TS-7250-V3 Supervisory Reset Reasons: Difference between revisions
From embeddedTS Manuals
(Created page with "The supervisory microcontroller can detect multiple reasons why the system rebooted or woke back up. These are provided by the sysfs device: <console> root@tsimx6ul:~# cat /sys/bus/platform/devices/tssupervisor-rstc/reboot_reason POR </console> {| class=wikitable |- ! reboot_reason text ! Description |- | POR | Initial boot from power/console being powered. |- | CPU WDT | CPU Watchdog initiated a reboot. |- | Software Reboot | The linux kernel initiated a reboot. |- |...") |
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<console> | <console> | ||
root@tsimx6ul:~# cat /sys/bus/platform/devices/tssupervisor- | root@tsimx6ul:~# cat /sys/bus/platform/devices/tssupervisor-reset/reboot_reason | ||
POR | POR | ||
</console> | </console> | ||
| Line 13: | Line 13: | ||
| POR | | POR | ||
| Initial boot from power/console being powered. | | 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 WDT | ||
| Line 27: | Line 30: | ||
|- | |- | ||
| Wake from WAKE_EN | | Wake from WAKE_EN | ||
| System initiated a shutdown, powered back on when | | System initiated a shutdown, powered back on when CN8 pin 9 was brought up to 3-30 V. | ||
|- | |- | ||
| Wake from USB VBUS | | Wake from USB VBUS | ||
| System initiated a shutdown, USB console plugged in | | System initiated a shutdown, USB console plugged in. | ||
|- | |||
| Wake from RTC Alarm | |||
| System initiated a shutdown, and the RTC alarm tripped. | |||
|} | |} | ||
Latest revision as of 11:55, 14 March 2024
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 CN8 pin 9 was brought up to 3-30 V. |
| 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. |