Information/HGAVR
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Revision as of 00:47, 26 June 2006
The AVR controls much of the LinkStation hardware, including the power button and LED indicator. It is controlled by the commands sent to /dev/ttyS1. To send commands to the AVR:
echo -n "commands" > /dev/ttyS1
| Command | Action/Code |
| \30\30\30\30 | Stops smbd and atalkd if /dev/hda3 is not mounted to /mnt. Sent by /www/script/melsub_diskcheck.sh. |
| [[[[ | Starts slowly blinking power LED (sleep). |
| ]]]] | High-speed cooling fan rotation. |
| \\\\ | Low-speed cooling fan rotation. |
| >>>> | Unknown. Sent by ppc_uartd on boot. |
| AAAA | Unknown. Sent by ppc_uartd on boot. |
| CCCC | Sent by shutdown -r now (reboot). |
| EEEE | Sent by shutdown -h now (halt). |
| FFFF | Unknown. Sent by ppc_uartd on boot. |
| JJJJ | Unknown. Sent by ppc_uartd on boot. |
| KKKK | Unknown. Sent by ppc_uartd on boot. |
| QQQQ | Unknown. Sent by ppc_uartd on set timer. |
| RRRR | End of clear flash memory. |
| SSSS | Start of clear flash memory and /www/script/melsub_init.sh. Sent by /www/script/melsub_flash.sh. |
| TTTT | Flash memory update completed (stops blinking power, disk full, and diagnostic LEDs). |
| UUUU | Flash memory update started (starts blinking power, disk full, and diagnostic LEDs). |
| VVVV | Turns off disk full LED. |
| WWWW | Turns on disk full LED. |
| XXXX | Stops blinking disk full LED. |
| YYYY | Starts blinking disk full LED. |
| ZZZZ | Stops slowly blinking power LED. Sent by ppc_uartd. |
| gggg | Diagnostic LED blinks 3 times and system shutdown (partition error). |
| iiii | Diagnostic LED blinks 4 times and system shutdown (cooling fan error). |
| kkkk | Diagnostic LED blinks 5 times and system powers off (flash memory error). |
| mmmm | Diagnostic LED blinks 6 times and system shutdown (hard drive or ppc_uartd error). |
| oooo | Diagnostic LED blinks 7 times and system shutdown (RAM, NIC, or HDD controller error). |
Most of this information courtesy of http://www.yamasita.jp/linkstation.en/index.html.
