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--- products:sbc:vim1s:hardware:vim1s-boot-flow [2023/03/06 22:32]
hyphop
+++ products:sbc:vim1s:hardware:vim1s-boot-flow [2023/06/05 21:45] (current)
hyphop [OOWOW boot led indication]
@@ Line 17: / Line 17: @@
 WIP:
-  * ''FUNCTION'' + ''RESET'' - oowow mode
+  * ''FUNCTION'' + ''RESET'' - [[#oowow-mode]]
   * ''FUNCTION'' x3 times - flash mode
 More detail: [[./interfaces#hardware-buttons]]
+====== OOWOW boot led indication ======
+OOWOW boot makes a red LED indication on the first boot seconds, it's looks like a short RED blinking 1-3 sec in success,
+<WRAP important >
+Red blink or permanent red LED means OOWOW failed
+</WRAP>
+<WRAP tip >
+This indication common for VIM4, Edge2 and VIM1S
+</WRAP>
+```shell Preparing for oowow
+# red led hb mode
+i2c mw 0x18 0x89 3
+```
+```shell try to start
+# red led off
+i2c mw 0x18 0x89 0
+```
+```shell oowow fail
+# red led on mode
+i2c mw 0x18 0x89 1
+```
+=== dev-info ===
+WIP: special pre-boot led indication
+====== OOWOW mode  ======
+Exclusive special service mode: activated [[#hardware-buttons|by hardware buttons]] or [[#set-oowow-mode|by software request]]
+<WRAP important >
+Ignore all boot sources like: ''USB'' removable stores , ''eMMC'' internal storage ...
+</WRAP>
+Boot fail service mode activated automatically as rescue mode for:
+  * internal eMMC storage is empty
+  * cant find any boot-able OS sources
+  * boot-up from other sources fail
+<WRAP important >
+Try at 1st boot from sources all sources: ''USB'' removable stores , ''eMMC'' internal storage ...
+</WRAP>
 ====== Boot modes oowow shell usage ======

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