TS-7250-V3 Supervisory Reset Reasons: Difference between revisions
From embeddedTS Manuals
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| Wake from USB VBUS | | Wake from USB VBUS | ||
| System initiated a shutdown, USB console plugged in. | | System initiated a shutdown, USB console plugged in. | ||
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| Wake from RTC Alarm | |||
| System initiated a shutdown, and the RTC alarm tripped. | |||
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Revision as of 12:03, 24 February 2023
The supervisory microcontroller can detect multiple reasons why the system rebooted or woke back up. These are provided by the sysfs device:
root@tsimx6ul:~# cat /sys/bus/platform/devices/tssupervisor-reset/reboot_reason POR
| reboot_reason text | Description |
|---|---|
| POR | Initial boot from power/console being powered. |
| Brownout | 5V dropped below 4.7V, but microcontroller stayed power (from 5v/vin or USB). |
| CPU WDT | CPU Watchdog initiated a reboot. |
| Software Reboot | The linux kernel initiated a reboot. |
| RTC Alarm Reboot | RTC Alarm initiated reboot. |
| Wake from PWR Cycle | System initiated a shutdown with console connected, and power was cycled. |
| Wake from WAKE_EN | System initiated a shutdown, powered back on when "WAKE_EN#" was brought to 3-30V. |
| Wake from USB VBUS | System initiated a shutdown, USB console plugged in. |
| Wake from RTC Alarm | System initiated a shutdown, and the RTC alarm tripped. |