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doc:appunti:hardware:tl-mr6400_openwrt [2024/04/26 15:30] – [Upgrade to OpenWRT 22.05.0] niccolodoc:appunti:hardware:tl-mr6400_openwrt [2025/07/02 16:54] (current) – [LTE signal strenght LEDs] niccolo
Line 141: Line 141:
 } }
 </code> </code>
 +
 +^ RSSI  ^ Usability      ^
 +| -60   | Good           |
 +| -70   | Acceptable     |
 +| -90   | Barely usable  |
 +
 +The **uqmi** can be used to get several info about the current connection, e.g. the **MCC** (Mobile Country Code), **MNC** (Mobile Network Code), **TAC** (Tracking Area Code, knwon also as **LAC**, Local Area Code):
 +
 +<code>
 +uqmi --device=/dev/cdc-wdm0 --get-system-info
 +{
 +        "wcdma": {
 +                "service_status": "none",
 +                "true_service_status": "none",
 +                "preferred_data_path": false
 +        },
 +        "lte": {
 +                "service_status": "available",
 +                "true_service_status": "available",
 +                "preferred_data_path": false,
 +                "domain": "cs-ps",
 +                "service": "cs-ps",
 +                "roaming_status": "off",
 +                "forbidden": false,
 +                "mcc": "222",
 +                "mnc": "50",
 +                "tracking_area_code": 36035,
 +                "enodeb_id": 344505,
 +                "cell_id": 7,
 +                "voice_support": false,
 +                "ims_voice_support": false,
 +                "cell_access_status": "all calls",
 +                "registration_restriction": 0,
 +                "registration_domain": 0
 +        }
 +}
 +</code>
 +
 +:!: **NOTICE**: Some services - like [[https://www.opencellid.org/|www.opencellid.org]] - identify the cells using the **Cell ID**, which is actually the **ECI** (E-UTRAN Cell Identifier). That identifier is composed by the //enodeb_id// (20 bits) and the //cell_id// (8 bits), using the following formula:
 +
 +**ECI = enodeb_id * 256 + cell_id**
 +
 +So, in the example above, we have that the Cell ID is:
 +
 +**%%ECI = 344505 * 256 + 7 = 88193287%%**
 +
  
  
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 #!/bin/sh #!/bin/sh
  
-RSSI="$1"    +RSSI="$1"
 if ! echo "$RSSI" | egrep -q '^[+-]?\d+$'; then if ! echo "$RSSI" | egrep -q '^[+-]?\d+$'; then
-        echo "Usage: uqmi_led.sh [RSSI]"          +        echo "Usage: uqmi_led.sh [RSSI]" 
-        exit                             +        exit 
-fi          +fi
 echo "$RSSI" > '/tmp/lte-rssi' echo "$RSSI" > '/tmp/lte-rssi'
-                              +
 LED1=$(readlink -f /sys/class/leds/white:signal1) LED1=$(readlink -f /sys/class/leds/white:signal1)
 LED2=$(readlink -f /sys/class/leds/white:signal2) LED2=$(readlink -f /sys/class/leds/white:signal2)
 LED3=$(readlink -f /sys/class/leds/white:signal3) LED3=$(readlink -f /sys/class/leds/white:signal3)
-                                                  + 
-if [ "$RSSI" -eq -200 ]; then                    +if [ "$RSSI" -eq -200 ]; then
         echo none > $LED1/trigger         echo none > $LED1/trigger
         echo none > $LED2/trigger         echo none > $LED2/trigger
         echo none > $LED3/trigger         echo none > $LED3/trigger
-elif [ "$RSSI" -le -90 ]; then   +elif [ "$RSSI" -le -90 ]; then
         echo default-on > $LED1/trigger         echo default-on > $LED1/trigger
-        echo none > $LED2/trigger       +        echo none > $LED2/trigger 
-        echo none > $LED3/trigger       +        echo none > $LED3/trigger 
-elif [ "$RSSI" -le -60 ]; then   +elif [ "$RSSI" -le -60 ]; then
         echo default-on > $LED1/trigger         echo default-on > $LED1/trigger
         echo default-on > $LED2/trigger         echo default-on > $LED2/trigger
-        echo none > $LED3/trigger       +        echo none > $LED3/trigger 
-else                                   +else
         echo default-on > $LED1/trigger         echo default-on > $LED1/trigger
         echo default-on > $LED2/trigger         echo default-on > $LED2/trigger
         echo default-on > $LED3/trigger         echo default-on > $LED3/trigger
-fi                                     +fi
 </code> </code>
  
Line 366: Line 412:
   * **[[https://openwrt.org/docs/guide-user/base-system/led_configuration|OpenWRT - LED Configuration]]**   * **[[https://openwrt.org/docs/guide-user/base-system/led_configuration|OpenWRT - LED Configuration]]**
   * **[[https://forum.openwrt.org/t/tl-mr6400-v5-lte-disconnect-after-six-hours/125468|[TL-MR6400 v5] LTE “disconnect” after six hours]]**   * **[[https://forum.openwrt.org/t/tl-mr6400-v5-lte-disconnect-after-six-hours/125468|[TL-MR6400 v5] LTE “disconnect” after six hours]]**
 +  * **[[https://www.techtrained.com/the-ultimate-cheat-sheet-for-lte-identifiers/|The Ultimate Cheat Sheet for LTE Identifiers]]**
 +  * **[[https://mobilepacketcore.com/what-is-tracking-area-in-lte/|What is tracking area in LTE]]**
  
doc/appunti/hardware/tl-mr6400_openwrt.1714138250.txt.gz · Last modified: by niccolo