP, it might run on PCs and other Linux boxes with little modifications. If you have suggestions/modifications, please let me know or update in git.
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