[MTS-MTQ] QuectelRadio implementation

Fixed parsing of RSSI dBm in QuectelRadio::getNetworkStatus for GSM mode.

As stated in the datasheet[1], we should substract "111" from the value
in <rxlev> field in order to get a proper value in dBm.

The thing is that the values returned by a real device are already
out of the "0-63" range stated in a datasheet. And looks like those
values are already in a dBm scale. [2]

This commit removes additional substraction and saves the value of <rxlev> field
directly without any modifications.

Sources:
- [1] QuectelEC2x26EG9x26EM05QuecCellATCommandsManualV10.929966385.pdf, page 9, <rxlev> field description.
- [2] +QENG: "servingcell","NOCONN","GSM",REDACTED,REDACTED,REFACTED,REDACTED,8,522,0,-66,255,255,0,41,41,1,-,-,-,-,-,-,-,-,-,""

1 files changed, 1 insertions, 7 deletions

diff --git a/src/MTS_IO_QuectelRadio.cpp b/src/MTS_IO_QuectelRadio.cpp
index 20a2a21..af7fc7c 100644
--- a/src/MTS_IO_QuectelRadio.cpp
+++ b/src/MTS_IO_QuectelRadio.cpp
@@ -273,13 +273,7 @@ CellularRadio::CODE QuectelRadio::getNetworkStatus(Json::Value& jData) {
             jData[KEY_ABND] = sValue;
         }
 
-        if (MTS::Text::parse(iValue, vParts[10])) {
-            // Number format. RX level value for base station selection in dB (see 3GPP 25.304).
-            // Range: 0-63. Subtracting 111 from the RX level value, a dBm value will be got.
-            int rssi = iValue - 111;
-            jData[KEY_RSSIDBM] = MTS::Text::format(rssi);
-        }
-
+        jData[KEY_RSSIDBM] = vParts[10];  // Values already negative. No need to substract 111 as stated in a datasheet
         jData[KEY_TXPWR] = vParts[11];
         jQuectelDebug["rla"] = vParts[12];
         jQuectelDebug["drx"] = vParts[13];