MA-X3xx には、2色(赤/緑) LED が 4 個 (POWER, STATUS-1〜3) 実装されています。

それぞれのデフォルトでの割り当ては下記のようになっています。

全ての LED は LED class driver²⁾ での実装となっていますので、 sysfs³⁾ I/F により任意の動作に変更が可能です。

root@metis:~# ls -l /sys/class/leds/
total 0
lrwxrwxrwx 1 root root 0 Jun 13 13:36 ConsoleEnable -> ../../devices/platform/gpio-leds/leds/ConsoleEnable
lrwxrwxrwx 1 root root 0 Jun 13 13:36 DO_S0 -> ../../devices/platform/gpio-leds/leds/DO_S0
lrwxrwxrwx 1 root root 0 Jun 13 13:36 DO_T0 -> ../../devices/platform/gpio-leds/leds/DO_T0
lrwxrwxrwx 1 root root 0 Jun 13 13:36 LED_Drv_Enable -> ../../devices/platform/gpio-leds/leds/LED_Drv_Enable
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MSP430_RST -> ../../devices/platform/gpio-leds/leds/MSP430_RST
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MSP430_TEST -> ../../devices/platform/gpio-leds/leds/MSP430_TEST
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_G0 -> ../../devices/platform/gpio-leds/leds/MobileLED_G0
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_G1 -> ../../devices/platform/gpio-leds/leds/MobileLED_G1
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_G2 -> ../../devices/platform/gpio-leds/leds/MobileLED_G2
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_R0 -> ../../devices/platform/gpio-leds/leds/MobileLED_R0
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_R1 -> ../../devices/platform/gpio-leds/leds/MobileLED_R1
lrwxrwxrwx 1 root root 0 Jun 13 13:36 MobileLED_R2 -> ../../devices/platform/gpio-leds/leds/MobileLED_R2
lrwxrwxrwx 1 root root 0 Jun 13 13:36 Mobile_Power -> ../../devices/platform/gpio-leds/leds/Mobile_Power
lrwxrwxrwx 1 root root 0 Jun 13 13:36 Mobile_RESETN -> ../../devices/platform/gpio-leds/leds/Mobile_RESETN
lrwxrwxrwx 1 root root 0 Jun 13 13:36 PHY0_Reset -> ../../devices/platform/gpio-leds/leds/PHY0_Reset
lrwxrwxrwx 1 root root 0 Jun 13 13:36 PHY1_Reset -> ../../devices/platform/gpio-leds/leds/PHY1_Reset
lrwxrwxrwx 1 root root 0 Jun 13 13:36 PowerLED:G -> ../../devices/platform/gpio-leds/leds/PowerLED:G
lrwxrwxrwx 1 root root 0 Jun 13 13:36 SHUTDOWN_REQ -> ../../devices/platform/gpio-leds/leds/SHUTDOWN_REQ
lrwxrwxrwx 1 root root 0 Jun 13 13:36 USBHub_Reset -> ../../devices/platform/gpio-leds/leds/USBHub_Reset
lrwxrwxrwx 1 root root 0 Jun 13 13:36 mmc0:: -> ../../devices/platform/bus@f4000/fa10000.mmc/leds/mmc0::
lrwxrwxrwx 1 root root 0 Jun 13 13:36 mmc1:: -> ../../devices/platform/bus@f4000/fa00000.mmc/leds/mmc1::
lrwxrwxrwx 1 root root 0 Jun 13 13:36 power-stat:r -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/power-stat:r
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status1:g -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status1:g
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status1:r -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status1:r
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status2:g -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status2:g
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status2:r -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status2:r
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status3:g -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status3:g
lrwxrwxrwx 1 root root 0 Jun 13 13:36 system-status3:r -> ../../devices/platform/bus@f4000/20010000.i2c/i2c-1/1-0045/leds/system-status3:r
root@metis:~# 

LTE モジュールが搭載された機種には、

• アンテナレベル (0 〜 3)
• 回線接続状態

を表す LED が実装されています。

LTE モジュールのアンテナレベル及び回線への接続状態により、点灯パターンが変化します。
※ アンテナレベルモニタ(mobile_watch_ng) により制御されています。